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                                                                     Exhibit 3.1

                AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

                                       OF

                                 NEW FOCUS, INC.

         New Focus, Inc., a corporation organized and existing under the laws of
the State of Delaware (the "Corporation"), hereby certifies that:

         A. The name of this Corporation is New Focus, Inc.

         B. The date of filing of this Corporation's original Certificate of
Incorporation with the Secretary of State of Delaware was February __, 2000.

         C. Pursuant to Sections 242 and 245 of the Delaware General Corporation
law, this Restated Certificate of Incorporation restates, integrates and amends
the provisions of the Corporation's Amended and Restated Certificate of
Incorporation as follows:

         FIRST:   The name of this Corporation is New Focus, Inc.

         SECOND: The address of the Corporation's registered office in the State
of Delaware is 1209 Orange Street, Wilmington, County of New Castle, Delaware
19801. The name of its registered agent at such address is The Corporation Trust
Company.

         THIRD: The purpose of this Corporation is to engage in any lawful act
or activity for which corporations may be organized under the General
Corporation Law of Delaware.

         FOURTH: This Corporation is authorized to issue two classes of shares
to be designated, respectively, Common Stock and Preferred Stock. The total
number of shares of Common Stock which this corporation is authorized to issue
is ___________, with a par value of $0.001, and the total number of shares of
Preferred Stock which this corporation is authorized to issue is 10,000,000,
with a par value of $0.001.

         The Preferred Stock may be issued from time to time in one or more
series pursuant to a resolution or resolutions providing for such issue duly
adopted by the Board of Directors (authority to do so being hereby expressly
vested in the Board). The Board of Directors is further authorized to determine
or alter the rights, preferences, privileges and restrictions granted to or
imposed upon any wholly unissued series of Preferred Stock and, to fix the
number of shares of any such series of Preferred Stock and the designation of
any such series of Preferred Stock. The Board of Directors is authorized, within
the limits and restrictions stated in any resolution or resolutions of the Board
of Directors originally fixing the number of shares constituting any series, to
increase or decrease (but not below the number of shares thereof then
outstanding) the number of shares of any such series subsequent to the issue of
shares of that series, to determine the designation of any series, and to fix
the number of shares of any series.

         FIFTH:   The Corporation is to have perpetual existence.
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         SIXTH: Elections of directors need not be by written ballot unless a
stockholder demands election by written ballot at the meeting and before voting
begins or unless the Bylaws of the Corporation shall so provide.

         SEVENTH: A. The management of the business and the conduct of the
affairs of the Corporation shall be vested in its Board of Directors. The number
of directors which shall constitute the whole Board of Directors shall be
designated in the Bylaws of the Corporation.

                  B. Except with respect to directors who may be elected by the
holders of any class or series of stock having preferences over the Common Stock
as to dividends or upon liquidation, the directors shall be classified as set
forth herein. The Board of Directors shall be divided, as nearly equal in number
as reasonably into three classes designated as Class I, Class II, and Class III,
respectively. Directors shall be assigned to each class in accordance with a
resolution or resolutions adopted by the Board of Directors. At the first annual
meeting of stockholders following the date hereof, the term of office of the
Class I directors shall expire, and Class I directors shall be elected for a
full term of three years. At the second annual meeting of stockholders following
the date hereof, the term of office of the Class II directors shall expire, and
Class II directors shall be elected for a full term of three years. At the third
annual meeting of stockholders following the date hereof, the term of office of
the Class III directors shall expire, and Class III directors shall be elected
for a full term of three years. At each succeeding annual meeting of
stockholders, directors shall be elected for a full term of three years to
succeed the directors of the class whose terms expire at such annual meeting.

                  C. Notwithstanding the foregoing provisions of this Article,
each director shall serve until his or her successor is duly elected and
qualified or until his or her death, resignation, or removal. No decrease in the
number of directors constituting the Board of Directors shall shorten the term
of any incumbent director.

                  D. Any vacancies on the Board of Directors resulting from
death, resignation, disqualification, removal, or other causes shall be filled
by either (i) the affirmative vote of the holders of a majority of the voting
power of the then-outstanding shares of voting stock of the Corporation entitled
to vote generally in the election of directors (the "Voting Stock") voting
together as a single class; or (ii) by the affirmative vote of a majority of the
remaining directors then in office, even though less than a quorum of the Board
of Directors. Newly created directorships resulting from any increase in the
number of directors shall, unless the Board of Directors determines by
resolution that any such newly created directorship shall be filled by the
stockholders, be filled only by the affirmative vote of the directors then in
office, even though less than a quorum of the Board of Directors. Any director
elected in accordance with the preceding sentence shall hold office for the
remainder of the full term of the class of directors in which the new
directorship was created or the vacancy occurred and until such director's
successor shall have been elected and qualified.

                  E. The affirmative vote of sixty-six and two-thirds percent
(66-2/3%) of the voting power of the then outstanding shares of Voting Stock,
voting together as a single class, shall be required for the adoption, amendment
or repeal of the following sections of the Corporation's Bylaws by the
stockholders of the Corporation: 2.2 (Annual Meeting) and 2.3 (Special Meeting).

                  F. No action shall be taken by the stockholders of the
Corporation except at an annual or special meeting of the stockholders called in
accordance with the Bylaws.

                  G. Any director, or the entire Board of Directors, may be
removed from office at any time (i) with cause by the affirmative vote of the
holders of at least a majority of the voting power of all of the
then-


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outstanding shares of the Voting Stock, voting together as a single class; or
(ii) without cause by the affirmative vote of the holders of at least sixty-six
and two-thirds percent (66-2/3%) of the voting power of all of the
then-outstanding shares of the Voting Stock.

         EIGHTH: A. To the fullest extent permitted by the Delaware General
Corporation Law as the same exists or as may hereafter be amended, no director
of the Corporation or any subsidiary of the Corporation shall be personally
liable to the Corporation or its stockholders and shall otherwise be indemnified
by the Corporation for monetary damages for breach of fiduciary duty as a
director of the Corporation, any predecessor of the Corporation or any
subsidiary of the Corporation.

                  B. The Corporation shall indemnify to the fullest extent
permitted by law any person made or threatened to be made a party to an action
or proceeding, whether criminal, civil, administrative or investigative, by
reason of the fact that he, his testator or intestate is or was a director or
officer of the Corporation, any predecessor of the Corporation or any subsidiary
of the Corporation or serves or served at any other enterprise as a director or
officer at the request of the Corporation, any predecessor to the Corporation or
any subsidiary of the Corporation.

                  C. Neither any amendment nor repeal of this Article EIGHTH,
nor the adoption of any provision of the Corporation's Certificate of
Incorporation inconsistent with this Article EIGHTH, shall eliminate or reduce
the effect of this Article EIGHTH, in respect of any matter occurring, or any
action or proceeding accruing or arising or that, but for this Article EIGHTH,
would accrue or arise, prior to such amendment, repeal, or adoption of an
inconsistent provision.

         NINTH: Notwithstanding any other provisions of this Certificate of
Incorporation or any provision of law which might otherwise permit a lesser vote
or no vote, but in addition to any affirmative vote of the holders of any
particular class or series of the Voting Stock required by law, this Certificate
of Incorporation or any rights of designation of Preferred Stock conferred on
the Board of Directors pursuant to Article FOURTH, the affirmative vote of the
holders of at least sixty-six and two-thirds percent (66-2/3%) of the voting
power of all of the then-outstanding shares of the Voting Stock, voting together
as a single class, shall be required to alter, amend or repeal Article SEVENTH
or this Article NINTH.

         TENTH: The Corporation reserves the right to amend, alter, change or
repeal any provision contained in this Certificate of Incorporation, in the
manner now or hereafter prescribed by statute, except as provided in Article
NINTH of this Certificate, and all rights conferred upon the stockholders herein
are granted subject to this right.

         ELEVENTH: In furtherance and not in limitation of the powers conferred
by statute, the Board of Directors is expressly authorized to make, alter, amend
or repeal the Bylaws of the Corporation.

         TWELFTH: Meetings of stockholders may be held within or without the
State of Delaware, as the Bylaws may provide. The books of the Corporation may
be kept (subject to any provision contained in the statutes) outside of the
State of Delaware at such place or places as may be designated from time to time
by the Board of Directors or in the Bylaws of the Corporation.

         THIRTEENTH: Advance written notice of new business and stockholder
nominations for the election of directors shall be given in the manner and to
the extent provided in the Bylaws of the Corporation.


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         FOURTEENTH: Stockholders shall not be entitled to cumulative voting
rights for the election of directors.

         This Amended and Restated Certificate of Incorporation has been duly
adopted by the stockholders of the Corporation in accordance with the provisions
of Sections 242 and 245 of the General Corporation Law of the State of Delaware,
as amended.

         IN WITNESS WHEREOF, New Focus, Inc. has caused this Amended and
Restated Certificate of Incorporation to be signed by Kenneth E. Westrick, its
President, and Chief Executive Officer on this ____ day of ________, 2000



                                                  NEW FOCUS, INC.




                                                  ______________________________
                                                  Kenneth E. Westrick, President


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