Optics: measuring and testing – By configuration comparison – With photosensitive film or plate
Patent
1978-08-24
1980-03-11
Corbin, John K.
Optics: measuring and testing
By configuration comparison
With photosensitive film or plate
356376, G01B 1110
Patent
active
041926137
ABSTRACT:
Apparatus for detecting contours and measuring dimensions of an object employs a plurality of light transmitting means for transmitting a scan of an equal plurality of light rays, and also employs an equal plurality of light receiving means, each arranged to receive light from only a complementary one of the light transmitting means. The object is moved through the light rays such that the object prevents the light receiving means from receiving light shining on one side of the contours of the object. Counter means are employed for counting the number of light receiving means which receive light from corresponding light transmitting means. The light transmitting means and light receiving means are disposed in a configuration enabling a more sensitive detection of the contours yet avoiding the risk of "cross-talk" between adjacent light receivers.
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patent: 3555288 (1971-01-01), Morenius
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patent: 3724958 (1973-04-01), Callen
patent: 3730632 (1973-05-01), Chikama
patent: 3806253 (1974-04-01), Denton
patent: 3941485 (1976-03-01), Madden
Corbin John K.
Rosenberger R. A.
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