Electro-optical bar-code scanning unit

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system


Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


235 6111E, 250235, G06K 710




An electro-optical scanning unit adapted to sense a bar-code pattern and to generate digital signals corresponding thereto. In the unit, an incandescent light source acts to illuminate a narrow slit, and a reduced image thereof is optically projected to produce a luminous scanning line in a focal plane. An oscillating scanning mechanism interposed in the projection path causes the luminous line to sweep back and forth. The focal plane lies within a window formed in a channel dimensioned to receive an item bearing a bar-code pattern and to locate this pattern so that the bars lie in parallel relation to the luminous line, whereby when the line is swept across the pattern and is reflected thereby, the resultant light pulses are directed toward a photo-detector and converted to corresponding digital signals.

patent: 3662181 (1972-05-01), Hercher et al.
patent: 3758783 (1973-09-01), Sick et al.
patent: 3806706 (1974-04-01), Hasslinger et al.
patent: 3919527 (1975-11-01), Bowen et al.
patent: 3928759 (1975-12-01), Sansone


Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.


Electro-optical bar-code scanning unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electro-optical bar-code scanning unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-optical bar-code scanning unit will most certainly appreciate the feedback.

Rate now


Profile ID: LFUS-PAI-O-579600

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.