<SEC-DOCUMENT>0001193125-18-061203-index.html : 20180227
<SEC-HEADER>0001193125-18-061203.hdr.sgml : 20180227
<ACCEPTANCE-DATETIME>20180227173109
ACCESSION NUMBER:		0001193125-18-061203
CONFORMED SUBMISSION TYPE:	PRE 14A
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20180425
FILED AS OF DATE:		20180227
DATE AS OF CHANGE:		20180227

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGNEX CORP
		CENTRAL INDEX KEY:			0000851205
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				042713778
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		PRE 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34218
		FILM NUMBER:		18646651

	BUSINESS ADDRESS:	
		STREET 1:		ONE VISION DR
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
		BUSINESS PHONE:		5086503000

	MAIL ADDRESS:	
		STREET 1:		ONE VISION DRIVE
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
</SEC-HEADER>
<DOCUMENT>
<TYPE>PRE 14A
<SEQUENCE>1
<FILENAME>d523299dpre14a.htm
<DESCRIPTION>PRE 14A
<TEXT>
Document 1 - file: d523299dpre14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g523299im1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g523299im1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g523299im2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g523299im2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g523299im3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g523299im3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g523299im4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g523299im4.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g523299pc_pg01c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g523299pc_pg01c.jpg

</DOCUMENT>
</SEC-DOCUMENT>