Method and device for quality control of objects with polarized

Details Method and device for quality control of objects with polarized Method and device for quality control of objects with polarized

1995-09-21

1997-07-15

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

Of surface reflection

356 33, G01N 2121

Patent

active

056488505

ABSTRACT:
The invention pertains to a method and a device for carrying out the quality control of an object (10) that comprises at least one transparent layer (18). According to this method and this device, at least one light beam (41) of a light source (42) is projected onto the object (10) at an angle (.alpha.) and is received by at least one photosensitive receiver (53). According to the invention, it is proposed that the light beam that emerges from the object be split before it is projected onto the first photosensitive receiver (53), with part of the light beam being deflected in the direction toward a second photosensitive receiver (62). This measure makes it possible to expose simultaneously two different photosensitive receivers (53, 62) so as to display different defects of an object (10).

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1 page Abstract of DE 3515602 in English Language.
1 page Abstract of DE 3803181 in English Language.

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