发明授权
- 专利标题: Lighting device having light source and reflector having ellipsoidal reflection surface
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申请号: US15006142申请日: 2016-01-26
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公开(公告)号: US10132471B2公开(公告)日: 2018-11-20
- 发明人: Henning Rehn
- 申请人: OSRAM GmbH
- 申请人地址: DE Munich
- 专利权人: OSRAM GmbH
- 当前专利权人: OSRAM GmbH
- 当前专利权人地址: DE Munich
- 代理机构: Viering Jentschura & Partner mbB
- 优先权: DE102015201300 20150126
- 主分类号: F21V13/04
- IPC分类号: F21V13/04 ; F21V5/04 ; F21V7/08 ; F21V11/10 ; G02B19/00 ; F21V7/00 ; F21V7/04 ; F21W131/406 ; F21Y101/00 ; F21Y115/10
摘要:
A lighting device includes a light source, a reflector having an ellipsoidal reflection surface, an aspherical lens, and an exit pupil. The source is arranged at a first focal point of the reflection surface and a part of the emitted light is reflected from the reflection surface in the direction of a second focal point. The pupil is arranged offset with respect to the second focal point. The lens is arranged between the reflection surface and the pupil in a beam path with the reflected light and is shaped such that a first part of the reflected light passes through the lens with an aperture angle altered by not more than 5° in a central region and passes through the pupil and a second part of the reflected light penetrates through the lens in an outer region and is deflected by the lens and is consequently guided through the pupil.
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