发明名称 |
ILLUMINATION SYSTEM, LUMINAIRE AND DISPLAY DEVICE |
摘要 |
The invention relates to an illumination system (4) comprising at least one light source (10) for emitting light of a predominant wavelength (W), and a light-transmitting panel (14) which comprises a light-emitting window (16), a rear wall (18) situated opposite said light-emitting window, and edge walls (20) extending between the light-emitting window and the rear wall. Light from the LED is coupled into the light-transmitting panel and is transported substantially via total internal reflection. The rear wall is provided with a two-dimensional array of recesses (22, 24). A sub-set of recesses (22) is distributed substantially regularly on the rear wall. Each recess (22A, 22B, 22C) from the sub-set (22) comprises scattering material (26). When light from the light-transmitting panel reaches the scattering material of the recess, part of the light (W') is coupled out of the light-transmitting panel via scattering. The regular distribution of the scattering material on the rear wall improves the uniformity of the light emitted via the light-emitting window. In an embodiment of the illumination system, the scattering material comprises a luminescent material (28), which absorbs light of the predominant wavelength (UV) and emits light of a further predominant wavelength (R, G, B). |
申请公布号 |
WO2008035256(A3) |
申请公布日期 |
2008.05.29 |
申请号 |
WO2007IB53699 |
申请日期 |
2007.09.13 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;IJZERMAN, WILLEM, L.;CORNELISSEN, HUGO, J. |
发明人 |
IJZERMAN, WILLEM, L.;CORNELISSEN, HUGO, J. |
分类号 |
G02B6/00 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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