Method of producing a light source compensating element

Details Method of producing a light source compensating element Method of producing a light source compensating element

2005-08-09

2005-08-09

Lee, Cheukfan (Department: 2622)

Facsimile and static presentation processing

Facsimile

Picture signal generator

Reexamination Certificate

active

06927882

ABSTRACT:
This invention discloses a method of producing a light source compensating element for adjusting the brightness distribution of light projected from a light source of a scanner onto a scanned object. The light source compensating element produced in accordance with this invention can be arranged between the scanner light source and the scanned object, thereby obtaining an even (or uniform) brightness distribution on the scanned object. In addition, compensating element with specific transmittance distribution can also be produced and placed between the light source of the scanner and the scanned object, whereby the light emitted from the light source through the compensating element has a specific brightness distribution on the scanned object.

REFERENCES:
patent: 4845570 (1989-07-01), Uchiyama
patent: 4897730 (1990-01-01), Iwahara et al.
patent: 5535021 (1996-07-01), Chiang et al.
patent: 5798849 (1998-08-01), Tsai
patent: 6447963 (2002-09-01), Wakasono
patent: 6587288 (2003-07-01), Erz et al.
patent: 6790583 (2004-09-01), Kawazu

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