Illuminating device, image reading device, and image forming apparatus with multiple light sources

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United States of America Patent

PATENT NO 11936829
APP PUB NO 20230007140A1
SERIAL NO

17792536

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An illuminating device, an image reading device, and an image forming apparatus. The illuminating device includes a plurality of first light sources arrayed on a circuit board, the first light sources having a plurality of first light emitting surfaces through which light is emitted, and a second light source disposed on an upstream side of the first light sources in an irradiation direction of the light. In the illuminating device, the second light source has a second light emitting surface through which light is emitted, and the second light source has a directivity angle different from a directivity angle of each one of the first light sources. The image reading device includes the illuminating device, and an imaging device to receive the light reflected by a document to capture an image of the document.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTDTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Itoh, Masahiro Kanagawa, JP 114 1428
Nakazawa, Masamoto Kanagawa, JP 76 1702
Sugai, Atsushi Kanagawa, JP 22 62

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