Method of adjusting depth-of-field in laser scanners by dynamica

Details Method of adjusting depth-of-field in laser scanners by dynamica Method of adjusting depth-of-field in laser scanners by dynamica

1996-01-02

1998-11-10

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

372 29, 372 38, G01J 132, H01S 310

Patent

active

058347607

ABSTRACT:
Methods of controlling the power level of a pulsed laser beam being used to scan barcodes and the like in order to increase the depth-of-field. The pulses may comprise a plurality of pulses above and below a maximum legal power level so that, on average, the power output is below the legal limit. The sensor may be monitored for no-signal and over-signal conditions and the power of the laser beam adjusted accordingly.

REFERENCES:
patent: 3631250 (1971-12-01), Van Baskirk
patent: 4970379 (1990-11-01), Danstrom
patent: 5469089 (1995-11-01), Rothermel et al.
patent: 5528022 (1996-06-01), Nakazawa
patent: 5581068 (1996-12-01), Shepard et al.
patent: 5600125 (1997-02-01), Poorman et al.
patent: 5602861 (1997-02-01), Kawai et al.
patent: 5621205 (1997-04-01), Warner et al.
patent: 5635704 (1997-06-01), Del Signore, II et al.

Affiliated with

Also associated with

Rating

Method of adjusting depth-of-field in laser scanners by dynamica does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of adjusting depth-of-field in laser scanners by dynamica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of adjusting depth-of-field in laser scanners by dynamica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1518893