LIMITED GUARANTY

Exhibit 10.15

LIMITED GUARANTY

GUARANTY, by NORTHEAST LCD CAPITAL, LLC, a Maine limited liability company (the “Guarantor”), in favor of DANVERSBANK, a Massachusetts savings bank, having a mailing address of One Conant Street, Danvers, Massachusetts 01923 (the “Bank”). In consideration of the Bank’s giving, in its discretion, time, credit or banking facilities or accommodations to LUCID, INC., a New York corporation duly organized by law and having a usual place of business at 2320 Brighton-Henrietta Town Line Road, Rochester, New York (together with its successors, the “Customer”), the Guarantor agrees as follows:

1.          LIMITED GUARANTY OF PAYMENT AND PERFORMANCE. Subject to provision #3, below, the Guarantor hereby guarantees to the Bank the full and punctual payment when due (whether at maturity, by acceleration or otherwise), and the performance, of all liabilities, agreements and other obligations arising from or related to a certain Line of Credit Note in the face amount of $5,000,000.00 and dated July 9, 2010 payable by the Customer to the Bank (the “Obligation(s)”). This Guaranty is an absolute, unconditional and continuing guaranty of the full and punctual payment and performance of the Obligations and not of their collectibility only and is in no way conditioned upon any requirement that the Bank first attempt to collect any of the Obligations from the Customer or resort to any security or other means of obtaining their payment. Should the Customer default in the payment or performance of any of the Obligations, the obligations of the Guarantor hereunder shall become immediately due and payable to the Bank, without demand or notice of any nature, all of which are expressly waived by the Guarantor. Payments by the Guarantor hereunder may be required by the Bank on any number of occasions.

2.          GUARANTOR’S AGREEMENT TO PAY. The Guarantor further agrees, as the principal obligor and not as a guarantor only, to pay to the Bank, on demand, all costs and expenses (including court costs and legal expenses) incurred or expended by the Bank in connection with the Obligations, this Guaranty and the enforcement thereof, together with interest on amounts recoverable under this Guaranty from the time such amounts become due until payment.

3.          LIMITED GUARANTY. The rights of the Bank hereunder are limited to the sums on deposit with the Bank titled to the Guarantor in Account No. 27-411908 with no further recourse available to Bank hereunder against the Guarantor.

4.          WAIVERS BY GUARANTOR; BANK’S FREEDOM TO ACT. The Guarantor agrees that the Obligations will be paid and performed strictly in accordance with their respective terms regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of the Bank with respect thereto. The Guarantor waives presentment, demand, protest, notice of acceptance, notice of Obligations incurred and all other notices of any kind, all defenses which may be available by virtue of any valuation, stay, moratorium law or other similar law now or hereafter in effect, any right to require the marshaling of assets of the Customer, and all suretyship defenses generally. Without limiting the

generality of the foregoing, the Guarantor agrees to the provisions of any instrument evidencing, securing or otherwise executed in connection with the Obligation(s) and agrees that the obligations of the Guarantor hereunder shall not be released or discharged, in whole or in part, or otherwise affected by (i) the failure of the Bank to assert any claim or demand or to enforce any right or remedy against the Customer; (ii) any extensions or renewals of any Obligation; (iii) any rescissions, waivers, amendments or modifications of any of the terms or provisions of any agreement evidencing, securing or otherwise executed in connection with the Obligation(s); (iv) the substitution or release of any entity primarily or secondarily liable for any Obligation; or (v) the adequacy of any rights the Bank may have against any collateral or other means of obtaining repayment of the Obligations; (vi) the impairment of any collateral securing the Obligations, including without limitation the failure to perfect or preserve any rights the Bank might have in such collateral or the substitution, exchange, surrender, release, loss or destruction of any such collateral.

5.          UNENFORCEABILITY OF OBLIGATIONS AGAINST CUSTOMER. If for any reason the Customer has no legal existence or is under no legal obligation to discharge any of the Obligations, or if any of the Obligations have become irrecoverable from the Customer by operation of law or for any other reason, this Guaranty shall nevertheless be binding on the Guarantor to the same extent as if the Guarantor at all times had been the principal obligor on the Obligations. In the event that acceleration of the time for payment of the Obligations is stayed upon the insolvency, bankruptcy or reorganization of the Customer, or for any other reason, all such amounts otherwise subject to acceleration under the terms of any agreement evidencing, securing or otherwise executed in connection with any Obligation shall be immediately due and payable by the Guarantor.

6.          SUBROGATION; SUBORDINATION. Until the payment and performance in full of all Obligations and any and all obligations of the Customer to any affiliate of the Bank, the Guarantor shall not exercise any rights against the Customer arising as a result of payment by the Guarantor hereunder, by way of subrogation or otherwise, and will not prove any claim in competition with the Bank or its affiliates in respect of any payment hereunder in bankruptcy or insolvency proceedings of any nature; the Guarantor will not claim any set-off or counterclaim against the Customer in respect of any liability of the Guarantor to the Customer; and the Guarantor waives any benefit of and any right to participate in any collateral which may be held by the Bank or any such affiliate. The payment of any amounts due with respect to any indebtedness of the Customer now or hereafter held by the Guarantor is hereby subordinated to the prior payment in full of the Obligations, provided that so long as no default in the payment or performance of the Obligations has occurred and is continuing, or no demand for payment of any of the Obligations has been made that remains unsatisfied, the Customer may make, and the Guarantor may demand and accept, any scheduled payments of principal of and interest on such subordinated indebtedness in the amounts, at the rates and on the dates specified in such instruments, securities or other writings as shall evidence such subordinated indebtedness. The Guarantor agrees that after the occurrence of any default in the payment or performance of the Obligations and after demand by Bank of the Customer, the Guarantor will not demand, sue for or otherwise attempt to collect any such indebtedness of the Customer to the Guarantor until the Obligations shall have been paid in full. If, notwithstanding the foregoing sentence, the

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Guarantor shall collect, enforce or receive any amounts in respect of such indebtedness, such amounts shall be collected, enforced and received by the Guarantor as trustee for the Bank and be paid over to the Bank on account of the Obligations without affecting in any manner the liability of the Guarantor under the other provisions of this Guaranty.

7.          SECURITY; SET-OFF. The Guarantor grants to the Bank, as security for the full and punctual payment and performance of the Guarantor’s obligations hereunder, a continuing lien on and security interest in all securities or other property belonging to the Guarantor now or hereafter held by the Bank and in all deposits (general or special, time or demand, provisional or final) and other sums credited by or due from the Bank to the Guarantor or subject to withdrawal by the Guarantor; and regardless of the adequacy of any collateral or other means of obtaining repayment of the Obligations, the Bank is hereby authorized at any time and from time to time, without notice to the Guarantor (any such notice being expressly waived by the Guarantor) and to the fullest extent permitted by law, to set off and apply such deposits and other sums against the obligations of the Guarantor under this Guaranty.

8.          FURTHER ASSURANCES. Intentionally Deleted.

9.          TERMINATION; REINSTATEMENT. This Guaranty shall remain in full force and effect until the Bank is given written notice of the Guarantor’s intention to discontinue this Guaranty, notwithstanding any intermediate or temporary payment or settlement of the whole or any part of the Obligations. No such notice shall be effective unless received and acknowledged by an officer of the Bank at its head office or at the branch of the Bank where this Guaranty is given. No such notice shall affect any rights of the Bank or of any affiliate hereunder including, without limitation, the rights set forth in Sections 4 and 6, with respect to the Obligation. This Guaranty shall continue to be effective or be reinstated, notwithstanding any such notice, if at any time any payment made or value received with respect to the Obligation is rescinded or must otherwise be returned by the Bank upon the insolvency, bankruptcy or reorganization of the Customer, or otherwise, all as though such payment had not been made or value received.

10.        SUCCESSORS AND ASSIGNS. This Guaranty shall be binding upon the Guarantor, its successors and assigns, and shall inure to the benefit of and be enforceable by the Bank and its successors, transferees and assigns. Without limiting the generality of the foregoing sentence, the Bank may assign or otherwise transfer the Obligations, or sell participations in any interest therein, to any other person or entity, and such other person or entity shall thereupon become vested, to the extent set forth in the agreement evidencing such assignment, transfer or participation, with all the rights in respect thereof granted to the Bank herein.

11.        AMENDMENTS AND WAIVERS. No amendment or waiver of any provision of this Guaranty nor consent to any departure by the Guarantor therefrom shall be effective unless the same shall be in writing and signed by the Bank. No failure on the part of the Bank to exercise, and no delay in exercising, any right hereunder shall operate as a waiver thereof; nor shall any single or partial exercise of any right hereunder preclude any other or further exercise thereof or the exercise of any other right.

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12.        NOTICES. All notices and other communications called for hereunder shall be made in writing and, unless otherwise specifically provided herein, shall be deemed to have been duly made or given when delivered by hand or mailed first class mail postage prepaid or, in the case of telegraphic or telexed notice, when transmitted, answer back received, addressed as follows: if to the Guarantor, at the address set forth beneath its signature hereto, and if to the Bank, at One Conant Street, Danvers, Massachusetts 01923, or at such address as either party may designate in writing.

13.        GOVERNING LAW; CONSENT TO JURISDICTION. This Guaranty is intended to take effect as a sealed instrument and shall be governed by, and construed in accordance with, the laws of the Commonwealth of Massachusetts. The Guarantor agrees that any suit for the enforcement of this Guaranty may be brought in the courts of the Commonwealth of Massachusetts or any federal court sitting therein and consents to the non-exclusive jurisdiction of such court and to service of process in any such suit being made upon the Guarantor by mail at the address specified in Section 12 hereof. The Guarantor hereby waives any objection that it/he/she may now or hereafter have to the venue of any such suit or any such court or that such suit was brought in an inconvenient court.

14.        MISCELLANEOUS. This Guaranty constitutes the entire agreement of the Guarantor with respect to the matters set forth herein. The rights and remedies herein provided are cumulative and not exclusive of any remedies provided by law or any other agreement, and this Guaranty shall be in addition to any other guaranty of the Obligations. The invalidity or unenforceability of any one or more sections of this Guaranty shall not affect the validity or enforceability of its remaining provisions. Captions are for the ease of reference only and shall not affect the meaning of the relevant provisions. The meanings of all defined terms used in this Guaranty shall be equally applicable to the singular and plural forms of the terms defined.

15.        JURY WAIVER. THE BANK (BY ITS ACCEPTANCE HEREOF) AND THE GUARANTOR AGREE THAT NEITHER OF THEM, INCLUDING ANY ASSIGNEE OR SUCCESSOR SHALL SEEK A JURY TRIAL IN ANY LAWSUIT, PROCEEDING, COUNTERCLAIM, OR ANY OTHER LITIGATION PROCEDURE BASED UPON, OR ARISING OUT OF, THIS GUARANTY, ANY RELATED INSTRUMENTS, ANY COLLATERAL OR THE DEALINGS OR THE RELATIONSHIP BETWEEN OR AMONG ANY OF THEM, NEITHER THE BANK NOR THE GUARANTOR SHALL SEEK TO CONSOLIDATE ANY SUCH ACTION WITH ANY OTHER ACTION IN WHICH A JURY TRIAL CANNOT BE OR HAS NOT BEEN WAIVED. THE PROVISIONS OF THIS PARAGRAPH HAVE BEEN FULLY DISCUSSED BY THE BANK AND THE GUARANTOR, AND THESE PROVISIONS SHALL BE SUBJECT TO NO EXCEPTIONS. NEITHER THE BANK NOR THE GUARANTOR HAS AGREED WITH OR REPRESENTED TO THE OTHER THAT THE PROVISIONS OF THIS PARAGRAPH WILL NOT BE FULLY ENFORCED IN ALL INSTANCES.

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IN WITNESS WHEREOF, the Guarantor has executed and delivered this Guaranty, or caused this Guaranty to be executed and delivered by its duly authorized officer, as a sealed instrument as of this 9th day of July, 2010.

Then personally appeared the above named C. Wesley Crowell as Manager of Northeast LCD Capital, LLC and acknowledged the foregoing instrument to be his free act and deed in said capacity.

ROBIN A. JOHNSON

Notary Public, [ILLEGIBLE]

My Commission Expires December [ILLEGIBLE], 2011

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