Document:

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                                                                    EXHIBIT 10.2

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "SECURITIES ACT"), AND MAY NOT BE OFFERED, TRANSFERRED, SOLD, PLEDGED,
HYPOTHECATED, ASSIGNED OR OTHERWISE DISPOSED OF EXCEPT (i) PURSUANT TO A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS WHICH HAS BECOME EFFECTIVE AND IS CURRENT WITH RESPECT TO THIS NOTE, OR
(ii) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT BUT
ONLY IF (A) THE HOLDER HEREOF HAS FIRST OBTAINED THE WRITTEN OPINION OF COUNSEL
TO ADVANCED PHOTONIX INC. (THE "COMPANY"), OR OTHER COUNSEL REASONABLY
ACCEPTABLE TO THE COMPANY, TO THE EFFECT THAT THE PROPOSED DISPOSITION IS
CONSISTENT WITH ALL APPLICABLE PROVISIONS OF THE SECURITIES ACT AS WELL AS ANY
APPLICABLE STATE SECURITIES LAWS.

                             ADVANCED PHOTONIX, INC.

                             SECURED PROMISSORY NOTE

                      The Transferability of this Note is
                      Restricted as Provided in Section 7

Issuance Date: May 2, 2005            Original Principal Amount: U.S. $1,933,667

         FOR VALUE RECEIVED, Advanced Photonix, Inc., a Delaware corporation
(the "COMPANY"), hereby promises to pay to Steven Williamson ("HOLDER") the
amount set out above as the Original Principal Amount (the "PRINCIPAL") when due
set forth in Section 1 below, and to pay interest ("INTEREST") on any
outstanding Principal at a rate per annum equal to the Interest Rate (as defined
below), from the date set out above as the Issuance Date (the "ISSUANCE DATE")
until the same becomes due and payable, whether upon an Interest Date (as
defined below), acceleration or otherwise (in each case in accordance with the
terms hereof).

         (1) PAYMENT OF PRINCIPAL. The Principal shall be payable in annual
installments of THREE HUNDRED THIRTY THREE THOUSAND THREE HUNDRED THIRTY THREE
DOLLARS ($333,333) on the first anniversary of the Issuance Date, THREE HUNDRED
SIXTY SIX THOUSAND SIX HUNDRED SIXTY SEVEN DOLLARS ($366,667) on the second
anniversary of the Issuance Date, SIX HUNDRED THOUSAND DOLLARS

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($600,000) on the third anniversary of the Issuance Date, and a final
installment of SIX HUNDRED THIRTY THREE THOUSAND SIX HUNDRED SIXTY SEVEN DOLLARS
($633,667) on the fourth anniversary of the Issuance Date (the "MATURITY DATE").

         (2) INTEREST; INTEREST RATE; LATE CHARGE. Interest shall accrue on this
Note at a per annum rate equal to the Prime Rate plus one percent (1%) per annum
(the "INTEREST RATE"); provided, however, that upon the occurrence of an Event
of Default hereunder, the Interest Rate shall increase by four percent (4%)
until cure of such Event of Default or payment of the outstanding principal
balance of, and accrued interest on, this Note upon acceleration thereof as
hereinafter provided. Interest shall accrue from the Issuance Date and shall be
computed on the basis of a 365-day year and actual days elapsed. The Company
shall pay the Holder interest accrued, in arrears, on the last day of each
Calendar Quarter during the period beginning on the Issuance Date and ending
on, and including, the Maturity Date (each, an "INTEREST DATE") with the first
Interest Date being June 30, 2005.

         (3) RIGHTS UPON EVENT OF DEFAULT.

                  (a) Event of Default. Each of the following events shall
constitute an "EVENT OF DEFAULT":

                           (i) the Company's failure to pay to Holder any amount
of Principal, Interest or other amounts when and as due under any of the Related
Notes, except, in the case of a failure to pay Interest under any of the Related
Notes when and as due, in which case only if such failure continues for a period
of at least five (5) Business Days;

                           (ii) the Company, pursuant to or within the meaning
of Title 11, U.S. Code, or any similar Federal, foreign or state law for the
relief of debtors (collectively, "BANKRUPTCY LAW"), (A) commences a voluntary
case, (B) has an involuntary case filled against it that is not dismissed within
sixty (60) days after such filing, (C) consents to the appointment of a
receiver, trustee, assignee, liquidator or similar official (a "CUSTODIAN"), (D)
makes a general assignment for the benefit of its creditors, or (E) admits in
writing that it is generally unable to pay its debts as they become due; or

                           (iii) a court of competent jurisdiction enters an
order or decree under any Bankruptcy Law that (A) is for relief against the
Company in an involuntary case, (B) appoints a Custodian of the Company or (C)
orders the liquidation of the Company.

                  (b) Acceleration. If an Event of Default shall occur and be
continuing, the Holder by written notice to the Company may declare the
Principal outstanding, together with accrued and unpaid Interest, if any, on
this Note to be due and payable immediately, which notice shall specify the
respective Events of Default and that it is a "notice of acceleration." Upon any
such declaration, the Principal outstanding, together with accrued and unpaid
interest, if any, on this Note shall become immediately due and payable.

         (4) SECURITY; RIGHTS OF OFFSET. This Note is secured to the extent and
in the manner set forth in that certain Security Agreement of even date herewith
between the Company and the Holder. Payment of this Note is subject to certain
rights of offset under the terms of that certain Agreement and Plan of Merger,
dated March 8, 2005 by and among the

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Company, Picotronix, Inc., Michigan Acquisition Sub, LLC and the other parties
identified therein (the "MERGER AGREEMENT").

         (5) PREPAYMENT RESTRICTIONS. The Principal of this Note may be prepaid,
in whole or in part, at any time prior to the Maturity Date without penalty or
premium.

         (6) WAIVER AND AMENDMENT. This Note may be amended, modified,
superseded, canceled, renewed or extended, and the terms hereof may be waived
only by a written instrument signed by the Holder and the Company.

         (7) TRANSFER. This Note has not been registered under the Securities
Act of 1933, as amended (the "SECURITIES ACT"), or applicable state securities
laws, and may not be offered, sold, transferred, pledged, hypothecated, assigned
or otherwise disposed of except (a) pursuant to an effective registration
statement under the Securities Act and such State law which is current with
respect to this Note, or (b) pursuant to an exemption from registration under
the Securities Act and such State law if the Holder hereof shall have first
obtained the written opinion of counsel to the Company, or other counsel
reasonably acceptable to the Company, to the effect that the proposed
disposition is consistent with all applicable provisions of the Securities Act
and applicable State securities laws.

         (8) REISSUANCE OF THIS NOTE.

                  (a) Transfer. If this Note is to be transferred, the Holder
shall surrender this Note to the Company, whereupon the Company will forthwith
issue and deliver upon the order of the Holder a new Note (in accordance with
Section 8(c) hereof), registered as the Holder may request, representing the
outstanding Principal being transferred by the Holder and, if less than the
entire outstanding Principal is being transferred, a new Note (in accordance
with Section 8(c) hereof) to the Holder representing the outstanding Principal
not being transferred.

                  (b) Lost, Stolen or Mutilated Note. Upon receipt by the
Company of evidence reasonably satisfactory to the Company of the loss, theft,
destruction or mutilation of this Note, and, in the case of loss, theft or
destruction, of any indemnification undertaking by the Holder to the Company in
customary form and, in the case of mutilation, upon surrender and cancellation
of this Note, the Company shall execute and deliver to the Holder a new Note (in
accordance with Section 8(c) hereof) representing the outstanding Principal.

                  (c) Issuance of New Notes. Whenever the Company is required to
issue a new Note pursuant to the terms of this Note, such new Note (i) shall be
of like tenor with this Note, (ii) shall represent, as indicated on the face of
such new Note, the Principal remaining outstanding (or in the case of a new Note
being issued pursuant to Section 8(a) hereof, the Principal designated by the
Holder which, when added to the Principal represented by the other new Notes
issued in connection with such issuance, does not exceed the Principal remaining
outstanding under this Note immediately prior to such issuance of new Notes),
(iii) shall have an issuance date, as indicated on the face of such new Note,
which is the same as the Issuance Date of this Note, (iv) shall have the same
rights and conditions as this Note, and (v) shall represent accrued Interest on
the Principal and Interest of this Note, from the Issuance Date.

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         (9) CONSTRUCTION; HEADINGS. This Note shall be deemed to be jointly
drafted by the Company and the Holder and shall not be construed against any
person as the drafter hereof. The headings of this Note are for convenience of
reference and shall not form part of, or affect the interpretation of, this
Note.

         (10) NOTICES. Whenever notice is required to be given under this Note,
unless otherwise provided for herein, such notice shall be given in accordance
with Section 11.1 of the Merger Agreement. The Company and the Holder shall
provide written notice of all actions taken pursuant to this Note, including in
reasonable detail a description of such action and the reason therefor.

         (11) CANCELLATION. After all Principal, accrued Interest and other
amounts at any time owed on this Note has been paid in full, this Note shall
automatically be deemed canceled, shall be surrendered to the Company for
cancellation and shall not be reissued.

         (12) GOVERNING LAW. This Note shall be construed and enforced in
accordance with, and all questions concerning the construction, validity,
interpretation and performance of this Note shall be governed by, the internal
laws of the State of Michigan, without giving effect to any choice of law or
conflict of law provision or rule (whether of the State of Michigan or any other
jurisdictions) that would cause the application of the laws of any jurisdictions
other than the State of Michigan.

         (13) SUCCESSORS AND ASSIGNS. All the covenants, stipulations, promises
and agreements by or on behalf of the Company contained in this Note shall be
binding upon the Company's successors and assigns, whether or not so expressed.

         (14) SEVERABILITY. If any provision of this Note is found by a court of
competent jurisdiction to be invalid, illegal or unenforceable, all other
provisions of this Note shall remain in effect, and if any provision is
inapplicable to any person or circumstances, such provision shall nevertheless
remain applicable to all other persons and circumstances.

         (15) CERTAIN DEFINITIONS. For purposes of this Note, the following
terms shall have the following meanings:

                  (a) "BUSINESS DAY" means any day other than Saturday, Sunday
or other day on which commercial banks in The City of Michigan are authorized or
required by law to remain closed.

                  (b) "CALENDAR QUARTER" means each of: the period beginning on
and including January 1 and ending on and including March 31; the period
beginning on and including April 1 and ending on and including June 30; the
period beginning on and including July 1 and ending on and including September
30; and the period beginning on and including October 1 and ending on and
including December 31.

                  (c) "PRIME RATE" shall mean as of a particular date, the prime
rate of interest as published on that date in The Wall Street Journal (Eastern
Edition), and generally defined therein as "the base rate on corporate loans
posted by at least 75% of the nation's 30 largest banks." If The Wall Street
Journal is not published on a date for which the Prime Rate

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must be determined, the Prime Rate shall be the prime rate published in The Wall
Street Journal on the nearest-preceding date on which The Wall Street Journal
was published.

                  (d) "RELATED NOTES" means this Note, together with the
Promissory Note, dated the date hereof, payable to Robin F. Risser in the
initial aggregate principal amount of $966,833, issued pursuant to the Merger
Agreement.

         IN WITNESS WHEREOF, the Company has caused this Note to be duly
executed as of the Issuance Date set out above.

                                             ADVANCED PHOTONIX, INC.

                                             By: /s/ RICHARD D. KURTZ
                                                ---------------------------
                                                Name: Richard D. Kurtz
                                                Title: Chief Executive Officer<PAGE>
                                                                    EXHIBIT 10.3

                              EMPLOYMENT AGREEMENT

         This Agreement, made this May 2, 2005 by and between Advanced Photonix,
Inc. a Delaware corporation (hereinafter called the "Company"), and Robin
Risser, an individual (hereinafter called "Employee").

                                    RECITALS:

         1. The Company develops, manufactures and distributes III-V photodiodes
and III-V based photo detectors and terahertz instrumentation through its
Picometrix operating division (the "Picometrix Business Unit"); and

         2. The Company wishes to employ Employee and utilize his professional
experience, ability, services background and know-how; and

         3. Employee wishes to enter into the employ of the Company on the terms
and conditions contained in this Agreement.

         NOW, THEREFORE, in consideration of the covenants and conditions set
forth in this Agreement and for other good and valuable consideration, which has
been received and which is sufficient, the parties agree to the following terms:

         A. EMPLOYMENT TERM. Subject to the terms and conditions contained in
this Agreement, the Company employs Employee, and Employee agrees to be employed
by the Company, for a three (3) year period from the date of this Agreement
unless this Agreement is terminated in accordance with Section L (the
"Employment Term").

         B. DUTIES. Employee's position with the Company will be General Manager
("GM") of Picometrix Business Unit, reporting directly to the Chief Executive
Officer of the Company. As such, Employee will initially be primarily
responsible for running the day-to-day operations of the Picometrix Business
Unit, including P&L responsibility. As GM, Employee will have the responsibility
for integrating the Picometrix Business Unit's financial reporting into the
Company's corporate structure. Employee shall additionally assist the Company's
VP of Sales and Marketing in ensuring an orderly transfer of the existing
Picometrix customers and potential customers. Effective as of the Company's 2005
Annual Shareholders Meeting currently scheduled for August of such year, the
Company shall cause its Board of Directors to appoint Employee as its Chief
Financial Officer of the Company, reporting directly to the Chief Executive
Officer of the Company. In such capacity, Employee shall have such other
authority and responsibilities as the Chief Executive Officer and the Board of
Directors of the Company reasonably may determine from time to time consistent
with such role, including conducting investor relations and oversight merger and
acquisitions activities of the Company, and shall have such other authority and
responsibilities as the Chief Executive Officer and the Board of Directors of
the Company reasonably may determine from time to time. Employee shall
additionally work with the President of the Company as directed by the Chief
Executive Officer.

         C. ELECTION TO THE BOARD OF DIRECTORS. The Company shall use its
reasonable best

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efforts to cause Employee to be elected to the Company Board of Directors as
soon as reasonably practicable after the date hereof; provided, however, that in
any event, the Company shall cause Employee to be designated as one of the
Company's nominees for election as director at the Company's annual meeting held
in 2005.

         D. TIME AND EFFORTS. Employee shall devote his entire working time,
energy, skill and best efforts to the performance of his duties hereunder in a
manner, which will faithfully and diligently further the business and interest
of the Company. Notwithstanding the foregoing, Employee shall be permitted to
maintain memberships on the Boards of Directors of other organizations
identified to the Company in writing, provided that such activities shall not,
at any time, (i) conflict with Employee's responsibilities hereunder or (ii)
preclude the Company or any Subsidiary (as defined below) of the Company, from
obtaining contracts from any such company or organization. For the purposes of
this Agreement, any corporation with respect to which the Company has the
ability to control more than fifty percent of the voting power shall be a
"Subsidiary" and all such corporations shall be "Subsidiaries".

         E. COMPENSATION AND BENEFITS. Upon execution of this Agreement, the
Company shall pay Employee a "signing bonus" of $30,000. For the services
rendered by Employee to the Company, Employee shall receive a base salary at a
rate of $185,000 per year ("Base Salary"), payable in reasonable installments in
accordance with the Company's regular payroll practices in effect from time to
time and subject to required withholding for taxes. Employee's Base Salary shall
not be subject to decrease during the Employment Term, but is subject to merit
increases as determined by the Compensation Committee of the Corporation's Board
of Directors. In addition to the Base Salary, Employee shall be entitled to a
bonus based on the "Bonus Matrix" for the Company approved by the Company's
Board of Directors and to which the other senior executive officers of the
Company are subject. Employee will be entitled to four (4) weeks of paid
vacation and up to paid sick days each calendar year during the Employment Term
(pro rated for any partial year). In the event of separation of Employee from
the Company, all accrued vacation shall be paid at the then pro-rata hourly base
rate of Employee in accordance with the Company's regular procedures and
practices in effect from time to time. Employee will be entitled to participate
in the group medical insurance and all other fringe benefit plans generally
provided to employees within the Company in accordance with and subject to the
terms of such plans and to other senior executive employees of the Company;
provided, however, that the Company shall pay the premiums necessary to continue
to pay the premiums on the identical individual disability policy, that Employee
had from Picometrix, Inc. prior to the closing contemplated by the Stock
Purchase Agreement, both of which shall be in addition to any group disability
and life insurance provided by the Company to all or any portion of its
employees.

         F. EXPENSES. The Company will reimburse Employee for all reasonable
expense incurred by Employee in connection with the performance of Employee's
duties hereunder, upon receipt of appropriate documentation and in accordance
with the Company's regular reimbursement procedures and practices in effect from
time to time.

         G. DEATH. If Employee dies, all payments hereunder shall cease as of
the date on which Employee's death occurs and the Company shall have no further
obligations or liabilities

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hereunder to Employee's estate or legal representative or otherwise, provided,
however, that any salary, commission or benefits accrued but unpaid as of the
date of termination shall be paid to Employee's estate or legal representative
or otherwise.

         H. CONFIDENTIALITY. Employee knows that the Company has in its
possession business information which is confidential. During Employee's
employment with the Company and after termination of Employee's employment,
Employee will hold in confidence and will not use or reveal, divulge or make
known to any person, company or any other third party, any Proprietary
Information. "Proprietary Information" is any and all information or data,
whether in writing, or learned by Employee orally, by observation or other
sensory detection, relating to any product, product design, service, research,
development, formula, process, method of distribution or delivery, know-how,
trade secret, customer list, contract term, customer pricing, supplier list or
price, business strategy, compensation, plan or practice, operating records,
software, technology, sales data, information or other records, list or
documents used by the Company in operating any of its businesses or otherwise
except (i) information which at the time of disclosure is in the public domain;
(ii) information which, after disclosure, becomes part of the public domain by
publication or otherwise except by breach of this Agreement by Employee; (iii)
information which Employee can establish by competent proof was in his
possession at the time of disclosure by the Company or Picometrix and was not
acquired directly or indirectly, from the Company and such proof is presented
promptly after the Company's disclosure to him; (iv) information which Employee
receives from a third party, provided however, that such information was not
obtained by said third party, directly or indirectly, from the Company; and (v)
information which is required by law to be disclosed. The Proprietary
Information and all other information relating to the Company belong to and will
remain the property of the Company. All Proprietary Information, other
information and property of the Company must be returned to the Company by
Employee upon termination of Employee's employment, however, if Employee is
required to perform any service for the Company after Employee's employment with
the Company is terminated, then Employee shall be entitled to be compensated for
his services at a rate to be mutually agreed by the parties hereto. For purposes
of this Section H and Sections I and J hereof, the term "Company" shall mean
Advanced Photonix, Inc. and all of its subsidiaries.

         I. DISCOVERIES AND WORKS. Any and all writings, inventions,
improvements, process and/or techniques ("Discoveries and Works") which Employee
may make, conceive, discover or develop, either solely or jointly with any other
person or persons, at any time during the term of this Agreement, whether during
working hours or at any other time and whether at the request or upon the
suggestion of the Company or otherwise, which relate to or are useful in
connection with any business now or hereafter carried on or contemplated by the
Company, including developments or expansions of its present fields of
operations, shall be the sole and exclusive property of the Company Employee
shall make full disclosure to the Company of all such writings, inventions,
improvements, process, procedures and techniques, and shall do everything
necessary or desirable to vest the absolute title thereto in the Company.
Employee shall write and prepare all specifications and procedures regarding
such inventions, improvements, process, procedures and techniques, and otherwise
aid and assist the Company so the Company can prepare and present applications
for copyright or Letters of Patent wherever possible, as well as reissues,
renewals, and extensions thereof in all countries in which it may

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<PAGE>

desire to have a copyright or patent protection. Employee shall not be entitled
to any additional or special compensation or reimbursement regarding any and all
such inventions, improvements, process, procedures and techniques.

         J. NON-SOLICITATION AND NON-COMPETITION. The services of Employee will
be unique and extraordinary and essential to the business of the Company,
especially since Employee shall have access to the Company's customer lists,
trade secrets and other privileged and confidential information essential to the
Company's business. Employee therefore agrees that he will not, while he is an
employee of the Company and for a period of one (1) year thereafter, directly or
indirectly solicit, induce, encourage or attempt to influence any employee,
client, customer, salesman or supplier of the Company to cease to do business
with or to terminate his employment with the Company, and shall not utilize for
any such purposes any names and addresses of customers or clients of the Company
or any data on or relating to past, present or prospective (at the time of
termination of Employee's employment) customers or clients of the Company.
Employee further agrees that while he is an employee of the Company, and for a
period of six (6) months thereafter, he will not, without the prior written
approval of the Company, directly or indirectly, within the United States of
America, or any other area in which the Company shall then conduct substantial
operations, whether as an owner, partner, member, employee, officer, director or
stockholder (other than as the owner of less than 5% of the stock of a
corporation registered under the Securities Exchange Act of 1934, as amended),
or in any other capacity, engage in any business activity competitive with the
business of the Company, which is the development, manufacture and distribution
of custom optoelectronic assemblies. Nothing herein shall limit Employee's
obligations under the non-competition and non-solicitation covenants of the
Purchase Agreement.

         K. INJUNCTIVE RELIEF. Employee acknowledges that the restrictions
contained herein are reasonable and necessary in order to protect the legitimate
interest of the Company, and that any violation thereof would result in
irreparable injuries to the Company, and Employee therefore acknowledges that,
in the event of his violation of any of these restrictions, the Company shall be
entitled to seek from any court of competent jurisdiction preliminary and
permanent injunctive relief, without the necessity of posting bonds, as well as
damages and an equitable accounting of all earnings, profits and other benefits
arising from such violation, which rights shall be cumulative and in addition to
any other rights or remedies to which the Company may be entitled.

         L. TERMINATION. This Agreement may be terminated by the Company; (i)
for Cause (as defined below) upon written notice given to Employee; or (ii)
immediately and without notice upon Employee's death or Disability (as defined
below). Employee may resign Employee's employment for Good Reason (as defined
below) so long as Employee tenders Employee's resignation to Company within
sixty (60) days after the occurrence of the event or after Employee first learns
of the event which forms the basis for Employee's termination for Good Reason
(whichever last occurs), citing with specificity such basis.

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<PAGE>

         As used herein:

         "Cause" means (i) Employee being convicted for a felony (or its
equivalent) or fraud; (ii) a material breach by Employee in performing the
duties described in this Agreement which is not cured by Employee within twenty
(20) business days after the Company gives Employee written notice of the
specific breach alleged; or (iii) gross malfeasance, willful misconduct, or
dishonesty in performance of Employee's duties hereunder.

         Disability" with respect to Employee shall be deemed to have occurred
when Employee cannot act as contemplated by this Agreement because Employee is
unable to engage in any substantial gainful activity on behalf of Company by
reason of any medically verifiable physical or mental impairment for a minimum
of six (6) consecutive months.

         "Good Reason" means (i) any reduction in the amount of Employee's Base
Salary, (ii) unilateral and substantial change in Employee's title and duties;
provided, however, that the unilateral change by the surviving or acquiring
entity (or its parent) in Employee's title and duties to a position that is
comparable in salary, title and responsibilities with respect to the acquired or
surviving entity or a division or unit thereof created out of Company or its
assets (whether it becomes a subsidiary, unit or division) to Employee's current
position shall not constitute "Good Reason", (iii) relocation of Employee's work
site more than twenty-five (25) miles from current Ann Arbor, Michigan residence
without Employee's consent, (iv) any material breach by Company of its
obligations under this Agreement that is not remedied by Company within twenty
(20) days of written notice of such breach from Employee, or (v) Company
requires Employee as a condition of employment to perform any illegal act or any
act that is inconsistent with accepted standards of ethical and professional
behavior.

         If Employee's employment is terminated by the Company for Cause, the
Company's obligations under this Agreement will terminate and the Company will
have no obligations to make any additional payments of any kind, including,
without limitation, unpaid commission, provided, however, that the Company shall
pay Employee any accrued and unpaid salary through the date of termination. If
the Company terminates Employee for other than Cause or Employee terminates his
employment for Good Reason, the Company shall pay Employee a lump sum severance
equal to his Base Pay for the remainder of the then remaining Employment Term
and incur such costs as are necessary to continue all benefits (including,
without limitation, the benefits specified in Section E hereof) paid to on
behalf of Employee for such remainder, but in no event for purposes of
Employee's then-effective Base Salary and such benefits for less than, plus, in
any case, accrued but unused vacation and sick days, provided that Employee and
Company shall have executed a reciprocal release in such form as may be
reasonably required by the Company and acceptable to Employee.

         M. VALIDITY. If any provision contained in this Agreement, or the
application of any provision, is held invalid or unenforceable by a court of
competent jurisdiction, that provision will be deemed to be modified in a manner
to make it consistent with the intent of the original provision, so that as
revised, the provision will be valid and enforceable, and this Agreement, and
the application of the provision to persons or circumstances other than those
for which it would be invalid or unenforceable, will not be affected by the
revision.

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<PAGE>

         N. BINDING NATURE OF AGREEMENT. This Agreement shall be binding upon
and inure to the benefit of the Company and its successors and assigns and shall
be binding upon Employee, his heirs and legal representatives.

         O. ENTIRE AGREEMENT. Except as otherwise indicated herein, this
Agreement supersedes all previous agreements between Employee and the Company,
contains the entire understanding and agreement between the parties regarding
Employee's employment with the Company. This Agreement cannot be amended,
modified or supplemented in any respect except by subsequent written agreement
signed by both the Company and Employee.

         P. SURVIVAL. The provisions of Sections H and J shall survive the
expiration or earlier termination of this Agreement, provided, however, that if
Employee is terminated prior to the expiration of this Agreement for reasons
other than cause, then the obligations and duties owed to the Company by
Employee pursuant to Section J of this Agreement shall also terminate.

         Q. PARAGRAPH HEADINGS. The paragraph headings in this Agreement are for
convenience only; they form no part of this Agreement and shall not affect its
interpretation.

         R. NOTICES. All notices, request, demands and other communication
required or permitted under this Agreement shall be in writing and shall be
deemed to have been duly given, made and received if they are in writing and
delivered by hand or sent by facsimile and confirmed, or sent by first class
U.S. mail or nationally recognized overnight delivery service. Notice shall be
deemed effective on the date given if delivered by hand or sent by facsimile (if
transmitted before 5 p.m. PST), one day after being sent if sent by overnight
delivery service, and three days after being sent if mailed by first class U.S.
mail. Addresses for such parties are as set forth below:

                  If to Employee:

                           Mr. Robin Risser
                           1874 Stonehedge Dr.
                           Ann Arbor, MI 48103

                  If to the Company:

                           Advanced Photonix, Inc.
                           1240 Avenida Acaso
                           Camarillo, CA  93102
                           Attention:  Richard Kurtz, CEO
                           Fax:  (805) 484-9935

                  With a copy to:

                           Dornbush Schaeffer Strongin & Weinstein, LLP
                           747 Third Avenue
                           New York, NY 10017
                           Attention: Landey Strongin, Esq.
                           Fax:  (212) 753-7673

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<PAGE>

         S. GOVERNING LAW AND ATTORNEYS' FEES. This Agreement shall be governed
by, and construed in accordance with, the domestic laws of the State of Michigan
without reference to the conflicts of laws provisions thereof.

         T. PARTIES IN INTEREST. Nothing in this Agreement, whether express or
implied, is intended to confer any rights or remedies under or by reason of this
Agreement on any persons other than the parties to it and their respective
successors and assigns, nor is anything in this Agreement intended to relieve or
discharge the obligation or liability of any third persons to any party to this
Agreement, nor shall any provision given any third persons any right of
subrogation or action over or against any party to this Agreement.

         U. COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be an original, but such counterparts together
shall constitute one and the same instrument.

         V. WAIVER AND AMENDMENT. The parties may be written instrument extend
the time for the performance of any of the obligations or other acts of the
other hereunder and may waive (i) any inaccuracies of the other in the
representations or warranties contained in this Agreement or in any document
delivered pursuant hereto, (ii) compliance with any of the covenants,
undertakings or agreements of the other, or satisfaction of any of the
conditions to its or their obligations, contained in this Agreement, or (iii)
the performance (including performance to the satisfaction of a party or its
counsel) by the other of any of its or their obligations set our herein. Any
waiver, amendment or supplement hereof shall be in writing.

         W. CONSTRUCTION. Words and phrases defined in the plural shall also be
used in the singular and vice versa and be construed in the plural or singular
as appropriate and apparent in the context used. Unless otherwise specifically
provided herein, accounting terms shall be given and assigned their usual
meaning and effect as defined.

                         [SIGNATURES ON FOLLOWING PAGE]

                                       7
<PAGE>

                                            ADVANCED PHOTONIX, INC.

                                            By: /s/ RICHARD D. KURTZ
                                               --------------------------------
                                               Richard D. Kurtz, Chief Executive
                                               Officer

                                            /s/ ROBIN F. RISSER
                                            ------------------------------------
                                            ROBIN F. RISSER

                                       8

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