发明名称 |
OPTICAL DEFLECTION ELEMENT, LIGHTED SWITCH USING THE SAME, AND SURFACE LIGHT SOURCE DEVICE USING THE SAME |
摘要 |
PROBLEM TO BE SOLVED: To provide an optical deflection element adaptable to a larger light-emitting area and having a high uniformity of luminance in a light emitting surface.SOLUTION: An optical control plate 31 has a light incident-side surface and a light emission-side surface opposing to each other. A light incident area 32 is formed on the light incident-side surface. Formed in an area opposing to the light incident area 32 of a light emission surface 28 are deflection patterns 52, which have a plurality of inclined planes inclined in a circumferential direction about the optical axis of light incident on the light incident area 32, spaced from each other and in a radial shape with the optical axis as a center. A light guide area 37 for guiding light in an outer peripheral direction is formed on an outer peripheral side of the light incident area 32 between the light incident-side surface and the light emission-side surface. |
申请公布号 |
JP2014022126(A) |
申请公布日期 |
2014.02.03 |
申请号 |
JP20120158149 |
申请日期 |
2012.07.13 |
申请人 |
OMRON CORP |
发明人 |
TSUKANAKA YOHEI;TAGAMI YASUHIRO;SHINOHARA MASAYUKI |
分类号 |
F21V5/04;F21S2/00;F21V5/00;F21Y101/02;G02B3/00;G02B13/18;G02B17/08;G02F1/13357 |
主分类号 |
F21V5/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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