Illumination strobing in a scanner to improve image sharpness an

Details Illumination strobing in a scanner to improve image sharpness an Illumination strobing in a scanner to improve image sharpness an

1995-07-31

1998-04-28

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358473, 358475, G06K 710, H04N 104

Patent

active

057447950

ABSTRACT:
An optical scanner that employs a pulsed light source that is synchronized to the scan position by a position encoder and a pulse control system. Such a scanner has an improved image sharpness and improved image registration. Moreover, a pulsed light source in a scanner of the present invention is more efficient and uses less power, which results in various cost and power savings. Such a scanner is capable of operating off a smaller power source (battery) and is capable of running for longer periods of time off a battery than scanners with a light source that is on during the entire scanning process.

REFERENCES:
patent: 3770940 (1973-11-01), Harr
patent: 4703186 (1987-10-01), Nakayama et al.
patent: 4866276 (1989-09-01), Leavens et al.
patent: 5306908 (1994-04-01), McConica et al.
patent: 5381020 (1995-01-01), Kochis et al.

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