发明名称 |
OPTICAL DETECTION DEVICE, AND APPARATUS USING SAME |
摘要 |
<p>Each lens of a multi-segment lens is a Fresnel lens in which a second surface, being the reverse side surface of a first surface, has a plurality of lens surfaces. At least one of the plurality of lens surfaces is configured from a part of a side surface of an elliptical cone having a central axis oblique to a normal line of the first surface. Any normal line intersecting with the lens surface configured from the part of the side surface of the elliptical coneamong normal lines of respective points on the first surface is non-parallel to a central axis of the elliptical cone corresponding to the lens surface with which the any normal line intersects.(Figure 1A)</p> |
申请公布号 |
SG187003(A1) |
申请公布日期 |
2013.02.28 |
申请号 |
SG20130001805 |
申请日期 |
2011.12.21 |
申请人 |
PANASONIC CORPORATION |
发明人 |
OI, KANA;NISHIKAWA, TAKAYUKI |
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代理机构 |
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