05349172 is referenced by 252 patents and cites 7 patents.

The optical scanning head includes at least one trio of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. An optical module includes a light shield or "dark room" and a lens/filter assembly which provides control of the depth of focus of the scanner. The optical module is located behind the light source, and the detector, made up of a CCD array is mounted behind the optic module for detecting the light intensity in the reflected beam over a field of view across a bar code symbol. The CCD array generates an electrical signal indicative of the detected light intensity. A DC source or battery provides DC voltage to the LEDs and CCDs in response to a clocked signal which provides a gradual or sequential illumination of the LEDs and coordinates the activation of the CCDs in order to minimize power consumption during scans.

Title
Optical scanning head
Application Number
843266
Publication Number
5349172
Application Date
October 2, 1992
Publication Date
September 20, 1994
Inventor
Alex Roustaei
1696 Via Inspirar, San Marcos, 92069
CA, US
Agent
Brown Martin Haller & McClain
IPC
G06K 7/10
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