Document:

Loan Agreement

 Exhibit 10.65 
 LOAN AGREEMENT 
 THIS LOAN AGREEMENT (this “Agreement”), dated as of
July 19, 2007, by and among Irvine Sensors Corporation, a Delaware corporation (the “Borrower”), and Longview Fund, L.P., a California limited partnership (“Lender”). 
 WHEREAS, the Borrower and Lender are executing and delivering this Agreement in reliance upon an exemption from securities registration afforded
by the provisions of Section 4(2) and/or Regulation D (“Regulation D”) as promulgated by the United States Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the
“1933 Act”). 
 WHEREAS, the Borrower and Lender desire that, upon the terms and subject to the conditions contained
herein, the Borrower shall issue and deliver to the Lender, and the Lender shall advance $2,000,000 (the “Advance”) for, a promissory note of the Borrower (“Note”) in the principal amount of $2,000,000, a form of
which is annexed hereto as Exhibit A; and 
 WHEREAS, the parties desire that, upon the terms and subject to the conditions
contained herein, the Borrower may issue to Lender, as provided herein, and the Lender may receive, common stock purchase warrants (the “Class B Warrants”), in the form attached hereto as Exhibit B, to purchase 500,000 shares
of the Borrower’s $0.01 par value common stock (“Common Stock”) (the “Class B Warrant Shares”) and 300,000 shares of Common Stock (“Continuation Shares”) if the Borrower does not exercise the
Prepayment Option on or before August 15, 2007. The Class B Warrants, Class B Warrant Shares and Continuation Shares are collectively referred to herein as the “Securities.” 
 NOW, THEREFORE, in consideration of the mutual covenants and other agreements contained in this Agreement the Borrower and Lender hereby agree as
follows: 
 1. (a). Closing. The “Closing Date” shall be the date that the Advance is transmitted by wire transfer or
otherwise credited to or for the benefit of the Borrower. The consummation of the transactions contemplated herein shall take place at the offices of Grushko & Mittman, P.C., 551 Fifth Avenue, Suite 1601, New York, New York 10176, upon the
satisfaction or waiver of all conditions to closing set forth in this Agreement. Subject to the satisfaction or waiver of the terms and conditions of this Agreement, on the Closing Date, Lender shall make the Advance to or for the benefit of the
Borrower and the Borrower shall issue and deliver the Note to the Lender. 
 (b) Conditions to Closing. In addition to the
satisfaction of all conditions and requirements to Closing set forth herein, the Closing shall be subject to: (i) the delivery by Borrower to the Lender of the Omnibus Security Interest Acknowledgement in form and substance acceptable to Lender
granting to Lender a security interest in all of the assets of the Borrower and Subsidiaries, pari passu with the security interest presently held by Lender; (ii) the delivery by the Borrower of an unconditional guaranty made by Optex Systems,
Inc., a Texas corporation, of all obligations owed by the Borrower to Lender pursuant to the Transaction Documents (as defined in Section 4(c) herein); (iii) delivery of the written consents by Alpha Capital Anstalt
(“Alpha”), Barbara R. Mittman and Jolie G. Kahn to the transaction described herein, in form and substance acceptable to Lender; and (iv) the delivery of all other documents and agreements reasonably requested by Lender to
effect the transactions contemplated hereby. 
  

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 2. Prepayment. 
 (a) Prepayment Option. The Borrower may, at its sole option, elect to prepay the Note on or before August 15, 2007 on the terms and conditions set forth in Article III of the Note (the
“Prepayment”). The business day upon which the Prepayment occurs, if any, is the Prepayment Date. In the event the Borrower does not exercise its right to make the Prepayment, then the Borrower must issue and deliver on or before
August 21, 2007 (“Delivery Date”) the Class B Warrants and the Continuation Shares, as described in this Agreement. 
 (b) Class B Warrants. The per Warrant Share exercise price to acquire a Warrant Share upon exercise of a Class B Warrant shall be the lesser of (i) the closing bid price of the Common Stock for the trading day preceding the
Closing Date but not less than $1.30 per share, or (ii) the average of the closing bid prices for the five trading days preceding August 15, 2007, as reported by Bloomberg L.P. for the Principal Market (as defined in Section 6(b)).
The Class B Warrants shall be exercisable until five (5) years after the issue date of the Class B Warrants. All references herein to Warrants and Warrant Shares shall be deemed to include, respectively, the Class B Warrants and Common Stock
issuable upon exercise of the Class B Warrants. 
 (c) Adjustments. The Warrant exercise price and number of Warrant Shares and
Continuation Shares shall be equitably adjusted to offset the effect of stock splits, stock dividends, or pro rata distributions of property or equity interests to the Borrower’s shareholders, and as otherwise described in the Class B Warrant.

 3. Lender’s Representations and Warranties and Covenants. Lender hereby represents and warrants to and covenants and agrees
with the Borrower that: 
 (a) Information on Borrower. The Lender has been furnished with or has had access at the EDGAR Website of
the Commission to the Borrower’s Form 10-K for the year ended October 1, 2006, and all periodic reports filed with the Commission thereafter, but not later than five days before the Closing Date (hereinafter referred to as the
“Reports”). In addition, the Lender has received in writing from the Borrower such other information concerning its operations, financial condition and other matters as the Lender has requested in writing identified thereon as OTHER
WRITTEN INFORMATION (such other information is collectively, the “Other Written Information”), and considered all factors the Lender deems material in deciding on the advisability of investing in the Securities. 
 (b) Information on Lender. The Lender is, and will be at the time of issuance and/or exercise of the Warrants and issuance of the Continuation
Shares, (i) an “accredited investor”, as such term is defined in Regulation D promulgated by the Commission under the 1933 Act, experienced in investments and business matters, a Person that has made investments of a
speculative nature and has purchased securities of United States publicly-owned companies in private placements in the past and, with its representatives, a Person that has such knowledge and experience in financial, tax and other business matters
as to enable the Lender to utilize the information made available by the Borrower to evaluate the merits and risks of and to make an informed investment decision with respect to the proposed purchase, which represents a speculative investment;
(ii) not a broker-dealer under Section 15 of the Exchange Act; (iii) a Person that has the authority and is duly and legally qualified to purchase and own the Securities; and (iv) able to bear the risk of such investment for an
indefinite period and to afford a complete loss thereof. The information set forth on the signature page hereto regarding the Lender is, and will be at the time of issuance and/or exercise of the Warrants and issuance of the Continuation Shares,
accurate. 
  

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 (c) Purchase of Securities. The Lender is, and will be at the time of issuance and/or exercise of
the Warrants and issuance of the Continuation Shares, acquiring the Securities in the ordinary course of its business as principal for its own account for investment only and not with a view toward, or for resale in connection with, the public sale
or any distribution thereof. Such Lender does not and will not have any agreement or understanding, directly or indirectly, with any Person to distribute any of the Securities. 
 (d) Compliance with Securities Act. The Lender understands and agrees that the Securities have not been and will not be registered under the 1933
Act or any applicable state securities laws, by reason of their issuance in a transaction that does not require registration under the 1933 Act (based in part on the accuracy of the representations and warranties of Lender contained herein), and
that such Securities must be held indefinitely unless a subsequent disposition is registered under the 1933 Act or any applicable state securities laws or is exempt from such registration. Notwithstanding anything to the contrary contained in this
Agreement, such Lender may transfer (without restriction and without the need for an opinion of counsel) the Securities to its Affiliates (as defined below) provided that each such Affiliate is an “accredited investor” under Regulation D
and such Affiliate agrees to be bound by the terms and conditions of this Agreement. For the purposes of this Agreement, an “Affiliate” of any person or entity means any other person or entity directly or indirectly controlling,
controlled by or under direct or indirect common control with such person or entity. Affiliate when employed in connection with the Borrower includes each Subsidiary (as defined in Section 5(a)) of the Borrower. For purposes of this definition,
“control” means the power to direct the management and policies of such person or firm, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise. 
 (e) Warrant Shares and Continuation Shares Legend. The Warrant Shares and Continuation Shares shall bear the following or similar legend:

 “THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE
SECURITIES LAWS OR BLUE SKY LAWS. SUCH SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER SAID ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR BLUE SKY
LAWS, OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO IRVINE SENSORS CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (f)
Warrants Legend. The Warrants shall bear the following or similar legend: 
 “THIS WARRANT AND THE COMMON SHARES ISSUABLE UPON
EXERCISE OF THIS WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS OR BLUE SKY LAWS. THIS WARRANT AND THE COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT MAY NOT BE SOLD, OFFERED FOR
SALE, PLEDGED, HYPOTHECATED OR OTHERWISE TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE 

  

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REGISTRATION STATEMENT UNDER SAID ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR BLUE SKY LAWS, OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO IRVINE
SENSORS CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (g) Communication of Offer. At no time was the Lender presented
with or solicited by any leaflet, newspaper or magazine article, radio or television advertisement, or any other form of general advertising or solicited or invited to attend a promotional meeting. 
 (h) Authority; Enforceability. Lender is, and will be at the time of issuance and/or exercise of the Warrants and issuance of the Continuation
Shares, duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization with the requisite partnership power and authority to enter into and to consummate the transactions contemplated by the Transaction
Agreements and otherwise to carry out its obligations hereunder and thereunder. This Agreement and other agreements delivered or deliverable together with this Agreement or in connection herewith have been, and will be at the time of issuance and/or
exercise of the Warrants and issuance of the Continuation Shares, duly authorized, executed and delivered by the Lender and are, and will be at the time of issuance and/or exercise of the Warrants and issuance of the Continuation Shares, valid and
binding agreements enforceable in accordance with their terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors’ rights generally and
to general principles of equity; and Lender has, and will have at the time of issuance and/or exercise of the Warrants and issuance of the Continuation Shares, full corporate power and authority necessary to enter into this Agreement and such other
agreements and to perform its obligations hereunder and under all other agreements entered into by the Lender relating hereto. 
 (i) No
Governmental Review. Lender understands that no United States federal or state agency or any other governmental or state agency has passed on or made recommendations or endorsement of the Securities or the suitability of the investment in the
Securities nor have such authorities passed upon or endorsed the merits of the offering of the Securities. 
 (j) Correctness of
Representations. Lender represents that the foregoing representations and warranties and the representations made by Lender to Borrower in a Selling Securityholder Notice and Questionnaire delivered to Borrower at or about December 29, 2006
are true and correct as of the date hereof and, unless a Lender otherwise notifies the Borrower prior to the Closing Date shall be true and correct as of the Closing Date and as of the issuance of the Class B Warrants and Continuation Shares.

 (k) Consent and Waiver. Lender (i) waives the restrictions set forth in Section 6.1(i) of the Subscription Agreement
dated December 29, 2006 (the “Subscription Agreement”) with respect to the Note and, if and when issued, the Continuation Shares and the Class B Warrant (and the common stock issuable upon exercise thereof); (ii) waives
the rights set forth in Section 3(c) of those certain Irvine Sensors Corporation Series 1 and Series 2 Senior Subordinated Secured Convertible Notes due December 30, 2009 dated as of December 30, 2005 assigned by Pequot Private Equity
Fund III, L.P. and Pequot Offshore Private Equity Partners III, L.P. to the Lender and Alpha (the “Subordinated Debt Notes”) with respect to the Note and, if and when issued, the issuance of the Continuation Shares and the Class B
Warrants (and the Common Stock issuable upon exercise thereof); and (iii) waives the rights set forth in Section 10(d) of the Subordinated Debt Notes and the rights set forth in Section 3.4 of the Class A Warrants dated
December 29, 2006 (the “Class A Warrants”) with respect to the issuance of the Continuation Shares, the Class B Warrants and Class B Warrant Shares, if and when issued. 
  

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 (l) Survival. The foregoing representations and warranties shall survive the Closing Date for a
period of three years. 
 4. Borrower Representations and Warranties. Except as set forth in a disclosure schedule delivered to Lender
on the date hereof (the “Schedules”), the Borrower represents and warrants to and agrees with Lender that: 
 (a) Due
Incorporation. The Borrower is a corporation duly organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation and has the requisite corporate power to own its properties and to carry on its business
as disclosed in the Reports. The Borrower is duly qualified as a foreign corporation to do business and is in good standing in each jurisdiction where the nature of the business conducted or property owned by it makes such qualification necessary,
other than those jurisdictions in which the failure to so qualify would not have a Material Adverse Effect. For purpose of this Agreement, a “Material Adverse Effect” shall mean a material adverse effect on the financial condition,
results of operations, properties or business of the Borrower taken individually, or in the aggregate, as a whole. For purposes of this Agreement, “Subsidiary” means, with respect to any entity at any date, any corporation, limited
or general partnership, limited liability company, trust, estate, association, joint venture or other business entity) of which more than 30% of (i) the outstanding capital stock having (in the absence of contingencies) ordinary voting
power to elect a majority of the board of directors or other managing body of such entity, (ii) in the case of a partnership or limited liability company, the interest in the capital or profits of such partnership or limited liability company
or (iii) in the case of a trust, estate, association, joint venture or other entity, the beneficial interest in such trust, estate, association or other entity business is, at the time of determination, owned or controlled directly or
indirectly through one or more intermediaries, by such entity. All the Borrower’s Subsidiaries as of the Closing Date are set forth on Schedule 4(a). 
 (b) Outstanding Stock. All issued and outstanding shares of capital stock of the Borrower and each Subsidiary have been duly authorized and validly issued and are fully paid and nonassessable. 
 (c) Authority; Enforceability. This Agreement, the Warrants, and any other agreements delivered together with this Agreement or in connection
herewith, or in connection with the agreements set forth in Section 1(b) of this Agreement to which the Borrower is a party (collectively “Transaction Documents”) have been duly authorized, executed and delivered by the
Borrower and are valid and binding agreements enforceable against the Borrower in accordance with their terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors’ rights generally and to general principles of equity. The Borrower and Subsidiaries have full corporate power and authority necessary to enter into and deliver the Transaction Documents and to perform their obligations
thereunder. 
 (d) Additional Issuances. There are no outstanding agreements or preemptive or similar rights affecting the
Borrower’s Common Stock or equity and no outstanding rights, warrants or options to acquire, or instruments convertible into or exchangeable for, or agreements or understandings with respect to the sale or issuance of any shares of Common Stock
or equity of the Borrower or Subsidiaries or other equity interest in any of the Subsidiaries of the Borrower except as described on Schedule 4(d). The Common Stock of the Borrower on a fully diluted basis outstanding as of the last Business
Day preceding the Closing Date is set forth on Schedule 4(d). 
  

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 (e) Consents. Except as set forth on Schedule 4(e), no consent, approval, authorization or
order of any court, governmental agency or body or arbitrator having jurisdiction over the Borrower or any of its Affiliates, the Nasdaq Capital Market (“NCM”), nor the Borrower’s shareholders is required for the execution by
the Borrower of the Transaction Documents and compliance and performance by the Borrower of its obligations under the Transaction Documents, including, without limitation, the issuance and sale of the Securities, except the filing by the Borrower of
a Notice of Sale of Securities on Form D with the Commission under Regulation D of the Securities Act and applicable Blue Sky filings. The Transaction Documents and the Borrower’s performance of its obligations thereunder have been approved
unanimously by the Borrower’s directors. 
 (f) No Violation or Conflict. Except as set forth on Schedule 4(f), neither
the sale and issuance of the Securities nor the performance of the Borrower’s obligations under this Agreement and all other agreements entered into by the Borrower relating thereto by the Borrower will: 
 (i) violate, conflict with, result in a breach of, or constitute a default (or an event which with the giving of notice or the lapse of time or both
would be reasonably likely to constitute a default) under (A) the articles or certificate of incorporation, charter or bylaws of the Borrower, (B) to the Borrower’s knowledge, any decree, judgment, order, law, treaty, rule, regulation
or determination applicable to the Borrower of any court, governmental agency or body, or arbitrator having jurisdiction over the Borrower or any of its Subsidiaries or over the properties or assets of the Borrower or any of its Subsidiaries,
(C) the terms of any bond, debenture, note or any other evidence of indebtedness, or any agreement, stock option or other similar plan, indenture, lease, mortgage, deed of trust or other instrument to which the Borrower or any of its
Subsidiaries is a party, by which the Borrower or any of its Subsidiaries is bound, or to which any of the properties of the Borrower or any of its Subsidiaries is subject, or (D) the terms of any “lock-up” or similar provision of any
underwriting or similar agreement to which the Borrower, or any of its Subsidiaries is a party except the violation, conflict, breach, or default of which would not have a Material Adverse Effect on the Borrower; or 
 (ii) result in the creation or imposition of any lien, charge or encumbrance upon the Securities or any of the assets of the Borrower or any of its
Subsidiaries; or 
 (iii) result in the activation of any anti-dilution rights or a reset or repricing of any debt or security instrument of
any other creditor or equity holder of the Borrower, nor result in the acceleration of the due date of any obligation of the Borrower; or 
 (iv) result in the activation of any piggy-back or other registration rights of any person or entity holding securities of the Borrower or having the right to receive securities of the Borrower. 
 (g) The Securities. If and when issued, the Securities upon issuance: 
 (i) are, or will be, free and clear of any security interests, liens, claims or other encumbrances, subject to restrictions upon transfer under the 1933
Act and any applicable state securities laws; 
 (ii) have been, or will be, duly and validly authorized and on the date of issuance of the
Continuation Shares, exercise of the Warrants and issuance of the Warrant Shares against payment therefor will be duly and validly issued, fully paid and nonassessable and the Warrant Shares, if registered for resale pursuant to the 1933 Act and
resold pursuant to an effective registration statement under the 1933 Act, will be free trading and unrestricted; 
  

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 (iii) will not have been issued or sold in violation of any preemptive or other similar rights of the
holders of any securities of the Borrower; 
 (iv) will not subject the holders thereof to personal liability by reason of being such
holders; and 
 (v) will have been issued in reliance upon an exemption from the registration requirements of and will not result in a
violation of Section 5 under the 1933 Act. 
 (h) Reporting Company. The Borrower is a publicly-held company subject to
reporting obligations pursuant to Section 13 of the Securities Exchange Act of 1934, as amended (the “1934 Act”) and has a class of common shares registered pursuant to Section 12(g) of the 1934 Act. Except for the Form
10-K for the fiscal year ended October 1, 2006, the Borrower has timely filed all reports and other materials required to be filed thereunder with the Commission during the preceding twelve months pursuant to the provisions of the 1934 Act.

 (i) Information Concerning Borrower. The Reports contain all material information relating to the Borrower and its operations and
financial condition as of their respective dates which information is required to be disclosed therein. Since the date of the latest financial statements included in the Reports, and except as modified in the Other Written Information or in the
Schedules, there has been no material adverse change in the Borrower’s business, financial condition or affairs not disclosed in the Reports (it being understood that by signing this Agreement, the Lender shall be deemed to have agreed in
writing to receiving such Other Written Information and Schedules). As of their respective dates, the Reports did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make
the statements therein not misleading in light of the circumstances when made. The Other Written Information does not constitute material non-public information. 
 (j) No Market Manipulation. The Borrower will not take, directly or indirectly, any action designed to, or that might reasonably be expected to, cause or result in stabilization or manipulation of the price of
the Common Stock of the Borrower to facilitate the sale or resale of the Securities or affect the price at which the Securities may be issued or resold. 
 (k) Listing. The Borrower’s Common Stock is listed on the NCM under the symbol IRSN. Except for a notice received during January 2007, which has been satisfactorily resolved, the Borrower has not received
any oral or written notice that the Common Stock is not eligible nor will become ineligible for listing on the NCM nor that the Common Stock does not meet all requirements for the continuation of such listing. As of the date of this Agreement and
the Closing Date, the Borrower satisfies all the requirements for the continued listing and trading of the Common Stock on the NCM. 
 (l)
Stop Transfer. The Securities, when issued, will be restricted securities. The Borrower will not issue any stop transfer order or other order impeding the sale, resale or delivery of any of the Securities, except as may be required in order
to facilitate compliance with applicable federal or state securities laws and unless contemporaneous notice of such instruction is given to the Lender. 
 (m) Not an Integrated Offering. Neither the Borrower, nor any of its Affiliates, nor to its knowledge, any person acting on its or their behalf, has directly or indirectly made any offers or sales of any
security or solicited any offers to buy any security under circumstances that would cause the offer of the Securities pursuant to this Agreement to be integrated with prior offerings by the Borrower for purposes of the 1933 Act or any applicable
stockholder approval provisions, including, without limitation, under the rules and regulations of the NCM which would impair the exemptions relied 

  

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upon in the offer and issuance of the Note and Securities, if and when offered and issued (“Offering”), the Borrower’s ability to
timely comply with its obligations hereunder, or the continued listing of the Common Stock on the NCM. Nor will the Borrower or any of its Affiliates take any action or steps that would cause the Offering to be integrated with other offerings which
integration would impair the exemptions relied upon in the Offering or the Borrower’s ability to timely comply with its obligations hereunder, or under the rules and regulations of the NCM, or impair the continued listing of the Common Stock on
the NCM. The Borrower will not conduct any offering that will be integrated with the Offering, which integration would impair the exemptions relied upon in the Offering or the Borrower’s ability to timely comply with its obligations hereunder
or under the rules and regulations of the NCM, or impair the continued listing of the Common Stock on the NCM. 
 (n) No General
Solicitation. Neither the Borrower, nor any of its Affiliates, nor to its knowledge, any person acting on its or their behalf, has engaged or will engage in any form of general solicitation or general advertising (within the meaning of
Regulation D under the 1933 Act) in connection with the Offering. 
 (o) Dilution. The Borrower’s executive officers and
directors understand the nature of the Securities issuable hereunder and recognize that the issuance of the Securities, if and when issued, will have a potential dilutive effect on the equity holdings of other holders of the Borrower’s equity
or rights to receive equity of the Borrower. The board of directors of the Borrower has unanimously concluded, in its good faith business judgment, that the issuance of the Securities, if and when issued, is in the best interests of the Borrower.
The Borrower specifically acknowledges that if and when an obligation arises to issue the Continuation Shares, Warrants and Warrant Shares upon exercise of the Warrants, such obligation will be binding upon the Borrower and enforceable regardless of
the dilution such issuance may have on the ownership interests of other shareholders of the Borrower or parties entitled to receive equity of the Borrower. 
 (p) No Disputes with Accountants and Lawyers. There are no disputes of any kind presently existing, or reasonably anticipated by the Borrower to arise, between the Borrower and the accountants and lawyers
formerly or presently employed by the Borrower, including but not limited to disputes or conflicts over payment owed to such accountants and lawyers. Schedule 4(p) describes the status of the Borrower’s relationship with its accountants.

 (q) Incorporation by Reference. Except as modified on Schedule 4(q), the Borrower hereby represents and warrants for itself
and each Subsidiary that all of the representations made by Borrower in Section 4 of a certain Term Loan and Security Agreement between Lender and Alpha Capital Anstalt as Lenders and the Borrower, dated as of December 29, 2006, are true
and correct in all material respects as of the date of this Agreement and will be true and correct in all material respects as of the Closing Date, subject to such qualifications and exceptions set forth therein or in the Schedules delivered by
Borrower therewith. 
 (r) Subsidiary Representations. The Borrower makes each of the representations contained in Sections 4(a),
(b), (c), (d), (e), (f), (p) and (q) of this Agreement, as same relate to each Subsidiary of the Borrower, with the same qualifications to each such representation. 
 (s) DTC Status/Transfer Agent. The Borrower’s transfer agent is eligible to participate in and the Common Stock is eligible for transfer
through DWAC pursuant to the Depository Trust Company Automated Securities Transfer Programs, subject to any restrictions imposed by securities laws. The name, address, telephone number, fax number, contact person and email address of the Borrower
transfer agent are set forth on Schedule 4(s). 
  

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 (t) Correctness of Representations. The Borrower represents that the foregoing representations
and warranties are true and correct as of the date hereof in all material respects, and, unless the Borrower otherwise notifies Lender prior to the Closing Date and Delivery Date, shall be true and correct in all material respects as of the Closing
Date and Delivery Date, respectively. The Borrower will deliver to Lender on the Delivery Date, the Schedules described herein, updated and amended to be accurate in all material respects as of August 15, 2007 and the last Business Day
preceding the Delivery Date. 
 (u) Survival. The foregoing representations and warranties shall survive the Closing Date for a
period of three years. 
 5. Regulation D Offering; Legal Opinion. The offer and issuance of the Securities to Lender will be made
pursuant to the exemption from the registration provisions of the 1933 Act afforded by Section 4(2) of the 1933 Act and/or Rule 506 of Regulation D promulgated thereunder. Provided that the representations and warranties of Lender contained
herein are true and accurate on the Delivery Date and that no facts have changed since the Closing Date, the Borrower will provide an opinion to Lender on the Delivery Date from the Borrower’s legal counsel opining on the availability of an
exemption from registration under the 1933 Act as it relates to the Offering set forth in the form of legal opinion set forth in an exhibit delivered to Lender on the date hereof. The Borrower will provide an opinion to Lender on the Closing Date
from the Borrower’s legal counsel opining on certain other matters set forth in the form of legal opinion set forth in an exhibit delivered to Lender on the date hereof. The Borrower will provide its transfer agent, at the Borrower’s
expense, such other legal opinions in the future as are reasonably necessary for the issuance and resale of the Warrants, Warrant Shares and Continuation Shares. 
 6. Covenants of the Borrower. The Borrower covenants and agrees with the Lender as follows: 
 (a)
Stop Orders. The Borrower will advise the Lender, within four hours after the Borrower or its attorneys receive actual notice of issuance by the Commission, the Principal Market (as defined in Section 6(b)) or any other trading or
listing market, any state securities commission or any other regulatory authority of any stop order or of any order preventing or suspending any offering of any Securities, or of the suspension of the qualification of the Securities for offering or
sale in any jurisdiction, or the initiation of any proceeding for any such purpose. 
 (b) Listing. From the date of this Agreement
and until the sooner of (i) three (3) years after the Delivery Date, or (ii) until all the Warrant Shares and Continuation Shares have been resold or transferred by Lender pursuant to a registration statement or pursuant to Rule 144,
without regard to volume limitations (“End Date”), the Borrower will maintain the listing or quotation of its Common Stock on the American Stock Exchange, NCM, Nasdaq Global Market, Nasdaq Global Select Market, or New York Stock
Exchange (whichever of the foregoing is at the time the principal trading exchange or market for the Common Stock (the “Principal Market”)), and will comply in all respects with the Borrower’s reporting, filing and other
obligations under the bylaws or rules of the Principal Market, as applicable. The Borrower will provide Lender copies of all notices it receives notifying the Borrower of the threatened and actual delisting of the Common Stock from any Principal
Market. As of the date of this Agreement, the NCM is the Principal Market. 
 (c) Market Regulations. The Borrower shall notify the
Commission, Principal Market and applicable state authorities, in accordance with their requirements, of the transactions contemplated by this Agreement, and shall take all other necessary action and proceedings as may be required and permitted by
applicable law, rule and regulation, for the legal and valid issuance of the Securities to Lender and promptly provide copies thereof to Lender. 
  

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 (d) Filing Requirements. From the date of this Agreement until the End Date, the Borrower will
(A) cause its Common Stock to continue to be registered under Section 12(b) or 12(g) of the 1934 Act, (B) comply in all respects with its reporting and filing obligations under the 1934 Act, (C) voluntarily comply with all
reporting requirements that are applicable to an issuer with a class of shares registered pursuant to Section 12(g) of the 1934 Act, if Borrower is not subject to such reporting requirements, and (D) comply with all requirements related to
any registration statement filed in connection with any of the Securities. The Borrower will use its best efforts not to take any action or file any document (whether or not permitted by the 1933 Act or the 1934 Act or the rules thereunder) to
terminate or suspend such registration or to terminate or suspend its reporting and filing obligations under said acts until three (3) years after the Closing Date. From the date of this Agreement until the End Date, the Borrower will use its
best efforts to continue the listing or quotation of the Common Stock on a Principal Market and will comply in all respects with the Borrower’s reporting, filing and other obligations under the bylaws or rules of the Principal Market. The
Borrower agrees to timely file a Form D with respect to the Securities if required under Regulation D and to provide a copy thereof to Lender promptly after such filing. 
 (e) Reservation. Prior to the Closing Date, the Borrower undertakes to reserve, pro rata, on behalf of Lender, from its authorized but unissued Common Stock, a number of common shares equal to the
Continuation Shares and 115% of the amount of Warrant Shares issuable upon exercise of the Class B Warrants. For so long as the Securities are issued or are issuable, failure to have sufficient shares reserved pursuant to this Section 6(e) for
three (3) consecutive business days or ten (10) days in the aggregate shall be a material default of the Borrower’s obligations under this Agreement. 
 (f) Confidentiality/Public Announcement. From the date of this Agreement and until the End Date, the Borrower agrees that except in connection with a Form 8-K and any registration statement or statements
regarding the Securities, or in any other correspondence or filings with the Commission or the Principal Market, it will not disclose publicly or privately the identity of Lender unless expressly agreed to in writing by Lender or only to the extent
required by law and then only upon three business days prior notice to Lender. In any event and subject to the foregoing, the Borrower undertakes to file a Form 8-K or make a public announcement describing the Offering not later than the fourth
business day after the Closing Date and to file a Form 8-K or make a public announcement not later than four business days after exercise of the Prepayment Option or, in the event the Prepayment Option is not exercised by August 15, 2007, not
later than August 21, 2007 disclosing the non-exercise by the Borrower of the Prepayment option and the particular terms thereof. Prior to filing or announcement, such Forms 8-K or public announcements will be provided to Lender for its review
and approval not later than three business days prior to such filing. In the Forms 8-K or public announcements, the Borrower will specifically disclose the amount of Common Stock outstanding immediately prior to the filing of the Form 8-K or public
announcement. Except for notice or information relating to the Offering, upon delivery by the Borrower to Lender after the Closing Date of any notice or information, in writing, electronically or otherwise, and while a Note, Continuation
Shares, Warrants, or Warrant Shares are held by Lender, unless the Borrower has in good faith determined that the matters relating to such notice do not constitute material, nonpublic information relating to the Borrower or
Subsidiaries, or unless the Borrower has complied with Section 6(h) hereof, or unless otherwise agreed to in writing by the Lender, the Borrower shall within one business day after any such delivery publicly disclose
such material, nonpublic information on a Report on Form 8-K or otherwise. In the event that the Borrower believes that a notice or communication to Lender contains material,
nonpublic information, relating to the Borrower or Subsidiaries, the Borrower shall so indicate to the Lender 

  

 10 

 
contemporaneously with delivery of such notice or information. In the absence of any such indication, the Lender shall be allowed to presume that all
matters relating to such notice and information do not constitute material, nonpublic information relating to the Borrower or Subsidiaries. 
 (h) Non-Public Information. The Borrower covenants and agrees that neither it nor any other person acting on its behalf has provided nor will provide Lender or its agents or counsel with any information that
the Borrower believes constitutes material non-public information, unless prior thereto such Lender or its agents or counsel shall have agreed in writing to receive such information. The Borrower understands and confirms that Lender shall be relying
on the foregoing representations in effecting transactions in securities of the Borrower. 
 (i) Special Waiver. The Borrower
covenants not to exercise its right arising under any agreement to which the Borrower and Lender are parties, to pay any interest, damages or liquidated damages with the delivery of Common Stock, until such time as such “payment in kind”
will not cause or result in a violation of the rules and regulations of the Principal Market, including but not limited to those rules limiting the amount of Common Stock that may be issued without filing a pre-approval application with the
Principal Market or without obtaining approval of the shareholders of the Borrower. 
 (j) Offering Restrictions. For so long as the
Subordinated Debt Notes remain outstanding and held by the Lender, except for Excepted Issuances (which shall have the same meaning as given such term in the Class A Warrant other than clause (xi) of such term unless the proceeds of such
underwritten public offering will fully retire the debt obligations Borrower owes to Lender) and except for Excluded Stock (which shall have the same meaning as given such term in the Subordinated Debt Notes other than clause (B) of such term),
the Company will not, without the prior written consent of the Lender, enter into an agreement to issue any individual equity security, convertible debt security or other individual security convertible into Common Stock or equity of the Company at
a price that would trigger the anti-dilution provisions set forth in Section 10(d) of the Subordinated Debt Notes; provided however, that no consent of the Lender shall be required for the issuance of any convertible security that has an
exercise price or conversion price above the Conversion Price set forth in Section 10(d) of the Subordinated Debt Notes). 
 7.
Broker. The Borrower on the one hand, and Lender on the other hand, agrees to indemnify the other against and hold the other harmless from any and all liabilities to any persons claiming brokerage commissions or finder’s fees or similar
payments on account of services purported to have been rendered on behalf of the indemnifying party in connection with this Agreement or the transactions contemplated hereby and arising out of such party’s actions. The Borrower represents that
there are no parties entitled to receive fees, commissions, or similar payments in connection with the Offering. 
 8. Legal Fees. On
the Closing Date, the Borrower shall pay to Grushko & Mittman, P.C., a fee of $40,000 (“Legal Fees”) as reimbursement for services rendered to Lender in connection with this Agreement and the issuance of the Note. The Legal
Fees and reimbursement for estimated UCC search and filing fees and credit reports, if any, will be payable on the Closing Date. 
 9.
Covenants of the Borrower and Lender Regarding Indemnification. 
 (a) The Borrower agrees to indemnify, hold harmless, reimburse and
defend the Lender, the Lender’s officers, directors, agents, Affiliates, attorneys, control persons, and principal shareholders, against any claim, cost, expense, liability, obligation, loss or damage (including reasonable legal fees) of any
nature, incurred by or imposed upon the Lender or any such person which results, arises 

  

 11 

 
out of or is based upon (i) any material misrepresentation by Borrower or breach of any warranty by Borrower in this Agreement or in any Exhibits or
Schedules, or other agreement delivered pursuant hereto; or (ii) after any applicable notice and/or cure periods, any breach or default in performance by the Borrower of any covenant or undertaking to be performed by the Borrower hereunder, or
any other agreement entered into by the Borrower and Lender relating hereto. 
 (b) Lender agrees to indemnify, hold harmless, reimburse and
defend the Borrower and each of the Borrower’s officers, directors, agents, Affiliates, attorneys, control persons against any claim, cost, expense, liability, obligation, loss or damage (including reasonable legal fees) of any nature, incurred
by or imposed upon the Borrower or any such person which results, arises out of or is based upon (i) any material misrepresentation by such Lender in this Agreement or in any Exhibits or Schedules, or other agreement delivered pursuant hereto;
or (ii) after any applicable notice and/or cure periods, any breach or default in performance by Lender of any covenant or undertaking to be performed by Lender hereunder, or any other agreement entered into by the Borrower and Lender, relating
hereto. 
 (c) In no event shall the liability of Lender or permitted successor hereunder or under any other agreement delivered in
connection herewith be greater in amount than the amount of the Advance that is actually repaid to Lender by Borrower. 
 (d) The procedures
set forth in Section 5 of a certain Registration Rights Agreement dated as of December 29, 2006, to which Borrower and Lender are parties shall apply to the indemnification set forth in Sections 9(a) and 9(b) above. 
 10. Miscellaneous. 
 (a) Notices. All notices, demands, requests, consents, approvals, and other communications
required or permitted hereunder shall be in writing and, unless otherwise specified herein, shall be (i) personally served, (ii) deposited in the mail, registered or certified, return receipt requested, postage prepaid,
(iii) delivered by reputable overnight courier service with charges prepaid, or (iv) transmitted by hand delivery, electronic mail, or facsimile, addressed as set forth below or to such other address as such party shall have specified most
recently by written notice. Any notice or other communication required or permitted to be given hereunder shall be deemed effective (a) upon hand delivery or delivery by electronic mail or facsimile, with accurate confirmation generated by the
transmitting facsimile machine, at the address or number designated below (if delivered on a business day during normal business hours where such notice is to be received), or the first business day following such delivery (if delivered other than
on a business day during normal business hours where such notice is to be received) or (b) on the second business day following the date of mailing by express courier service, fully prepaid, addressed to such address, or upon actual receipt of
such mailing, whichever shall first occur. The addresses for such communications shall be: (i) if to the Borrower, to: Irvine Sensors Corporation, 3001 Red Hill Avenue, Costa Mesa, CA 92650, Attn: Chief Financial Officer, telecopier:
(714) 444-8773, with a copy by telecopier only to: Dorsey & Whitney LLP, 38 Technology Drive, Irvine, CA 92618, Attn: Ellen S. Bancroft, Esq., telecopier: (949) 932-3601, and (ii) if to the Lender, to: Longview Fund, L.P.,
600 Montgomery Street, 44th Floor, San Francisco, CA 94111, Attn: S. Michael Rudolph, telecopier:
(415) 981-5301, with an additional copy by telecopier only to: Grushko & Mittman, P.C., 551 Fifth Avenue, Suite 1601, New York, New York 10176, telecopier: (212) 697-3575. 
 (b) Entire Agreement; Assignment. This Agreement and other documents delivered in connection herewith represent the entire agreement between the
parties hereto with respect to the subject matter hereof and may be amended only by a writing executed by both parties. Except as set forth or referred to herein, all other agreements to which the Borrower, Lender, Subsidiaries, and Affiliates

  

 12 

 
are parties remain in full force and effect and unmodified. Neither the Borrower nor Lender has relied on any representations not contained or referred to in
this Agreement and the documents delivered herewith. No right or obligation of the Borrower shall be assigned without prior notice to and the written consent of Lender. 
 (c) Counterparts/Execution. This Agreement may be executed in any number of counterparts and by the different signatories hereto on separate counterparts, each of which, when so executed, shall be deemed an
original, but all such counterparts shall constitute but one and the same instrument. This Agreement may be executed by facsimile signature and delivered by facsimile transmission. 
 (d) Law Governing this Agreement. This Agreement shall be governed by and construed in accordance with the laws of the State of New York without
regard to principles of conflicts of laws. Any action brought by either party against the other concerning the transactions contemplated by this Agreement shall be brought only in the state courts of New York or in the federal courts located in the
State of New York. The parties and the individuals executing this Agreement and other agreements referred to herein or delivered in connection herewith on behalf of the Borrower agree to submit to the jurisdiction of such courts and waive trial
by jury. The prevailing party shall be entitled to recover from the other party its reasonable attorney’s fees and costs. In the event that any provision of this Agreement or any other agreement delivered in connection herewith is invalid
or unenforceable under any applicable statute or rule of law, then such provision shall be deemed inoperative to the extent that it may conflict therewith and shall be deemed modified to conform with such statute or rule of law. Any such provision
which may prove invalid or unenforceable under any law shall not affect the validity or enforceability of any other provision of any agreement. 
 (e) Specific Enforcement, Consent to Jurisdiction. The Borrower and Lender acknowledge and agree that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed in accordance with
their specific terms or were otherwise breached. It is accordingly agreed that the parties shall be entitled to an injunction or injunctions to prevent or cure breaches of the provisions of this Agreement and to enforce specifically the terms and
provisions hereof, this being in addition to any other remedy to which any of them may be entitled by law or equity. Subject to Section 10(d) hereof, each of the Borrower, Lender and any signatory hereto in his personal capacity hereby waives,
and agrees not to assert in any such suit, action or proceeding, any claim that it is not personally subject to the jurisdiction in New York of such court, that the suit, action or proceeding is brought in an inconvenient forum or that the venue of
the suit, action or proceeding is improper. Nothing in this Section shall affect or limit any right to serve process in any other manner permitted by law. 
 (f) Calendar Days. All references to “days” in the Transaction Documents shall mean calendar days unless otherwise stated. The terms “business days” and “trading days” shall mean
days that the New York Stock Exchange is open for trading for three or more hours. Time periods shall be determined as if the relevant action, calculation or time period were occurring in New York City. 
 (g) Default and Waiver. The Borrower acknowledges that (i) the failure to obtain the Lender’s and Alpha’s consent to the
Borrower’s issuance on May 16, 2007 of a warrant to purchase up to 200,000 shares of common stock is a technical default under the Subscription Agreement (the “Consent Default”), and (ii) the failure to register shares of
Common Stock issued or issuable to Lender constitutes a technical default under the Subscription Agreement and the Registration Rights Agreement dated December 29, 2006 but shall not be deemed to be to be a cross default for purposes of the
Note. The Lender waives such failures solely for purposes of accelerating or requiring repurchase of the obligations under any agreement or instrument between the Borrower and/or its subsidiaries and the Lender and/or Alpha, triggering default

  

 13 

 
interest under any such agreement or instrument (but only with respect to the Consent Default), exercising remedies with respect to collateral (including
without limitation account collections, settlements, adjustments or compromises, returned inventory, and inspection, audit and appraisal) securing the obligations under any such agreement or instrument, claiming a cross-default under any such
agreement or instrument, tolling any restriction periods in any such agreement or instrument, preventing the payment of interest in shares of Borrower’s common stock under any such agreement or instrument (but only with respect to the Consent
Default), or preventing Borrower’s ability to repurchase stock from former employees or directors of Borrower under any such agreement or instrument. Notwithstanding the foregoing, (i) such waiver of the failure to register the shares of
Common Stock issued or issuable to Lender shall not constitute a waiver of any default interest or liquidated damages that may have accrued or will accrue with respect to such default ; (ii) such waiver shall continue only so long as Tim
Looney, TWL Group, L.P. or their Affiliates do not attempt to accelerate or collect any obligations owed to them by Borrower or Optex Systems, Inc. nor foreclose on any of their security interests in any of the assets of Borrower, Optex Systems,
Inc. or their Subsidiaries; and (iii) subject to the foregoing, Lender hereby agrees to extend the deadline to register any such shares until October 19, 2007. Except as specifically set forth herein or in the Note, no provision of this
Agreement shall be deemed a waiver of any default by the Borrower under any other agreement between the Borrower and/or a Subsidiary and the Lender. 
 (h) Application of Payments. Anything in any Transaction Document to the contrary notwithstanding, Lender, at Lender’s sole discretion and election, may apply any payment received from or on behalf of
Borrower or any Subsidiary to any component or components of any obligation owed by Borrower or a Subsidiary to Lender pursuant to the Transaction Documents or any other source, in any sequence elected by Lender. The foregoing notwithstanding,
payment of the Redemption Amount described in Section 3 of the Note shall be applied as described in Section 3 of the Note. 
 [THIS SPACE INTENTIONALLY LEFT BLANK] 
  

 14 

 IN WITNESS WHEREOF, the Borrower and Lender have entered into this Loan Agreement as of
July 19, 2007. 
  

					
	IRVINE SENSORS CORPORATION (“Borrower”) a Delaware corporation
			
		 	 /s/John C. Carson
	 	
		 	(Signature)	 	
	Name:	 	John C. Carson	 	
	Title:	 	President and CEO	 	

  

					
	LONGVIEW FUND, LP (“Lender”)
	 600 Montgomery Street, 44th Floor
 San
Francisco, CA 94111
 Fax: (415) 981-5301

			
		 	 /s/ S. Michael Rudolph
	 	
		 	(Signature)	 	
	Name:	 	S. Michael Rudolph	 	
	Title:	 	CFO Investment Adviser	 	

 [SIGNATURE PAGE TO LONGVIEW
LOAN AGREEMENT] 

 LIST OF EXHIBITS AND SCHEDULES 
  

			
	Exhibit A	  	Form of Note
		
	Exhibit B	  	Form of Class B Warrant
		
	Schedule 4(a)	  	Subsidiaries
		
	Schedule 4(d)	  	Additional Issuances/Capitalization
		
	Schedule 4(e)	  	Consents
		
	Schedule 4(f)	  	No Violation or Conflict
		
	Schedule 4(p)	  	Accountants and Lawyers
		
	Schedule 4(q)	  	Exceptions to Incorporation by Reference
		
	Schedule 4(r)	  	Subsidiary Representations
		
	Schedule 4(s)	  	Transfer AgentSecured Promissory Note

 Exhibit 10.66 
 SECURED PROMISSORY NOTE 
 FOR VALUE RECEIVED, IRVINE SENSORS CORPORATION, a Delaware
corporation (hereinafter called “Borrower”), hereby promises to pay to LONGVIEW FUND, L.P., 600 Montgomery Street, 44th Floor, San Francisco, CA 94111, Fax: (415) 981-5301, (the “Holder”) or order, without demand, the sum of
Two Million Dollars ($2,000,000.00) (“Principal Amount”), with annually compounded and unpaid interest thereon, on January 19, 2008 (the “Maturity Date”), if not sooner paid. 
 This Note has been entered into pursuant to the terms of a loan agreement between the Borrower and the Holder dated of even date herewith (the “Loan
Agreement”), and shall be governed by the terms of such Loan Agreement. Unless otherwise separately defined herein, all capitalized terms used in this Note shall have the same meaning as is set forth in the Loan Agreement. The following terms
shall apply to this Note: 
 ARTICLE I 
 INTEREST; AMORTIZATION 
 1.1. Interest Rate. Subject to Section 5.7 hereof, interest
payable on this Note shall accrue at a rate per annum (the “Interest Rate”) of twelve percent (12%). Interest on the Principal Amount shall accrue from the date of this Note and shall be payable, in arrears, together with Principal as
described below and on the Maturity Date when the entire unpaid Principal Amount and accrued interest shall be due and payable, whether by acceleration or otherwise. 
 1.2. Principal and Interest Payment. Payments made hereunder shall be made in cash and at the Holder’s discretion, shall be applied first against outstanding fees and damages, then against accrued interest
on the Principal Amount and then to Principal Amount. Any Principal Amount, interest and any other sum arising under any Transaction Document that remains outstanding on the Maturity Date shall be due and payable on the Maturity Date, accelerated or
otherwise. 
 1.3. Default Rate. Without limitation on Holder’s other rights and remedies, upon the earliest to occur of an Event
of Default (as provided in Article II), or the Maturity Date, accelerated or otherwise, the unpaid principal of all amounts due under this Note shall bear interest at a rate per annum equal to eighteen percent (18%) (the “Default
Rate”). 
 1.4. Late Charges. If the entire amount of any required principal, interest or other payment hereunder is not paid in
full within ten (10) days after the same is due, Borrower shall pay to the Holder a late fee equal to five percent (5%) of the required payment. 
 1.5. Miscellaneous. Interest on this Note shall be calculated on the basis of a 360-day year and the actual number of days elapsed. Principal and interest on this Note and other payments in connection with this
Note shall be payable at the Lender’s offices as designated above in lawful money of the United States of America in immediately available funds without set-off, deduction or counterclaim. Upon assignment of the interest of Holder in this Note,
Borrower shall instead make its payment pursuant to the assignee’s instructions upon receipt of written notice thereof. 
  

 1 

 ARTICLE II 
 EVENT OF DEFAULT 
 The occurrence of any of the following events of default (“Event of
Default”) shall, at the option of the Holder hereof, make all sums of principal and interest then remaining unpaid hereon and all other amounts payable hereunder immediately due and payable, upon demand, without presentment, or grace period,
all of which hereby are expressly waived, except as set forth below: 
 2.1 Failure to Pay Principal or Interest. The Borrower fails to
pay any installment of principal, interest or other sum due under this Note or the Loan Agreement when due. 
 2.2 Breach of Covenant.
The Borrower breaches any material covenant or other term or condition of the Loan Agreement entered into in connection with this Note or this Note in any material respect and such breach, if subject to cure, continues for a period of ten
(10) business days after written notice to the Borrower from the Holder or is otherwise made aware of such breach. 
 2.3 Breach of
Representations and Warranties. Any material representation or warranty of the Borrower made herein or in the Loan Agreement or any statement or certificate given in writing pursuant to any Transaction Document or in connection with any
Transaction Document shall be false or misleading in any material respect as of the date made, or shall failure to state any fact,, the omission of which makes the representation or warranty materially misleading. 
 2.4 Receiver or Trustee. The Borrower shall make an assignment for the benefit of creditors, or apply for or consent to the appointment of a
receiver or trustee for Borrower for a substantial part of Borrower’s property or business; or such receiver or trustee shall be involuntarily appointed. 
 2.5 Judgments. Any money judgment, writ or similar final process shall be entered or filed against Borrower or any of Borrower’s property or other assets for more than $100,000, and shall remain unpaid,
unvacated, unbonded or unstayed for a period of sixty (60) days. 
 2.6 Bankruptcy. Bankruptcy, insolvency, reorganization or
liquidation proceedings or other proceedings or relief under any bankruptcy law or any law, or the issuance of any notice in relation to such event, for the relief of debtors shall be instituted by or against the Borrower. 
 2.7 Non-Payment. Except with respect to payments owed to Pequot or payments for professional fees, a default by the Borrower under any one or more
obligations in an aggregate monetary amount in excess of $1,000,000 for more than thirty days after the due date, unless the Borrower is contesting the validity of such obligation in good faith and has segregated cash funds equal to not less than
one-half of the disputed amount. 
 2.8 Cross Default. Except as set forth on Schedule 4(q) delivered to Holder in connection with the
Loan Agreement, a default by the Borrower to the Holder and/or Alpha Capital Anstalt of a material term, covenant, warranty or undertaking of any other agreement between the Borrower and/or a Subsidiary and the Holder, or the occurrence of a
material event of default under any such other agreement which is not cured after any required notice and/or cure period, or except as set forth on Schedule 4(q) delivered to Holder in connection with the Loan Agreement, the occurrence of any event
of default (subject to any applicable grace period) as defined in any other instrument evidencing or governing indebtedness for borrowed money in excess of, in the aggregate, $100,000, of Borrower now or hereafter outstanding; or any event or
condition which gives any holder or trustee of such indebtedness for borrowed money the right to accelerate its maturity. (No provision of this Note shall be deemed a waiver of any default by Borrower under any other agreement between the Borrower
and/or a Subsidiary and the Holder). 
  

 2 

 2.9 Payment of Subordinated Debt. While this Note remains outstanding, Borrower shall make any
payment on any indebtedness, which by its terms is subordinate hereto, except for indebtedness with Longview and/or Alpha Capital Anstalt. 
 2.10 Non-Timely Delivery. Borrower’s non-timely delivery of the Class B Warrants or Continuation Shares. 
 ARTICLE
III 
 OPTIONAL REDEMPTION 
 3. Optional Redemption of Principal Amount. Borrower has the option of prepaying all of the outstanding Principal Amount of this Note (“Optional Redemption”) by paying to the Holder a sum of money equal to one hundred and
twenty percent (120%) of such Principal Amount to be redeemed together with accrued but unpaid interest thereon and any and all other sums due, accrued or payable to the Holder arising under this Note or any Transaction Document through the
Redemption Payment Date as defined below (the “Redemption Amount”). Borrower’s election to exercise its right to prepay must be by notice in writing given not later than August 8, 2007 (“Notice of Redemption”). The
Notice of Redemption shall specify the date for such Optional Redemption (the “Redemption Payment Date”), which date shall be not later than August 15, 2007. The Notice of Redemption shall also state the Redemption Amount and details
and calculations supporting such amount. In the event the Borrower fails to pay the Redemption Amount on the Redemption Payment Date as set forth herein, then (i) such Notice of Redemption will be null and void, (ii) Borrower will not have
the right to deliver another Notice of Redemption, and (iii) Borrower’s failure may be deemed by Holder to be a non-curable Event of Default. A Notice of Redemption may be cancelled at the option of the Holder, if at any time during the
Redemption Period an Event of Default, or an event which with the passage of time or giving of notice could become an Event of Default (whether or not such Event of Default has been cured), has occurred. In the event an Optional Redemption does not
occur then Borrower must deliver to Holder the Class B Warrants and the Continuation Shares (which Continuation Shares shall be in lieu of a $400,000 continuation fee for continuing the term of this Note beyond August 15, 2007); and the
Principal Amount of this Note shall automatically and without further action be increased by $100,000 as of August 15, 2007. Borrower shall acknowledge such increase in a written notice to be delivered to Holder not later than August 15,
2007. 
 ARTICLE IV 
 SECURITY INTEREST 
 4. Security Interest/Waiver of Automatic Stay. This Note is secured by a security interest
granted to the Holder pursuant to an Omnibus Security Interest Acknowledgement and other agreements referred to therein, as delivered by Borrower to Holder. The Borrower acknowledges and agrees that should a proceeding under any bankruptcy or
insolvency law be commenced by or against the Borrower, or if any of the Collateral (as defined in the an Omnibus Security Interest Acknowledgement and other agreements referred to therein) should become the subject of any bankruptcy or insolvency
proceeding, then the Holder should be entitled to, among other relief to which the Holder may be entitled under this Note, the an Omnibus Security Interest Acknowledgement and other agreements referred to therein and any other agreement to which the
Borrower and Holder are parties (collectively, “Loan Documents”) and/or applicable law, an order from the court granting immediate relief from the automatic stay pursuant to 11 U.S.C. Section 362 to permit the Holder to exercise all
of its rights and remedies pursuant to the Loan Documents and/or applicable law. THE BORROWER EXPRESSLY WAIVES THE BENEFIT OF 

  

 3 

 
THE AUTOMATIC STAY IMPOSED BY 11 U.S.C. SECTION 362. FURTHERMORE, THE BORROWER EXPRESSLY ACKNOWLEDGES AND AGREES THAT NEITHER 11 U.S.C. SECTION 362 NOR ANY
OTHER SECTION OF THE BANKRUPTCY CODE OR OTHER STATUTE OR RULE (INCLUDING, WITHOUT LIMITATION, 11 U.S.C. SECTION 105) SHALL STAY, INTERDICT, CONDITION, REDUCE OR INHIBIT IN ANY WAY THE ABILITY OF THE HOLDER TO ENFORCE ANY OF ITS RIGHTS AND REMEDIES
UNDER THE LOAN DOCUMENTS AND/OR APPLICABLE LAW. The Borrower hereby consents to any motion for relief from stay that may be filed by the Holder in any bankruptcy or insolvency proceeding initiated by or against the Borrower and, further, agrees not
to file any opposition to any motion for relief from stay filed by the Holder. The Borrower represents, acknowledges and agrees that this provision is a specific and material aspect of the Loan Documents, and that the Holder would not agree to the
terms of the Loan Documents if this waiver were not a part of this Note. The Borrower further represents, acknowledges and agrees that this waiver is knowingly, intelligently and voluntarily made, that neither the Holder nor any person acting on
behalf of the Holder has made any representations to induce this waiver, that the Borrower has been represented (or has had the opportunity to he represented) in the signing of the Loan Documents and in the making of this waiver by independent legal
counsel selected by the Borrower and that the Borrower has discussed this waiver with counsel. 
 ARTICLE V 
 MISCELLANEOUS 
 5.1 Failure or
Indulgence Not Waiver. No failure or delay on the part of Holder hereof in the exercise of any power, right or privilege hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any such power, right or privilege
preclude other or further exercise thereof or of any other right, power or privilege. All rights and remedies existing hereunder are cumulative to, and not exclusive of, any rights or remedies otherwise available. 
 5.2 Notices. All notices, demands, requests, consents, approvals, and other communications
required or permitted hereunder shall be in writing and, unless otherwise specified herein, shall be (i) personally served, (ii) deposited in the mail, registered or certified, return receipt requested, postage prepaid,
(iii) delivered by reputable overnight courier service with charges prepaid, or (iv) transmitted by hand delivery, electronic mail, or facsimile, addressed as set forth below or to such other address as such party shall have specified most
recently by written notice. Any notice or other communication required or permitted to be given hereunder shall be deemed effective (a) upon hand delivery or delivery by electronic mail or facsimile, with accurate confirmation generated by the
transmitting facsimile machine, at the address or number designated below (if delivered on a business day during normal business hours where such notice is to be received), or the first business day following such delivery (if delivered other than
on a business day during normal business hours where such notice is to be received) or (b) on the second business day following the date of mailing by express courier service, fully prepaid, addressed to such address, or upon actual receipt of
such mailing, whichever shall first occur. The addresses for such communications shall be: (i) if to the Borrower, to: Irvine Sensors Corporation, 3001 Red Hill Avenue, Costa Mesa, CA 92650, Attn: Chief Financial Officer, telecopier:
(714) 444-8773, with a copy by telecopier only to: Dorsey & Whitney LLP, 38 Technology Drive, Irvine, CA 92618, Attn: Ellen S. Bancroft, Esq., telecopier: (949) 932-3601, and (ii) if to the Holder, to: Longview Fund, L.P.,
600 Montgomery Street, 44th Floor, San Francisco, CA 94111, Attn: S. Michael Rudolph, telecopier:
(415) 981-5301, with an additional copy by telecopier only to: Grushko & Mittman, P.C., 551 Fifth Avenue, Suite 1601, New York, New York 10176, telecopier: (212) 697-3575. 
  

 4 

 5.3 Amendment Provision. The term “Note” and all reference thereto, as used throughout
this instrument, shall mean this instrument as originally executed, or if later amended or supplemented, then as so amended or supplemented. 
 5.4 Assignability. This Note shall be binding upon the Borrower and its successors and assigns, and shall inure to the benefit of the Holder and its successors and assigns. 
 5.5 Cost of Collection. If default is made in the payment of this Note, Borrower shall pay the Holder hereof reasonable costs of collection,
including reasonable attorneys’ fees. 
 5.6 Governing Law. This Note shall be governed by and construed in accordance with the
laws of the State of New York, without regard to its conflict of laws principles. Any action brought by either party against the other concerning the transactions contemplated by this Agreement shall be brought only in the civil or state courts of
New York or in the federal courts located in the State and county of New York. Both parties and the individual signing this Agreement on behalf of the Borrower agree to submit to the jurisdiction of such courts. The prevailing party shall be
entitled to recover from the other party its reasonable attorney’s fees and costs. In the event that any provision of this Note is invalid or unenforceable under any applicable statute or rule of law, then such provision shall be deemed
inoperative to the extent that it may conflict therewith and shall be deemed modified to conform with such statute or rule of law. Any such provision which may prove invalid or unenforceable under any law shall not affect the validity or
unenforceability of any other provision of this Note. Nothing contained herein shall be deemed or operate to preclude the Holder from bringing suit or taking other legal action against the Borrower in any other jurisdiction to collect on the
Borrower’s obligations to Holder, to realize on any collateral or any other security for such obligations, or to enforce a judgment or other decision in favor of the Holder. This Note shall be deemed an unconditional obligation of Borrower
for the payment of money and, without limitation to any other remedies of Holder, may be enforced against Borrower by summary proceeding pursuant to New York Civil Procedure Law and Rules Section 3213 or any similar rule or statute in the
jurisdiction where enforcement is sought. For purposes of such rule or statute, any other document or agreement to which Holder and Borrower are parties or which Borrower delivered to Holder, which may be convenient or necessary to determine
Holder’s rights hereunder or Borrower’s obligations to Holder are deemed a part of this Note, whether or not such other document or agreement was delivered together herewith or was executed apart from this Note. 
 5.7 Limitation on Interest. All agreements between Borrower and Holder are hereby expressly limited so that in no contingency or event whatsoever,
whether by reason of acceleration of maturity of the indebtedness evidenced hereby or otherwise, shall the amount paid or agreed to be paid to lender for the use or the forbearance of the indebtedness evidenced hereby exceed the maximum permissible
under applicable law. As used herein, the term “applicable law” shall mean the law in effect as of the date hereof, provided, however that in the event there is a change in the law which results in a higher permissible rate of interest,
then this Agreement shall be governed by such new law as of its effective date. In this regard, it is expressly agreed that it is the intent of Borrower and Holder in the execution, delivery and acceptance of the Note to comply in strict compliance
with the laws of the State of New York and any other applicable state from time to time in effect. If, under or from any circumstances whatsoever, fulfillment of any provision hereof or of any of the Loan Documents at the time of performance of such
provision shall be due, shall involve transcending the limit of such validity prescribed by applicable law, then the obligation to be fulfilled shall automatically be reduced to the limits of such 

  

 5 

 
validity, and if under or from circumstances whatsoever Lender should ever receive as interest an amount which would exceed the then highest lawful rate,
such amount which would be excessive interest shall be applied to the reduction of the principal balance evidenced hereby and not to the payment of interest. This provision shall control every other provision of all agreements between Borrower and
Holder. 
 5.8 Redemption. This Note may not be redeemed or called without the consent of the Holder except as set forth in Article
III of this Note. 
  

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 IN WITNESS WHEREOF, Borrower has caused this Note to be signed in its name by an authorized
officer as of the 19th day of July, 2007. 
  

			
	IRVINE SENSORS CORPORATION
		
	By:	 	 /s/ John C. Carson

  

	
	 WITNESS:

	
	 /s/ Jule Hughes

 [SIGNATURE PAGE TO 
 LONGVIEW $2.0 MIL SECURED PROMISSORY NOTE] 
  

 7

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