发明名称 |
Illuminating lens, and lighting device |
摘要 |
An illuminating lens includes: a light entrance surface through which light emitted from a light source enters the lens; and a light exit surface through which the light that has entered the lens exits the lens. The light exit surface has: a concave portion intersecting the optical axis; and a convex portion provided around the concave portion to extend continuously from the concave portion. The light exit surface is formed in a shape such that a curvature C of micro-segments of the light exit surface in a cross section including the optical axis has a maximum value at a position outward from the midpoint of the convex portion.
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申请公布号 |
US8434911(B2) |
申请公布日期 |
2013.05.07 |
申请号 |
US201113341582 |
申请日期 |
2011.12.30 |
申请人 |
MATSUKI DAIZABURO;KIMURA SYUNSUKE;IIYAMA TOMOKO;PANASONIC CORPORATION |
发明人 |
MATSUKI DAIZABURO;KIMURA SYUNSUKE;IIYAMA TOMOKO |
分类号 |
F21V3/00;F21V5/00 |
主分类号 |
F21V3/00 |
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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