Exhibit 4.1

CERTIFICATE OF DESIGNATION

OF

PREFERRED STOCK

OF

LIGHTING SCIENCE GROUP CORPORATION

To Be Designated

Series E Non-Convertible Preferred Stock

Pursuant to Section 151(g) of the

General Corporation Law of the State of Delaware

The undersigned DOES HEREBY CERTIFY that the following resolution was duly adopted by the Committee of Independent Directors (the “Independent Committee”) of the Board of Directors (the “Board of Directors”) of Lighting Science Group Corporation, a Delaware corporation (the “Corporation”), pursuant to the authority conferred on the Independent Committee pursuant to a resolution duly adopted by the Board of Directors, at a meeting duly convened and held, at which a quorum was present and acting throughout:

RESOLVED, that pursuant to the authority conferred on the Independent Committee by the Board of Directors and by the Corporation’s Certificate of Incorporation, the issuance of a series of preferred stock, par value $0.001 per share, of the Corporation which shall consist of 1,000,000 shares of preferred stock be, and the same hereby is, authorized, and each of the Chief Executive Officer, the Chief Financial Officer, the Chief Operating Officer and the Secretary of the Corporation be, and each hereby is, authorized and directed to execute and file with the Secretary of State of the State of Delaware a Certificate of Designation of Preferred Stock of the Corporation setting forth a copy of this resolution fixing the designations, powers, preferences and rights of the shares of such series, and the qualifications, limitations or restrictions thereof (in addition to the designations, powers, preferences and rights, and the qualifications, limitations or restrictions thereof, set forth in the Certificate of Incorporation which may be applicable to the Corporation’s preferred stock), as follows:

1. Number of Shares; Designation. A total of 1,000,000 shares of preferred stock, par value $0.001 per share, of the Corporation are hereby designated as Series E Non-Convertible Preferred Stock (the “Series”). Shares of the Series (the “Preferred Shares”) are expected to be issued to Pegasus Partners IV, L.P. (“Pegasus IV”) on or about June 23, 2010 pursuant to a Subscription Agreement. The Corporation will initially issue the Preferred Shares in the form of a component of a whole Unit of the Corporation’s securities, and each Unit shall consist of one Preferred Share and a warrant (each, a “Warrant”) to purchase fifty (50) shares of the Corporation’s common stock, par value $0.001 per share (the “Common Stock”) at an initial exercise price of $7.00 per share, subject to adjustment and having the terms and conditions as set forth in that certain warrant agreement entered into as of the date hereof in connection with the issuance of the Units (the “Warrant Agreement”).

2. Rank. The Series shall, with respect to rights upon liquidation, dissolution or winding-up of the affairs of the Corporation, rank:

(a) Senior and prior to the Common Stock and any additional class or series of stock which may in the future be issued by the Corporation and is designated in the amendment to the Certificate of Incorporation or the certificate of designation establishing such additional class or series of stock as ranking junior to the Preferred Shares or which do not state they are Parity Liquidation Shares (as defined below) or Senior Liquidation Shares (as defined below). Any shares of the Corporation’s Capital Stock which are junior to the Preferred Shares with respect to rights upon a Liquidation Event (as defined below) are hereinafter referred to as “Junior Liquidation Shares.”

(b) Pari passu with the Series D Preferred Stock of the Corporation and any additional class or series of stock which may in the future be issued by the Corporation and is designated in the amendment to the Certificate of Incorporation or the certificate of designation establishing such additional class or series of stock as ranking equal to the Preferred Shares. Any shares of the Corporation’s Capital Stock which are equal to the Preferred Shares with respect to rights upon liquidation, dissolution or winding-up of the affairs of the Corporation are hereinafter referred to as “Parity Liquidation Shares.”

(c) Junior to the Series B Preferred Stock of the Corporation and Series C Preferred Stock of the Corporation.

(d) Junior to any additional class or series of stock which may in the future be issued by the Corporation and is designated in the amendment to the Certificate of Incorporation or the certificate of designation establishing such additional class or series of stock as ranking senior to the Preferred Shares. Any shares of the Corporation’s Capital Stock that rank senior to the Preferred Shares with respect to rights upon a Liquidation Event are hereinafter referred to as “Senior Liquidation Shares.”

3. Dividends.

(a) Dividends shall accrue on each Preferred Share at an annual rate of 13.454% (the “Dividend Rate”) multiplied by the Liquidation Value (as defined below) for each Preferred Share and no more (the “Annual Dividend”). Dividends on each Preferred Share shall accrue annually on the anniversary of the original issuance date of such Preferred Share (each, a “Dividend Payment Date”), commencing on the first Dividend Payment Date immediately following the applicable issue date of such Preferred Share. The Annual Dividend on each Preferred Share shall accrue to the Liquidation Value, and be cumulative, whether or not earned or declared, and whether or not sufficient funds are legally available in respect thereof, from the applicable issue date of such Preferred Share and shall compound annually on the next succeeding Dividend Payment Date.

(b) Subject to Section 3(c) and the terms of the Warrant Agreement, of the Annual Dividend payable pursuant to Section 3(a), the portion of the Annual Dividend equal to 5.454% multiplied by the Liquidation Value (the “Exercise Price Accrual Rate”) shall not be payable in cash, stock or property, but shall accrue solely for purposes of funding the payment of the exercise price of all or a portion of the Warrant(s) held by such Holder (the “Exercise Price Accrual”). The remainder of the Annual Dividend in excess of the Exercise Price Accrual (8%) shall be payable solely by accrual to Liquidation Value (the “LV Accrual”, and the rate of such remainder is referred to herein as the “LV Accrual Rate”).

(c) The Exercise Price Accrual shall not be payable in cash, stock or property but shall be credited to an account for the benefit of the Holder and used solely to fund payment of the exercise price of all or a portion of the Warrants in accordance with the terms of the Warrant Agreement. Except for in the case of the surrender by a Holder of all or a portion of such Holder’s Preferred Shares pursuant to Section 5, the Exercise Price Accrual credited to the account of a Holder may not be applied by such Holder to fund payment of all or a portion of the exercise price of the Warrant(s) held by such Holder until: (i) the eighth anniversary of the date of original issuance (the “Redemption Date”) or (ii) the Deemed Redemption Date (as defined below). Any Exercise Price Accrual amounts applied by a Holder to fund payment of the exercise price of the Warrant(s) pursuant to this Section 3(c) and in accordance with the terms of the Warrant Agreement shall be surrendered by the Holder. Upon the Redemption Date or the Deemed Redemption Date, any Exercise Price Accrual in excess of the exercise price of the Warrant(s) held by such Holder shall be surrendered by the Holder.

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(d) For the avoidance of doubt, assuming no surrenders or adjustments whatsoever, the Liquidation Value, the Annual Dividend, Exercise Price Accrual and cumulative Exercise Price Accrual with respect to one Preferred Share shall be as follows:

4. Liquidation.

(a) The liquidation value per Preferred Share shall be an amount equal to (i) $127.50 per share (the “Purchase Price”), subject to adjustment in the event of a stock split or similar event applicable to the Series, plus (ii) the Annual Dividend on such Preferred Share from the date of original issuance through the applicable measurement date (the sum of the foregoing clauses (i) and (ii) being hereinafter referred to as the “Liquidation Value”). The Liquidation Value per Preferred Share, in case of the voluntary or involuntary liquidation, dissolution or winding-up of the affairs of the Corporation or a Change of Control (each, a “Liquidation Event”, and the date of such Liquidation Event being referred to herein as the “Deemed Redemption Date”), shall be an amount equal to the Liquidation Value as of the Redemption Date, as if such Holder held the Preferred Share until the Redemption Date; provided, however, the unearned portion of the Annual Dividend that accelerates as a result of this Section 4(a) shall not be payable in cash, stock or property but shall accrue solely for purposes of funding the payment of the exercise price of all or a portion of the Warrant(s) held by such Holder and be deemed the Exercise Price Accrual for all purposes thereafter.

(b) Upon the occurrence of any Liquidation Event, the Holders (i) shall not be entitled to receive the Liquidation Value of the Preferred Shares held by them until the liquidation value of all Senior Liquidation Shares shall have been paid in full, and (ii) shall be entitled to receive an amount in cash equal to the Liquidation Value, less the Exercise Price Accrual (which amount shall remain credited to the account of the Holders in accordance with Section 4(c)), of such shares held by them in preference to and in priority over any distributions upon the Junior Liquidation Shares. Upon payment in full of the Liquidation Value to which the Holders are entitled, the Holders will not be entitled to any further participation in any distribution of assets by the Corporation and the Preferred Shares held by such Holders shall be deemed redeemed. If the assets of the Corporation are not sufficient to pay in full the Liquidation Value payable to the Holders and the liquidation value payable to the holders of any Parity Liquidation Shares, the holders of all such shares shall share ratably in such distribution of assets in accordance with the amounts that would be payable on the distribution if the amounts to which the Holders and the holders of Parity Liquidation Shares are entitled were paid in full.

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(c) In the event of any Liquidation Event, the cumulative amount of the Exercise Price Accrual (including the accelerated portion thereof pursuant to Section 4(a)) for each Preferred Share shall remain credited to the account of the Holder until used to fund the payment of the exercise price of all or a portion of the Holder’s Warrant(s) or until the date that such Holder’s Warrant(s) are no longer exercisable in accordance with the terms of the Warrants.

(d) The Corporation shall, no later than the Deemed Redemption Date, deliver written notice of such Liquidation Event to each Holder stating (i) the Redemption Price (defined below) and (ii) the date or dates when and the place or places where the amounts distributable in such circumstances shall be payable. Any payment required by this Section 4 shall be made not less than 30 days after the date of the Liquidation Event.

5. Surrender; Conversion. Except as provided in this Section 5, Holders of the Preferred Shares shall have no right to exchange or convert such shares into any other securities.

(a) In accordance with the terms of the Warrant Agreement and subject to this Section 5, a Holder may elect to fund payment of all or a portion of the exercise price of such Holder’s Warrant(s) being exercised by such Holder by the surrender of all or a portion of such Holder’s Preferred Share(s) having a Liquidation Value equal to that portion of the exercise price that such Holder elects to satisfy by the surrender of Preferred Share(s).

(b) Except for a payment required to be made on the Redemption Date or any Deemed Redemption Date, no Holder shall be entitled to receive cash or other consideration in satisfaction of the excess of the aggregate Liquidation Value of the Preferred Shares surrendered over the aggregate exercise price of the Warrant(s) exercised (the “Excess Amount”), it being understood that the Excess Amount shall never exceed the exercise price payable upon exercise of a Warrant to purchase one share of Common Stock. In the event that a Holder exercises a Warrant or Warrants pursuant to the terms of the Warrants and this Section 5 and such exercise results in an Excess Amount, then at the Holder’s option the Excess Amount: (i) shall be forfeited to the Corporation or (ii) may be applied to exercise a Warrant to purchase one additional share of Common Stock; provided, however, that such Holder shall pay an amount in cash equal to the difference between the Excess Amount and the exercise price of the Warrant; provided further, that this option (ii) shall not be available if the Holder does not hold at least one Warrant immediately following the exercise resulting in the Excess Amount. If the Holder does not make an election with respect to the Excess Amount, then the Excess Amount will be deemed to be forfeited to the Corporation.

6. Voting Rights. Unless otherwise provided by law, the Certificate of Incorporation or Section 7, the Holders shall not have the right to vote for the election of directors or on any other matters presented to the Corporation’s stockholders for action by their written consent or at any annual or special meeting of stockholders. On any matter on which the Holders are entitled by law or under the Certificate of Incorporation to vote separately as a class, each such Holder shall be entitled to one vote for each share held, and such matter shall be determined by a majority of the Preferred Shares voting on such matter.

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7. Restrictions and Limitations.

So long as any Preferred Shares remain outstanding, the Corporation shall not, without the vote or written consent by the Holders of at least a majority of the outstanding Preferred Shares, voting together as a single class:

In the event that the Holders of at least a majority of the outstanding Preferred Shares agree to allow the Corporation to alter or change the rights, preferences or privileges of the Series pursuant to applicable law, no such change shall be effective to the extent that, by its terms, such change applies to less than all of the Preferred Shares then outstanding.

8. Mandatory Redemption.

(a) Upon the Redemption Date, the Corporation shall, subject to having funds legally available therefor, redeem all, but not less than all, outstanding Preferred Shares at the Liquidation Value; (the “Redemption Price”); provided, however, that the Exercise Price Accrual shall not be payable in cash but shall remain credited to the account of the Holder in accordance with Section 8(d).

(b) The Corporation shall, no later than 30 days prior to the Redemption Date, deliver written notice to each Holder stating (i) the Redemption Price, (ii) the place or places at which certificates representing the Preferred Shares are to be surrendered for payment of the Redemption Price and (iii) any other information that may be required by applicable law. Each Holder shall have 30 days from receipt of such written notice to surrender the Holder’s certificates representing the Preferred Shares.

(c) If on the Redemption Date, the assets of the Corporation legally available to redeem the Preferred Shares shall be insufficient to redeem all outstanding Preferred Shares to be redeemed at the Redemption Price, then (A) the Corporation shall redeem that number of Preferred Shares that may be redeemed with the assets of the Corporation legally available therefor pro rata among the redeeming Holders and (B) any unredeemed Preferred Shares shall be carried forward and shall be redeemed at such time as funds are legally available therefor. All Preferred Shares that are subject to redemption under this Section 8 that have not been redeemed due to the insufficiency of legally available funds therefor shall continue to be outstanding and entitled to all dividends, if any (which shall be payable at the applicable Dividend Rate), liquidation, voting and other rights, preferences and privileges of the Preferred Shares, until such shares are redeemed. For the avoidance of doubt, in such case, the entire Annual Dividend shall be payable as the LV Accrual, and no portion thereof shall be allocated to the Exercise Price Accrual.

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(d) If any Preferred Shares are redeemed pursuant to this Section 8, the cumulative amount of the Exercise Price Accrual for each Preferred Share shall remain credited to the account of the Holder until the date that such Holder’s Warrant(s) are no longer exercisable in accordance with the terms of the Warrants.

(e) All Preferred Shares that are redeemed by the Corporation and subsequently canceled by the Board of Directors pursuant to this Section 8, shall be retired and shall not be subject to reissuance.

9. Transfer. Preferred Shares may only be offered, sold, transferred or assigned in compliance with the Securities Act of 1933, as amended, and applicable state securities laws. Further, Preferred Shares may only be offered, sold, transferred or assigned in conjunction with the sale, transfer or assignment of whole Units only. Any attempted transfer of Preferred Shares in violation of this Section 9 shall be null and void ab initio.

10. Certain Definitions. As used in this Certificate, the following terms shall have the following respective meanings:

“Affiliate” of, or a person “Affiliated” with, a specified person, is a person that directly, or indirectly through one or more intermediaries, controls, or is controlled by, or is under common control with, the person specified.

“Capital Stock” of any person or entity means any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in the common stock or preferred stock of such person or entity, including, without limitation, partnership and membership interests.

“Change of Control” means (a) the sale, conveyance or disposition of all or substantially all of the assets of the Corporation (other than pursuant to a joint venture arrangement or other transaction in which the Corporation, directly or indirectly, receives at least fifty percent (50%) of the voting equity in another entity or a general partnership); (b) the effectuation of a transaction or series of related transactions in which more than fifty percent (50%) of the voting power of the Corporation is disposed of (other than (i) as a direct result of normal, uncoordinated trading activities in the Common Stock generally or (ii) solely as a result of the disposition by a stockholder of the Corporation to an Affiliate of such stockholder); (c) the consolidation, merger or other business combination of the Corporation with or into any other entity, immediately following which the prior stockholders of the Corporation fail to own, directly or indirectly, at least fifty percent (50%) of the voting equity of the surviving entity; (d) a transaction or series of transactions in which any person or “group” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) acquires more than fifty percent (50%) of the voting equity of the Corporation (other than the acquisition by a person or “group” that is an Affiliate of or Affiliated with a person or “group” that immediately prior to such acquisition, beneficially owned fifty percent (50%) or more of the voting equity of the Corporation); (e) the replacement of a majority of the Board of Directors with individuals who were not nominated or elected by at least a majority of the directors at the time of such replacement; or (f) a transaction or series of transactions that constitutes or results in a “going private transaction” (as defined in Section 13(e) of the Exchange Act and the regulations of the Commission issued thereunder).

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“Exchange Act” means the Securities Exchange Act of 1934, as amended.

“Holder” means any holder of Preferred Shares, all of such holders being the “Holders.”

“Unit” means one Preferred Share and a Warrant representing the right to purchase fifty (50) shares of Common Stock.

[signature page follows]

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IN WITNESS WHEREOF, the Corporation has caused this Certificate to be duly executed on its behalf by its undersigned Secretary as of June 23, 2010.

Signature Page to Certificate of Designation of Series E Preferred Stock