Light guide plate, light source device, light guide plate manufacturing apparatus, and method for manufacturing light guide plate
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United States of America Patent
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Jan 30, 2018
Issued Date -
N/A
app pub date -
Jul 19, 2013
filing date -
Jul 27, 2012
priority date (Note) -
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Abstract
A light guide plate according to the present invention includes a light guide member having a first and second main surfaces and a diffusing member next to at least one of the first and second main surfaces of the light guide member. A plurality of recesses are formed in one of the two main surfaces of the diffusing member that is opposite to the main surface next to the light guide member to diffuse light incident to the light guide member at the recesses. The recesses may include a first recess and a second recess. Preferably, when viewing the first main surface of the light guide member in a normal direction, a distance between a light incident surface and the second recess is greater than that between the light incident surface and the first recess, and the second recess is larger than the first recess.
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