Illumination device and image reading apparatus

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United States of America Patent

PATENT NO 9083840
APP PUB NO 20140253982A1
SERIAL NO

14197787

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Abstract

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An illumination device and an image reading apparatus having improved heat resistance and spectral characteristics are provided. An illumination device used in an image reading apparatus that moves relative to a read area of a document includes: a light source; a light guide including an incident surface on which light from the light source is incident and an exit surface from which light from the light source exits; and a spectroscopic unit that is provided between the light source and the light guide and includes, on a surface of a glass substrate facing the light source, a multi-layer film for reflecting infrared light toward the light source.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashide, Tadao Utsunomiya, JP 27 216
Ito, Narumasa Utsunomiya, JP 6 34
Mitsutake, Ikutaro Utsunomiya, JP 9 19

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