发明申请
- 专利标题: LIGHT EMITTING DEVICE
- 专利标题(中): 发光装置
-
申请号: US13125979申请日: 2009-10-26
-
公开(公告)号: US20110194306A1公开(公告)日: 2011-08-11
- 发明人: Marcellinus P. C. M. Krijn , Gabriel-Eugen Onac
- 申请人: Marcellinus P. C. M. Krijn , Gabriel-Eugen Onac
- 申请人地址: NL EINDHOVEN
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址: NL EINDHOVEN
- 优先权: EP08168388.0 20081105
- 国际申请: PCT/IB09/54720 WO 20091026
- 主分类号: F21V7/22
- IPC分类号: F21V7/22
摘要:
The invention relates to a light-emitting device (1) comprising: a light source (2) for emitting light of a first wavelength range; a light guide (3) having a light receiving surface (4) for receiving at least part of said light emitted by the light source (2), a front surface (31) and a rear surface (32), for guiding light of said first wavelength range by total internal reflection at said front surface and said rear surface; a plurality of outcoupling elements (5) for outcoupling light from the light guide such that at least part of the light that is outcoupled by the outcoupling elements exits the light guide through said rear surface; a reflective member (6) arranged in rear of said light guide to reflect light that is outcoupled from the light guide; and a wavelength converting member (8) comprising a wavelength converting material arranged outside the light guide to convert light of said first wavelength range to light of a second wavelength range. Advantageously, in the light-emitting device according to the invention, the color, color temperature and/or color rendering index may be tuned by modifying the wavelength converting member. As a result, white light which is perceived as warm may be obtained.
信息查询