Device having a field mirror for optically testing a surface

Details Device having a field mirror for optically testing a surface Device having a field mirror for optically testing a surface

2008-05-08

2009-12-22

Punnoose, Roy (Department: 2886)

Optics: measuring and testing

Of light reflection

C356S237200

Reexamination Certificate

active

07636164

ABSTRACT:
The invention generally relates to a compact, inexpensive-to-manufacture device consisting of few components for optically testing a surface. The zone on the surface that is to be investigated is illuminated by a semitransparent mirror and an aspheric field mirror, employing a telecentric optical train, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the lens of an electronic camera by the field mirror, via the semitransparent mirror. Images recorded by the camera are analyzed using known image-processing methods.

REFERENCES:
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Examination Report, DE 10 2007 022 831.9, dated Apr. 14, 2008.

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