Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1999-05-03
2000-09-19
Font, Frank G.
Optics: measuring and testing
By polarized light examination
With light attenuation
356380, 356402, G01B 1124
Patent
active
061220620
ABSTRACT:
A 3-D camera system (10) includes a light source (12) and a grating (14) spaced at a predetermined distance from the light source (12). The light source (12) and grating (14) project a shadow of the grating (14) on an object (16). Images of the object (16) with the grating (14) shadows projected thereon are captured by a sensor (18) in a video camera (17). A processor (19) converts the images to a three dimensional bit map of the object (16). The light source (12) includes a plurality of at least three rows of light sources (20) defining a matrix (22) whereby different rows of the matrix (22) may be illuminated to produce different grating (14) shadows on the object (16).
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Atkinson et al., "A Novel Approach To Optical Range Finding", 1986, pp. 237-243.
Bieman Leonard H.
Rutledge Gary
Fanuc Robotics North America Inc.
Font Frank G.
Ratliff Reginald A.
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