As filed with the Securities and Exchange Commission on April 1, 2005.
                           Registration No. 333-120317

================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                             ----------------------

                                 AMENDMENT NO. 3
                                       TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                             ADVANCED PHOTONIX, INC.
             (Exact name of registrant as specified in its charter)

                   DELAWARE                             33-0325826
                (State or other                      (I.R.S. employer
                jurisdiction of                   identification number)
                 incorporation)

                             ADVANCED PHOTONIX, INC.
                               1240 AVENIDA ACASO
                           CAMARILLO, CALIFORNIA 93012
                                 (805) 987-0146
   (Address, including zip code, and telephone number, including area code, of
                   Registrant's principal executive offices)

                    RICHARD D. KURTZ, CHIEF EXECUTIVE OFFICER
                             ADVANCED PHOTONIX, INC.
                               1240 AVENIDA ACASO
                           CAMARILLO, CALIFORNIA 93012
                                 (805) 987-0146
 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)

                                   Copies to:

                              LANDEY STRONGIN, ESQ.
                  DORNBUSH SCHAEFFER STRONGIN & WEINSTEIN, LLP
                                747 THIRD AVENUE
                            NEW YORK, NEW YORK 10017
                                 (212) 759-3300

      Approximate date of commencement of proposed sale to the public: From time
to time after this Registration Statement becomes effective.



      If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

      If any of the securities being registered on this form are to be offered
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act
of 1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]

      If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ] ____________.

      If this form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [X] ____________.

      If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

                         CALCULATION OF REGISTRATION FEE



                                                       PROPOSED
                                                       MAXIMUM          PROPOSED
   TITLE OF EACH CLASS                                 OFFERING          MAXIMUM          AMOUNT OF
   OF SECURITIES TO BE             AMOUNT TO          PRICE PER         AGGREGATE        REGISTRATION
       REGISTERED                BE REGISTERED          SHARE        OFFERING PRICE        FEE (4)
                                                                             
Class A Common Stock, par
value $.001 per share (1)      2,578,251 shares(1)    $  1.685(1)    $    4,344,353      $     550.43

Class A Common Stock, par
value $.001 per share,
issuable upon exercise of
warrants (1)                    850,822 shares(1)     $ 2.1156(3)    $    1,799,999(3)   $     228.06       

Class A Common Stock, par
value $.001 per share (1) (2)   1,028,722(2)          $  1.685(2)    $    1,733,397(2)   $     219.62


---------------------
(1) Estimated solely for the purpose of calculating the registration fee
pursuant to Rule 457(c) of the Securities Act of 1933, as amended, based on the
average of the high and low sale prices of our Class A common stock on November
5, 2004 as reported on the American Stock Exchange. The number of shares of
Class A common stock registered hereunder is based upon the maximum number of
shares of Class A common stock of the Registrant issuable upon conversion of the
notes and the exercise of the warrants.

(2) Pursuant to Rule 416 of the Securities Act of 1933, as amended, such shares
shall include (i) an indeterminate number of shares of Class A common stock that
may become issuable as a result of stock splits, stock dividends,
recapitalizations and similar events and (ii) an additional number of shares of
Class A common stock representing



the Registrant's good faith estimate of the maximum number of additional shares
that may become issuable pursuant to a contractual agreement with the selling
stockholders.

(3) Calculated pursuant to Rule 457(g) of the Securities Act of 1933, as
amended, based on the warrant exercise price of $2.1156 per share.

(4) The registration fee was previously paid with the initial filing of this
registration statement on November 9, 2004.

THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.



P R O S P E C T U S

                             ADVANCED PHOTONIX, INC.

                    4,457,795 SHARES OF CLASS A COMMON STOCK

     This prospectus relates to up to 4,457,795 shares of our Class A common
stock for resale by the selling stockholders identified in this prospectus or
their transferees from time to time. Of the Class A common stock offered hereby,
(i) 2,578,251 shares of Class A common stock are issuable upon conversion of
$5.0 million aggregate principal amount of our convertible notes, and (ii)
850,822 shares of Class A common stock are issuable upon exercise of warrants
issued in connection with the sale of the initial $5.0 million aggregate
principal amount of our convertible notes. We are not offering or selling any of
our Class A common stock pursuant to this prospectus. We will not receive any of
the proceeds from the sale of the shares by the selling stockholders. We will
not be paying any underwriting discounts or commissions in this offering.

The selling stockholders identified in this prospectus, or their pledgees,
donees, permitted transferees or other successors-in-interest, may offer the
shares from time to time through public or private transactions at prevailing
market prices, at prices related to prevailing market prices or at privately
negotiated prices.

      We do not know when or in what amount a selling stockholder may offer
shares for sale, including whether a selling stockholder will sell any or all of
the shares offered by this prospectus.

      Our Class A common stock is traded on the American Stock Exchange under
the symbol "API." On March 30, 2005, the last sale price of a share of our Class
A common stock as reported on the American Stock Exchange was $2.30.

      These securities involve a high degree of risk. See "Risk Factors"
beginning on page 4.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

                 The date of this prospectus is _______ __, 2005



                                TABLE OF CONTENTS



                                                                    PAGE
                                                                    ----
                                                                 
Cautionary Statement Regarding Forward Looking Statements.......     ii
The Company.....................................................      1
Risk Factors....................................................      4
Use of Proceeds.................................................     10
Selling Stockholders............................................     10
Plan of Distribution............................................     12
Legal Matters...................................................     15
Experts.........................................................     15
Where You Can Find More Information.............................     16
Indemnification.................................................     17


                              ABOUT THIS PROSPECTUS

      This prospectus is part of a registration statement that we filed with the
Securities and Exchange Commission, or the SEC, utilizing a "shelf" registration
process or continuous offering process. Under this shelf registration process,
the selling stockholders may, from time to time, sell the securities described
in this prospectus in one or more offerings. This prospectus provides you with a
general description of the securities that may be offered by the selling
stockholders. Each time a selling stockholder sells securities, the selling
stockholder is required to provide you with this prospectus and, in certain
cases, a prospectus supplement containing specific information about the selling
stockholder and the terms of the securities being offered. That prospectus
supplement may include additional risk factors or other special considerations
applicable to those securities. Any prospectus supplement may also add, update,
or change information in this prospectus. If there is any inconsistency between
the information in this prospectus and any prospectus supplement, you should
rely on the information in that prospectus supplement. You should read both this
prospectus and any prospectus supplement together with additional information
described under "Where You Can Find More Information.@

      As used in this prospectus, the terms "we," "our," and "us" may, depending
on the context, refer to Advanced Photonix, Inc., including its consolidated
subsidiaries.

                                        i


           CAUTIONARY STATEMENTS REGARDING FORWARD LOOKING STATEMENTS

      We believe it is important to communicate our expectations to investors.
However, there may be events in the future that we are not able to predict
accurately or that we do not fully control that could cause actual results to
differ materially from those expressed or implied. This prospectus and the
documents incorporated by reference in this prospectus may contain forward
looking statements made pursuant to the safe harbor provisions of the Private
Securities Litigation Reform Act of 1995. Such statements are subject to certain
factors, risks and uncertainties that may cause actual results, events and
performances to differ materially from those referred to in such statements.
These risks include statements that address operating performance, events or
developments that we expect or anticipate will occur in the future, such as
projections about our future results of operations or our financial condition,
research, development and commercialization of our product candidates,
anticipated trends in our business, manufacture of sufficient and acceptable
quantities of our proposed products, our strategies to grow the company, and
other risks that could cause actual results to differ materially. The forward
looking statements are based on information available to us on the date hereof,
and we assume no obligation to update any such forward looking statements.

                                       ii


                                   THE COMPANY

      This summary contains basic information about us and the resale by the
selling stockholders of our Class A common stock. Because it is only a summary,
it does not contain all of the information that you should consider before
purchasing our Class A common stock. You should read this entire prospectus,
including the information set forth under "Risk Factors" and the information
incorporated by reference in this prospectus.

OUR BUSINESS

      We are engaged in the development and manufacture of custom optoelectronic
solutions, serving a variety of global Original Equipment Manufacturer (OEM)
markets. While we specialize in silicon-based custom photodiode assemblies, our
product families range from custom light detection assemblies, including our
patented Avalanche Photodiode technology, to light emitting diode (LED)
assemblies. We support the customer from the initial concept and design phase of
the product, through to full-scale production and test. We have two
manufacturing and wafer fabricating facilities, one in Camarillo, CA and one in
Dodgeville, WI.

      We design and manufacture silicon-based optoelectronic components and
assemblies for a global OEM customer base. The core technology used in the
majority of our products is silicon-based photodiodes. Photodiodes sense light
of varying wavelengths and intensity and convert that light into electrical
signals. We manufacture photodiodes of varying complexity, from basic PIN
(positive-intrinsic-negative) photodiodes to the more sophisticated avalanche
photodiode (APD). APD is a specialized silicon photodiode capable of detecting
very low light levels due to an internal gain phenomenon known as avalanching.
All devices are designed by our experienced engineering staff, and fabricated in
two state-of-the-art clean rooms. Our basic products and technologies include
the following:

   -  PIN photodetectors - spectrally enhanced, both single and multi-element

   -  Silicon High Resistivity p-type Detectors

   -  Photodetector hybrids, which include signal amplification circuitry within
      the detector package

   -  Custom LED assemblies and LED displays

   -  FILTRODE(R) - patented technology integrating optical filters directly on
      photodiode chips

   -  APDs - discrete, with and without thermoelectric coolers, and with
      integrated modules

   These products serve customers in a variety of global markets, typically
North America, Asia, Europe and Australia. The target markets served by us are
Military & Aerospace, Industrial & Commercial, Medical, Automotive and
Communications.

      We were incorporated under the laws of the State of Delaware in June 1988.
Our principal executive offices are located at 1240 Avenida Acaso, Camarillo,
California 93012, and our telephone number is (805) 987-0146.

                                       1


THE PRIVATE PLACEMENT

      On October 12, 2004, we completed a private placement and issued an
aggregate of $5.0 million principal amount of convertible notes. The convertible
notes will mature on September 30, 2007, bear interest at a rate of the Prime
Rate plus 1.0% and are convertible into shares of our Class A common stock at
the investors' option at an initial conversion price of $1.9393 per share,
subject to adjustment. The convertible notes are secured by a lien on all of our
assets. The lien is subordinated to the lien securing our existing bank line of
credit. The convertible notes are guaranteed by all of our subsidiaries. $2.5
million of the purchase price for the convertible notes is required to be held
in a cash collateral account subject to release upon satisfaction of certain
conditions including, among others:

            -     $1,250,000 will be released if we enter into a definitive
                  agreement for a permitted acquisition prior to January 31,
                  2005 (referred to in this prospectus as the "agreement
                  condition"); and

            -     the balance held in the cash collateral account will be
                  released if we consummate the permitted acquisition prior to
                  March 31, 2005 (referred to in this prospectus as the
                  "transaction condition").

      If we fail to satisfy the agreement condition discussed above, the holders
of the convertible notes have the right to require us to redeem up to 50.0% of
the original principal amount of the notes, plus accrued and unpaid interest and
late charges, if any. If we fail to satisfy the transaction condition discussed
above, the holders of the convertible notes have the right to require us to
redeem up to 25.0% of the original principal amount of the notes, plus accrued
and unpaid interest and late charges, if any.

      We granted the purchasers of the convertible notes a warrant to purchase
up to an aggregate of 850,822 additional shares of our Class A common stock at
$2.1156 per share exercisable during the period commencing on March 12, 2005 and
expiring on March 12, 2010. We also granted the investors a right (which we
refer to in this prospectus as an additional investment right) to purchase up to
an aggregate of $5.0 million principal amount of additional convertible notes
with an initial conversion price of $2.1156 per share and additional warrants to
purchase 850,822 shares of Class A common stock at an exercise price of $2.1156
(exercisable during the period commencing on March 12, 2005 and expiring on
March 12, 2010) upon the exercise of these additional investment rights, which
expire one year following the effective date of the registration statement of
which this prospectus is a part. We agreed with the purchasers of these
securities to register these securities for public resale. The shares of Class A
common stock issuable to the selling stockholders upon conversion of the
additional convertible notes and warrants which are issuable upon exercise of
the additional investment rights are not covered by this prospectus and are nor
being registered in the registration statement of which this prospectus is a
part. This prospectus has been prepared, and the registration statement of which
this prospectus is a part has been filed with the SEC, in order to satisfy our
obligations to the purchasers of these securities.

      Accordingly, this prospectus covers the resale by the selling stockholders
of shares of our Class A common stock issued upon conversion of the selling
stockholders' convertible notes and

                                       2


the exercise of their warrants, but not including the shares of our Class A
common stock issuable upon conversion of convertible notes and exercise of
warrants which may be acquired by them upon exercise of their additional
investment rights.

      On March 9, 2005, we entered into a letter agreement (referred to in this
prospectus as the "amendment") amending certain of the definitive agreements we
entered into in connection with the private placement. The amendment amended the
Securities Purchase Agreement dated October 11, 2004 by and among us and the
investors to (i) extend the agreement condition from January 31, 2005 to March
11, 2005 and (ii) extend the transaction condition from March 31, 2005 to May 1,
2005. The amendment amended the warrants issued and, the additional warrants to
be issued, in the private placement to the investors to reduce the exercise
price from $2.1156 per share of our Class A common stock to $1.78 per share. In
addition, the notes issued in connection with the private placement were amended
to provide that the interest rate shall not be less than 6.5% at any time.

      Investing in our securities involves risks. You should carefully consider
the information under "Risk Factors" beginning on page 4 of this prospectus and
the other information included or incorporated by reference in this prospectus
before investing in our securities. Our Class A common stock is listed on the
American Stock Exchange and trades under the symbol "API." On March 30, 2005,
the last reported sale price of our Class A common stock on the American Stock
Exchange was $2.30 per share.

RECENT DEVELOPMENTS

      On March 8, 2005, we and our wholly owned subsidiary, Michigan Acquisition
Sub, LLC (referred to in this prospectus as "Newco"), a Delaware limited
liability company, entered into an Agreement and Plan of Merger (referred to in
this prospectus as the "merger agreement") with Picotronix, Inc. (doing business
as and referred to in this prospectus as "Picometrix"), a Michigan corporation,
Robin Risser and Steven Williamson, the stockholders of Picometrix, whereby
Picometrix will merge with and into Newco, with Newco being the surviving
entity. The merger consideration to be paid to the stockholders of Picometrix at
the closing of the transaction will consist of $3,500,000 in cash, four-year
promissory notes in the aggregate principal amount of $2,900,500 (referred to in
this prospectus as the "API Notes") and 2,575,000 shares of our Class A common
stock.

      The API Notes will be payable in four annual installments with the first
being a payment of $500,000, the second being a payment of $550,000, the third
being a payment of $900,000 and the fourth being a payment of $950,500. The API
Notes will bear an interest rate of prime plus 1.0% and will be secured by all
of the intellectual property of Picometrix. We will have the option of prepaying
the API Notes without penalty.

      The transaction is anticipated to close in April, subject to customary
closing conditions, including American Stock Exchange listing of our shares of
Class A common stock to be issued in connection with the transaction.
Picometrix, a privately held company located in Ann Arbor, MI, is a developer
and manufacturer of ultra high-speed photoreceivers and instrumentation for the
telecommunication, data communication, and test and measurement markets.

                                       3


      Upon the signing of the merger agreement, we provided a loan in the amount
of approximately $4,200,000 to Picometrix, the proceeds of which were used to
prepay existing long-term indebtedness of Picometrix to a third party. The loan
made to Picometrix is secured by all of the intellectual property of Picometrix.
The loan to Picometrix will be contributed to the capital of Newco at the
closing of the transaction. In the event the transaction does not close, the
loan will mature 12 months after issuance and will bear interest at the annual
rate of prime plus 1.0%.

                                  RISK FACTORS

      Investing in our Class A common stock involves a high degree of risk and
uncertainty. You should carefully consider the risks and uncertainties described
below before investing in our Class A common stock. Our business, prospects,
financial condition and results of operations could be adversely affected due to
any of the following risks. In that case, the value of our Class A common stock
could decline, and you could lose all or part of your investment.

RISKS RELATING TO OUR BUSINESS

WE ARE DEPENDENT UPON SEVERAL SUPPLIERS FOR A SIGNIFICANT PORTION OF RAW
MATERIALS USED IN THE MANUFACTURING OF OUR PRODUCTS.

      The principal raw materials we use in the manufacture of our semiconductor
components and sensor assemblies are silicon wafers, chemicals and gases used in
processing wafers, gold wire, lead frames, and a variety of packages and
substrates, including metal, printed circuit board, flex circuits, ceramic and
plastic packages. All of these raw materials can be obtained from several
suppliers. From time to time, particularly during periods of increased
industry-wide demand, silicon wafers and other materials have been in short
supply. Any significant interruption in the supply of these raw materials could
have a material adverse effect on us

CUSTOMER ACCEPTANCE OF OUR PRODUCTS IS DEPENDENT ON OUR ABILITY TO MEET CHANGING
REQUIREMENTS.

      Customer acceptance of our products is significantly dependent on our
ability to offer products that meet the changing requirements of our customers,
including the military, medical institutions, industrial laboratories,
government agencies and industrial corporations. Any decrease in the level of
customer acceptance of our products could have a material adverse effect on us.

WE ARE SUBJECT TO MARKET RISK THROUGH OUR SALES TO OVERSEAS MARKETS.

      A growing amount of our sales are being derived from overseas markets.
These international sales are primarily focused in Europe and the Middle-East.
These operations are

                                       4


subject to risks that are inherent in operating in foreign countries, including
the following:

            -     foreign countries could change regulations or impose currency
                  restrictions and other restraints;

            -     changes in foreign currency exchange rates and hyperinflation
                  or deflation in the foreign countries in which we operate;

            -     exchange controls;

            -     in some countries, there is a risk that the government may
                  expropriate assets;

            -     some countries impose burdensome tariffs and quotas;

            -     political changes and economic crises may lead to changes in
                  the business environment in which we operate;

            -     international conflict, including terrorist acts, could
                  significantly impact our financial condition and results of
                  operations; and

            -     economic downturns, political instability and war or civil
                  disturbances may disrupt distribution logistics or limit sales
                  in individual markets.

      In addition, we utilize third-party "Distributors" to act as our
representative for the geographic region that they have been assigned. These
"Distributors" are responsible for maintaining customer account management and
in some cases maintaining an inventory of products for those customers within
their geographic region. Our success is dependent on these "Distributors"
finding new customers and receiving new orders from existing customers.

OUR FUTURE PERFORMANCE IS DEPENDENT UPON FINDING NEW CUSTOMERS AND RETAINING OUR
EXISTING CUSTOMERS.

      Customers normally purchase our products and incorporate them into
products that they in turn sell in their own markets on an ongoing basis. As a
result, our sales are dependent upon the success of our customers' products and
our future performance is dependent upon our success in finding new customers
and receiving new orders from existing customers.

      In several of our market segments, quality and/or reliability of our
products is a major concern for our customers, not only upon the initial
manufacture of the product, but for the life of the product. Many of our
products are used in remote locations, or higher value assembly, making
servicing of our products not feasible. Any failure of the quality and/or
reliability of our products could have an adverse affect on us and our ability
to maintain or attract customers.

CUSTOMER ORDERS ARE SUBJECT TO CANCELLATION OR MODIFICATION AT ANY TIME.

                                       5


      Our sales are made primarily pursuant to standard purchase orders for
delivery of products. However, by industry practice, orders may be canceled or
modified at any time. When a customer cancels an order, they are responsible for
all finished goods, all costs, direct and indirect, incurred by us, as well as a
reasonable allowance for anticipated profits. No assurance can be given that we
will receive these amounts after cancellation. The current backlog contains only
those orders for which we have received a confirmed purchase order and also
includes contracts which have scheduled shipping dates beyond the upcoming
fiscal year. As such, the current backlog represents only a portion of expected
annual revenues for fiscal year 2005. At October 31, 2004, we had approximately
$9.0 million in backlog.

THE MARKETS FOR MANY OF OUR PRODUCTS ARE CHARACTERIZED BY CHANGING TECHNOLOGY.

      The markets for many of our products are characterized by changing
technology, new product introductions and product enhancements, and evolving
industry standards. The introduction or enhancement of products embodying new
technology or the emergence of new industry standards could render existing
products obsolete or result in short product life cycles. Accordingly, our
ability to compete is in part dependent on our ability to continually offer
enhanced and improved products.

WE ARE DEPENDENT ON KEY IN-HOUSE MANUFACTURING EQUIPMENT OR PROCESSES TO DELIVER
A CUSTOM PRODUCT (SOLUTION) WITH THE HIGHEST PERFORMANCE AND SHORT TIME TO
MARKET.

      We depend on key in-house manufacturing equipment and assembly processes.
We believe that these key manufacturing and assembly process give us the
flexibility and responsiveness to meet our customer delivery schedule and
performance specification with a custom product. This value proposition is an
important component of our offering to our customers. A loss of these
capabilities could have an adverse effect on our existing operations and new
business growth.

CHANGES IN THE SPENDING PRIORITIES OF THE FEDERAL GOVERNMENT CAN MATERIALLY
ADVERSELY AFFECT OUR BUSINESS.

      In fiscal 2004, approximately 37.0 % of our sales was related to products
purchased by military contractors. Our business depends upon continued federal
government expenditures on defense, intelligence, aerospace and other programs
that we support. In fiscal 2004, our sales to military contractors enjoyed a
strong steady growth rate. In addition, foreign military sales are affected by
U.S. Government regulations, regulations by the purchasing foreign government
and political uncertainties in the U.S. and abroad. There can be no assurance
that the U.S. defense and military budget will continue to grow or that sales of
defense related items to foreign governments will continue at present levels. In
addition, the terms of defense contracts with the U.S. Government generally
permit the Government to terminate such contracts, with or without cause, at any
time. Any unexpected termination of a significant U.S. Government contract with
a military contractor that we sell our products to could have a material adverse
effect on us.

                                       6


OUR INDUSTRY IS HIGHLY COMPETITIVE AND FRAGMENTED.

      We compete with a range of companies for the custom optoelectronic and
silicon photodetector requirements of customers in our target markets. We
believe that our principal competitors for sales of custom devices are small to
medium size companies. Because we specialize in custom devices requiring a high
degree of engineering expertise to meet the requirements of specific
applications, we generally do not compete to any significant degree with other
large United States, European or Pacific Rim manufacturers of standard "off the
shelf" optoelectronic components or silicon photodetectors. We cannot assure you
that we will be able to compete successfully in our markets against these or any
future competitors.

OUR INDUSTRY IS SENSITIVE TO CHANGING ECONOMIC CONDITIONS.

      We believe that many factors affect our industry, including consumer
confidence in the economy, interest rates, fuel prices and credit availability.
The overall economic climate or Gross National Product growth has a direct
impact on our customers and the demand for our products. We cannot assure you
that our business will not be adversely affected as a result of an industry or
general economic downturn.

WE ARE SUBJECT TO ENVIRONMENTAL REGULATIONS.

      The photonics industry, as well as the semiconductor industry in general,
is subject to governmental regulations for the protection of the environment,
including those relating to air and water quality, solid and hazardous waste
handling, and the promotion of occupational safety. Various federal, state and
local laws and regulations require that we maintain certain environmental
permits. We believe that we have obtained all necessary environmental permits
required to conduct our manufacturing processes. Changes in the aforementioned
laws and regulations or the enactment of new laws, regulations or policies could
require increases in operating costs and additional capital expenditures and
could possibly entail delays or interruptions of operations.

IF WE ARE UNABLE TO PROTECT OUR INTELLECTUAL PROPERTY RIGHTS ADEQUATELY, THE
VALUE OF OUR PRODUCTS COULD BE DIMINISHED.

      We utilize proprietary design rules and processing steps in the
development and fabrication of our PIN photodiodes and avalanche photodiodes. In
addition, we own 11 patents utilized in our products. There can be no assurance
that any issued patents will provide us with significant competitive advantages,
or that challenges will not be instituted against the validity or enforceability
of any patent owned by us, or, if instituted, that such challenges will not be
successful. The cost of litigation to uphold the validity and to prevent the
infringement of a patent could be substantial and could have a material adverse
effect on our operating results. Furthermore, there can be no assurance that our
APD technology will not infringe on patents or rights owned by others, licenses
to which might not be available to us. Based on limited patent

                                       7


searches, contacts with others knowledgeable in the field of APD technology, and
a review of the published materials, we believe that our competitors hold no
patents, licenses or other rights to the APD technology which would preclude us
from pursuing our intended operations.

      In some cases, we may rely on trade secrets to protect our innovations.
There can be no assurance that trade secrets will be established, that secrecy
obligations will be honored or that others will not independently develop
similar or superior technology. To the extent that consultants, key employees or
other third parties apply technological information independently developed by
them or by others to our projects, disputes might arise as to the proprietary
rights to such information which may not be resolved in our favor.

WE FACE STRONG COMPETITION FOR SKILLED WORKERS.

      Our success depends in large part on its ability to attract and retain
highly qualified scientific, technical, management, and marketing personnel.
Competition for such personnel is intense and there can be no assurance that we
will be able to attract and retain the personnel necessary for the development
and operation of our business.

WE MAY NOT BE ABLE TO SUCCESSFULLY INTEGRATE FUTURE ACQUISITIONS, WHICH COULD
RESULT IN OUR NOT ACHIEVING THE EXPECTED BENEFITS OF THE ACQUISITION, THE
DISRUPTION OF OUR BUSINESS AND AN INCREASE IN OUR COSTS.

      We continually explore opportunities to acquire related businesses, some
of which could be material to us. Our ability to continue to grow may depend
upon identifying and successfully acquiring attractive companies, effectively
integrating these companies, achieving cost efficiencies and managing these
businesses as part of our company.

      We may not be able to effectively integrate the acquired companies and
successfully implement appropriate operational, financial and management systems
and controls to achieve the benefits expected to result from these acquisitions.
Our efforts to integrate these businesses could be affected by a number of
factors beyond our control, such as regulatory developments, general economic
conditions and increased competition. In addition, the process of integrating
these businesses could cause the interruption of, or loss of momentum in, the
activities of our existing business. The diversion of management's attention and
any delays or difficulties encountered in connection with the integration of
these businesses could negatively impact our business and results of operations.
Further, the benefits that we anticipate from these acquisitions may not
develop.

RISKS RELATING TO OUR CLASS A COMMON STOCK

OUR SHARE PRICE HAS BEEN VOLATILE IN THE PAST AND MAY DECLINE IN THE FUTURE.

      Our Class A common stock has experienced significant market price and
volume fluctuations in the past and may experience significant market price and
volume fluctuations in the future in response to factors such as the following,
some of which are beyond our control:

                                       8


   -  quarterly variations in our operating results;

   -  operating results that vary from the expectations of securities analysts
      and investors;

   -  changes in expectations as to our future financial performance, including
      financial estimates by securities analysts and investors;

   -  announcements of technological innovations or new products by us or our
      competitors;

   -  announcements by us or our competitors of significant contracts,
      acquisitions, strategic partnerships, joint ventures or capital
      commitments;

   -  changes in the status of our intellectual property rights;

   -  announcements by third parties of significant claims or proceedings
      against us;

   -  additions or departures of key personnel;

   -  future sales of our ordinary shares; and

   -  stock market price and volume fluctuations.

   Stock markets often experience extreme price and volume fluctuations. Market
fluctuations, as well as general political and economic conditions, such as a
recession or interest rate or currency rate fluctuations or political events or
hostilities in or surrounding the United States, could adversely affect the
market price of our Class A common stock.

   In the past, securities class action litigation has often been brought
against companies following periods of volatility in the market price of its
securities. We may in the future be the target of similar litigation. Securities
litigation could result in substantial costs and divert management's attention
and resources both of which could have a material adverse effect on our business
and results of operations.

FUTURE SALES OF OUR CLASS A COMMON STOCK IN THE PUBLIC MARKET COULD LOWER OUR
STOCK PRICE, AND CONVERSION OF OUR WARRANTS AND ANY ADDITIONAL CAPITAL RAISED BY
US MAY DILUTE YOUR OWNERSHIP IN US.

      We may sell additional shares of Class A common stock in subsequent
offerings. In addition, holders of warrants to purchase our Class A common stock
will, most likely, exercise their warrants to purchase shares of our Class A
common stock after this registration statement is declared effective. We cannot
predict the size of future issuances of our Class A common stock or the effect,
if any, that future issuances and sales of shares of our Class A common stock
will have on the market price of our Class A common stock. Sales of substantial
amounts of our Class A common stock, including shares issued in connection with
the exercise of the warrants, or the perception that such sales could occur, may
adversely affect prevailing market prices for our Class A common stock.

                                       9


SHARES ELIGIBLE FOR PUBLIC SALE IN THE FUTURE COULD DECREASE THE PRICE OF OUR
CLASS A COMMON STOCK AND REDUCE OUR FUTURE ABILITY TO RAISE CAPITAL.

      Sales of substantial amounts of our Class A common stock in the public
market could decrease the prevailing market price of our Class A common stock,
which would have an adverse affect on our ability to raise equity capital in the
future.

WE DO NOT INTEND TO PAY DIVIDENDS.

      We have never declared or paid any cash dividends on our Class A common
stock. We currently intend to retain future earnings, if any, to finance
operations and expand our business and, therefore, do not expect to pay any
dividends in the foreseeable future.

                                 USE OF PROCEEDS

      We will not receive any proceeds from the sale of the shares offered
pursuant to this prospectus. All of the proceeds will be payable solely to the
selling stockholders. We will, however, receive the proceeds from the exercise
of the additional investment rights and the warrants issued to the selling
stockholders if and when they are exercised. We anticipate that the net proceeds
from the exercise of the additional investment rights and the warrants would be
used for future acquisitions, working capital and general corporate purposes.

      The selling stockholders will pay any expenses customarily borne by
selling stockholders (including underwriting discounts, commissions and fees and
expenses of counsel to the extent not required to be paid by us). We will bear
all other costs, fees and expenses incurred in effecting the registration of the
shares covered by this prospectus, including, but not limited to, all
registration and filing fees, listing fees and expenses of our counsel and our
accountants.

                              SELLING STOCKHOLDERS

      The shares of Class A common stock being offered by the selling
stockholders are issuable upon conversion of the convertible notes (excluding
convertible notes issuable upon exercise of additional investment rights which
were issued pursuant to a Securities Purchase Agreement dated as of October 11,
2004) and upon exercise of the warrants (excluding warrants issuable upon
exercise of additional investment rights which were issued pursuant to the
Securities Purchase Agreement). For additional information regarding the
issuance of those convertible notes, warrants and additional investment rights,
see "Prospectus Summary -- The Private Placement" above. We are registering the
shares of Class A common stock in order to permit the selling stockholders to
offer the shares for resale from time to time. Except for the ownership of the
convertible notes, the warrants and the additional investment rights issued
pursuant to the Securities Purchase Agreement, the selling stockholders have not
had any material relationship with us within the past three years.

      The term "selling stockholders" includes the stockholders listed below and
their respective transferees, assignees, pledgees, donees or other successors.
The table below lists the selling stockholders and other information regarding
the beneficial ownership of the shares of

                                       10


Class A common stock by each of the selling stockholders. The second column
lists the number of shares of Class A common stock beneficially owned by each
selling stockholder, based on its ownership of the convertible notes and
warrants, as of March 31, 2005, assuming conversion of all convertible notes
(excluding convertible notes issuable upon exercise of all of the additional
investment rights held by the selling stockholders) and exercise of the warrants
(excluding warrants issuable upon exercise of all of the additional investment
rights held by the selling stockholders) held by the selling stockholders on
that date, without regard to any limitations on conversions or exercise.

      The third column lists the shares of Class A common stock being offered by
this prospectus by the selling stockholders.

      In accordance with the terms of registration rights agreements with the
selling stockholders, this prospectus generally covers the resale of at least
130% of the sum of (i) the number of shares of Class A common stock issuable
upon conversion of the convertible notes (excluding convertible notes issuable
upon exercise of all of the additional investment rights which were issued
pursuant to a Securities Purchase Agreement) as of the trading day immediately
preceding the date the registration statement is initially filed with the SEC
and (ii) the number of shares of Class A common stock issuable upon exercise of
the related warrants (excluding warrants issuable upon exercise of all of the
additional investment rights which were issued pursuant to a Securities Purchase
Agreement) as of the trading day immediately preceding the date the registration
statement is initially filed with the SEC. Because the conversion price of the
convertible notes and the exercise price of the warrants may be adjusted, the
number of shares that will actually be issued may be more or less than the
number of shares being offered by this prospectus. The fourth column assumes the
sale of all of the shares offered by the selling stockholders pursuant to this
prospectus.

      Under the terms of the convertible notes and the warrants, a selling
stockholder may not convert the convertible notes or exercise the warrants to
the extent such conversion or exercise would cause such selling stockholder,
together with its affiliates, to beneficially own a number of shares of Class A
common stock which would exceed 4.99% of our then outstanding shares of Class A
common stock following such conversion or exercise, excluding for purposes of
such determination shares of Class A common stock issuable upon conversion of
the convertible notes which have not been converted and upon exercise of the
warrants and additional investment rights which have not been exercised. The
number of shares in the second column does not reflect this limitation. The
selling stockholders may sell all, some or none of their shares in this
offering. See "Plan of Distribution."

                                       11




                                    Number of Shares
                                   Beneficially Owned     Maximum Number of Shares    Number of Shares to be
                                      Prior to the         to be Sold Pursuant to       Beneficially Owned
Name of Selling Stockholder             Offering            this Prospectus (5)         After the Offering
---------------------------        ------------------     ------------------------    ----------------------  
                                                                             
Smithfield Fiduciary LLC (1)           2,571,805                 3,343,347                       0

Iroquois Capital LP (2)                  171,454                   222,890                       0

Bluegrass Growth Fund, LP (3)            342,907                   445,779                       0

Bluegrass Growth Fund, Ltd (4)           342,907                   445,779                       0


(1) Highbridge Capital Management, LLC ("Highbridge"), is the trading manager of
Smithfield Fiduciary LLC ("Smithfield") and consequently has voting control and
investment discretion over the shares of Class A common stock held by
Smithfield. Glenn Dubin and Henry Swieca control Highbridge. Each of Highbridge
and Messrs. Dubin and Swieca disclaims beneficial ownership of the shares held
by Smithfield.

(2) Joshua Silverman has voting control and investment discretion over
securities held by Iroquois Capital LP. Mr. Silverman disclaims beneficial
ownership of the Class A common stock held by Iroquois Capital LP.

(3) Brian Shatz has voting control and investment discretion over securities
held by Bluegrass Growth Fund, LP. Mr. Shatz disclaims beneficial ownership of
the Class A common stock held by Bluegrass Growth Fund, LP.

(4) Brian Shatz has voting control and investment discretion over securities
held by Bluegrass Growth Fund, Ltd. Mr. Shatz disclaims beneficial ownership of
the Class A common stock held by Bluegrass Growth Fund, Ltd.

(5) The number of shares of Class A common stock to be sold by the selling
stockholders is based on (i) 100% of the number of shares of Class A common
stock issuable to the selling stockholders upon conversion of the convertible
notes and exercise of the warrants, and (ii) 30% of the number of shares of
Class A common stock issuable to the selling stockholders representing a good
faith estimate of the maximum number of additional shares that may become
issuable pursuant to a contractual agreement with the selling stockholders.

                              PLAN OF DISTRIBUTION

      We are registering the shares of Class A common stock issuable upon
conversion of the convertible notes (excluding convertible notes issuable upon
exercise of the additional investment rights) and upon exercise of the warrants
(excluding warrants issuable upon exercise of the additional investment rights)
to permit the resale of these shares of Class A common stock by the holders of
the convertible notes and warrants from time to time after the date of this
prospectus. We will not receive any of the proceeds from the sale by the selling
stockholders of the shares of Class A common stock. We will bear all fees and
expenses incident to our obligation to register the shares of Class A common
stock. We will not be paying any underwriting discounts or commissions in this
offering. We have also agreed with the selling stockholders to reimburse them
for fees and disbursement in an amount not to exceed $15,000 incurred in
connection with this registration statement

                                       12


      The selling stockholders may sell all or a portion of the shares of Class
A common stock beneficially owned by them and offered hereby from time to time
directly or through one or more underwriters, broker-dealers or agents. If the
shares of Class A common stock are sold through underwriters or broker-dealers,
the selling stockholders will be responsible for underwriting discounts or
commissions or agent's commissions. The shares of Class A common stock may be
sold in one or more transactions at fixed prices, at prevailing market prices at
the time of the sale, at varying prices determined at the time of sale, or at
negotiated prices. These sales may be effected in transactions, which may
involve crosses or block transactions, such as:

      -     sales on any national securities exchange or quotation service on
            which the securities may be listed or quoted at the time of sale;

      -     sales in the over-the-counter market;

      -     transactions otherwise than on these exchanges or systems or in the
            over-the-counter market;

      -     the writing of options, whether such options are listed on an
            options exchange or otherwise;

      -     ordinary brokerage transactions and transactions in which the
            broker-dealer solicits purchasers;

      -     block trades in which the broker-dealer will attempt to sell the
            shares as agent but may position and resell a portion of the block
            as principal to facilitate the transaction;

      -     purchases by a broker-dealer as principal and resale by the
            broker-dealer for its account;

      -     an exchange distribution in accordance with the rules of the
            applicable exchange;

      -     privately negotiated transactions;

      -     short sales;

      -     sales pursuant to Rule 144;

      -     sales through broker-dealers who may agree with the selling
            stockholders to sell a specified number of such shares at a
            stipulated price per share;

      -     a combination of any such methods of sale; and

      -     any other method permitted pursuant to applicable law.

      If the selling stockholders effect such transactions by selling shares of
Class A common stock to or through underwriters, broker-dealers or agents, such
underwriters, broker-dealers or agents may receive commissions in the form of
discounts, concessions or commissions from the selling stockholders or
commissions from purchasers of the shares of Class A common stock for

                                       13


whom they may act as agent or to whom they may sell as principal (which
discounts, concessions or commissions as to particular underwriters,
broker-dealers or agents may be in excess of those customary in the types of
transactions involved). In connection with sales of the shares of Class A common
stock or otherwise, the selling stockholders may enter into hedging transactions
with broker-dealers, which may in turn engage in short sales of the shares of
Class A common stock in the course of hedging in positions they assume. The
selling stockholders may also sell shares of Class A common stock short and
deliver shares of Class A common stock covered by this prospectus to close out
short positions and to return borrowed shares in connection with such short
sales. The selling stockholders may also loan or pledge shares of Class A common
stock to broker-dealers that in turn may sell such shares.

      The selling stockholders may pledge or grant a security interest in some
or all of the convertible notes, warrants, additional investment rights or
shares of Class A common stock owned by them and, if they default in the
performance of their secured obligations, the pledgees or secured parties may
offer and sell the shares of Class A common stock from time to time pursuant to
this prospectus or any amendment to this prospectus under Rule 424(b)(3) or
other applicable provision of the Securities Act of 1933, as amended, amending,
if necessary, the list of selling stockholders to include the pledgee,
transferee or other successors in interest as selling stockholders under this
prospectus. The selling stockholders also may transfer and donate the shares of
Class A common stock in other circumstances in which case the transferees,
donees, pledgees or other successors in interest will be the selling beneficial
owners for purposes of this prospectus.

      The selling stockholders and any broker-dealer participating in the
distribution of the shares of Class A common stock may be deemed to be
"underwriters" within the meaning of the Securities Act, and any commission
paid, or any discounts or concessions allowed to, any such broker-dealer may be
deemed to be underwriting commissions or discounts under the Securities Act. At
the time a particular offering of the shares of Class A common stock is made, a
prospectus supplement, if required, will be distributed which will set forth the
aggregate amount of shares of Class A common stock being offered and the terms
of the offering, including the name or names of any broker-dealers or agents,
any discounts, commissions and other terms constituting compensation from the
selling shareholders and any discounts, commissions or concessions allowed or
reallowed or paid to broker-dealers.

      Under the securities laws of some states, the shares of Class A common
stock may be sold in such states only through registered or licensed brokers or
dealers. In addition, in some states the shares of Class A common stock may not
be sold unless such shares have been registered or qualified for sale in such
state or an exemption from registration or qualification is available and is
complied with.

      There can be no assurance that any selling stockholder will sell any or
all of the shares of Class A common stock registered pursuant to the
registration statement, of which this prospectus forms a part.

      The selling stockholders and any other person participating in such
distribution will be subject to applicable provisions of the Securities Exchange
Act of 1934, as amended, and the

                                       14


rules and regulations thereunder, including, without limitation, Regulation M of
the Exchange Act, which may limit the timing of purchases and sales of any of
the shares of Class A common stock by the selling stockholders and any other
person participating in this offering. Regulation M may also restrict the
ability of any person engaged in the distribution of the shares of Class A
common stock to engage in market-making activities with respect to the shares of
Class A common stock. All of the foregoing may affect the marketability of the
shares of Class A common stock and the ability of any person or entity to engage
in market-making activities with respect to the shares of Class A common stock.

      We will pay all expenses of the registration of the shares of our Class A
common stock pursuant to the registration rights agreement, estimated to be
$15,000 in total, including, without limitation, SEC filing fees and expenses of
compliance with state securities or "blue sky" laws. However, the selling
stockholders will pay all underwriting discounts and selling commissions, if
any. We have agreed to indemnify the selling stockholders against liabilities,
including some liabilities under the Securities Act, in accordance with the
registration rights agreements, or the selling shareholders will be entitled to
contribution. We may be indemnified by the selling stockholders against civil
liabilities, including liabilities under the Securities Act that may arise from
any written information furnished to us by the selling stockholder specifically
for use in this prospectus, in accordance with the related registration rights
agreements or we may be entitled to contribution.

      Once sold under the registration statement, of which this prospectus forms
a part, the shares of Class A common stock will be freely tradable in the hands
of persons other than our affiliates.

                                  LEGAL MATTERS

      Dornbush Schaeffer Strongin & Weinstein, LLP, New York, New York, will
pass on certain legal matters in connection with the offering, including the
validity of the issuance of the shares being offered hereby.

                                     EXPERTS

      The consolidated financial statements incorporated in this prospectus by
reference from our Annual Report on Form 10-K for the year ended March 28, 2004
have been audited by Farber & Hass LLP, an independent registered public
accounting firm, as stated in their report, which is incorporated herein by
reference, and have been so incorporated in reliance upon the report of such
firm given upon their authority as experts in accounting and auditing.

                                       15


                       WHERE YOU CAN FIND MORE INFORMATION

      We file annual, quarterly and current reports, proxy statements and other
information with the SEC. You may read and copy any public offering document we
file, including a copy of the registration statement on Form S-3 of which this
prospectus is a part, without charge at the SEC's Public Reference Room, 450
Fifth Street, N.W., Room 204, Washington, D.C. 20549. You can also request
copies of all or any portion of these documents by writing the Public Reference
Section and paying certain prescribed fees. Please call the SEC at
1-800-SEC-0330 for further information on the Public Reference Section.
Additionally, these documents are available to the public from the SEC's web
site at http://www.sec.gov.

      The SEC allows us to "incorporate by reference" into this prospectus the
information we file with the SEC. This means that we are disclosing important
information to you by referring to other documents. The information incorporated
by reference s considered to be part of this prospectus, except for any
information superceded by information contained directly in this prospectus.
Information that we file later with the SEC under the Exchange Act will
automatically update information in this prospectus. In all cases, you should
rely on the later information over different information included in this
prospectus. We incorporate by reference the documents listed below and any
future filings made with the SEC under Section 13(a), 13(c), 14 or 15(d) of the
Exchange Act until this offering is completed:

   - Annual Report on Form 10-KSB for the fiscal year ended March 28, 2004;

   - Current Report on Form 8-K, filed on August 11, 2004;

   - Quarterly Report on Form 10-QSB for the quarter ended June 27, 2004;

   - Current Report on Form 8-K, filed on October 12, 2004;

   - Current Report on Form 8-K, filed on November 9, 2004;

   - Current Report on Form 8-K, filed on November 10, 2004;

   - Quarterly Report on Form 10-QSB for the quarter ended September 26, 2004;

   - Current Report on Form 8-K filed on December 23, 2004;

   - Current Report on Form 8-K filed on February 9, 2005;

   - Current Report on Form 8-K filed on February 10, 2005;

   - Current Report on Form 8-K filed on February 11, 2005;

   - Quarterly Report on Form 10-QSB for the quarter ended December 26, 2004;

                                       16


   - Current Report on Form 8-K filed on March 14, 2005;

   - Current Report on Form 8-K/A filed on March 16, 2005;

   - Quarterly Report on Form 10-QSB/A for the quarter ended December 26, 2004;
   and

   - The description of our Class A common stock contained in our Registration
   Statement on Form 8-A dated January 16, 1991 filed under the Exchange Act,
   including any amendments or reports filed for the purposes of updating such
   description.

      You may request a copy of these filings, or any other documents or other
information referred to in, or incorporated by reference in, this prospectus, at
no cost, by writing or calling us at the following address or telephone number:

                             Advanced Photonix, Inc.
                               1240 Avenida Acaso
                           Camarillo, California 93012
                              Attention: Secretary
                                 (805) 987-0146

      Exhibits to any documents incorporated by reference in this prospectus
will not be sent, however, unless those exhibits have been specifically
referenced in this prospectus.

                                 INDEMNIFICATION

      Our Certificate of Incorporation allows us to indemnify our officers and
directors to the maximum extent allowed under Delaware law. This includes
indemnification for liabilities which could arise under the Securities Act.
Insofar as we are permitted to indemnify our officers and directors, we have
been informed that in the opinion of the SEC such indemnification is against
public policy as expressed in the Securities Act and is therefore unenforceable.

                                       17


                             ADVANCED PHOTONIX, INC.

                               4,457,795 Shares of

                              Class A Common Stock

                                   PROSPECTUS

                              ___________ __, 2005

    PROSPECTIVE INVESTORS MAY RELY ONLY ON THE INFORMATION CONTAINED IN THIS
  PROSPECTUS. NEITHER ADVANCED PHOTONIX, INC. NOR ANY SELLING STOCKHOLDER HAS
 AUTHORIZED ANYONE TO PROVIDE PROSPECTIVE INVESTORS WITH INFORMATION DIFFERENT
   FROM THAT CONTAINED OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS. THIS
    PROSPECTUS IS NOT AN OFFER TO SELL NOR IS IT SEEKING AN OFFER TO BUY THE
  SHARES OF OUR CLASS A COMMON STOCK BEING OFFERED HEREBY IN ANY JURISDICTION
   WHERE THE OFFER OR SALE IS NOT PERMITTED. THE INFORMATION CONTAINED IN THIS
PROSPECTUS IS CORRECT ONLY AS OF THE DATE OF THIS PROSPECTUS, REGARDLESS OF THE
TIMES OF THE DELIVERY OF THIS PROSPECTUS OR ANY SALE OF THE SHARES OF OUR CLASS
                                 A COMMONSTOCK.



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

      We have agreed to bear all expenses relating to the registration of our
Class A common stock registered pursuant to the registration statement of which
this prospectus is a part (other than underwriter's discounts and commissions to
be paid by the selling stockholders). We estimate these expenses to be
approximately $48,964.45, which include the following categories of expenses:



            AMOUNT
            ------ 
                                    
SEC Registration Fee...............    $ 1,964.45
Printing fees......................    $    4,000
Accounting Fees and Expenses.......    $    3,000
Legal Fees and Expenses............    $   35,000
Miscellaneous Expenses.............    $    5,000
                                       ----------
          Total....................    $48,964.45


The foregoing, except for the SEC registration fee, are estimates. We will pay
all of the above expenses. The selling stockholders will be responsible for all
expenses customarily borne by selling stockholders (including underwriting
discounts, commissions and fees and expenses of counsel).

ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS

      Our Certificate of Incorporation contains a provision permitted by
Delaware General Corporation Law that generally eliminates the personal
liability of directors for monetary damages for breaches of their fiduciary
duty, including breaches involving negligence or gross negligence in business
combinations, unless the director has breached his duty of loyalty, failed to
act in good faith, engaged in intentional misconduct or a knowing violation of
law, paid a dividend or approved a stock repurchase in violation of the Delaware
General Corporation Law or obtained an improper personal benefit. This provision
does not alter a director's liability under the federal securities laws. Also
this provision does not affect the availability of equitable remedies, such as
an injunction or rescission, for breach of fiduciary duty.

                                      II-1


      Our By-Laws also provide that directors and officers shall be indemnified
against liabilities arising from their service as directors or officers to the
fullest extent permitted by law, which generally requires that the individual
act in good faith and in a manner he or she reasonably believes to be in or not
opposed to Advanced Photonix's best interests.

ITEM 16. EXHIBITS

(a) Exhibits


  No.                                   Description
-------     --------------------------------------------------------------------
         
2.1         Stock Purchase Agreement dated December 21, 2004, by and among the
            Company and the Stockholders named therein - incorporated by
            reference to Exhibit 2.1 to the Registrant's Form 8-K filed with the
            Securities and Exchange Commission on December 23, 2004

2.2         Agreement and Plan of Merger dated March 8, 2005, by and among the
            Company, Michigan Acquisition Sub, LLC, Picotronix, Inc., Robin
            Risser and Steven Williamson - incorporated by reference to Exhibit
            2.1 to the Registrant's Form 8-K filed with the Securities and
            Exchange Commission on March 14, 2005

3.1         Certificate of Incorporation of the Registrant, as amended -
            incorporated by reference to Exhibit 3.1 to the Registrant's
            Registration Statement on Form S-1,filed with the Securities and
            Exchange Commission on November 23, 1990

3.1.1       Amendment to Certificate of Incorporation of the Registrant, dated
            October 29, 1992-incorporated by reference to the Registrant's March
            31, 1996 Annual Report on Form 10-K

3.1.2       Amendment to Certificate of Incorporation of the Registrant, dated
            September 9, 1992-incorporated by reference to the Registrant's
            March 31, 1996 Annual Report on Form 10-K


                                      II-2



         
3.2         By-laws of the Registrant, as amended - incorporated by reference to
            Exhibit 3.2 to the Registrant's March 30, 2003 Annual Report on Form
            10-KSB

4.1         Rights Agreement, dated September 19, 2002 by and between the
            Company and Continental Stock Transfer and Trust Company,
            Certificate of Designations for the Company's Series B Junior
            Preferred Stock - incorporated by reference to Exhibits 4.1 and 4.2
            to the Registrant's Form 8-K filed with the Securities and Exchange
            Commission on September 26, 2002

4.2         Amended and Restated Rights Agreement, dated February 4, 2005 by and
            between the Company and Continental Stock Transfer and Trust Company
            - incorporated by reference to Exhibits 4.1 to the Registrant's Form
            8-K filed with the Securities and Exchange Commission on February 9,
            2005

5.1         Opinion of Dornbush Schaeffer Strongin & Weinstein, LLP.*

10.1        Advanced Photonix, Inc. 1991 Special Directors Stock Option Plan -
            incorporated by reference to Exhibit 10.9 to the Registrant's March
            31, 1991 Annual Report on Form 10-K

10.2        Advanced Photonix, Inc. 1990 Incentive Stock Option and
            Non-Qualified Stock Option Plan - incorporated by reference to
            Exhibit No. 10.11 to the Registrant's Registration Statement on Form
            S-1, filed with the Securities and Exchange Commission on November
            23, 1990

10.3        Advanced Photonix, Inc. 1997 Employee Stock Option Plan -
            incorporated by reference to Exhibit 10.13 to the Registrant's March
            30, 1997 Annual Report on Form 10-K

10.4        Amendment No. 1 to 1997 Employee Stock Option Plan of Advanced
            Photonix, Inc. - incorporated by reference to Exhibit 10.14 to the
            Registrant's December 28, 1997 Quarterly report on Form 10-Q


                                      II-3



         
10.5        Advanced Photonix, Inc. 2000 Stock Option Plan - incorporated by
            reference to Exhibit 10.1 to the Registrant's Registration Statement
            on Form S-8, filed with the Securities and Exchange Commission on
            March 15, 2001

10.9        Lease Agreement dated February 23, 1998 between Advanced Photonix,
            Inc. and High Tech No. 1, Ltd. - incorporated by reference to
            Exhibit 10.9 to the Registrant's March 29, 1998 Annual Report on
            Form 10-K

10.10       Form of Indemnification Agreement provided to Directors and
            Principal Officers of Advanced Photonix, Inc. - incorporated by
            reference to Exhibit 10.15 to the Registrant's December 28, 1997
            Quarterly report on Form 10-Q

10.11       Employment Agreement dated August 21, 2002 between Advanced
            Photonix, Inc. and Paul D. Ludwig - incorporated by reference to
            Exhibit 10.1 to the Registrant's Form 8-K as filed with the
            Securities and Exchange Commission on September 5, 2002

10.12       Employment Agreement dated February 10, 2003 between Advanced
            Photonix, Inc. and Richard D. Kurtz - incorporated by reference to
            Exhibit 10.12 to the Registrant's March 30, 2003 Annual Report on
            Form 10-KSB

10.13       Securities Purchase Agreement dated October 11, 2004 between
            Advanced Photonix, Inc. and Smithfield Fiduciary LLC, Iroquois
            Capital LP, Bluegrass Growth Fund, LP and Bluegrass Growth Fund,
            Ltd. (the "Buyers") - incorporated by reference to the Registrant's
            Form 8-K as filed with the Securities and Exchange Commission on
            October 12, 2004.

10.13.1     Registration Rights Agreement dated October 11, 2004 between
            Advanced Photonix, Inc. and the Buyers - incorporated by reference
            to the Registrant's Form 8-K as filed with the Securities and
            Exchange


                                      II-4



         
            Commission on October 12, 2004.

10.13.2     Form of Senior Subordinated Convertible Note - incorporated by
            reference to the Registrant's Form 8-K as filed with the Securities
            and Exchange Commission on October 12, 2004.

10.13.3     Form of Warrant - incorporated by reference to the Registrant's Form
            8-K as filed with the Securities and Exchange Commission on October
            12, 2004

10.13.4     Form of Additional Investment Right - incorporated by reference to
            the Registrant's Form 8-K as filed with the Securities and Exchange
            Commission on October 12, 2004

10.13.5     Promissory Note to Picotronix, Inc. dated March 10, 2005 -
            incorporated by reference to Exhibit 10.1 to the Registrant's Form
            8-K filed with the Securities and Exchange Commission on March 14,
            2005

10.13.6     Letter Agreement dated March 9, 2005, by and among the Company and
            Bluegrass Growth Fund, Ltd. - incorporated by reference to Exhibit
            10.2 to the Registrant's Form 8-K filed with the Securities and
            Exchange Commission on March 14, 2005

10.13.7     Letter Agreement dated March 9, 2005, by and among the Company and
            Bluegrass Growth Fund, LP - incorporated by reference to Exhibit
            10.3 to the Registrant's Form 8-K filed with the Securities and
            Exchange Commission on March 14, 2005

10.13.8     Letter Agreement dated March 9, 2005, by and among the Company and
            Smithfield Fiduciary LLC- incorporated by reference to Exhibit 10.4
            to the Registrant's Form 8-K filed with the Securities and Exchange
            Commission on March 14, 2005

10.13.9     Letter Agreement dated March 9, 2005, by and among the Company and
            Iroquois Capital, LP - incorporated by reference to Exhibit 10.5 to
            the Registrant's Form 8-K filed with the Securities and Exchange
            Commission on March 14, 2005

21.1        List of Subsidiaries of Registrant - incorporated by reference to
            Exhibit 21.1 to the Registrant's March 30, 2003 Annual Report on
            Form 10-KSB.


                                      II-5



         
23.1        Consent of Farber & Hass LLP.

23.2        Consent of Dornbush Schaeffer Strongin & Weinstein, LLP. Included in
            Exhibit 5.1.*

24.1        Power of Attorney (contained on Page II-9).


* Previously filed.

ITEM 17. UNDERTAKINGS

The Registrant hereby undertakes:

      (1)(A) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement to: (i) include any
prospectus required by Section 10(a)(3) of the Securities Act; (ii) reflect in
the prospectus any facts or events which, individually or together, represent a
fundamental change in the information in the registration statement.
Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that
which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20 percent change in the
maximum aggregate offering price set forth in the "Calculation of Registration
Fee" table in the effective registration statement; and (iii) include any
additional or changed material information on the plan of distribution.

      (2) That, for determining any liability under the Securities Act of 1933,
treat each post-effective amendment as a new registration statement of the
securities offered, and the offering of the securities at that time to be the
initial bona fide offering.

      (3) To file a post-effective amendment to remove from registration any of
the securities that remain unsold at the end of the offering.

      (4) That, for determining any liability under the Securities Act of 1933,
treat the information omitted from the form of prospectus filed as part of this
registration statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the Registrant under Rule 424(b)(1), or (4), or 497(h) under
the Securities Act as part of this registration statement as of the time the
Commission declared it effective..

      (5) That for determining any liability under the Securities Act, treat
each post-effective amendment that contains a form of prospectus as a new
registration statement for the securities offered in the registration statement,
and that offering of the securities at that time as the initial bona fide
offering of these securities.

                                      II-6


         (6) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 (the "Act") may be permitted to directors, officers and
controlling persons of the Registrant pursuant to the foregoing provisions, or
otherwise, the Registrant has been advised that in the opinion of the Securities
and Exchange Commission such indemnification is against public policy as
expressed in the Act and is, therefore, unenforceable.

                                      II-7


                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, as amended,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Camarillo, State of California on the 31st day
of March, 2005.

                                          ADVANCED PHOTONIX, INC.

                                          By: /s/ Richard D. Kurtz
                                             ------------------------------
                                             Name: Richard D. Kurtz
                                             Title: Chief Executive Officer

                                      II-8


                                POWER OF ATTORNEY

      KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Richard D. Kurtz, his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign any
or all amendments (including post-effective amendments) to this Registration
Statement, and to file the same, with all exhibits thereto, and other documents
in connection therewith, with the Securities and Exchange Commission, granting
unto said attorney-in-fact and agent, full power and authority to do and perform
each and every act and thing requisite and necessary to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-in-fact and agent
or his substitutes may lawfully do or cause to be done by virtue hereof.

      Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.



      SIGNATURE                          TITLE                     DATE
-----------------------      ---------------------------      --------------
                                                        
PRINCIPAL EXECUTIVE
OFFICER:
/s/ Richard D. Kurtz 
-----------------------         Chairman of the Board         March 31, 2005
   Richard D. Kurtz          and Chief Executive Officer

PRINCIPAL FINANCIAL AND
ACCOUNTING OFFICER:

/s/ Susan A. Schmidt              Financial Officer           March 31, 2005
-----------------------
   Susan A. Schmidt

DIRECTORS:

/s/ M. Scott Farese                   Director                March 31, 2005
-----------------------
    M. Scott Farese

/s/ Ward Harper              Director     March 31, 2005
-----------------------
   Ward Harper

/s/ Stephen P. Soltwedel     Director     March 31, 2005
-----------------------
   Stephen P. Soltwedel

/s/ Paul D. Ludwig           Director     March 31, 2005
-----------------------
   Paul D. Ludwig


                                      II-9