Document illuminator with stepped optical element

Details Document illuminator with stepped optical element Document illuminator with stepped optical element

2006-04-21

2008-12-23

Ton, Anabel M (Department: 2885)

Illumination

Light source and modifier

Including reflector

C362S610000

Reexamination Certificate

active

07467879

ABSTRACT:
An apparatus for scanning a document comprises a platen for supporting at least a portion of the document; a light source; and an optical element for directing light from the light source to the platen. The optical element defines a plurality of small planar surfaces, the small planar surfaces being arranged in a linear array. Light emanating from a source is reflected from one of the small planar surfaces and emerges substantially perpendicular to an exit surface.

REFERENCES:
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patent: 5590945 (1997-01-01), Simms
patent: 6193383 (2001-02-01), Onikiri et al.
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patent: 6305813 (2001-10-01), Lekson et al.
patent: 2003/0081275 (2003-05-01), Shishido
patent: 2004/0131157 (2004-07-01), Stevanovic et al.
patent: 2005/0248959 (2005-11-01), Chiou
patent: 2005/0265684 (2005-12-01), Nemoto et al.

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