- 专利标题: Light emitting device and illumination device
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申请号: US13328654申请日: 2011-12-16
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公开(公告)号: US08827501B2公开(公告)日: 2014-09-09
- 发明人: Hiroshi Takatori
- 申请人: Hiroshi Takatori
- 申请人地址: JP Kawaguchi
- 专利权人: Enplas Corporation
- 当前专利权人: Enplas Corporation
- 当前专利权人地址: JP Kawaguchi
- 代理机构: Washida IP Group, LLC
- 优先权: JP2010-283134 20101220
- 主分类号: F21V5/00
- IPC分类号: F21V5/00 ; F21V5/04 ; F21Y101/02 ; F21Y103/00 ; F21S4/00
摘要:
A light emitting device that can reduce the illuminance unevenness on an illuminated surface. First light flux controlling member 103 controls the distribution of light emitted from light emitting element 102. Second light flux controlling member 105 has second incidence surface 201 onto which the light emitted from first light flux controlling member 103 is incident and second emission surface 202 that is located on a side opposite to second incidence surface 201 and emits the light incident from second incidence surface 201. Also, at least one surface of second incidence surface 201 and second emission surface 202 refracts the light having an optical path on a virtual cross-section including optical axis P1 of light emitting element 102 and being incident onto second incidence surface 201 or second emission surface 202 more to the optical axis P1 side than when being incident onto a plane perpendicular to optical axis P1.
公开/授权文献
- US08882307B2 Light emitting device and illumination device 公开/授权日:2014-11-11
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