Exhibit 99.1

              Cognex Corporation Announces Second Quarter Results

    NATICK, Mass.--(BUSINESS WIRE)--July 19, 2005--Cognex Corporation (NASDAQ:
CGNX) today announced revenue for the second quarter ended July 3, 2005, of
$54,603,000, and net income of $7,800,000, or $0.17 per diluted share. These
most recent quarterly results, which include results from the acquisition of DVT
Corporation since May 9, 2005, are compared to the company's historical results
for the second quarter of 2004 and for the first quarter of 2005 in the table
below.

                                                          Earnings per
                                                            Diluted
         Time Period            Revenue      Net Income      Share
- ----------------------------------------------------------------------
Current quarter: Q2-05        $54,603,000    $7,800,000      $0.17
- ----------------------------------------------------------------------
Prior year's quarter: Q2-04   $54,467,000   $10,878,000      $0.23
- ----------------------------------------------------------------------
Change from Q2-04 to Q2-05         0%           (28%)        (28%)
- ----------------------------------------------------------------------
Prior quarter: Q1-05          $43,198,000    $5,294,000      $0.11
- ----------------------------------------------------------------------
Change from Q1-05 to Q2-05        26%            47%          47%
- ----------------------------------------------------------------------

    Revenue, net income and earnings per share for the six months
ended July 3, 2005, which include results from the acquisition of DVT
Corporation since May 9, 2005, are compared to the company's
historical results for the comparable period in 2004 in the table
below.

                                                         Earnings per
                                                           Diluted
        Time Period            Revenue      Net Income      Share
- ----------------------------------------------------------------------
Six months ended July 3,
 2005                        $97,801,000   $13,094,000      $0.28
- ----------------------------------------------------------------------
Six months ended July 4,
 2004                       $102,636,000   $19,445,000      $0.41
- ----------------------------------------------------------------------
Change from first six months
 of 2004 to first six months
 of 2005                        (5%)          (33%)          (33%)
- ----------------------------------------------------------------------


    To help readers understand the company's performance excluding the
acquisition of DVT, the company's Statement of Operations is shown in
Exhibit 1 (Including DVT) and Exhibit 2 (Excluding DVT), and a
reconciliation of the quarter and six months ended July 3, 2005,
including and excluding DVT is shown in Exhibit 3.
    "The second quarter of 2005 was a good quarter if you look at it
on a sequential basis, but not so good on a year-on-year comparison,"
said Dr. Robert J. Shillman, Cognex's Chairman and Chief Executive
Officer. "Revenue increased significantly on a sequential basis due to
higher sales to customers in the surface inspection and factory
automation markets, each of which had record revenue in the second
quarter of 2005, as well as from revenue from our acquisition of DVT
Corporation, which did better than expected. And, our net margin
improved as we began to see a return on the investments we made during
2004 in end user sales and marketing personnel to help drive future
revenue."
    Dr. Shillman continued, "However, the year-on-year comparables are
disappointing due to lower demand from customers in the semiconductor
and electronics capital equipment industries, and due to the
incremental costs of our investments outside of this cyclical sector
to generate growth for the future."

    Details of the Quarter

    Statement of Operations Highlights - Second Quarter of 2005

    --  Revenue for the second quarter of 2005 was flat with the
        comparable quarter in 2004, and that was quite an
        accomplishment given that the revenue from customers who make
        capital equipment for the semiconductor and electronics
        industries declined by 49%. That shortage was completely made
        up by higher revenue from discrete manufacturers in the
        factory automation area (including $5,500,000 from DVT
        Corporation) and higher sales of SmartView(R), the company's
        surface inspection product. On a sequential basis, revenue
        increased 26% due to higher factory automation revenue and
        higher sales of SmartView.

    --  Gross margin was 71% in the second quarter of 2005 compared to
        71% in the comparable quarter in 2004 and 68% in the prior
        quarter. Cost of revenue for the second quarter of 2004 as
        well as the first and second quarters of 2005 includes a
        benefit of $234,000, $118,000, and $169,000, respectively,
        relating to an inventory reserve recorded in the fourth
        quarter of 2001. Excluding this benefit, gross margin would
        have been 70% in the second quarter of 2005, 70% in the second
        quarter of 2004, and 68% in the prior quarter. The increase in
        gross margin on a sequential basis is due to the higher
        revenue in the second quarter.

    --  Research, Development & Engineering (R, D & E) spending in the
        second quarter of 2005 increased 8% from the comparable
        quarter in 2004 and 14% from the prior quarter. The
        year-on-year and sequential increases are due primarily to the
        new employees added from the acquisition of DVT during the
        second quarter of 2005.

    --  Selling, General & Administrative (S, G & A) spending in the
        second quarter of 2005 increased 22% from the second quarter
        of 2004, and increased 23% on a sequential basis. The increase
        year-on-year is due to additional end-user sales personnel
        hired by Cognex as well as costs from the DVT acquisition,
        including new employees and the amortization of
        acquisition-related costs (which were approximately $660,000
        pre-tax in the quarter). The sequential increase is due to
        higher marketing communication costs and company bonuses in
        the second quarter as well as the incremental DVT costs.

    --  The company reported a foreign currency loss of $291,000 in
        the second quarter of 2005 compared to a loss of $50,000 in
        the comparable quarter of 2004 and a gain of $99,000 in the
        prior quarter. The company recognizes foreign currency gains
        and losses on the revaluation and settlement of accounts
        receivable and payable balances that are reported in one
        currency and collected or paid in another.

    --  Investment and other income was $973,000 in the second quarter
        of 2005 compared to $1,031,000 in the second quarter of 2004
        and $1,470,000 in the prior quarter. The decrease in
        investment and other income, both year-on-year and
        sequentially, is due to a lower average cash and investment
        balance in the second quarter of 2005 due to the acquisition
        of DVT during the quarter for approximately $115,000,000 in
        cash.

    --  The effective tax rate was 26% in the second quarter of 2005
        as compared to 29% in the comparable quarter of 2004 and 26%
        in the prior quarter. The decrease in the effective tax rate
        year-on-year is due to more of the company's profits being
        earned and taxed in lower tax jurisdictions in 2005 than in
        2004.

    Balance Sheet Highlights - July 3, 2005

    --  Cognex's financial position at July 3, 2005 was very strong,
        with over $285,000,000 in cash and investments, and no debt.
        Cash and investments decreased by nearly $106,000,000 from the
        end of 2004 as the company paid out approximately $115,000,000
        of cash in the second quarter to acquire DVT Corporation.
        During the first half of 2005, Cognex generated positive cash
        flow from operations of nearly $13,000,000 and paid out over
        $7,400,000 in dividends. Cumulative to date, the company has
        paid out nearly $70,000,000 in repurchases of its common stock
        on the open market and $25,000,000 in dividends.

    --  Days sales outstanding (DSO) for the second quarter of 2005
        was 59 days, and remains within the company's targeted range.

    --  Inventories at July 3, 2005 increased by $258,000, or 1%, from
        the end of the prior quarter and inventory turns in the second
        quarter improved to a rate equivalent to 3.6 times per year.

    Business Trends and Financial Outlook

    Bookings:

    --  For the second quarter of 2005, bookings increased by 15% on a
        sequential basis (4% excluding DVT) and the company's
        book-to-bill ratio was above 1.0. This increase was primarily
        due to higher demand from discrete manufacturers in the
        factory automation area (where bookings increased by 31%, or
        10% excluding DVT) and from customers who make capital
        equipment for the semiconductor and electronics industries
        (where bookings increased by 21%). Although orders for
        SmartView declined from the prior quarter's record, the second
        quarter of 2005 represented the second highest level for that
        product line.

    Financial Outlook

    --  For the third quarter of 2005, Cognex expects revenue to
        increase on a sequential basis to between $57 million and $60
        million. At that revenue level, gross margin is expected to be
        in the low-to-mid 70% range. For the third quarter, operating
        expenses (R, D & E and S, G & A) are expected to increase by
        5% to 10% on a sequential basis. The effective tax rate is
        expected to be 26%. As a result of the above, earnings for the
        third quarter are expected to be between $0.19 and $0.23 per
        diluted share.

    Analyst Conference Call and Simultaneous Webcast

    Cognex will host a conference call to discuss its results for the
second quarter of 2005, as well as its financial outlook, today at
5:00 p.m. eastern time. The telephone number for the live call is
800-770-5589 (or 973-935-2039 if outside the U.S.). A replay will
begin tonight at approximately 7:00 p.m. eastern time and will run
continuously for 72 hours. The telephone number for the replay is
877-519-4471 (or 973-341-3080 if outside the U.S.) and the access code
is 6156886.
    Internet users can listen to a real-time audio broadcast of the
conference call, as well as an archive replay of the call, on Cognex's
website at http://www.cognex.com/investor/default.asp.

    About Cognex Corporation

    Cognex Corporation designs, develops, manufactures, and markets
machine vision systems, or computers that can "see." Cognex is the
world's leader in the machine vision industry, having shipped more
than 250,000 machine vision systems, representing over $1.8 billion in
cumulative revenue, since the company's founding in 1981. Cognex's
Modular Vision Systems Division, headquartered in Natick,
Massachusetts, specializes in machine vision systems that are used for
automating the manufacture of a wide range of discrete items and for
assuring their quality. Cognex's Surface Inspection Systems Division,
headquartered in Alameda, California, specializes in machine vision
systems that are used for inspecting the surfaces of products
manufactured in a continuous fashion, such as metals, papers and
plastics. In addition to its corporate headquarters in Natick,
Massachusetts, Cognex has regional offices and distributors located
throughout North America, Japan, Europe, and Southeast Asia. Visit
Cognex on-line at http://www.cognex.com.

    Forward-Looking Statement

    Certain statements made in this press release and its attachments,
which do not relate solely to historical matters, are forward-looking
statements. You can identify these forward-looking statements by use
of the words "expects," "anticipates," "estimates," "believes,"
"projects," "intends," "plans," "will," "may," "shall" and similar
words. These forward-looking statements, which include statements
regarding business trends and the company's financial outlook, involve
risks and uncertainties that could cause actual results to differ
materially from those projected. Such risks and uncertainties include:
(1) global economic conditions that impact the capital spending trends
of manufacturers in a variety of industries; (2) the cyclicality of
the semiconductor and electronics industries; (3) the inability to
achieve significant international revenue; (4) fluctuations in foreign
exchange rates; (5) the loss of, or significant curtailment of
purchases by, any one or more principal customers; (6) the reliance
upon certain sole source suppliers to manufacture and deliver critical
components for the company's products; (7) challenges in integrating
acquisitions and achieving anticipated benefits; and (8) the other
risks detailed in the company's reports filed with the SEC, including
the company's Form 10-K for the fiscal year ended December 31, 2004.
You should not place undue reliance upon any such forward-looking
statements, which speak only as of the date made. The company
disclaims any obligation to update forward-looking statements after
the date of such statements.


Exhibit 1

                          COGNEX CORPORATION
       Statements of Operations - Including DVT From May 9, 2005
               (In thousands, except per share amounts)


                             Three Months Ended     Six Months Ended
                          July 3,  April 3, July 4,  July 3,  July 4,
                           2005     2005     2004     2005     2004
                          --------------------------------------------
                                 (unaudited)            (unaudited)

Revenue                   $54,603  $43,198  $54,467   97,801  102,636

Cost of revenue            16,065   13,790   15,905   29,855   30,694
                          -------- -------- -------- -------- --------

Gross margin               38,538   29,408   38,562   67,946   71,942
     Percentage of revenue     71%      68%      71%      69%      70%

Research, development, and
 engineering expenses       7,185    6,315    6,655   13,500   13,553
     Percentage of revenue     13%      15%      12%      14%      13%

Selling, general, and
 administrative expenses   21,494   17,508   17,568   39,002   33,882
     Percentage of revenue     39%      41%      32%      40%      33%
                          -------- -------- -------- -------- --------

Operating income            9,859    5,585   14,339   15,444   24,507
     Percentage of revenue     18%      13%      26%      16%      24%

Foreign currency gain
 (loss)                      (291)      99      (50)    (192)     575

Investment and other
 income                       973    1,470    1,031    2,443    2,305
                          -------- -------- -------- -------- --------

Income before taxes        10,541    7,154   15,320   17,695   27,387

Income tax provision        2,741    1,860    4,442    4,601    7,942
                          -------- -------- -------- -------- --------

Net income                 $7,800   $5,294  $10,878  $13,094  $19,445
     Percentage of revenue     14%      12%      20%      13%      19%
                          ======== ======== ======== ======== ========

Net income per diluted
 common and common
 equivalent share           $0.17    $0.11    $0.23    $0.28    $0.41
                          ======== ======== ======== ======== ========

Diluted weighted-average
 common and common
 equivalent shares
 outstanding               47,141   47,181   47,241   47,269   47,317
                          ======== ======== ======== ======== ========

Cash dividends per common
 share                      $0.08    $0.08    $0.06     0.16    $0.12
                          ======== ======== ======== ======== ========


Exhibit 2

                          COGNEX CORPORATION
               Statements of Operations - Excluding DVT
               (In thousands, except per share amounts)


                             Three Months Ended     Six Months Ended
                          July 3,  April 3, July 4,  July 3,  July 4,
                           2005     2005     2004     2005     2004
                          --------------------------------------------
                                  (unaudited)           (unaudited)

Revenue                   $49,142  $43,198  $54,467   92,340  102,636

Cost of revenue            14,896   13,790   15,905   28,686   30,694
                          -------- -------- -------- -------- --------

Gross margin               34,246   29,408   38,562   63,654   71,942
     Percentage of revenue     70%      68%      71%      69%      70%

Research, development, and
 engineering expenses       6,564    6,315    6,655   12,879   13,553
     Percentage of revenue     13%      15%      12%      14%      13%

Selling, general, and
 administrative expenses   18,578   17,508   17,568   36,086   33,882
     Percentage of revenue     38%      41%      32%      39%      33%
                          -------- -------- -------- -------- --------

Operating income            9,104    5,585   14,339   14,689   24,507
     Percentage of revenue     19%      13%      26%      16%      24%

Foreign currency gain
 (loss)                      (291)      99      (50)    (192)     575

Investment and other
 income                       967    1,470    1,031    2,437    2,305
                          -------- -------- -------- -------- --------

Income before taxes         9,780    7,154   15,320   16,934   27,387

Income tax provision        2,456    1,860    4,442    4,316    7,942
                          -------- -------- -------- -------- --------

Net income                 $7,324   $5,294  $10,878  $12,618  $19,445
     Percentage of revenue     15%      12%      20%      14%      19%
                          ======== ======== ======== ======== ========

Net income per diluted
 common and common
 equivalent share           $0.16    $0.11    $0.23    $0.27    $0.41
                          ======== ======== ======== ======== ========

Diluted weighted-average
 common and common
 equivalent shares
 outstanding               47,141   47,181   47,241   47,269   47,317
                          ======== ======== ======== ======== ========

Cash dividends per common
 share                      $0.08    $0.08    $0.06     0.16    $0.12
                          ======== ======== ======== ======== ========

Exhibit 3

                          COGNEX CORPORATION
               Statements of Operations Reconciliation -
                    Including DVT From May 9, 2005
               (In thousands, except per share amounts)

                    Three Months Ended          Six Months Ended
                       July 3, 2005               July 3, 2005
                 ------------------------- ---------------------------
                  Cognex                    Cognex
                 Excluding  DVT   Consol-  Excluding  DVT     Consol-
                    DVT           idated      DVT             idated
                 ------------------------- ---------------------------
                        (unaudited)               (unaudited)

Revenue          $49,142  $5,461  $54,603    92,340  5,461     97,801

Cost of revenue   14,896   1,169   16,065    28,686  1,169     29,855
                 -------- ------- -------- --------- ------ ----------

Gross margin      34,246   4,292   38,538    63,654  4,292     67,946
     Percentage
      of revenue      70%     79%      71%       69%    79%        69%

Research,
 development, and
 engineering
 expenses          6,564     621    7,185    12,879    621     13,500
     Percentage
      of revenue      13%     11%      13%       14%    11%        14%

Selling, general,
 and
 administrative
 expenses         18,578   2,916   21,494    36,086  2,916     39,002
     Percentage
      of revenue      38%     53%      39%       39%    53%        40%
                 -------- ------- -------- --------- ------ ----------

Operating income   9,104     755    9,859    14,689    755     15,444
     Percentage
      of revenue      19%     14%      18%       16%    14%        16%

Foreign currency
 gain (loss)        (291)      -     (291)     (192)     -       (192)

Investment and
 other income        967       6      973     2,437      6      2,443
                 -------- ------- -------- --------- ------ ----------

Income before
 taxes             9,780     761   10,541    16,934    761     17,695

Income tax
 provision         2,456     285    2,741     4,316    285      4,601
                 -------- ------- -------- --------- ------ ----------

Net income        $7,324    $476   $7,800   $12,618   $476    $13,094
     Percentage
      of revenue      15%      9%      14%       14%     9%        13%
                 ======== ======= ======== ========= ====== ==========

Net income per
 diluted common
 and common
 equivalent
 share             $0.16            $0.17     $0.27             $0.28
                 ========         ======== =========        ==========

Diluted weighted
 -average common
 and common
 equivalent
 shares
 outstanding      47,141           47,141    47,269            47,269
                 ========          ======== =========       ==========

Cash dividends
 per common share  $0.08            $0.08      0.16              0.16
                 ========         ======== =========        ==========


Exhibit 4

                          COGNEX CORPORATION
            Balance Sheets - Including DVT at July 3, 2005
                            (In thousands)

                                             July 3,     December 31,
                                              2005           2004
                                           ------------ --------------
                                           (unaudited)
Assets

Cash and investments                          $285,490       $391,076

Accounts receivable                             36,283         33,816

Inventories                                     18,057         20,091

Property, plant, and equipment                  24,216         23,995

Other assets                                   168,064         64,330
                                           ------------ --------------

Total assets                                  $532,110       $533,308
                                           ============ ==============


Liabilities and Stockholders' Equity

Current liabilities                            $58,967        $70,501

Stockholders' equity                           473,143        462,807
                                           ------------ --------------

Total liabilities and stockholders' equity    $532,110       $533,308
                                           ============ ==============


Exhibit 5

                          COGNEX CORPORATION
   Additional Information Schedule - Including DVT From May 9, 2005
                        (Dollars in thousands)


                             Three Months Ended      Six Months Ended
                         July 3,  April 3, July 4,  July 3,   July 4,
                          2005     2005     2004     2005      2004
                         -------------------------- ------------------
                               (unaudited)              (unaudited)

Revenue                  $54,603  $43,198  $54,467  $97,801  $102,636
                         ======== ======== ======== ======== =========

Revenue by division:
  Modular Vision Systems
   Division                   83%      84%      85%      83%       86%
  Surface Inspection
   Systems Division           17%      16%      15%      17%       14%
                         -------- -------- -------- -------- ---------
  Total                      100%     100%     100%     100%      100%
                         ======== ======== ======== ======== =========

Revenue by geography:
  United States               37%      37%      31%      37%       30%
  Europe                      31%      29%      22%      30%       24%
  Japan                       26%      28%      41%      27%       41%
  Other                        6%       6%       6%       6%        5%
                         -------- -------- -------- -------- ---------
  Total                      100%     100%     100%     100%      100%
                         ======== ======== ======== ======== =========

Revenue by market:
  Discrete factory
   automation                 60%      57%      41%      57%       41%
  Semiconductor and
   electronics capital
   equipment                  23%      27%      44%      26%       45%
  Surface inspection          17%      16%      15%      17%       14%
                         -------- -------- -------- -------- ---------
  Total                      100%     100%     100%     100%      100%
                         ======== ======== ======== ======== =========

Revenue by product:
  Vision sensors              41%      37%      27%      39%       28%
  PC-based vision systems     35%      39%      50%      37%       50%
  Surface inspection
   vision systems             13%      10%      11%      12%       10%
  Service                     11%      14%      12%      12%       12%
                         -------- -------- -------- -------- ---------
  Total                      100%     100%     100%     100%      100%
                         ======== ======== ======== ======== =========


    CONTACT: Cognex Corporation
             Susan Conway, 508-650-3353
             Director of Investor Relations