I would also be interested in information of this type..Catalogs, 
     brochures, etc...
     
     Dwight Nolen
     
     Manufacturing Quality Engineer/QA Supervisor
     Frontier Engineering


______________________________ Forward Header __________________________________
Subject: Assembly:Looking for optical Comparator
Author:  MIME:[log in to unmask] at INTERNET
Date:    3/6/97 8:55 PM


Does any know who makes an optical comparator for checking loaded boards? 
We are trying to locate and buy a comparator. The unit that we are 
interested in is a simple box with a light source and some mirrors that 
project images of boards onto a translucent plastic screen. The unit I 
remember seeing projected the image of a "golden board" onto a screen.  The
image of the test board was projected onto the same screen next to the image 
of the golden board.  When an opperator moved the test board both images 
converged and disapeared at the center line of the screen. The boards were 
positioned so that identical areas of each board crossed the centerline at 
the same time and disappeared.  This allowed an opperator to do a quick 
visual check of component placement.  If all of the components matched the 
golden board a perfect mirror image would be seen along the center line. Any 
misplaced components were easy to see.
     
Any help would be appreciated. Thanks.
     
Wendell Conner
Hughes Air Warfare Center Indy
     
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