Optical inspection method and apparatus

Details Optical inspection method and apparatus Optical inspection method and apparatus

1997-04-16

1999-04-06

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

35023747, G01N 2188

Patent

active

058925791

ABSTRACT:
This invention discloses an apparatus for optically inspecting an object having upper and lower faces for indicating the condition of the object, including a lighting system periodically reflecting a beam of light from one face of the object to produce a series of short-duration time-spaced reflected beams, and periodically transmitting a beam of light through both faces of the object to produce a series of short-duration time-spaced transmitted beams time-interlaced with the reflected beams, a sensor sensing the short-duration time-spaced reflected beams and transmitted beams, and generating electrical outputs corresponding thereto, and a processor receiving the electrical outputs and processing them to provide an indication of the condition of the object.
A method of optically inspecting an object having upper and lower faces for indicating the condition of the object is also described.

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