Illumination apparatus and image reading apparatus

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United States of America Patent

PATENT NO 8982431
APP PUB NO 20140055827A1
SERIAL NO

13970318

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An illumination apparatus includes a light source, a light guide, and a holding member configured to hold the light source and to hold the light guide via a fixing member. Within a cross section including a plane normal direction of an exit surface of the light source and a plane normal direction of an entrance surface of the light guide, the plane normal direction of the entrance surface of the light guide or a direction within a surface of the light guide contacting the fixing member and the plane normal direction of the exit surface of the light source or a maximum intensity direction in light emission of the light source are inclined relative to each other such that a ray of light from the light source in the maximum intensity direction is refracted at the entrance surface of the light guide in a direction away from the fixing member.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mitsutake, Ikutaro Utsunomiya, JP 9 19

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