Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1987-11-16
1989-07-25
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250568, H01J 314, H01J 516, H01J 4014
Patent
active
048516678
ABSTRACT:
A compact optical scanning system comprises a portable enclosure structure having a cover portion which includes a glass enclosed aperture over which a UPC label attached to a purchased merchandise item is moved. Mounted within the enclosure is a laser whose output coherent light beam is reflected along a path extending in a direction parallel to the cover portion by mirrors and a bifocal lens member mounted on a shelf extending between opposite sidewalls of enclosure. One of the mirrors mounted on the shelf reflects the laser beam in a downward direction at a rotating multifaceted mirrored member mounted on and directly beneath the shelf and the bifocal lens. The rotating mirrored spinner directs the laser beam at a plurality of pattern mirrors which redirects the received laser beam towards the aperture, forming a scan pattern thereat for scanning the UPC label.
REFERENCES:
patent: 4097729 (1978-06-01), Seligman et al.
patent: 4710615 (1987-12-01), Meyers
patent: 4713532 (1987-12-01), Knowles
Collins, Jr. Donald A.
Detwiler Paul O.
Mergenthaler Barry M.
Chatman Eric F.
Hawk Jr. Wilbert
Lavin Richard W.
NCR Corporation
Nelms David C.
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