Invention Grant
- Patent Title: Lighting device having light source and reflector having ellipsoidal reflection surface
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Application No.: US15006142Application Date: 2016-01-26
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Publication No.: US10132471B2Publication Date: 2018-11-20
- Inventor: Henning Rehn
- Applicant: OSRAM GmbH
- Applicant Address: DE Munich
- Assignee: OSRAM GmbH
- Current Assignee: OSRAM GmbH
- Current Assignee Address: DE Munich
- Agency: Viering Jentschura & Partner mbB
- Priority: DE102015201300 20150126
- Main IPC: F21V13/04
- IPC: F21V13/04 ; F21V5/04 ; F21V7/08 ; F21V11/10 ; G02B19/00 ; F21V7/00 ; F21V7/04 ; F21W131/406 ; F21Y101/00 ; F21Y115/10

Abstract:
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.
Public/Granted literature
- US20160215959A1 LIGHTING DEVICE HAVING LIGHT SOURCE AND REFLECTOR HAVING ELLIPSOIDAL REFLECTION SURFACE Public/Granted day:2016-07-28
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