THIS  SECURITY HAS NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS
AMENDED (THE  "SECURITIES  ACT"),  OR THE SECURITIES  LAWS OF ANY STATE,  AND IS
BEING  OFFERED  AND  SOLD  PURSUANT  TO  AN  EXEMPTION  FROM  THE   REGISTRATION
REQUIREMENTS  OF THE SECURITIES ACT AND SUCH LAWS. THIS SECURITY MAY NOT BE SOLD
OR TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE  REGISTRATION STATEMENT UNDER THE
SECURITIES  ACT OR  PURSUANT TO AN  AVAILABLE  EXEMPTION  FROM THE  REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT OR SUCH OTHER LAWS.

[THIS NOTE WILL BE CONSIDERED TO HAVE BEEN ISSUED WITH ORIGINAL  ISSUE  DISCOUNT
("OID") FOR PURPOSES OF SECTIONS  1271 ET. SEQ. OF THE INTERNAL  REVENUE CODE OF
1986,  AS  AMENDED.  THE ISSUE  DATE OF THIS NOTE IS  SEPTEMBER  18,  2001.  FOR
INFORMATION  REGARDING  THE ISSUE  PRICE,  AMOUNT OF OID PER $1,000 OF PRINCIPAL
AMOUNT AND YIELD TO MATURITY OF THIS NOTE FOR PURPOSES OF THE OID RULES,  PLEASE
CONTACT ANDREW P. SAVADELIS AT eMAGIN CORPORATION.




                        4% SERIES A CONVERTIBLE DEBENTURE
                             Due September 18, 2004

$3,000,000                                                    September 18, 2001

No. 1

          EMAGIN  CORPORATION,  a Delaware  corporation with principal executive
offices  located  at 2070  Route 52,  Hopewell  Junction,  NY  12533,  for value
received, hereby promises to pay to the Holder (as defined below), or such other
Person upon order of the Holder,  on September 18, 2004 (the  "Maturity  Date"),
the  principal  sum of Three Million  Dollars  ($3,000,000)  and to pay interest
thereon from the date of original  issuance (or the most recent interest payment
date to which  interest has been paid) upon,  with respect to all or any portion
of this  Debenture,  the  earlier  of the  date  of  prepayment,  conversion  or
redemption of all or such portion of this Debenture  (each an "Interest  Payment
Due Date" and collectively, the "Interest Payment Due Dates"), at the rate of 4%
per annum (the "Debenture  Interest  Rate"),  until all of the principal of this
Debenture  has  been  paid in full or duly and  irrevocably  provided  for.  The
interest payable on any Interest Payment Due Date shall be paid to the Holder at
the  close of  business  on the  applicable  Interest  Payment  Due Date and all
interest  payable on the Principal  Amount of this Debenture shall be calculated
on the basis of a 360-day  year for the actual  number of days  elapsed.  At the
option of the  Company,  interest  payable from time to time may be paid through
the  delivery  of duly  and  validly  authorized  and  issued,  fully  paid  and
non-assessable,  freely tradeable shares of Common Stock, valued at the Interest
Market Price.



The Common  Stock to be  delivered in lieu of cash  interest  payments  shall be
registered  for  resale  in  the  Registration  Statement  (as  defined  in  the
Registration Rights Agreement) to be filed by the Company to register the Common
Stock  deliverable  upon  conversion  of  the  Debenture,  as set  forth  in the
Registration  Rights  Agreement.   Notwithstanding  the  foregoing,  until  such
Registration  Statement has been declared  effective under the Securities Act by
the SEC, payment of interest on the Debenture shall be in cash.


                                    ARTICLE 1
                                   DEFINITIONS

          Section 1.1  Definitions.  The terms defined in this Article  whenever
used in this Debenture have the following respective meanings:

          (b)  "Affiliate"  has the meaning  ascribed to such term in Rule 12b-2
under the Securities Exchange Act of 1934, as amended.

          (c) "Amex" means the American Stock Exchange.

          (d) "Bankruptcy Code" means the United States Bankruptcy Code of 1986,
as amended (11 U.S.C.ss.ss. 101 et seq.).

          (e) "Business Day" means a day other than Saturday,  Sunday or any day
on which banks  located in the state of New York are  authorized or obligated to
close.

          (f) "Capital  Shares"  means the Common Shares and any other shares of
any other class or series of capital stock,  whether now or hereafter authorized
and however designated,  which have the right to participate in the distribution
of earnings and assets (upon  dissolution,  liquidation  or  winding-up)  of the
Company.

          (g)  "Closing  Date" means shall have the meaning set forth in Section
I.B of the Securities Purchase Agreement.

          (h)  "Common  Shares" or  "Common  Stock"  means  shares of the common
stock, par value $.001 per share, of the Company.

          (i)  "Common  Stock  Issued At  Redemption/Conversion"  when used with
reference to the securities issuable upon redemption or conversion,  as the case
may be, of this Debenture,  means all Common Shares now or hereafter Outstanding
and  securities of any other class or series into which the Debenture  hereafter
shall have been changed or  substituted,  whether now or  hereafter  created and
however designated.

          (j) "Company" means eMagin Corporation,  a Delaware  corporation,  and
any successor or resulting corporation by way of merger, consolidation,  sale or
exchange of all or substantially all of the Company's assets, or otherwise.

          (k) "Conversion" or "conversion" means the repayment by the Company of
the Principal  Amount of this  Debenture (and to the extent the Holder elects as
permitted  by

                                      -2-


Section 3.2  hereof,  accrued and unpaid  interest  thereon) by the  delivery of
Common  Stock on the terms  provided  in  Section  3.2  hereof,  and  "convert,"
"converted," "convertible" and like words shall have a corresponding meaning.

          (l) "Conversion Date" means any day on which all or any portion of the
Principal  Amount  of  this  Debenture  is  converted  in  accordance  with  the
provisions hereof.

          (m)  "Conversion  Price"  on  any  date  of  determination  means  the
applicable price for the conversion of this Debenture into Common Shares on such
day as set forth in Section 3.1.

          (n)  "Current  Market  Price" means on any date of  determination  the
closing  price  of a Common  Share in the  regular  day  session  on such day as
reported on Amex if quoted or listed or  admitted to trading on Amex;  provided,
if such  security is not listed or  admitted to trading on Amex,  as reported on
the  principal  national  security  exchange or  quotation  system on which such
security is quoted or listed or admitted to trading, or, if not quoted or listed
or admitted to trading on any national  securities exchange or quotation system,
the closing price of such security on the over-the-counter market in the regular
day session on the day in question  as  reported by  Bloomberg  LP, or a similar
generally accepted  reporting service,  as the case may be. If such security has
no quotes or listing as defined in this section 1.1 (n), then the Current Market
Price  shall be the  price  per  Common  Share on any date of  determination  as
determined by an independent  third party  appointed by mutual  agreement of the
Company and the Holder.

          (o)  "Debenture"  or  "Debentures"  means this 4% Series A Convertible
Debenture  due  September  18,  2004 of the  Company or such  other  convertible
subordinated  debentures or Debentures exchanged therefor as provided in Section
2.1.

          (q) "Debenture Interest Rate" has the meaning set forth in the opening
paragraph hereof.

          (o) "Default  Interest Rate" shall be equal to the Debenture  Interest
Rate plus an additional 2% per annum.

          (r) "Event of Default" has the meaning set forth in Section 6.1.

          (s) "Fixed Price" shall have the meaning assigned such term in Section
3.1.

          (t) "Holder"  means SK  Corporation,  any  successor  thereto,  or any
Person to whom this Debenture is subsequently transferred in accordance with the
provisions hereof.

          (u) "Interest Market Price" per Common Share means the volume weighted
average of the closing  prices of the Common  Shares as reported on Amex for the
ten (10) Trading Days on immediately  preceding the applicable  Interest Payment
Due Date if quoted or listed or admitted to trading on Amex;  provided  that, if
such  security  is not listed or  admitted to trading on the Amex as reported on
the principal national security exchange or quotation system (closing bid prices
in the case of a quotation system) on which such security is quoted or listed or
admitted to  trading,  or, if not quoted or listed or admitted to trading on any
national  securities  exchange or quotation system,  the average of such closing
prices on the  over-the-counter  market

                                      -3-


as reported by Bloomberg LP or a similar generally  accepted  reporting service,
as the case may be, for the ten (10)  Trading  Days  immediately  preceding  the
applicable  Interest Payment Due Date. If such security has no quotes or listing
as defined in this section 1.1 (u), then the Interest  Market Price shall be the
price  per  Common  Share  on any  date of  determination  as  determined  by an
independent  third party  appointed  by mutual  agreement of the Company and the
Holder.

          (v)  "Interest  Payment  Due  Date" has the  meaning  set forth in the
opening paragraph hereof.

          (w)  "liability" of any Person means (in each case,  whether with full
or limited recourse) any indebtedness,  liability,  obligation, covenant or duty
binding upon,  or any term or condition to be observed by or binding upon,  such
Person  or any of its  assets  of any kind,  nature  or  description,  direct or
indirect,  absolute or  contingent,  due or not due,  contractual  or  tortious,
liquidated or  unliquidated,  whether arising under contract,  applicable law or
otherwise,  whether  now  existing  or  hereafter  arising,  and whether for the
payment of money or the performance or non-performance of any act.

          (z) "Market Price" per Common Share means the volume weighted  average
of the closing  prices of the Common Shares as reported on Amex for the ten (10)
Trading  Days are  reported  during  any  Valuation  Period;  provided,  if such
security  is not  listed or  admitted  to trading on Amex,  as  reported  on the
principal  national security exchange or quotation system on which such security
is quoted  or listed or  admitted  to  trading,  or, if not  quoted or listed or
admitted to trading on any national securities exchange or quotation system, the
closing  price of such  security  on the  over-the-counter  market on the day in
question as reported by Bloomberg LP, or a similar generally  accepted reporting
service, for the ten (10) Trading Days are reported during any Valuation Period.
If such  security  has no quotes or listing as defined in this  section 1.1 (z),
then  the  Market  Price  shall be the  price  per  Common  Share on any date of
determination  as determined by an independent  third party  appointed by mutual
agreement of the Company and the Holder.

          (aa)"Maturity Date" has the meaning set forth in the opening paragraph
hereof.

          (bb)"Maximum Rate" has the meaning set forth in Section 6.3.

          (cc)"Optional  Prepayment Price" means, with respect to any redemption
of this  Debenture by the Company  pursuant to Section 3.5 prior to the Maturity
Date,  an amount equal to one hundred and five percent  (105%) of the  Principal
Amount of this Debenture being prepaid.

          (dd)  "Outstanding"  when used  with  reference  to  Common  Shares or
Capital Shares (collectively, "Shares") means, on any date of determination, all
issued and outstanding  Shares, and includes all such Shares issuable in respect
of outstanding scrip or any certificates  representing  fractional  interests in
such Shares;  provided,  however,  that any such Shares  directly or  indirectly
owned or held by or for the  account  of the  Company or any  Subsidiary  of the
Company shall not be deemed "Outstanding" for purposes hereof.

                                      -4-


          (ee)"Person"  means an individual,  a corporation,  a partnership,  an
association,   a  limited  liability   company,   an   unincorporated   business
organization,  a trust or other entity or  organization,  and any  government or
political subdivision or any agency or instrumentality thereof.

          (ff)"Principal  Amount"  means,  for  any  date  of  calculation,  the
principal sum set forth in the first  paragraph of this Debenture (but only such
principal  amount  as to  which  the  Holder  has not  theretofore  furnished  a
Redemption/Conversion Notice in compliance with Section 3.2).

          (gg)"Redemption" or "redemption" means the repayment by the Company of
the  Principal  Amount of this  Debenture  and any accrued  and unpaid  interest
thereon in cash in advance of the Maturity Date on the terms provided in Section
3.2 hereof, and "redeem,"  "redeemed,"  "redeemable" and like words shall have a
corresponding meaning.

          (hh)"Redemption Date" means any day on which all or any portion of the
Principal  Amount of this Debenture is converted or redeemed in accordance  with
the provisions hereof.

          (ii)"Redemption/Conversion   Notice"   means  a   written   notice  of
conversion or redemption substantially in the form annexed hereto as Exhibit A.

          (jj)"Registration  Rights  Agreement" means that certain  Registration
Rights  Agreement  dated  September  18,  2001,   between  the  Company  and  SK
Corporation, as the same may be amended from time to time.

          (kk)"SEC" means the United States Securities and Exchange Commission.

          (ll)  "Securities  Act" means the  Securities Act of 1933, as amended,
and the rules and  regulations  of the SEC  thereunder,  all as in effect at the
time.

          (mm)"Securities  Purchase  Agreement"  means that  certain  Securities
Purchase   Agreement  dated  September  18,  2001,  among  the  Company  and  SK
Corporation, as the same may be amended from time to time.

          (nn)"Stock  Purchase  Warrant"  means the warrant to  purchase  Common
Stock issued by the Company to the Holder  pursuant to the  Securities  Purchase
Agreement as the same may be amended from time to time.

          (oo)"Subsidiary"  means  any  entity  of  which  securities  or  other
ownership  interests  having  ordinary  voting  power to elect a majority of the
board of directors  or other  persons  performing  similar  functions  are owned
directly or indirectly by the Company.

          (pp)"Trading  Day" means any day on which (a)  purchases  and sales of
securities  authorized for quotation on Amex are reported thereon,  (b) no event
which  results in a material  suspension  or limitation of trading of the Common
Shares on Amex has  occurred  and (c) at least  one  trade of  Common  Shares is
reported on Amex.

                                      -5-


          (qq)"Valuation   Period"   means  the  ten  (10)  Trading  Day  period
immediately  preceding,  a Put Exercise or Redemption Date, the date a Notice of
Optional Prepayment is sent or the Interest Payment Due Date, as applicable.

          All  references  to "cash" or "$" herein  mean  currency of the United
States of America.


                                    ARTICLE 2
                             EXCHANGES AND TRANSFER

          Section 2.1 Exchange and  Registration of Transfer of Debentures.  The
Holder may, at its option,  surrender this Debenture at the principal  executive
offices  of the  Company  and  receive  in  exchange  therefor  a  Debenture  or
Debentures,  each in the  denomination  of $500,000  or an integral  multiple of
$100,000 in excess thereof,  dated as of the date of this Debenture (which shall
accrue  interest  from the most  recent  Interest  Payment  Due Date on which an
interest payment was made in full), and, subject to Section 4.2, payable to such
Person or order as may be  designated by such Holder.  The  aggregate  Principal
Amount of the Debenture or Debentures  exchanged in accordance with this Section
2.1 shall equal the aggregate  unpaid  Principal  Amount of this Debenture as of
the date of such surrender;  provided,  however, that upon any exchange pursuant
to this  Section  2.1 there shall be filed with the Company the name and address
for all purposes  hereof of the Holder or Holders of the Debenture or Debentures
delivered in such  exchange.  The debenture  exchanged in  accordance  with this
Section  2.1 shall be in  substantially  the same form as this  Debenture.  This
Debenture,  when  presented  for  registration  of transfer  or for  exchange or
conversion,  shall (if so  required  by the  Company)  be duly  endorsed,  or be
accompanied by a written instrument of transfer in form reasonably  satisfactory
to the  Company  duly  executed,  by the  Holder  duly  authorized  in  writing.
Notwithstanding  the above,  the Holder shall not transfer this Debenture or any
rights  hereunder to any person or entity which is engaged in a business that in
the reasonable judgment of the Company is in competition with the Company.

          Section 2.2 Loss,  Theft,  Destruction  of Debenture.  Upon receipt of
evidence  satisfactory  to  the  Company  of the  loss,  theft,  destruction  or
mutilation  of this  Debenture  and,  in the  case of any  such  loss,  theft or
destruction,  upon receipt of indemnity or security  reasonably  satisfactory to
the  Company,  or,  in the  case of any  such  mutilation,  upon  surrender  and
cancellation  of the entirety of this Debenture,  the Company shall make,  issue
and deliver, in lieu of such lost, stolen,  destroyed or mutilated Debenture,  a
new  Debenture  of like tenor and unpaid  Principal  Amount dated as of the date
hereof (which shall accrue  interest from the most recent  Interest  Payment Due
Date on which an interest  payment was made in full).  This  Debenture  shall be
held and owned upon the express  condition  that the  provisions of this Section
2.2 are exclusive  with respect to the  replacement  of a mutilated,  destroyed,
lost or  stolen  Debenture  and shall  preclude  any and all  other  rights  and
remedies notwithstanding any law or statute existing or hereafter enacted to the
contrary  with respect to the  replacement  of negotiable  instruments  or other
securities without the surrender thereof.

          Section 2.3 Who Deemed Absolute Owner. The Company may deem the Person
in whose name this Debenture  shall be registered upon the registry books of the
Company  to be,  and

                                      -6-


may treat it as,  the  absolute  owner of this  Debenture  (whether  or not this
Debenture  shall be  overdue)  for the  purpose  of  receiving  payment of or on
account of the Principal Amount of this Debenture or the interest  thereon,  for
the  conversion ,  redemption  or maturity of this  Debenture  and for all other
purposes,  and the Company  shall not be affected by any notice to the contrary.
All such  payments  and  such  conversions  or  redemptions  shall be valid  and
effectual to satisfy and  discharge  the  liability  upon this  Debenture to the
extent of the sum or sums so paid or the conversion,  conversions or redemptions
so made.

          Section 2.4 Repayment at Maturity.  At the Maturity  Date, the Company
shall repay the outstanding  Principal  Amount of this Debenture in whole at one
hundred  percent  (100%) of the  Principal  Amount  thereof,  together  with all
accrued and unpaid interest thereon, to the Maturity Date.


                                    ARTICLE 3
                             CONVERSION OF DEBENTURE

          Section 3.1 Conversion; Redemption by Holder. (a) At the option of the
Holder,  this Debenture may be converted,  either in whole or in part, up to the
full Principal  Amount hereof (in increments of $100,000 in Principal  Amount or
any  integral  multiple  of  $100,000  in excess  thereof)  into  Common  Shares
(calculated as to each such  conversion to the nearest  1/100th of a share),  at
any time and from time to time on any  Business  Day after the Closing Date (the
"Initial Conversion Date"),  subject to the limitations in the next sentence and
compliance  with  Section  3.2.  The  number of Common  Shares  into  which this
Debenture may be converted is equal to (x) the Principal Amount of the Debenture
being  converted at the Conversion Date (plus any accrued and unpaid interest on
the Debenture  being converted  through the Conversion  Date) divided by (y) the
Conversion  Price.  The "Conversion  Price" shall be equal to 105% of the volume
weighted  average of the closing prices of the Common Shares as reported on Amex
for the ten (10) Trading Days immediately preceding the Closing Date (the "Fixed
Price") (subject to adjustment for any stock-split or stock combination to occur
after the date  hereof).  At the  Company's  option,  the amount of accrued  and
unpaid interest as of the Conversion Date shall not be subject to conversion but
instead may be paid in cash as of the Conversion  Date; if the Company elects to
convert the amount of accrued and unpaid  interest at the  Conversion  Date into
Common  Stock,  the Common  Stock  issued to the  Holder  shall be valued at the
applicable Conversion Price.

          (b)  Notwithstanding  the  foregoing,  during  the  period  commencing
September 19, 2002 (the "Put Exercise Date"), the Holder shall have the right to
cause the Company to redeem this  Debenture  at a price in cash equal to 100% of
the principal  amount  thereof,  plus all accrued and unpaid  interest  thereon;
provided,  however,  that the Holder  shall only have the right to redeem 25% of
this  Debenture  pursuant  to this  paragraph  in any  ninety  (90)  consecutive
calendar  day  period;  provided,  further,  however,  that with  respect to any
Redemption  exercised  pursuant to this paragraph,  the Company may, at its sole
option,  elect to deliver to the Holder shares of Common Stock with an aggregate
Market Price equal to the redemption price specified above.  Notwithstanding the
foregoing, the Company agrees to take into consideration written request(s) from
the  Holder  to pay any  Redemption  in  cash.  Except  as  otherwise  expressly
specified in this

                                      -7-

paragraph,  all terms and conditions applicable to a redemption or conversion of
all or any  portion  of  this  Debenture  as  specified  in this  Article  3 and
otherwise herein,  shall apply to any redemption or conversion  pursuant to this
paragraph.

          Section 3.2 Exercise of Redemption or Conversion Privilege. Redemption
or conversion of this Debenture,  as the case may be, may be exercised, in whole
or in part,  on any  Business  Day by the Holder by  delivering  an executed and
completed  Redemption/Conversion  Notice to the Company along with the Debenture
or Debentures to be so redeemed or converted. The  Redemption/Conversion  Notice
shall  specify  whether the notice  relates to a redemption or conversion of the
Debentures  or both,  and the  aggregate  principal  amount of  Debentures to be
redeemed   or   converted,   as  the  case  may  be.   Each   date  on  which  a
Redemption/Conversion  Notice is delivered to the Company in accordance with the
provisions of this Section 3.2 shall  constitute a Redemption Date or Conversion
Date,  as the case may be. The Company shall convert the Debenture and issue the
Common Stock Issued At  Redemption/Conversion  in the manner  provided  below in
this Section 3.2, and all voting and other rights associated with the beneficial
ownership of the Common Stock  Issued At  Redemption/Conversion  shall vest with
the Holder,  effective as of the  Conversion  Date at the time  specified in the
applicable  Redemption/Conversion Notice. Upon receiving a Redemption/Conversion
Notice  properly  demanding a Redemption of all or a portion of this  Debenture,
the Company shall, within five (5) Business Days, determine whether it wishes to
exercise its right to redeem this  Debenture with shares of Common Stock in lieu
of cash.  If the  Company  elects to redeem this  Debenture  using the shares of
Common  Stock,  then the Company shall redeem the Debenture and issue the Common
Stock  Issued At  Redemption/Conversion  in the  manner  provided  below in this
Section  3.2,  and all voting and other rights  associated  with the  beneficial
ownership of the Common Stock  Issued At  Redemption/Conversion  shall vest with
the Holder,  effective as of the  Redemption  Date at the time  specified in the
applicable  Redemption/Conversion  Notice. The Redemption/Conversion Notice also
shall state the name or names (with  addresses) of the Persons who are to become
the  holders of the Common  Stock  Issued At  Redemption/Conversion,  if any, in
connection with such redemption or conversion.  Upon surrender for redemption or
conversion, this Debenture shall be accompanied by a proper assignment hereof to
the  Company or be  endorsed in blank.  As  promptly  as  practicable  after the
receipt of the  Redemption/Conversion  Notice as aforesaid, but in any event not
more  than  five (5)  Business  Days  after,  in the case of a  Conversion,  the
Company's  receipt  of  the  applicable  Redemption/Conversion  Notice  and  all
associated Debentures and, in the case of a Redemption, the Company's receipt of
the applicable  Redemption/Conversion  Notice and all associated  Debentures and
the  expiration  of the five (5) Business Day period during which the Company is
required to determine the form of the  consideration  to be paid in  redemption,
the Company shall (i) issue the Common Stock Issued At  Redemption/Conversion in
accordance  with the  provisions  of this Article 3, and (ii) cause to be mailed
for delivery by overnight courier or transmit to the Holder (x) a certificate or
certificate(s)  representing the number of whole Common Shares, if any, to which
the Holder is entitled by virtue of such redemption or conversion,  (y) cash, as
provided in Section 3.3, in respect of any  fraction of a Common Share  issuable
upon such conversion and (z) if, upon any Conversion, the Company chooses to pay
accrued and unpaid  interest  in cash,  cash in the amount of accrued and unpaid
interest on the  Debenture  being  converted  as of the  Conversion  Date.  Such
redemption  or  conversion  shall be deemed to have

                                      -8-

been effected at the time at which the Redemption/Conversion Notice indicates so
long as this  Debenture  shall have been  surrendered as aforesaid at such time,
and at such time the rights of the Holder of this Debenture,  as such (except if
and to the extent that any Principal Amount thereof remains unconverted),  shall
cease and the Person or Persons in whose name or names the Common Stock, if any,
Issued at  Redemption or  Conversion  shall be issuable  shall be deemed to have
become the holder or holders of record of the Common Shares represented thereby,
and all voting and other rights associated with the beneficial ownership of such
Common  Shares  shall at such  time  vest  with  such  Person  or  Persons.  The
Redemption/Conversion  Notice shall constitute a contract between the Holder and
the Company,  whereby the Holder shall be deemed to subscribe  for the number of
Common  Shares  which it will be entitled  to receive  upon such  conversion  or
redemption and, in payment and  satisfaction of such  subscription  (and for any
cash  adjustment to which it is entitled  pursuant to Section 3.4), to surrender
this Debenture and to release the Company from all liability  thereon (except if
and to the  extent  that any  Principal  Amount  thereof  remains  unconverted);
provided, that, in the case of any redemption in which the form of consideration
elected by the Company is cash, this sentence shall be deemed to be inoperative.
No cash payment aggregating less than $1.00 shall be required to be given.

          Section 3.3 Fractional  Shares.  No fractional  Common Shares or scrip
representing fractional Common Shares shall be delivered upon conversion of this
Debenture.  Instead of any  fractional  Common Shares which  otherwise  would be
delivered upon conversion or redemption of this Debenture, the Company shall pay
a cash  adjustment  in respect of such  fraction in an amount  equal to the same
fraction  multiplied by the Current Market Price on the Conversion Date. No cash
payment of less than $1.00 shall be required to be given.

          Section 3.4 Adjustments.

          (a) In case the Company shall  reorganize its capital,  reclassify its
capital  stock,  consolidate  or merge with or into  another  Person  (where the
Company is not the survivor or where there is a change in or  distribution  with
respect to the Common Stock of the Company), sell, convey, transfer or otherwise
dispose of all or substantially all its property,  assets or business to another
Person,  or effectuate a transaction or series of related  transactions in which
more than 50% of the  voting  power of the  Company  is  disposed  of  (each,  a
"Fundamental  Corporate  Change") and, pursuant to the terms of such Fundamental
Corporate  Change,  shares  of  common  stock  of  the  successor  or  acquiring
corporation, or any cash, shares of stock or other securities or property of any
nature whatsoever  (including warrants or other subscription or purchase rights)
in  addition  to or in  lieu of  common  stock  of the  successor  or  acquiring
corporation  ("Other  Property"),  are to be received by or  distributed  to the
holders of Common Stock of the Company,  then the Holder of this Debenture Stock
shall have the right thereafter,  at its sole option,  either (x) to receive the
number of shares of common stock of the successor or acquiring corporation or of
the  Company,  if it is the  surviving  corporation,  and Other  Property  as is
receivable upon or as a result of such Fundamental  Corporate Change by a holder
of the number of shares of Common Stock into which such the outstanding  portion
of the Debenture may be converted at the Conversion Price applicable immediately
prior to such Fundamental  Corporate Change or (y) require the Company,  or such
successor,  resulting or purchasing corporation, as the case may be, to, without
benefit of any additional  consideration therefor, to execute and deliver to the
Holder a  debenture  with  substantial  identical  rights,  privileges,  powers,

                                      -9-


restrictions  and other terms as this Debenture in an amount equal to the amount
this  Debenture  which is  outstanding  immediately  prior  to such  Fundamental
Corporate  Change.  For purposes of this Section  3.4(b),  "common  stock of the
successor or acquiring  corporation"  shall include stock of such corporation of
any class which is not  preferred as to dividends or assets over any other class
of stock of such  corporation  and which is not subject to prepayment  and shall
also include any evidences of indebtedness,  shares of stock or other securities
which  are  convertible  into  or  exchangeable  for  any  such  stock,   either
immediately  or upon the  arrival  of a  specified  date or the  happening  of a
specified  event and any warrants or other  rights to subscribe  for or purchase
any such stock. The foregoing  provisions of this Section 3.4(a) shall similarly
apply to successive Fundamental Corporate Changes.

          (b)  If  the  Company  shall  hereafter  pay  a  dividend  or  make  a
distribution to Holders of the  Outstanding  shares of Common Stock in shares of
Common Stock,  the Conversion  Price in effect at the opening of business on the
date following the date fixed for the determination of shareholders  entitled to
receive such dividend or other distribution shall be reduced by multiplying such
Conversion  Price by a fraction  of which the  numerator  shall be the number of
shares of Common Stock  Outstanding  at the close of business on the record date
fixed for such determination and the denominator shall be the sum of such number
of shares and the total  number of shares  constituting  such  dividend or other
distribution,  such reduction to become effective  immediately after the opening
of  business  on  the  day  following  such  record  date.  If any  dividend  or
distribution of the type described in this Section 3.4(b) is declared but not so
paid or made,  the  Conversion  Price shall again be adjusted to the  Conversion
Price which would then be in effect if such  dividend  or  distribution  had not
been declared;

          (c) If the  Outstanding  shares of Common Stock shall be subdivided or
reclassified  into a greater  number of shares of Common Stock,  the  Conversion
Price in effect at the  opening of business  on the day  following  the day upon
which such subdivision becomes effective shall be proportionately  reduced, and,
conversely,  if the Outstanding  shares of Common Stock shall be combined into a
smaller number of shares of Common Stock,  the Conversion Price in effect at the
opening of business  on the day  following  the day upon which such  combination
becomes  effective  shall  be  proportionately   increased,  such  reduction  or
increase,  as the case may be, to become effective immediately after the opening
of  business  on the day  following  the day  upon  which  such  subdivision  or
combination becomes effective

          Section 3.5 Optional Prepayment.  At any time after the Effective Date
and prior to the Maturity Date, the Company, upon notice delivered to the Holder
as provided in Section 3.6, may prepay this Debenture in whole or in part at the
Optional Prepayment Price, together with all accrued and unpaid interest thereon
to the date of prepayment.

          Section  3.6  Notice  of  Prepayment.  Notice of  optional  prepayment
pursuant to Section 3.5 ("Notice of Optional  Prepayment")  shall be provided by
the Company to the Holder in writing at the Holder's  last address  appearing in
the Company's security registry not less than thirty (30) Business Days prior to
the prepayment  date and no more than forty five (45) Business Days prior to the
prepayment date,  which notice shall be in  substantially  the form of Exhibit B
hereto,  specify  the  prepayment  date and refer to Section  3.5  (including  a
statement of the prepayment  price), and this Section 3.6.  Notwithstanding  any
sending of a Notice of Optional

                                      -10-

Prepayment, the Holder shall have the right to convert all or any portion of the
Debentures pursuant to Section 3.2 until the applicable prepayment date.

          Section 3.7 Surrender of Debentures. Upon any redemption or prepayment
of this Debenture pursuant to Sections 3.2, or 3.5, or upon maturity pursuant to
Section  2.4, the Holder  shall  either  deliver  this  Debenture by hand to the
Company at its principal  executive offices or surrender the same to the Company
at such  address by  nationally  recognized  overnight  courier.  Payment of the
redemption or prepayment  price  pursuant to Sections 3.2, or 3.5, or the amount
due on maturity  specified in Section  2.4,  shall be made by the Company to the
Holder  against  receipt of this  Debenture (as provided in this Section 3.7) by
wire transfer of immediately  available  funds to such  account(s) as the Holder
shall specify by written  notice to the Company.  If payment of such  prepayment
price is not made in full by the prepayment  date, or the amount due on maturity
is not paid in full by the Maturity  Date, the Holder shall again have the right
to convert this Debenture as provided in Article 3 hereof or to declare an Event
of Default.

          Section 3.8 Mandatory Early  Conversion at Request of Company.  During
the  period  commencing  after the date on which  the  Commission  declares  the
Registration  Statement  effective (the "Effective Date") and until the Maturity
Date,  in the  event  (i)  the  Registration  Statement  shall  continuously  be
effective  uninterrupted  from the Effective  Date and (ii) the fifteen (15) day
volume weighted average closing price (as reported on the Principal  Exchange on
which the Common Stock of the Company trades),  of the Common Stock exceeds 210%
of the Conversion  Price,  at the option of the Company,  exercisable by written
notice to the Holder on the trading day on which the closing price of the Common
Stock exceeds the  Conversion  Price by 210%, the Company may convert all or any
portion  of this  Debenture  into  Common  Stock at the  Conversion  Price  (and
otherwise subject to the terms and conditions specified in Section 3.1 hereof).


                                    ARTICLE 4
                        STATUS; RESTRICTIONS ON TRANSFER

          Section  4.1  Status of  Debenture.  This  Debenture  is an  unsecured
obligation of the Company, and constitutes a legal, valid and binding obligation
of the  Company,  enforceable  in  accordance  with  its  terms  subject,  as to
enforceability, to general principles of equity and to principles of bankruptcy,
insolvency,  reorganization  and other  similar  laws of  general  applicability
relating to or affecting creditors' rights and remedies generally.

          Section 4.2 Restrictions on Transfer.  This Debenture,  and any Common
Shares  deliverable upon the conversion  hereof,  have not been registered under
the  Securities  Act. The Holder by  accepting  this  Debenture  agrees that the
Debenture  and the shares of Common Stock to be acquired as interest on and upon
conversion of this Debenture may not be assigned or otherwise transferred unless
and until (i) the  Company  has  received  the opinion of counsel for the Holder
that the  Debenture  or such shares may be sold  pursuant to an  exemption  from
registration under the Securities Act or (ii) a registration  statement relating
to the  Debenture  or such  shares has been filed by the  Company  and  declared
effective by the SEC.

                                      -11-

          Each  certificate  for shares of Common  Stock  deliverable  hereunder
shall bear a legend as follows unless and until such  securities  have been sold
pursuant to an effective registration statement under the Securities Act:

          "The  securities   represented  by  this  certificate  have  not  been
          registered  under  the  Securities  Act  of  1933  (the  "Act").   The
          securities may not be offered for sale, sold or otherwise  transferred
          except (i) pursuant to an effective  registration  statement under the
          Act or (ii) pursuant to an exemption from  registration  under the Act
          in respect of which the issuer of this  certificate  has  received  an
          opinion of counsel  satisfactory to the issuer of this  certificate to
          such effect. Copies of the agreement covering both the purchase of the
          securities and  restricting  their transfer may be obtained at no cost
          by written request made by the holder of record of this certificate to
          the  Secretary  of the  issuer of this  certificate  at the  principal
          executive offices of the issuer of this certificate."

          This note will be considered  to have been issued with Original  Issue
          Discount  ("OID")  for  purposes  of  sections  1271 et.  seq.  of the
          Internal Revenue Code of 1986, as amended. The issue date of this note
          is September  18, 2001.  For  information  regarding  the issue price,
          amount of OID per $1,000 of principal  amount and yield to maturity of
          this note for  purposes  of the OID rules,  please  contact  Andrew P.
          Savadelis at eMagin Corporation.

          Notwithstanding   the  above,  the  Holder  shall  not  transfer  this
Debenture or any Common Shares  issueable or any rights  hereunder to any person
or entity which is engaged in a business that in the reasonable  judgment of the
Company is in competition with the Company.


                                    ARTICLE 5
                                    COVENANTS

          Section 5.1 Notice of Default.  If any one or more events  occur which
constitute or which,  with notice,  lapse of time, or both,  would constitute an
Event of Default, or if the Holder shall demand the delivery of Common Shares or
take any  other  action  permitted  upon  the  occurrence  of any such  Event of
Default,  the Company shall forthwith give notice to the Holder,  specifying the
nature and status of the Event of  Default or other  event or of such  demand or
action, as the case may be.

          Section 5.2 Payment of Obligations. So long as this Debenture shall be
outstanding,  the Company shall pay, extend, or discharge at or before maturity,
all its respective  material  obligations and  liabilities,  including,  without
limitation,  tax  liabilities,  except  where the same may be  contested in good
faith by appropriate proceedings.

          Section 5.3 Compliance  with Laws. So long as this Debenture  shall be
outstanding,  the Company  shall comply with all  applicable  laws,  ordinances,
rules,  regulations,  and

                                      -12-


requirements of governmental  authorities,  except for such noncompliance  which
would not have a material adverse effect on the business, properties, prospects,
condition (financial or otherwise) or results of operations of the Company.

          Section 5.4 Inspection of Property, Books and Records. So long as this
Debenture  shall be  outstanding,  the Company shall keep proper books of record
and  account  in which  full,  true  and  correct  entries  shall be made of all
material  dealings and  transactions  in relation to its business and activities
and shall permit  representatives of the Holder at the Holder's expense to visit
and inspect any of its respective properties, to examine and make abstracts from
any of its respective books and records,  not reasonably deemed  confidential by
the Company,  and to discuss its respective affairs,  finances and accounts with
its  respective  officers  and  independent  public  accountants,  all  at  such
reasonable times and as often as may reasonably be desired.

          Section  5.5 No Short  Sales.  The  Holder  by its  acceptance  hereof
covenants and agrees that, so long as this Debenture shall be outstanding,  none
of the Holder,  its  affiliates and any Person acting on its or their behalf (i)
has the  intention  of entering  in, or will enter into,  any put option,  short
position or other similar instrument or position or other derivative  instrument
for which the Common Stock is an underlying  Security with respect to the Common
Stock,   (ii)  will  use  at  any  time  shares  of  Common   Stock   Issued  At
Redemption/Conversion  to settle any put option, short position or other similar
instrument or position or other derivative instrument for which the Common Stock
is an underlying Security that may have been entered into prior to the execution
of this  Debenture or (iii) has the intention of engaging in, or will engage in,
any short sale of the Common  Stock Issued At  Redemption/Conversion;  provided,
however,  that nothing in this Section 5.5 shall operate to forbid the Holder or
any of its  affiliates or any Person acting on its or their behalf from selling,
or  entering  into any other  transaction  with  respect  to, the  Common  Stock
contemporaneously  with or following such date and time as the Person or Persons
in whose name or names the Common Stock Issued At Redemption/Conversion shall be
issuable  shall be deemed to have  become the holder or holders of record of the
Common  Shares  represented  thereby and all voting and other rights  associated
with the beneficial  ownership of such Common Shares shall have vested with such
Person or Persons.


                                    ARTICLE 6
                                    REMEDIES

          Section 6.1 Events of Default. "Event of Default" wherever used herein
means any one of the following events:

          (a) the  Company  shall  default  in the  payment of  principal  of or
interest on this Debenture as and when the same shall be due and payable and, in
the case of an interest  payment  default,  such default shall continue for five
(5) Business Days after the date such  interest  payment was due, or the Company
shall fail to perform or observe in any  material  respect  any other  covenant,
agreement, term, provision,  undertaking or commitment under this Debenture, the
Securities  Purchase  Agreement,  the Stock Purchase Warrant or the Registration
Rights  Agreement  and such default  shall  continue for a period of twenty (20)
Business  Days after the  delivery  to the  Company of written  notice  that the
Company is in default hereunder; or

                                      -13-

          (b) any of the  representations  or  warranties  made  by the  Company
herein, in the Securities Purchase Agreement, the Registration Rights Agreement,
the Stock Purchase  Warrant or in any  certificate or financial or other written
statements  heretofore or hereafter  furnished by or on behalf of the Company in
connection  with the execution and delivery of this  Debenture,  the  Securities
Purchase  Agreement,  the Stock  Purchase  Warrant  or the  Registration  Rights
Agreement  shall be false or misleading  in any material  respect on the Closing
Date; or

          (c) the entry of a decree or order by a court having  jurisdiction  in
the premises adjudging the Company or any Subsidiary a bankrupt or insolvent, or
approving  as properly  filed a petition  seeking  reorganization,  arrangement,
adjustment or  composition  of or in respect of the Company under the Bankruptcy
Code or any other  applicable  Federal or state law, or  appointing  a receiver,
liquidator, assignee, trustee or sequestrator (or other similar official) of the
Company or of any substantial  part of its property,  or ordering the winding-up
or  liquidation  of its affairs,  and any such decree or order  continues and is
unstayed and in effect for a period of 60 calendar days; or

          (d) the institution by the Company or any Subsidiary of proceedings to
be adjudicated a bankrupt or insolvent,  or the consent by it to the institution
of  bankruptcy or  insolvency  proceedings  against it, or the filing by it of a
petition  or answer  or  consent  seeking  reorganization  or  relief  under the
Bankruptcy Code or any other applicable  federal or state law, or the consent by
it to the  filing of any such  petition  or to the  appointment  of a  receiver,
liquidator, assignee, trustee or sequestrator (or other similar official) of the
Company  of any  substantial  part of its  property,  or the  making by it of an
assignment  for the benefit of  creditors,  or the admission by it in writing of
its  inability  to pay its debts  generally  as and when they become due, or the
taking of corporate action by the Company in furtherance of any such action; or

          (e) a final judgment or final judgments for the payment of money shall
have been entered by any court or courts of competent  jurisdiction  against the
Company and remains  undischarged  for a period (during which execution shall be
effectively  stayed) of thirty (30) days,  provided that the aggregate amount of
all such  judgments  at any time  outstanding  (to the  extent not paid or to be
paid, as evidenced by a written communication to that effect from the applicable
insurer, by insurance) exceeds $1,000,000; or

          (f) it becomes  unlawful for the Company to perform or comply with its
obligations under this Debenture,  the Securities Purchase Agreement,  the Stock
Purchase Warrant or the Registration  Rights Agreement in any material  respect;
or

          (g) the Company shall default  (giving effect to any applicable  grace
period)  in the  payment of  principal  or  interest  as and when the same shall
become  due and  payable,  under  any  indebtedness,  individually  of more than
$1,000,000.

          Section 6.2 Acceleration of Maturity;  Rescission and Annulment. If an
Event of  Default  occurs  and is  continuing,  then and in every  such case any
Holder  may  rescind  any  outstanding  Redemption/Conversion  Notice and obtain
payment  for the entire  outstanding  Principal  Amount of the  Debenture  which
remains  unconverted,  by a notice in writing to the Company,  and upon any such
declaration  the entire  Principal  Amount of this  Debenture,  plus

                                      -14-

accrued but unpaid interest,  shall become immediately due and payable by virtue
of such  rescission;  provided,  however,  in the case of any  Event of  Default
described in paragraphs (c) or (d) above, the entire then outstanding  Principal
Amount of this Debenture, together with all accrued and unpaid interest thereon,
automatically  shall become immediately due and payable without the necessity of
any notice or declaration as aforesaid.

          Section 6.3 Default  Interest Rate. If any portion of the principal of
or interest on the  Debenture  shall not be paid when due (whether at the stated
maturity,  by  acceleration  or otherwise) such principal of and interest on the
Debenture  which is due and  owing  but not paid  shall,  without  limiting  the
Holder's rights under this Debenture, bear interest at the Default Interest Rate
until paid in full.

          Notwithstanding  anything  herein to the contrary,  if at any time the
applicable  interest rate as provided for herein shall exceed the maximum lawful
rate which may be contracted  for,  charged,  taken or received by the Lender in
accordance with  applicable laws of the State of New York (the "Maximum  Rate"),
the rate of interest applicable to the Debenture shall be limited to the Maximum
Rate.

          Section  6.4  Remedies  Not Waived.  No course of dealing  between the
Company and the Holder or any delay in  exercising  any rights  hereunder  shall
operate as a waiver by the Holder.


                                    ARTICLE 7
                                  MISCELLANEOUS

          Section 7.1 Notice of Certain Events. In the case of the occurrence of
any event described in Section 3.4 of this Debenture, the Company shall cause to
be mailed to the Holder of this  Debenture  at its last address as it appears in
the  Company's  security  registry,  at  least  twenty  (20)  days  prior to the
applicable  record,  effective or expiration date hereinafter  specified (or, if
such twenty (20) days' notice is not  possible,  at the earliest  possible  date
prior to any such  record,  effective or  expiration  date),  a notice  thereof,
including, if applicable, a statement of (x) the date on which a record is to be
taken for the purpose of such  dividend,  distribution,  issuance or granting of
rights,  options or warrants,  or if a record is not to be taken, the date as of
which the holders of record of Common  Stock to be  entitled  to such  dividend,
distribution,  issuance  or granting  of rights,  options or warrants  are to be
determined  or (y)  the  date on  which  such  reclassification,  consolidation,
merger,  sale, transfer,  dissolution,  liquidation or winding-up is expected to
become effective, and the date as of which it is expected that holders of record
of Common Stock will be entitled to exchange their shares for  securities,  cash
or other property deliverable upon such reclassification, consolidation, merger,
sale transfer, dissolution, liquidation or winding-up.

          Section 7.2 Register. The Company shall keep at its principal office a
register  in which  the  Company  shall  provide  for the  registration  of this
Debenture. Upon any transfer of this Debenture in accordance with Articles 2 and
3 hereof, the Company shall register such transfer on the Debenture register.

                                      -15-



          Section 7.3 Withholding. To the extent required by applicable law, the
Company may withhold amounts for or on account of any taxes imposed or levied by
or on behalf of any taxing  authority in the United States  having  jurisdiction
over the Company from any payments made pursuant to this Debenture.

          Section  7.4  Transmittal  of  Notices.  Except  as may  be  otherwise
provided  herein,  any notice or other  communication  or  delivery  required or
permitted  hereunder  shall be in writing and shall be delivered  personally  or
transmitted  by telecopy or sent by certified  mail,  postage  prepaid,  or by a
nationally  recognized overnight courier service, and shall be deemed given when
so delivered  personally or by telecopy or by overnight courier service,  or, if
mailed,  four (4) days after the date of deposit in the United States mails,  as
follows:


          (l) if to the Company, to:

              eMagin Corporation
              2070 Route 52
              Hopewell Junction, NY 12533
              Attention:  Gary Jones, CEO
              Tel: (845) 892-1900
              Fax: (845) 892-1901

              with a copy to:

              White & Case LLP
              1155 Avenue of the Americas
              New York, New York  10036
              Attention:  S. Ward Atterbury
              Tel:  (212) 819-8200
              Fax:  (212) 354-8113

          (2) if to the  Holder,  to the  address of such Holder as shown on the
books of the Company.

Each of the Holder or the  Company  may change the  foregoing  address by notice
given pursuant to this Section 7.4.

          Section 7.5 Governing  Law. THIS  DEBENTURE  SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE  WITH, THE LAWS OF THE STATE OF NEW YORK (WITHOUT GIVING
EFFECT TO CONFLICTS  OF LAWS  PRINCIPLES).  WITH RESPECT TO ANY SUIT,  ACTION OR
PROCEEDINGS  RELATING TO THIS DEBENTURE,  THE COMPANY IRREVOCABLY SUBMITS TO THE
NON-EXCLUSIVE JURISDICTION OF THE COURTS OF THE STATE OF NEW YORK AND THE UNITED
STATES  DISTRICT  COURT  LOCATED IN THE BOROUGH OF  MANHATTAN IN THE CITY OF NEW
YORK AND HEREBY WAIVES,  TO THE FULLEST EXTENT  PERMITTED BY APPLICABLE LAW, ANY
CLAIM  THAT  ANY  SUCH  SUIT,  ACTION  OR  PROCEEDING  HAS  BEEN  BROUGHT  IN AN
INCONVENIENT  FORUM.

                                      -16-


SUBJECT TO APPLICABLE LAW, THE COMPANY AGREES THAT FINAL JUDGMENT  AGAINST IT IN
ANY LEGAL  ACTION OR  PROCEEDING  ARISING OUT OF OR  RELATING TO THIS  DEBENTURE
SHALL BE  CONCLUSIVE  AND MAY BE  ENFORCED IN ANY OTHER  JURISDICTION  WITHIN OR
OUTSIDE THE UNITED  STATES BY SUIT ON THE  JUDGMENT,  A CERTIFIED  COPY OF WHICH
JUDGMENT   SHALL  BE  CONCLUSIVE   EVIDENCE   THEREOF  AND  THE  AMOUNT  OF  ITS
INDEBTEDNESS, OR BY SUCH OTHER MEANS PROVIDED BY LAW.

          Section 7.6  Headings.  The  headings of the  Articles and Sections of
this Debenture are inserted for convenience only and do not constitute a part of
this Debenture.

          Section 7.7 Recovery. Each of the Holder and the Company hereby agrees
that to the extent that it recovers  damages for a breach under this  Debenture,
such party shall not be entitled  to recover  damages for the same breach  under
the Securities Purchase Agreement or the Registration Rights Agreement.

          Section 7.8 Payment Dates. Whenever any payment hereunder shall be due
on a day other  than a  Business  Day,  such  payment  shall be made on the next
succeeding Business Day.

          Section 7.9 Binding  Effect.  Each Holder by accepting  this Debenture
agrees  to be  bound  by and  comply  with  the  terms  and  provisions  of this
Debenture.

          Section  7.10 No  Stockholder  Rights.  Except as  otherwise  provided
herein,  this  Debenture  shall not entitle the Holder to any of the rights of a
stockholder of the Company, including, without limitation, the right to vote, to
receive  dividends and other  distributions,  or to receive any notice of, or to
attend, meetings of stockholders or any other proceedings of the Company, unless
and to the extent  converted into shares of Common Stock in accordance  with the
terms hereof.

              [THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]




          IN WITNESS WHEREOF, the Company has caused this Debenture to be signed
by its duly authorized officer on the date of this Debenture.


                               EMAGIN CORPORATION



                               By:  ____________________________________________
                                    Name:  Gary W. Jones
                                    Title:  Chief Executive Officer


                                                                       EXHIBIT A

                     [FORM OF REDEMPTION/CONVERSION NOTICE]


TO:      eMagin Corporation
         2070 Route 52
         Hopewell Junction, NY 12533
         Attn:

          The  undersigned  owner of this 4%  Convertible  Debenture due July 6,
2004 (the  "Debenture")  issued by eMagin  Corporation  (the  "Company")  hereby
irrevocably  exercises  its  option  to  [redeem /  convert]  $_________________
Principal Amount of the Debenture and accrued and unpaid interest thereon to the
date of this Notice into shares of the common  stock,  par value $.001 per share
("Common Stock"),  of the Company in accordance with the terms of the Debenture.
The undersigned  hereby  instructs the Company to [redeem / convert] the portion
of the  Debenture  specified  above  into  shares  of  Common  Stock  Issued  At
Redemption/Conversion  in  accordance  with the  provisions  of Article 3 of the
Debenture.  The  undersigned  directs  that the  Common  Stock and  certificates
therefor   deliverable   upon   [redemption   /   conversion],   the   Debenture
recertificated  in the Principal Amount not being  surrendered for [redemption /
conversion] hereby, plus accrued and unpaid interest thereon to the date of this
Notice,  together  with any check in payment for  fractional  Common  Stock,  be
registered  in the name of and delivered to the  undersigned  unless a different
name has been indicated below. All capitalized terms used and not defined herein
have the respective meanings assigned to them in the Debenture.  The [redemption
/ conversion]  pursuant hereto shall be deemed to have been effected at the date
and time specified  below,  and at such time the rights of the  undersigned as a
Holder of the Principal  Amount of the Debenture set forth above shall cease and
the  Person or Persons in whose  name or names the  Common  Stock  Delivered  at
Conversion  shall be  registered  shall be deemed to have  become  the holder or
holders of record of the Common  Shares  represented  thereby and all voting and
other rights  associated  with the  beneficial  ownership of such Common  Shares
shall at such time vest with such Person or Persons.


Date and time:  _______________________


                                       _________________________________________
                                       Signature

          Fill in for registration of Debenture:

Please print name and address
(including ZIP code number):

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                                      A-1


                                                                       EXHIBIT B



                       [FORM OF COMPANY PREPAYMENT NOTICE]


Dated:______________

TO:      [Holder]
         [Address]

          eMagin  Corporation (the "Company") hereby  irrevocably  exercises its
option to prepay  $__________  Principal Amount of the 4% Convertible  Debenture
due July 6, 2004 issued by the Company (the "Debenture"),  at a prepayment price
of $_________ and of accrued and unpaid interest thereon, in accordance with the
terms of the Debenture. The undersigned hereby instructs the Holder to surrender
the portion of the Debenture  specified  above in accordance with the provisions
of  Sections  3.5 and 3.6 of the  Debenture.  Upon  receipt of such  surrendered
Debenture,  the  Company  shall  deliver  the  Debenture  recertificated  in the
Principal Amount, if any, not being called for prepayment hereby,  together with
the check in payment of the prepayment  price and for  fractional  Common Stock,
such recertificated  Debenture to be issued in your name and delivered to you or
issued in the name of such other Person as you may  designate  and  delivered to
such other Person.  All  capitalized  terms used and not defined herein have the
respective meanings assigned to them in the Debenture.


                                         Very truly yours,


                                         eMagin Corporation


                                         By:
                                            ------------------------------------
                                            Name:
                                            Title:

                                      B-1