Invention Grant
- Patent Title: Optical projection apparatus
- Patent Title (中): 光投影装置
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Application No.: US13378308Application Date: 2010-06-15
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Publication No.: US08684540B2Publication Date: 2014-04-01
- Inventor: Stefan Grötsch , Simon Kocur , Matthias Sabathil
- Applicant: Stefan Grötsch , Simon Kocur , Matthias Sabathil
- Applicant Address: DE Regensburg
- Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee Address: DE Regensburg
- Agency: Slater & Matsil, L.L.P.
- Priority: DE102009030549 20090625
- International Application: PCT/EP2010/058393 WO 20100615
- International Announcement: WO2010/149539 WO 20101229
- Main IPC: G03B21/20
- IPC: G03B21/20 ; G03B21/26 ; F21V9/00 ; F21V9/16 ; F21V23/02

Abstract:
An optical projection apparatus includes a first light source, a second light source, and an imaging element, which is illuminated by the first light source and the second light source during operation. The light source includes a light-emitting diode chip that emits red light during operation. The second light source includes a first light-emitting diode chip, which emits green light during operation. A second light-emitting diode chip emits blue light during operation. The second light-emitting diode chip is arranged on the first light-emitting diode chip at a radiation exit surface of the first light-emitting diode chip. Electromagnetic radiation generated in the first light-emitting diode chip during operation passes through the second light-emitting diode chip.
Public/Granted literature
- US20120133908A1 Optical Projection Apparatus Public/Granted day:2012-05-31
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