Optical position measuring device

Details Optical position measuring device Optical position measuring device

1997-04-24

1999-10-05

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

250237G, G01B 1100

Patent

active

059633301

ABSTRACT:
An optical position measuring device, in particular for a drive for precise positioning, is recited, which comprises two drive units which are movable in respect to each other, wherein one of the two drive units has a graduation as an integral component. The latter can be scanned by a scanning unit connected with the other drive unit for generating position-dependent output signals. The graduation is directly or indirectly disposed on a level surface of the drive unit, from which a distance between the two drive units is created in such a way that by the cooperation of the two drive units the generation of a defined relative movement between the two drive units is possible.

REFERENCES:
patent: 5324934 (1994-06-01), Clark

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