Optical information reading device

Details Optical information reading device Optical information reading device

1981-10-15

1984-05-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

369109, 369 45, H01J 4014

Patent

active

044477228

ABSTRACT:
An optical information reading device adapted to apply a light beam from a light source to an information carrier having information recorded thereon as convexities and concavities or variations in a light reflecting factor, and to receive the light reflected from the information carrier, thereby to read the information. A specific arrangement of optical elements such as a beam splitter, lens, and reflecting mirror enables the information reading device as a whole to be reduced in size particularly in length in the direction perpendicular to the plane of the information carrier.

REFERENCES:
patent: 4264986 (1981-04-01), Willis
patent: 4334300 (1982-06-01), Arquie et al.
patent: 4341953 (1982-07-01), Sakai et al.

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