II-VI INCORPORATED


AMENDED AND RESTATED
ARTICLES OF INCORPORATION
(As amended through November 8, 2004)



1.  The name of the corporation is:

II-VI INCORPORATED

2.  The location and post office address of its registered office in
    the Commonwealth of Pennsylvania is:

Saxonburg Boulevard
Saxonburg, Pennsylvania 16056

3.  The purpose or purposes of the corporation, which is organized
    under the Business Corporation Law of the Commonwealth of
    Pennsylvania, Act of May 5, 1933, (P.L. 364) , as amended, are as
    follows:

    The corporation shall have unlimited power to engage in and to do
    any or all lawful business for which corporations may be
    incorporated under the Business Corporation Law, Act of May 5,
    1933 (P.L. 364), as amended, including, without limitation, the
    power to engage in manufacturing of any nature whatsoever.

4.  The term of its existence is:  Perpetual

5.  The aggregate number of shares which the corporation is authorized
    to issue is:

    One Hundred Million (100,000,000) shares of common stock, having
    no par value per share (the "Common Stock"), and Five Million
    (5,000,000) shares of preferred stock, having no par value per
    share (the "Preferred Stock").

    A description of each class of shares and a statement of the
    designations, voting rights, preferences, qualifications,
    limitations, restrictions and the special or relative rights
    granted to or imposed upon the shares of each class are as
    follows:

    A.  Each share of Common Stock of the corporation shall be
        entitled to one (1) vote.

    B.  The Board of Directors is hereby expressly authorized, at any
        time or from time to time, to divide any or all of the shares
        of Preferred Stock into one or more series, and in the
        resolution or resolutions establishing a particular series,
        before issuance of any of the shares thereof, to fix and
        determine the number of shares and the designation of such
        series, so as to distinguish it from the shares of all other
        series and classes, and to fix and determine the designations,
        voting rights, preferences, qualifications, limitations,
        restrictions and the special or relative rights of the
        Preferred Stock or of such series, to the fullest extent now
        or hereafter permitted by the laws of the Commonwealth of
        Pennsylvania, including, but not limited to, the variations
        between different series in the following respects:

        1)  the distinctive designation of such series and the number
            of shares which shall constitute such series, which number
            may be increased or decreased (but no below the number of
            shares thereof then outstanding) from time to time by the
            Board of Directors;

        2)  the annual dividend rate for such series, and the date or
            dates from which dividends shall commence to accrue:

        3)  the price or prices at which, and the terms and conditions
            on which, the shares of such series may be made
            redeemable;

        4)  the purpose or sinking fund provisions, if any, for the
            purchase or redemption of shares of such series;

        5)  the preferential amount or amounts payable upon shares of
            such series in the event of liquidation, dissolution, or
            winding up of the corporation;

        6)  the voting rights, if any, of shares of such series;

        7)  the terms and conditions, if any, upon which shares of
            such series may be converted and the class or classes or
            series of shares of the corporation or other securities
            into which such shares may be converted;

        8)  the relative seniority, priority or junior rank of such
            series as to dividends, and whether such dividends shall
            be cumulative or non-cumulative, with respect to any other
            classes or series of stock then or thereafter to be
            issued; and

        9)  such other designations, voting rights, preferences,
            qualifications, limitations, restrictions, and special or
            relative rights and preferences, if any, of shares of such
            series as the Board of Directors may, at the time of such
            resolution or resolutions, lawfully fix or determine under
            the laws of the Commonwealth of Pennsylvania.

            Unless otherwise provided by law, the Articles of
            Incorporation, the By-Laws of the corporation or in a
            resolution or resolutions establishing any particular
            series of Preferred Stock, the aggregate number of
            authorized shares of Preferred Stock may be increased by
            an amendment of the Articles of Incorporation approved
            solely by a majority vote of the outstanding shares of
            Common Stock.

            All shares within each series of Preferred Stock shall be
            alike in every particular, except with respect to the
            dates from which dividends shall commence to accrue.

            The Board of Directors  may in its discretion, at any time
            or from time to time, issue or cause to be issued all or
            any part of the authorized and unissued shares of
            Preferred Stock for consideration of such character and
            value as the Board of Directors shall from time to time
            fix or determine.

    C.  There shall be a series of Preferred Stock with the
        designation and relative rights and preferences as follows:

        1)  Designation.  The shares of such series shall be
            designated as "Series One Preferred Stock" and the number
            of shares constituting such series shall initially be
            Three Hundred Thousand (300,000).  Shares of this series
            shall be issued pursuant to the exercise of rights to
            purchase Series One Preferred Stock distributed to the
            holders of Common Stock of the corporation.

        2)  Dividends and Distributions.  Subject to the rights and
            preferences of the holders of any shares of any class or
            series of Preferred Stock ranking senior as to dividends
            to this Series One Preferred Stock, as such may be
            established by the Board of Directors, the holders of
            shares of Series One Preferred Stock, in preference to the
            holders of Common Stock and shares of stock ranking junior
            as to dividends to the Series One Preferred Stock, shall
            be entitled to receive, when and if declared by the Board
            of Directors out of funds legally available for the
            purpose, quarterly dividends payable in cash on the 15th
            day of September, December, March and June in each year
            (each such date being referred to herein as a "Quarterly
            Dividend Payment Date"), commencing on the first Quarterly
            Dividend Payment Date after the first issuance of a share
            or fraction of a share of Series One Preferred Stock, in
            an amount per share (rounded to the nearest cent) equal
            to, subject to the provision for adjustment hereinafter
            set forth, 100 times the aggregate per share amount of all
            cash dividends plus 100 times the aggregate per share
            amount (payable in kind) of all non-cash dividends or
            other distributions, other than a dividend payable in
            shares of Common Stock, or a subdivision of the
            outstanding shares of Common Stock (by reclassification or
            otherwise), paid on the Common Stock at any time during
            the quarter year immediately preceding the quarter year
            ending on the day immediately preceding such Quarterly
            Dividend Payment Date.  In the event the corporation shall
            at any time after August 11, 2001 (the "Rights Declaration
            Date") during any quarter year immediately preceding the
            quarter year ending on the day immediately preceding a
            Quarterly Dividend Payment Date (i) declare any dividend
            on Common Stock payable in shares of Common Stock, or (ii)
            subdivide the outstanding Common Stock or combine the
            outstanding Common Stock into a greater or lesser number
            of shares of Common Stock, then in each such case the
            amounts to which holders of shares of Series One Preferred
            Stock were entitled immediately prior to such event under
            the preceding sentence shall be adjusted by multiplying
            each such amount by a fraction, the numerator of which is
            the number of shares of Common Stock outstanding
            immediately after such event and the denominator of which
            is the number of shares of Common Stock that were
            outstanding immediately prior to such event.

            Dividends shall begin to accrue and be cumulative on
            outstanding shares of Series One Preferred Stock from the
            Quarterly Dividend Payment Date next preceding the date of
            issue of such shares of Series One Preferred Stock, unless
            the date of issue is a Quarterly Dividend Payment Date or
            is a date after the record date for the determination of
            holders of shares of Series One Preferred Stock entitled
            to receive a quarterly dividend and before such Quarterly
            Dividend Payment Date, in either of which events such
            dividends shall begin to accrue and be cumulative from
            such Quarterly Dividend Payment Date.  Accrued but unpaid
            dividends shall not bear interest.  Dividends paid on the
            shares of Series One Preferred Stock in an amount less
            than the total amount of such dividends at the time
            accrued and payable on such shares shall be allocated pro
            rata on a share-by-share basis among all such shares at
            the time outstanding.  The Board of Directors may fix a
            record date for the determination of holders of shares of
            Series One Preferred Stock entitled to receive payment of
            a dividend or distribution declare thereon, which record
            date shall be no more than 30 days prior to the date fixed
            for the payment thereof.

        3)  Voting Rights.

            (a)  Each share of Series One Preferred Stock shall
            entitle the holder thereof to 100 votes (and each one one-
            hundredth of a share of Series One Preferred Stock shall
            entitle the holder thereof to one vote) on all matters
            submitted to a vote of the shareholders of the
            corporation.  In the event that the corporation shall at
            any time declare or pay any dividend on Common Stock
            payable in shares of Common Stock or effect a subdivision
            or combination or consolidation of the outstanding shares
            of Common Stock (by reclassification or otherwise than by
            payment of a dividend in shares of Common Stock) into a
            greater or lesser number of shares of Common Stock, then
            and in each such event, the number of votes per share to
            which holders of shares of Series One Preferred Stock were
            entitled immediately prior to such event shall be adjusted
            by multiplying such number by a fraction, the numerator of
            which is the number of shares of Common Stock outstanding
            immediately after such event, and the denominator of which
            is the number of shares of Common Stock that were
            outstanding immediately prior to such event.

            (b)  Except as otherwise provided herein or by applicable
            law, the holders of shares of Series One Preferred Stock
            and the holders of shares of Common Stock shall vote
            together as one class for the election of directors of the
            corporation and on all other matters submitted to a vote
            of shareholders of the corporation.

            (c)  Except as provided herein or by applicable law,
            holders of Series One Preferred Stock shall have no
            special voting rights and their consent shall not be
            required (except to the extent they are entitled to vote
            with holders of Common Stock as set forth herein) for
            authorizing or taking any corporate action.

        4)  Certain Restrictions.

            (a)  Whenever quarterly dividends or other dividends or
            distributions payable on the Series One Preferred Stock as
            provided in Section 2 are in arrears, thereafter and until
            all accrued and unpaid dividends and distributions,
            whether or not declared, on shares of Series One Preferred
            Stock outstanding shall have been paid in full, the
            corporation shall not:

                 (i)    declare or pay dividends on, make any other
                 distributions on, or redeem or purchase or otherwise
                 acquire for consideration any shares of stock ranking
                 junior (either as to dividends or as to assets) to
                 the Series One Preferred Stock;

                 (ii)   declare or pay dividends on or make any other
                 distributions on any shares of stock ranking on a
                 parity (either as to dividends or as to assets) with
                 the Series One Preferred Stock, except dividends paid
                 ratably on the Series One Preferred Stock and all
                 such parity stock on which dividends are payable or
                 in arrears in proportion to the total amounts to
                 which the holders of all such shares are then
                 entitled;

                 (iii)  redeem or purchase or otherwise acquire for
                 consideration shares of any stock ranking junior
                 (either as to dividends or as to assets) to the
                 Series One Preferred Stock, provided that the
                 corporation may at any time redeem, purchase or
                 otherwise acquire shares of any such junior stock in
                 exchange for shares of any stock of the corporation
                 ranking junior (either as to dividends or as to
                 assets) to the Series One Preferred Stock; or

                 (iv)  purchase or otherwise acquire for consideration
                 any shares of Series One Preferred Stock, or any
                 shares of stock ranking on a parity (either as to
                 dividends or upon liquidation, dissolution or winding
                 up) with the Series One Preferred Stock, except in
                 accordance with a purchase offer made in writing or
                 by publication (as determined by the Board of
                 Directors) to all holders of such shares upon such
                 terms as the Board of Directors, after consideration
                 of the respective annual dividend rates and other
                 relative rights and preferences of the respective
                 series and classes, shall determine in good faith
                 will result in fair and equitable treatment among the
                 respective series or classes.

            (b)  The corporation shall not permit any subsidiary of
            the corporation to purchase or otherwise acquire for
            consideration any shares of stock of the corporation
            unless the corporation could, under Paragraph (A) of this
            Section 4, purchase or otherwise acquire such shares at
            such time and in such manner.

        5)  Reacquired Shares.  Any shares of Series One Preferred
            Stock purchased or otherwise acquired by the corporation
            in any manner whatsoever shall be retired and cancelled
            promptly after the acquisition thereof.  All such shares
            shall upon their cancellation become authorized but
            unissued shares of Series One Preferred Stock and may be
            reissued as part of the same or a new series of Preferred
            Stock to be created by resolution or resolutions of the
            Board of Directors, subject to the conditions and
            restrictions on issuance set forth herein.

        6)  Liquidation, Dissolution or Winding Up.  Subject to the
            rights and preferences of the holders of any shares of any
            class or series of Preferred Stock ranking senior as to
            assets to this Series One Preferred Stock, upon any
            involuntary or voluntary liquidation, dissolution or
            winding up of the corporation, no distribution shall be
            made to the holders of shares of stock ranking junior
            (either as to dividends or as to assts) to the Series One
            Preferred Stock unless, prior thereto, the holders of
            shares of Series One Preferred Stock shall have received
            an amount per share equal to the Per Share Series One
            Liquidation Preference.  Following the payment of the full
            amount of the Series One Liquidation Preference, holders
            of shares of Common Stock shall receive the remaining
            assets to be distributed.

            The "Per Share Series One Liquidation Preference" shall be
            equal to the sum of (x) $100.00 plus an amount equal to
            accrued and unpaid dividends and distribution thereon,
            whether or not declared, to the date of such payment, plus
            (y) the Participation Preference.  The "Participation
            Preference" is an amount per each share of Series One
            Preferred Stock outstanding, equal to the product of (A)
            the Excess Distribution Amount (as hereinafter defined)
            times (B) a fraction the numerator of which is 100 and the
            denominator of which is the sum of (i) the product of 100
            times the number of outstanding shares of Series One
            Preferred Stock, plus (ii) the product of 100 times a
            fraction the numerator of which is the number of
            outstanding shares of Common Stock and the denominator of
            which is the Adjustment Number (as hereinafter defined);
            provided, however, if the foregoing computation results in
            a negative number, then the Participation Preference shall
            be 0.

            The "Excess Distribution Amount" is an amount equal to the
            amount available for distribution to shareholders of the
            corporation after payment of all debts and liabilities
            less the sum of (i) the liquidation preferences in respect
            of all shares of Preferred Stock of the corporation other
            than the Series One Preferred Stock, (ii) the product of
            100 times the number of outstanding shares of Series One
            Preferred Stock, and (iii) the product of the number of
            outstanding shares of Common Stock times a fraction the
            numerator of which is 100 and the denominator of which is
            the Adjustment Number.

            The "Adjustment Number" shall initially be 100 and shall
            be subject to adjustment as provided in this paragraph.
            In the event the corporation shall at any time after the
            Rights Declaration Date (i) declare any dividend on Common
            Stock payable in shares of Common Stock, (ii) subdivide
            the outstanding Common Stock, or (iii) combine the
            outstanding Common Stock into a smaller number of shares,
            then in each such case the Adjustment Number in effect
            immediately prior to such event shall be adjusted by
            multiplying such Adjustment Number by a fraction the
            numerator of which is the number of shares of Common Stock
            outstanding immediately after such event and the
            denominator of which is the number of shares of Common
            Stock that were outstanding immediately prior to such
            event.

        7)  Consolidation, Merger, etc.  In case the corporation shall
            enter into any consolidation, merger, combination or other
            transaction in which the shares of Common Stock are
            exchanged for or changed into other stock or securities,
            cash and/or any other property, then in any such case the
            shares of Series One Preferred Stock shall at the same
            time be similarly exchanged or changed in an amount per
            share (subject to the provision for adjustment hereinafter
            set forth) equal to 100 times the aggregate amount of
            stock, securities, cash and/or any other property (payable
            in kind), as the case may be, into which or for which each
            share of Common Stock is changed or exchanged.  In the
            event the corporation shall at any time (i) declare any
            dividend on Common Stock payable in shares of Common
            Stock, or (ii) subdivide the outstanding Common Stock or
            combine the outstanding Common Stock into a greater or
            lesser number of shares of Common Stock, then in each such
            case the amount set forth in the preceding sentence with
            respect to the exchange or change of shares of Series One
            Preferred Stock shall be adjusted by multiplying such
            amount by a fraction the numerator of which is the number
            of shares of Common Stock outstanding immediately after
            such event and the denominator of which is the number of
            shares of Common Stock that were outstanding immediately
            prior to such event.

        8)  Redemption.  The outstanding shares of Series One
            Preferred Stock may be redeemed at the option of the Board
            of Directors as a whole, but not in part, at any time, or
            from time to time, at a cash price per share equal to (i)
            the product of the Adjustment Number times the Average
            Market Value of the Common Stock, plus (ii) all dividends
            which on the redemption date have accrued on the shares to
            be redeemed and have not been paid or declared and a sum
            sufficient for the payment thereof set apart, without
            interest; provided, however, that if and whenever any
            quarter-yearly dividend shall have accrued on the Series
            One Preferred Stock which has not been paid or declared
            and a sum sufficient for the payment thereof set apart,
            the corporation may not purchase or otherwise acquire any
            shares of Series One Preferred Stock unless all shares of
            such stock at the time outstanding are so purchased or
            otherwise acquired.  The "Average Market Value" is the
            average of the closing sale prices of the Common Stock
            during the 30 day period immediately preceding the date
            before the redemption date on Nasdaq or any system then in
            use, or if no such quotations are available, the fair
            market value of the Common Stock as determined by the
            Board of Directors in good faith.

        9)  Fractional Shares.  Series One Preferred Stock may be
            issued in fractions of a share which shall entitle the
            holder, in proportion to such holder's fractional shares,
            to exercise voting rights, if applicable, receive
            dividends, participate in distributions and to have the
            benefit of all other rights of holders of Series One
            Preferred Stock.

6.  A.  In addition to the right of the Board of Directors under law
        to remove a director for cause, and subject to the rights of
        the holder of any series of Preferred Stock then outstanding,
        any director, any class of directors, or the entire Board of
        Directors may be removed from office by a vote of the
        shareholders at any time, with or without assigning any cause,
        but only if shareholders entitled to cast at least two-thirds
        (2/3) of the votes which all shareholders would be entitled to
        cast at an annual election of directors or of such class shall
        vote in favor of such removal provided, however, that no
        individual director shall be removed (unless the entire Board
        of Directors or any class of directors shall be removed) if
        the votes cast against such removal would be sufficient, if
        voted cumulatively for such director, to elect him or her to
        the class of directors of which he or she is a member.

    B.  Notwithstanding any other provisions of law, the Articles of
        Incorporation or the By-laws of the corporation, the
        affirmative vote of shareholders entitled to cast at least
        two-thirds (2/3) of the votes which all shareholders would be
        entitled to cast at an annual election of directors, voting
        together as a single class, shall be required to amend, alter,
        or repeal, or to adopt any provision inconsistent with this
        Article 6 or any provision of the By-laws of the corporation
        relating to the number of directors, the classification of
        directors, and/or the filling of vacancies on the Board of
        Directors; provided, however, that this Paragraph B shall not
        apply to and such two-thirds (2/3) vote shall not be required
        for any such amendment, repeal, or adoption unanimously
        approved by all of the directors of the corporation.