Optics: image projectors – Miscellaneous
Patent
1978-05-08
1980-02-05
Shepperd, John W.
Optics: image projectors
Miscellaneous
353 30, 353 94, 356376, G03B 2102, G01B 1124
Patent
active
041870115
ABSTRACT:
A plurality of projectors are positioned in spaced relationship about an object with a surface to be geometrically analyzed. The projectors have cooperating masks which project onto the object illuminated patterns that subdivide the object into predetermined sections. Each mask has a predetermined pattern of sections, and is applied in sequence. The masks are cooperatively illuminated in the projectors, with a separate pattern prevailing on the object each time that a separate mask is illuminated. The combinations of the patterns on the masks define closely-spaced sections subdividing the object. The patterns are coded so that each section is uniquely defined in coded form. Cameras having the entire object within their field of view, photograph the object each time a separate mask is illuminated. The patterns or sections are generated by parallel lines projected through a mask onto the object.
REFERENCES:
patent: 891013 (1903-06-01), Smith
patent: 1382978 (1921-06-01), Hopkins
patent: 3318855 (1967-05-01), Kott
patent: 3472587 (1969-10-01), Liguori
patent: 3866052 (1975-02-01), Di Matteo et al.
patent: 3988059 (1976-10-01), Johnson
Di Matteo Paul L.
Ross Joseph A.
Stern Howard K.
Waszak Lawrence
Fogiel Max
Shepperd John W.
Solid Photography Inc.
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