Optical lens system and position measurement system using...

Details Optical lens system and position measurement system using... Optical lens system and position measurement system using...

2007-08-13

2009-02-10

Lyons, Michael A (Department: 2877)

Optics: measuring and testing

By light interference

For dimensional measurement

C359S581000, C359S663000

Reexamination Certificate

active

07489406

ABSTRACT:
An optical lens system includes a lens surface capable of forming concentric interference patterns on an object as if light emitted from a single light source were virtually emitted from two or more light sources within a plane containing an optical axis of the single light source.

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