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                                   EXHIBIT 4.1

                     EVANS & SUTHERLAND COMPUTER CORPORATION
                             1998 STOCK OPTION PLAN

ARTICLE 1 - PURPOSE

     1.1  GENERAL. The purpose of the Evans & Sutherland Computer Corporation
1998 Stock Option Plan (the "Plan") is to promote the success, and enhance the
value, of Evans & Sutherland Computer Corporation (the "Company") by linking the
personal interests of its officers, employees, and consultants or independent
contractors to those of Company stockholders and by providing its officers,
employees, and consultants or independent contractors with an incentive for
outstanding performance. The Plan is further intended to provide flexibility to
the Company in its ability to motivate, attract, and retain the services of
officers, employees, and consultants or independent contractors upon whose
judgment, interest, and special effort the successful conduct of the Company's
operation is largely dependent. Accordingly, the Plan permits the grant of stock
options from time to time to officers, employees, and consultants or independent
contractors.

ARTICLE 2 - EFFECTIVE DATE

     2.1  EFFECTIVE DATE. The Plan is effective as of April 13, 1998 (the
"Effective Date").

ARTICLE 3 - DEFINITIONS AND CONSTRUCTION

     3.1  DEFINITIONS. When a word or phrase appears in this Plan with the
initial letter capitalized, and the word or phrase does not commence a sentence,
the word or phrase shall generally be given the meaning ascribed to it in this
Section or in Sections 1.1 or 2.1 unless a clearly different meaning is required
by the context. The following words and phrases shall have the following
meanings:

          (a)  "Board" means the Board of Directors of the Company.

          (b)  "Change of Control" means any of the following: (i) the Company
     executes a definitive agreement to merge or consolidate with or into
     another corporation in which the Company is not the surviving corporation
     and the Company's common stock is converted into or exchanged for stock or
     securities of any other corporation, cash, or any other thing of value;
     (ii) the Company executes a definitive agreement to sell or otherwise
     dispose of substantially all its assets; (iii) the Company undergoes a
     change of control of the nature required to be reported in response to item
     6(e) of Schedule 14A promulgated under the Securities Exchange Act of 1934,
     as amended; (iv) a public announcement that more than thirty percent (30%)
     of the Company's then outstanding voting stock has been acquired by any
     person or group; or (v) a change is made in the membership of the Board
     resulting in a membership of which less than a majority were also members
     of the Board on the date two years prior to such change, unless the
     election, or the nomination for election by the stockholders of the
     Company, of each new director was approved by the vote of at last
     two-thirds of the directors then still in office who were directors on the
     date two years prior to such change.

          (c)  "Code" means the Internal Revenue Code of 1986, as amended.

          (d)  "Committee" means the committee of the Board described in
     Article 4.

          (e)  "Disability" shall mean any illness or other physical or mental
     condition of a Participant which renders the Participant incapable of
     performing his customary and usual duties for the Company, or any medically
     determinable illness or other physical or mental condition resulting from a
     bodily injury, disease or mental disorder which in the judgment of the
     Committee is permanent and continuous in nature. The Committee may require
     such medical or other evidence as it deems necessary to judge the nature
     and permanency of the Participant's condition.

          (f)  "Fair Market Value" means, as of any given date, the fair market
     value of stock or other property on a particular date determined by such
     methods or procedures as may be established from time to time by the
     Committee. Unless otherwise determined by the Committee, the Fair Market
     Value of stock as
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     of any date shall be the closing price for the stock as reported on the
     NASDAQ National Market System (or on any national securities exchange on
     which the stock is then listed) for that date or, if no closing price is so
     reported for that date, the closing price on the next preceding date for
     which a closing price was reported.

          (g)  "Incentive Stock Option" means an option that is intended to meet
     the requirements of Section 422 of the Code or any successor provision
     thereto.

          (h)  "Non-Employee Director" means a member of the Board who qualifies
     as a "Non-Employee Director" as defined in Rule 16b-3(b)(3) of the Exchange
     Act, or any successor definition adopted by the Board.

          (i)  "Non-Qualified Stock Option" means an option that is not intended
     to be an Incentive Stock Option.

          (j)  "Option" means a right granted to a Participant under Article 7
     of the Plan to purchase stock at a specified price during specified time
     periods. An option may be either an Incentive Stock Option or a
     Non-Qualified Stock Option.

          (k)  "Option Agreement" means any written agreement, contract, or
     other instrument or document evidencing an option.

          (l)  "Participant" means a person, who as an officer, employee,
     consultant or independent contractor of the Company or a Subsidiary,
     including an individual who is also a member of the Board, has been granted
     an option under the Plan.

          (m)  "Plan" means the Evans & Sutherland Computer Corporation 1998
     Stock Option Plan, as amended from time to time.

          (n)  "Retirement" means a Participant's termination of employment with
     the Company after attaining any normal or early retirement age specified in
     any pension, profit sharing or other retirement program sponsored by the
     Company or such other event designated as a Retirement by the Committee in
     an Option Agreement.

          (o)  "Stock" means the common stock of the Company and such other
     securities of the Company that may be substituted for stock pursuant to
     Article 9.

          (p)  "Subsidiary" means any corporation of which a majority of the
     outstanding voting stock or voting power is beneficially owned directly or
     indirectly by the Company.

ARTICLE 4 - ADMINISTRATION

     4.1  COMMITTEE. The Plan shall be administered by the Board or a Committee
appointed by, and which serves at the discretion of, the Board. If the Board
appoints a Committee, the Committee shall consist of at least two individuals,
each of whom qualifies as (i) a Non-Employee Director, and (ii) an "outside
director" under Code Section 162(m) and the regulations issued thereunder;
provided, however, that the Chief Executive Officer of the Company shall have
the authority to grant options to individuals who are not subject to Section 16
of the Securities Exchange Act of 1934. When the Chief Executive Officer is
acting to grant options under this Plan, solely for purposes of this Plan, the
Chief Executive Officer shall be deemed to be acting as the Board or the
Committee, as the case may be. Additionally, reference to the Committee shall
also refer to the Board if the Board does not appoint a Committee.

     4.2  ACTION BY THE COMMITTEE. A majority of the Committee shall constitute
a quorum. The acts of a majority of the members present at any meeting at which
a quorum is present and acts approved in writing by a majority of the Committee
in lieu of a meeting shall be deemed the acts of the Committee. Each member of
the Committee is entitled to, in good faith, rely or act upon any report or
other information furnished to that member by any officer or other employee of
the Company or any Subsidiary, the Company's independent certified public
accountants, or any executive compensation consultant or other professional
retained by the Company to assist in the administration of the Plan.
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     4.3  AUTHORITY OF COMMITTEE. The Committee has the exclusive power,
authority and discretion to:

          (a)  Designate Participants to receive options;

          (b)  Determine the type or types of options to be granted to each
     Participant;

          (c)  Determine the number of options to be granted and the number of
     shares of stock to which an option will relate;

          (d)  Determine the terms and conditions of any option granted under
     the Plan including but not limited to, the exercise price, grant price, or
     purchase price, any restrictions or limitations on the option, any schedule
     for lapse of forfeiture restrictions or restrictions on the exercisability
     of an option, and accelerations or waivers thereof, based in each case on
     such considerations as the Committee in its sole discretion determines;

          (e)  Determine whether, to what extent, and under what circumstances
     an option may be settled in, or the exercise price of an option may be paid
     in, cash, stock, other options, or other property, or an option may be
     canceled, forfeited, or surrendered;

          (f)  Prescribe the form of each Option Agreement, which need not be
     identical for each Participant;

          (g)  Decide all other matters that must be determined in connection
     with an option;

          (h)  Establish, adopt or revise any rules and regulations as it may
     deem necessary or advisable to administer the Plan; and

          (i)  Make all other decisions and determinations that may be required
     under the Plan or as the Committee deems necessary or advisable to
     administer the Plan.

     4.4  DECISIONS BINDING. The Committee's interpretation of the Plan, any
options granted under the Plan, any Option Agreement and all decisions and
determinations by the Committee with respect to the Plan are final, binding, and
conclusive on all parties.

ARTICLE 5 - SHARES SUBJECT TO THE PLAN

     5.1  NUMBER OF SHARES. Subject to adjustment as provided in Article 9.1
below, the maximum aggregate number of shares of stock that may be subject to
options under the Plan is 400,000. The shares may be authorized but unissued or
reacquired shares of stock.

     5.2  LAPSED OPTIONS. To the extent that an option terminates, expires or
lapses for any reason, any shares of stock subject to the option will again be
available for the grant under the Plan.

     5.3  STOCK DISTRIBUTED. Any stock distributed pursuant to an option may
consist, in whole or in part, of authorized and unissued stock, treasury stock
or stock purchased on the open market.

     5.4  LIMITATION ON NUMBER OF SHARES SUBJECT TO OPTIONS. Notwithstanding any
provision in the Plan to the contrary, and subject to the adjustment in Article
9.1, the maximum number of shares of stock with respect to one or more options
that may be granted to any one Participant during the Company's fiscal year
shall be 250,000.

ARTICLE 6 - ELIGIBILITY AND PARTICIPATION

     6.1  ELIGIBILITY. Persons eligible to participate in this Plan include all
officers, employees, and consultants or independent contractors of the Company
or a Subsidiary, as determined by the Committee, including officers, employees,
and consultants or independent contractors who are also members of the Board. In
order to assure the viability of options granted to Participants employed in
foreign countries, the Committee may provide for such special terms as it may
consider necessary or appropriate to accommodate differences in local law, tax
policy,
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or custom. Moreover, the Committee may approve such supplements to, or
amendments, restatements, or alternative versions of the Plan as it may consider
necessary or appropriate for such purposes without thereby affecting the terms
of the Plan as in effect for any other purpose; provided, however, that no such
supplements, amendments, restatements, or alternative versions shall increase
the share limitations contained in Section 5 of the Plan. For purposes of this
Plan, a change in status from (i) an Employee to a consultant or advisor, or
(ii) a consultant or advisor to an Employee will not constitute a termination of
employment.

     6.2  ACTUAL PARTICIPATION. Subject to the provisions of the Plan, the
Committee may, from time to time, select from among all eligible individuals,
those to whom options shall be granted and shall determine the nature and amount
of each option. No individual shall have any right to be granted an option under
this Plan.

ARTICLE 7 - STOCK OPTIONS

     7.1  GENERAL. The Committee is authorized to grant options to Participants
on the following terms and conditions:

          (a)  EXERCISE PRICE. The exercise price per share of stock under an
     option shall be determined by the Committee and set forth in the Option
     Agreement. It is the intention under the Plan that the exercise price for
     any option shall not be less than the Fair Market Value as of the date of
     grant; provided, however that the Committee may, in its discretion, grant
     options (other than options that are intended to be Incentive Stock
     Options) with an exercise price of less than Fair Market Value on the date
     of grant.

          (b)  TIME AND CONDITIONS OF EXERCISE. The Committee shall determine
     the time or times at which an option may be exercised in whole or in part.
     The Committee also shall determine the performance or other conditions, if
     any, that must be satisfied before all or part of an option may be
     exercised. Notwithstanding anything in the Plan to the contrary, a
     Participant's Option shall become fully vested and exercisable and any
     restrictions shall lapse once the Participant terminates employment on
     account of Retirement and such options shall remain exercisable after such
     termination of employment until the expiration of the option.

          (c)  PAYMENT. The Committee shall determine the methods by which the
     exercise price of an option may be paid, the form of payment, including,
     without limitation, cash, shares of stock (through actual tender or by
     attestation), or other property (including broker-assisted "cashless
     exercise" arrangements), and the methods by which shares of stock shall be
     delivered or deemed to be delivered to Participants.

          (d)  EVIDENCE OF GRANT. All options shall be evidenced by a written
     Option Agreement between the Company and the Participant. The Option
     Agreement shall include such provisions as may be specified by the
     Committee.

     7.2  INCENTIVE STOCK OPTIONS. Incentive Stock Options shall be granted only
to employees and the terms of any Incentive Stock Options granted under the Plan
must comply with the following additional rules:

          (a)  EXERCISE PRICE. The exercise price per share of stock shall be
     set by the Committee, provided that the exercise price for any Incentive
     Stock Option may not be less than the Fair Market Value as of the date of
     the grant.

          (b)  EXERCISE. In no event, may any Incentive Stock Option be
     exercisable for more than ten years from the date of its grant.

          (c)  LAPSE OF OPTION. An Incentive Stock Option shall lapse under the
     following circumstances:

               (1)  The Incentive Stock Option shall lapse ten years from the
          date it is granted, unless an earlier time is set in the Option
          Agreement.
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               (2)  Subject to Section 6.1, if the Participant separates from
          employment for any reason other than Disability or death, the
          Incentive Stock Option shall lapse three months following the
          Participant's termination of employment, or such other time as
          specified in the Participant's Option Agreement. Notwithstanding
          anything in the Plan to the contrary, a Participant's ISO shall become
          fully vested and exercisable and any restrictions shall lapse once the
          Participant terminates employment on account of Retirement and such
          ISO shall remain exercisable after such termination of employment
          until the expiration of the ISO; provided, however, that to the extent
          such option is not exercised within three months after such
          termination, such option shall thereafter be considered a
          Non-Qualified Stock Option. To the extent that this provision causes
          Incentive Stock Options to become first exercisable by a Participant
          in excess of the limitation in Section 7.2(d), the excess shall be
          considered Non-Qualified Stock Options.

               (3)  If the Participant terminates employment on account of
          Disability or death before the option lapses pursuant to paragraph (1)
          or (2) above, the Incentive Stock Option shall lapse, unless it is
          previously exercised, on the earlier of (i) the date on which the
          option would have lapsed had the Participant not become Disabled or
          lived and had his employment status (i.e., whether the Participant was
          employed by the Company on the date of his Disability or death or had
          previously terminated employment) remained unchanged; or (ii) 12
          months after the date of the Participant's termination of employment
          on account of Disability or death. Upon the Participant's Disability
          or death, any Incentive Stock Options exercisable at the Participant's
          Disability or death may be exercised by the Participant's legal
          representative or representatives, by the person or persons entitled
          to do so under the Participant's last will and testament, or, if the
          Participant shall fail to make testamentary disposition of such
          Incentive Stock Option or shall die intestate, by the person or
          persons entitled to receive said Incentive Stock Option under the
          applicable laws of descent and distribution.

          (d)  INDIVIDUAL DOLLAR LIMITATION. The aggregate Fair Market Value
     (determined as of the time an option is made) of all shares of stock with
     respect to which Incentive Stock Options are first exercisable by a
     Participant in any calendar year may not exceed $100,000.00 or such other
     limitation as imposed by Section 422(d) of the Code, or any successor
     provision. To the extent that Incentive Stock Options are first exercisable
     by a Participant in excess of such limitation, the excess shall be
     considered Non-Qualified Stock Options.

          (e)  TEN PERCENT OWNERS. An Incentive Stock Option shall be granted to
     any individual who, at the date of grant, owns stock possessing more than
     ten percent of the total combined voting power of all classes of stock of
     the Company only if such option is granted at a price that is not less than
     110% of Fair Market Value on the date of grant and the option is
     exercisable for no more than five years from the date of grant.

          (f)  EXPIRATION OF INCENTIVE STOCK OPTIONS. No option of an Incentive
     Stock Option may be made pursuant to this Plan after the tenth anniversary
     of the Effective Date.

          (g)  RIGHT TO EXERCISE. During a Participant's lifetime, an Incentive
     Stock Option may be exercised only by the Participant.

ARTICLE 8 - PROVISIONS APPLICABLE TO OPTIONS

     8.1  EXCHANGE PROVISIONS. The Committee may at any time offer to exchange
or buy out any previously granted option for a payment in cash, stock, or
another option (subject to Section 8.1), based on the terms and conditions the
Committee determines and communicates to the Participant at the time the offer
is made.

     8.2  TERM OF OPTION. The term of each option shall be for the period as
determined by the Committee, provided that in no event shall the term of any
Incentive Stock Option exceed a period of ten years from the date of its grant.

     8.3  FORM OF PAYMENT FOR OPTIONS. Subject to the terms of the Plan and any
applicable law or Option Agreement, payments or transfers to be made by the
Company or a Subsidiary on the grant or exercise of an option may be made in
such forms as the Committee determines at or after the time of grant, including
without
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limitation, cash, stock, other options, or other property, or any combination,
and may be made in a single payment or transfer, in installments, or on a
deferred basis, in each case determined in accordance with rules adopted by, and
at the discretion of, the Committee.

     8.4  LIMITS ON TRANSFER. No right or interest of a Participant in any
option may be pledged, encumbered, or hypothecated to or in favor of any party
other than the Company or a Subsidiary, or shall be subject to any lien,
obligation, or liability of such Participant to any other party other than the
Company or a Subsidiary. Except as otherwise provided by the Committee, no
option shall be assignable or transferable by a Participant other than by will
or the laws of descent and distribution.

     8.5  BENEFICIARIES. Notwithstanding Section 8.4, a Participant may, in the
manner determined by the Committee, designate a beneficiary to exercise the
rights of the Participant and to receive any distribution with respect to any
option upon the Participant's death. A beneficiary, legal guardian, legal
representative, or other person claiming any rights under the Plan is subject to
all terms and conditions of the Plan and any Option Agreement applicable to the
Participant, except to the extent the Plan and Option Agreement otherwise
provide, and to any additional restrictions deemed necessary or appropriate by
the Committee. If the Participant is married, a designation of a person other
than the Participant's spouse as his beneficiary with respect to more than 50
percent of the Participant's interest in the option shall not be effective
without the written consent of the Participant's spouse. If no beneficiary has
been designated or survives the Participant, payment shall be made to the person
entitled thereto under the Participant's will or the laws of descent and
distribution. Subject to the foregoing, a beneficiary designation may be changed
or revoked by a Participant at any time provided the change or revocation is
filed with the Committee.

     8.6  STOCK CERTIFICATES. All stock certificates delivered under the Plan
are subject to any stop-transfer orders and other restrictions as the Committee
deems necessary or advisable to comply with Federal or state securities laws,
rules and regulations and the rules of any national securities exchange or
automated quotation system on with the stock is listed, quoted, or traded. The
Committee may place legends on any stock certificate to reference restrictions
applicable to the stock.

     8.7  TENDER OFFERS. In the event of a public tender for all or any portion
of the stock, or in the event that a proposal to merge, consolidate, or
otherwise combine with another company is submitted for stockholder approval,
the Committee may in its sole discretion declare previously granted options to
be immediately exercisable. To the extent that this provision causes Incentive
Stock Options to exceed the dollar limitation set forth in Section 7.2(d), the
excess options shall be deemed to be Non-Qualified Stock Options.

     8.8  ACCELERATION UPON A CHANGE OF CONTROL. If a Change of Control occurs,
all outstanding options shall become fully exercisable. To the extent that this
provision causes Incentive Stock Options to exceed the dollar limitation set
forth in Section 7.2(d), the excess options shall be deemed to be Non-Qualified
Stock Options. Upon, or in anticipation of, such an event, the Committee may
cause every option outstanding hereunder to terminate at a specific time in the
future and shall give each Participant the right to exercise options during a
period of time as the Committee, in its sole and absolute discretion, shall
determine, except in the event that the surviving or resulting entity agrees to
assume the options on terms and conditions that substantially preserve the
Participant's rights and benefits of the option then outstanding.

ARTICLE 9 - CHANGES IN CAPITAL STRUCTURE

     9.1  GENERAL. In the event a stock dividend is declared upon the stock, the
shares of stock then subject to each option (and the number of shares subject
thereto) shall be increased proportionately without any change in the aggregate
purchase price therefor. In the event the stock shall be changed into or
exchanged for a different number or class of shares of stock or of another
corporation, whether through reorganization, recapitalization, stock split-up,
combination of shares, merger or consolidation, there shall be substituted for
each such share of stock then subject to each option the number and class of
shares of stock into which each outstanding share of stock shall be so
exchanged, all without any change in the aggregate purchase price for the shares
then subject to each option.
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ARTICLE 10 - AMENDMENT, MODIFICATION AND TERMINATION

     10.1 AMENDMENT, MODIFICATION AND TERMINATION. With the approval of the
Board, at any time and from time to time, the Committee may terminate, amend or
modify the Plan; provided, however, that to the extent necessary and desirable
to comply with any applicable law, regulation, or stock exchange rule, the
Company shall obtain shareholder approval of any Plan amendment in such a manner
and to such a degree as required.

     10.2 OPTIONS PREVIOUSLY GRANTED. No termination, amendment, or modification
of the Plan shall adversely affect in any material way any option previously
granted under the Plan, without the written consent of the Participant.

ARTICLE 11 - GENERAL PROVISIONS

     11.1 NO RIGHTS TO OPTIONS. No Participant, employee, or other person shall
have any claim to be granted any option under the Plan, and neither the Company
nor the Committee is obligated to treat Participants, employees, and other
persons uniformly.

     11.2 NO STOCKHOLDERS RIGHTS. No option gives the Participant any of the
rights of a stockholder of the Company unless and until shares of stock are in
fact issued to such person in connection with such option.

     11.3 WITHHOLDING. The Company or any Subsidiary shall have the authority
and the right to deduct or withhold, or require a Participant to remit to the
Company, an amount sufficient to satisfy Federal, state, and local taxes
(including the Participant's FICA obligation) required by law to be withheld
with respect to any taxable event arising as a result of this Plan.

     11.4 NO RIGHT TO EMPLOYMENT. Nothing in the Plan or any Option Agreement
shall interfere with or limit in any way the right of the Company or any
Subsidiary to terminate any Participant's employment at any time, nor confer
upon any Participant any right to continue in the employ of the Company or any
Subsidiary.

     11.5 UNFUNDED STATUS OF OPTIONS. The Plan is intended to be an "unfunded"
plan for incentive compensation. With respect to any payments not yet made to a
Participant pursuant to an option, nothing contained in the Plan or any Option
Agreement shall give the Participant any rights that are greater than those of a
general creditor of the Company or any Subsidiary.

     11.6 INDEMNIFICATION. To the extent allowable under applicable law, each
member of the Committee or of the Board shall be indemnified and held harmless
by the Company from any loss, cost, liability, or expense that may be imposed
upon or reasonably incurred by such member in connection with or resulting from
any claim, action, suit, or proceeding to which he or she may be a party or in
which he or she may be involved by reason of any action or failure to act under
the Plan and against and from any and all amounts paid by him or her in
satisfaction of judgment in such action, suit, or proceeding against him or her
provided he or she gives the Company an opportunity, at its own expense, to
handle and defend the same before he or she undertakes to handle and defend it
on his or her own behalf. The foregoing right of indemnification shall not be
exclusive of any other rights of indemnification to which such persons may be
entitled under the Company's Articles of Incorporation or By-Laws, as a matter
of law, or otherwise, or any power that the Company may have to indemnify them
or hold them harmless.

     11.7 RELATIONSHIP TO OTHER BENEFITS. No payment under the Plan shall be
taken into account in determining any benefits under any pension, retirement,
savings, profit sharing, group insurance, welfare or other benefit plan of the
Company or any Subsidiary.

     11.8 EXPENSES. The expenses of administering the Plan shall be borne by the
Company and its Subsidiaries.

     11.9 TITLES AND HEADINGS. The titles and headings of the Sections in the
Plan are for convenience of reference only, and in the event of any conflict,
the text of the Plan, rather than such titles or headings, shall control.
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     11.10 FRACTIONAL SHARES. No fractional shares of stock shall be issued and
the Committee shall determine, in its discretion, whether cash shall be given in
lieu of fractional shares or whether such fractional shares shall be eliminated
by rounding up.

     11.11 SECURITIES LAW COMPLIANCE. With respect to any person who is, on the
relevant date, obligated to file reports under Section 16 of the 1934 Act,
transactions under this Plan are intended to comply with all applicable
conditions of Rule 16b-3 or its successors under the 1934 Act. To the extent any
provision of the Plan or action by the Committee fails to so comply, it shall be
void to the extent permitted by law and voidable as deemed advisable by the
Committee.

     11.12 GOVERNMENT AND OTHER REGULATIONS. The obligation of the Company to
make payment of options in stock or otherwise shall be subject to all applicable
laws, rules, and regulations, and to such approvals by government agencies as
may be required. The Company shall be under no obligation to register under the
Securities Act of 1933, as amended (the "1933 Act"), any of the shares of stock
paid under the Plan. If the shares paid under the Plan may in certain
circumstances be exempt from registration under the 1933 Act, the Company may
restrict the transfer of such shares in such manner as it deems advisable to
ensure the availability of any such exemption.

     11.13 GOVERNING LAW. The Plan and all Option Agreements shall be construed
in accordance with and governed by the laws of the State of Utah.

Adopted May 21, 1998

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                                   AMENDMENT 1

                 TO THE EVANS & SUTHERLAND COMPUTER CORPORATION
                             1998 STOCK OPTION PLAN

     On April 13, 1998, Evans & Sutherland Computer Corporation (the
"Corporation") adopted the Evans & Sutherland Computer Corporation 1998 Stock
Option Plan (the "Plan"), which was approved by the shareholders on May 21,
1998. By this instrument, the Corporation desires to amend the Plan effective as
of May 20, 1999.

     1.   This Amendment shall amend only those provisions specified herein and
those provisions amended hereby shall remain in full force and effect.

     2.   Section 5.1 of the Plan is hereby amended and restated in its entirety
as follows:

          NUMBER OF SHARES. Subject to adjustment as provided in Article 9.1
          below, the maximum aggregate number of shares of stock that may be
          subject to options under the Plan is 850,000. The shares may be
          authorized but unissued or reacquired shares of stock.

     3.   This Amendment shall be effective May 20, 1999.

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                                   AMENDMENT 2

                 TO THE EVANS & SUTHERLAND COMPUTER CORPORATION
                             1998 STOCK OPTION PLAN

     On April 13, 1998, Evans & Sutherland Computer Corporation (the
"Corporation") adopted the Evans & Sutherland Computer Corporation 1998 Stock
Option Plan (the "Plan"), which was approved by the shareholders on May 21,
1998, and amended effective as of May 20, 1999. By this instrument, the
Corporation desires to amend the Plan effective as of May 17, 2000.

     1.   This Amendment shall amend only those provisions specified herein and
those provisions amended hereby shall remain in full force and effect.

     2.   Section 4.3 of the Plan is amended by adding the following sentence to
the end thereof:

          Except as provided in Section 9.1, neither the Committee, nor the
          Board, shall have the authority or discretion to adjust the exercise
          price of outstanding Options granted under the Plan, whether through
          an amendment of an existing Option Agreement or through the
          cancellation and replacement of outstanding Options.

     3.   Section 5.1 of the Plan is hereby amended and restated in its entirety
as follows:

          NUMBER OF SHARES. Subject to adjustment as provided in Article 9.1
          below, the maximum aggregate number of shares of stock that may be
          subject to options under the Plan is 1,250,000. The shares may be
          authorized but unissued or reacquired shares of stock.

     4.   This Amendment shall be effective May 17, 2000.<Page>

                                   EXHIBIT 4.1

                        1991 EMPLOYEE STOCK PURCHASE PLAN

                                       OF

                     EVANS & SUTHERLAND COMPUTER CORPORATION

1.   PURPOSES

     The purposes of this Plan are to advance the interests of Evans &
Sutherland Computer Corporation (the "Company") and to further its growth and
development by encouraging and assisting employees of the Company and its
subsidiaries to acquire a personal and proprietary interest in the endeavor
through the purchase of its capital stock. It is also a primary goal of this
Plan to make the purchase of the stock convenient and economical to the
employee.

     The Company intends to establish and administer this Plan as a Plan other
than one which is a qualified employee stock purchase Plan under any of the
provisions of the Internal Revenue Code of 1986, as amended, or which is subject
to any of the provisions of the Employees' Retirement Income Security Act of
1974 ("ERISA").

2.   ELIGIBILITY

     Any employee of the Company or any wholly-owned subsidiary of the Company
shall be eligible to participate in this Plan.

3.   ELECTION TO PARTICIPATE

     Each eligible employee who elects to participate in this Plan shall
indicate his/her intention to acquire stock by submitting a properly completed
"Participation Election & Payroll Deduction Authorization under Employee Stock
Purchase Plan" form (the "Participation Form") to the Company payroll office.
The Participation Form shall be deemed "filed" when received by the payroll
office.

     The filing of the Participation Form constitutes, until revoked or amended,
both an authorization to the Company to make payroll deductions under this Plan
and a contract with the Company to purchase at some future period or periods the
whole number of shares which can be purchased by accumulated payroll deductions.

     Any employee who does not file a Participation Form in the manner provided
has no rights under this Plan.

4.   PLAN MECHANICS

     Payroll deductions will accumulate in a "stock purchase account"
established for each participant. Monies accumulated therein, when sufficient,
allow the participant to acquire a share (or shares) of the Company's stock at a
price equal to eighty-five percent (85%) of the
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closing bid price for the stock (on the last day of the pay period) as quoted by
the National Association of Security Dealer Automated Quotation System
("NASDAQ").

     Future payroll deductions continue to accumulate in stock purchase accounts
until sufficient to be applied towards the acquisition of an additional share
(or shares) of stock.

     In addition to bearing the administrative and other associated expenses of
operating this Plan, the Company is deemed to contribute the remaining fifteen
percent (15%) of the total dollars actually needed before a share (or shares) of
stock can be issued under this Plan.

5.   PAYROLL DEDUCTIONS

     Stock can only be purchased under this Plan through the medium of payroll
deductions.

     A.   Minimum Deduction.

          An employee electing (or amending an election) to participate in this
          Plan must authorize a payroll deduction of at least $4.00 per week.

     B.   Maximum Deduction.

          No employee may authorize for any pay period a deduction in excess of
          ten percent (10%) of his/her gross pay for the applicable pay period.

     C.   When Deductions Begin.

          Payroll deductions shall begin in the first pay period following the
          one in which the Company receives the employee's Participation Form,
          and shall continue for the number of weeks indicated on such form, or
          until the pay period in which the participant elects to revoke his/her
          election or until this Plan is terminated, whichever occurs first.

     D.   Cessation of Deductions.

          When and if deductions for any reason cease, such cessation shall be
          treated as if the participant revoked his/her election to participate
          on the date of the last authorized deduction.

6.   AMENDMENT OR TERMINATION OF PARTICIPATION

     A.   Amended Elections.

          Participants are free at any time to amend an election provided the
          amendment is also within the payroll deduction limitations found
          elsewhere in this Plan. Any such election shall be effective as of the
          first pay period following the one in which the Company receives such
          an amendment.

     B.   Revoked Elections.
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          At any time during the term of this Plan a participant may revoke
          his/her election and terminate participation in this Plan. Upon such
          revocation, the participant shall make the following election in
          writing in regard to any balance then remaining in his/her stock
          purchase account:

          (1)  Direct the Company to refund such balance in cash; or

          (2)  Pay to the Company (in cash or by certified or bank cashier's or
               teller's check or by money order) an amount sufficient to
               complete the acquisition of the next whole share at a purchase
               price of eighty-five percent (85%) of the closing NASDAQ bid
               price for the stock on the day of revocation.

               If the participant fails to make the election provided for in
               this subsection within seven (7) calendar days of the triggering
               event, he/she will be deemed to have elected the cash refund
               alternative and will be refunded the balance of his/her stock
               purchase account.

               PARTICIPANTS SHALL NOT EARN OR RECEIVE INTEREST ON OR INCOME FROM
               ANY PAYROLL DEDUCTIONS SUBJECT TO THIS STOCK PURCHASE PLAN.

     C.   Termination of Employment.

          The termination of the employment of a participating employee shall be
          treated under this Plan as if the employee had, on the date of such
          termination, revoked his/her election to participate.

7.   PRIVILEGES OF STOCK OWNERSHIP

     The completion of each whole share purchase under this Plan shall entitle
the purchaser to all of the privileges of stock ownership (dividends, voting
rights, liquidation rights, etc.).

     All shares issued under this Plan shall be registered with the Securities
and Exchange Commission and the respective states, except those states in which
an applicable exemption is available.

8.   DELIVERY OF SHARE CERTIFICATES

     The Company shall issue and deliver, upon demand and as soon as
practicable, share certificates to any ongoing participant who has five (5) or
more unissued shares purchased under this Plan. A participant whose interest in
the Plan has terminated for any reason shall have, as soon as is practicable,
share certificates issued to him/her for the shares purchased under this Plan
but yet unissued.

     As indicated elsewhere in this Plan, no fractional shares may be purchased
or issued under this Plan.

9.   TRANSFER OR HYPOTHECATION OF SHARES
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     No attempted or effectuated transfer or hypothecation of shares purchased
under this Plan shall be binding on the Company or on its transfer agent unless
and until the applicable share certificates have been issued or the Company has
otherwise consented in writing.

10.  STOCK SUBJECT TO THE PLAN

     The stock to be offered under this Plan shall be registered shares of the
Company's Common Stock ($0.20 par value) (herein called the "stock" or "shares")
and the aggregate amount of stock to be purchased under this Plan shall not
exceed (subject to adjustments as provided in this Section) 500,000 shares. The
stock may be, in whole or in part, as the Board of Directors of the Company
shall from time-to-time determine, authorized and unissued shares or issued
shares which shall have been reacquired by the Company.

     If the outstanding shares of the stock of the Company are changed into, or
exchanged for a different number or kind of shares or securities of the Company
through reorganization, merger, recapitalization, reclassification, stock split,
stock dividend, stock consolidation or otherwise, an appropriate and
proportionate adjustment shall be made in the kind of shares available for
purchase under this Plan.

     Upon the dissolution or liquidation of the Company, or upon a
reorganization, merger or consolidation of the Company with one or more
corporations as a result of which the Company is not the surviving corporation,
the Plan shall terminate unless provision be made in connection with such
transaction for the assumption of the rights and duties under this Plan but
substituting the stock of a successor corporation, or a parent or subsidiary
thereof.

11.  REPORTING

     Reports to each participant of his/her unissued shares under this Plan and
of the dollar balance in his/her stock purchase account shall be made at least
annually. Other figures which are deemed appropriate by the Plan administrators
may be periodically reported to each participant by the Company.

     The Company shall also report to each participant, concurrent with the
issuance of any and all shares, the tax basis for each purchased share for
federal and state tax purposes.

12.  ADMINISTRATION

     This Plan shall be administered by the Board of Directors of the Company.
Subject to the express provisions of the Plan, the Board of Directors shall have
the authority to construe and interpret the Plan and to define the terms used
herein, to prescribe, amend and rescind rules and regulations relating to the
administration of the Plan, and to make all other determinations necessary or
advisable for the administration of the Plan. The determinations of the Board of
Directors on the matters referred to in this section shall be conclusive.

13.  FUND INVESTMENT

     The Plan Administrators may temporarily invest the funds of the Plan (which
at any point in time consist of the aggregate of all the balances in stock
purchase accounts) in short-term obligations such as savings accounts, bank
certificates of deposit, governmental securities, high-grade corporate
securities (other than those of the Company) or similar securities, or in any
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combination of the foregoing. Plan funds shall in no event be commingled with
any other funds or revenue of the Company, or be used by the Company for any
purpose other than the purchase of stock according to this Plan.

     Any interest or income earned from the investments of the preceding
paragraph shall be used by the Plan Administrators to offset costs of the Plan
administration and operation.

14.  AMENDMENT AND TERMINATION

     The Board of Directors of the Company may at any time suspend, amend or
terminate this Plan if they deem such advisable in the best interests of the
Company.

15.  EFFECTIVE DATE OF THE PLAN

     This Plan shall be effective concurrent with the effective date of the
registration statement to be filed with the Securities and Exchange Commission
for the shares to be offered hereunder.

16.  DURATION OF PLAN

     This Plan shall expire on February 21, 2001.

17.  PREDECESSOR PLAN

     This Plan is intended to supersede the 1986 Employee Stock Purchase Plan of
Evans & Sutherland Computer Corporation (the "1986 Plan"), and if, on the
effective date of this Plan, there are any shares which the Company is obligated
to issue under the 1986 Plan, the obligations of the Company under the 1986 Plan
shall be subsumed with and into this Plan.

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                                  AMENDMENT TO

                        1991 EMPLOYEE STOCK PURCHASE PLAN

                   OF EVANS & SUTHERLAND COMPUTER CORPORATION

     Evans & Sutherland Computer Corporation (the "Company") previously approved
the adoption of the 1991 Employee Stock Purchase Plan of Evans & Sutherland
Computer Corporation (the "Plan") to encourage stock ownership by eligible
employees. By this instrument, the Company desires to amend the Plan to extend
the term of the Plan for an additional five-year period.

     1.   The provisions of this Amendment shall be effective as of February 21,
2001.

     2.   Section 16 of the Plan is hereby amended and restated in its entirety
as follows:

               16.  DURATION OF PLAN

                         This Plan shall expire on February 20, 2006.

     3.   This First Amendment shall amend only the provisions of the Plan as
set forth herein. Those provisions of the Plan not expressly amended hereby
shall be considered in full force and effect.

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