Optics: measuring and testing – By configuration comparison
Patent
1998-11-03
1999-11-30
Font, Frank G.
Optics: measuring and testing
By configuration comparison
356383, 356386, 356445, G01B 1102
Patent
active
059952318
ABSTRACT:
The present invention provides a method for altering the light traveling distance in an optical scanning module using transparent glass. The optical scanning module comprises a transparent glass module that refracts light to alter the traveling distance of the light as it passes from the document to the optical sensing device. The proper thickness of this transparent glass module is specifically chosen to correctly calibrate the error of the traveling distance of the light created during the manufacturing of the scanner.
REFERENCES:
patent: 5242567 (1993-09-01), Fujimiya et al.
patent: 5323219 (1994-06-01), Hamanaka et al.
Chang Te-Chih
Chen Bill
Tsai Jern-Tsair
Font Frank G.
Hsu Winston
Mustek Systems Inc.
Ratcliff Reginald A.
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