Laser scanner for bar code reader

Details Laser scanner for bar code reader Laser scanner for bar code reader

1986-09-23

1988-01-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

235462, G06K 710

Patent

active

047218606

ABSTRACT:
A laser scanner wherein an elliptical laser light beam is directed to the target (a bar code symbol) so as to increase the signal to noise ratio of the laser light received by the photodetector. The use of laser light in the shape of an ellipse, instead of the prior spherical shaped laser light, where the long axis of the elliptical laser light is aligned with the bars of the code being read reduces the distortion of the optical signals received by the photodetector. Thus the signal to noise ratio is maximized so as to enable the resolution of fine, dense bar codes.

REFERENCES:
patent: 3917414 (1975-11-01), Geis et al.
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4408120 (1983-10-01), Hara et al.
patent: 4496209 (1985-01-01), Itoh et al.

Affiliated with

Also associated with

Rating

Laser scanner for bar code reader does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser scanner for bar code reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser scanner for bar code reader will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1469349