Apparatus and method for illumination of an optical platen

Details Apparatus and method for illumination of an optical platen Apparatus and method for illumination of an optical platen

2006-12-12

2006-12-12

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C382S124000

Reexamination Certificate

active

07148466

ABSTRACT:
An apparatus for optically imaging an object includes an optical platen having an object receiving surface. The object receiving surface is directly illuminated by a first light source, and is illuminated by total internal reflection by a second light source.

REFERENCES:
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patent: 5732148 (1998-03-01), Keagy et al.
patent: 5737439 (1998-04-01), Lapsley et al.
patent: 6175407 (2001-01-01), Sartor
patent: 6292576 (2001-09-01), Brownlee
patent: 2002/0131624 (2002-09-01), Shapiro

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