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System and Method for Determining and Controlling Focal Distance in a Vision System Camera
US 08576390 B1, Nov. 5, 2013, Laurens Nunnink / Cognex Corporation (Natick, US)
A system for determining focal distance of a lens assembly comprising:…

Patentorg has 1 document under Deflecting or Interrupting Optical Path Patents.

Other subcategories for category Optics: measuring and testing
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