Lighting apparatus and image reading apparatus
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United States of America Patent
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Feb 13, 2018
Issued Date -
N/A
app pub date -
Mar 3, 2015
filing date -
Mar 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A lighting apparatus includes a first illumination portion and a second illumination portion. The first illumination portion and the second illumination portion respectively include a bar-like light guide whose shape of an end face of an end portion includes a part of a circle, an ellipse or a parabola, and light source elements that are provided to face the end face of the end portion of the light guide. In the light guide of the second illumination portion, light enters a determined range in which a focus of the shape of the end face of the end portion of the light guide is included. In the light guide of the first illumination portion, light enters a range that is not the determined range in which the focus of the shape of the end face of the light guide is included.
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