Rod-shaped light guide and image reading device

Details Rod-shaped light guide and image reading device Rod-shaped light guide and image reading device

2011-08-02

2011-08-02

Lee, Cheukfan (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S475000, C358S482000, C358S483000, C358S474000

Reexamination Certificate

active

07990584

ABSTRACT:
A rod-shaped light guide reflects light incident on an end face thereof in the interior of the rod-shaped light guide and emits the light outside from a light emitting surface provided to extend in the longitudinal direction. The rod-shaped light guide includes: a scattering pattern surface provided to be opposite to the light emitting surface and operative to scatter the light incident on the end face; first and second lateral surfaces provided between the light emitting surface and the scattering pattern surface; and first and second projections provided to project from the first and second lateral surfaces, respectively, capture the light reflected by the light emitting surface, reflects the light toward the light emitting surface, and causes the light to be emitted outside from the light emitting surface.

REFERENCES:
patent: 5499112 (1996-03-01), Kawai et al.
patent: 6295141 (2001-09-01), Ogura et al.
patent: 2006-148501 (2006-06-01), None

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