Optical scanner with extended depth of focus

Details Optical scanner with extended depth of focus Optical scanner with extended depth of focus

1997-05-05

1998-09-29

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250566, 235472, 382313, G06K 500

Patent

active

058148272

ABSTRACT:
A scanner with an extended depth of focus for electro-optically reading indicia having parts of different light reflectivity, comprises a collection optical system for collecting radiation reflected from objects in the field of view along plural different optical axes and an optical detector for detecting radiation collected by the collection optical system along each of the plural different optical axes and for generating electrical output signals indicative thereof. The scanner further includes processing circuitry for processing the output signals of the optical detector by comparing the output signals of the optical detector with one another, a memory for storing the detector output signals and further processing circuitry receiving the stored output signals of the optical detector from the memory and selectively outputting one of the received signals to a decoder.

REFERENCES:
patent: 4603262 (1986-07-01), Eastman et al.
patent: 4818886 (1989-04-01), Drucker
patent: 5192856 (1993-03-01), Schaham
patent: 5210398 (1993-05-01), Metlitsky
patent: 5396053 (1995-03-01), Swartz et al.
patent: 5473149 (1995-12-01), Miwa et al.
patent: 5627366 (1997-05-01), Katz

Affiliated with

Also associated with

Rating

Optical scanner with extended depth of focus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical scanner with extended depth of focus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scanner with extended depth of focus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-687847