Optical light pen

Details Optical light pen Optical light pen

1975-02-05

1980-01-08

Moore, David K.

Radiant energy

Photocells; circuits and apparatus

Housings

250227, 250568, H01J 502

Patent

active

041829565

ABSTRACT:
The pen comprises an elongated housing having a light aperture at one end. A plurality of light-emitting diodes is mounted in the housing, and means are provided for focusing the light from such diodes at the light aperture. In use, the pen is held against a coded label and moved therealong. Light from the light-emitting diodes strikes the coded information, so as to produce a light pattern. Lenses in the housing focus the reflected light onto a detector which produces electrical signals in accordance with the light pattern.

REFERENCES:
patent: 3247391 (1966-04-01), Ogle et al.
patent: 3465158 (1969-09-01), Foerster
patent: 3509353 (1970-04-01), Sundblad et al.
patent: 3561846 (1971-02-01), Kingsland
patent: 3716699 (1973-02-01), Eckert et al.
patent: 3727030 (1973-04-01), McMurtry
patent: 3819938 (1974-06-01), Kornrumpf et al.
patent: 3868514 (1975-02-01), Israelsson

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