Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1983-07-28
1986-03-11
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250237R, 356375, 356394, G01B 1100
Patent
active
045756376
ABSTRACT:
A simplified object or piece-part positioning system for use with automated product assembly equipment for positioning piece-parts in a predetermined orientation for product assembly purposes. The system includes a support surface coupled to a drive source that is capable of moving the support surface in any direction along a given plane and/or about an axis perpendicular to the given plane in response to drive source positioning signals. The system also includes a part-position sensing module comprising a generally planar array of photosensitive elements electrically divided into a plurality of groups and positioned to sense light from a light source that backlights the piece-part to be positioned located on the movable table, for the purpose of determining any deviation of the photosensitive array sensed shadow of the piece-part from a slightly enlarged piece-part image in order to generate electrical signals representative of such deviation and subsequently employ these signals to cause the drive source to position or overlay the piece-part shadow and indirectly the piece-part within the outline of the enlarged piece-part image in response to piece-part deviation signals generated by the photosensitive element array.
REFERENCES:
patent: 3299273 (1967-01-01), Sturdevant
patent: 3544801 (1970-12-01), Dyck
patent: 3670153 (1972-06-01), Rempert et al.
patent: 3723013 (1973-03-01), Stirland et al.
patent: 4171161 (1979-10-01), Jung
patent: 4203064 (1980-05-01), Suzuki et al.
patent: 4217053 (1980-08-01), Lavanchy et al.
patent: 4286201 (1981-08-01), Roecks et al.
patent: 4333044 (1982-06-01), Blitchington
Kelleher John J.
Polaroid Corporation
Westin Edward P.
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