Light source unit in which surface opposite to light emitting element of light guide is not covered and medium side surface of reflector protrudes from light guide

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United States of America Patent

PATENT NO 11729332
SERIAL NO

17473582

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An imaging device includes a light source unit located so as to be inclined with respect to a medium conveying surface or a medium placing surface. The light source unit includes a light emitting element, a light guide provided with the light emitting element on a first end surface side, to guide light emitted from the light emitting element in a predetermined direction, and emit the light toward the medium from an emitting surface extending in the predetermined direction, and a reflector located around the light guide other than the emitting surface. The light guide includes a light diffusing surface on an opposite side to the emitting surface. The reflector does not cover a second end surface opposite to the first end surface of the light guide. A medium side surface of the reflector is located so as to protrude from the second end surface of the light guide.

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Patent Owner(s)

  • PFU LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakano, Kengo Kahoku, JP 2 0
Yamada, Eiki Kahoku, JP 3 0

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