Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1997-05-05
1998-10-06
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With light attenuation
356237, G01N 2100
Patent
active
058185933
ABSTRACT:
An improved lens for flaw highlighting light panels having at least one light colored translucent strip adjacent at least one dark colored opaque strip and a narrow reference strip which is luminescent or of intensified light and which extends across at least a portion of the dark colored opaque strip. The characteristics of the reflected light from the luminescent or intensified light reference strip makes the reference strip stand out more than a reference strip which is not luminescent or of intensified light thereby facilitating the detection of dents.
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Hugh W. Lippincott and Henry Stark; Optical-Digital Detection Of Dents And Scratches On Specular Metal Surfaces; Aug. 15, 1982; Applied Optics, vol. 21, No. 16, pp. 2875-2881.
Henry Pearson, Piping Lifht with Acrylic Materials, Modern Plastics, Aug. 1946, pp. 123-127.
Photographs of a dent highlighting panel which was in public use or on sale prior to May 23, 1993.
It's Dents Or Us, Inc.
Rosenberger Richard A.
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