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Illumination system, luminaire and backlighting unit

A lighting system and illuminator technology, which is applied in the field of lighting systems, can solve problems such as poor uniformity of light exit windows, and achieve the effect of uniform brightness distribution

Active Publication Date: 2010-03-24
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of this known lighting system is that the uniformity over the light exit window is relatively poor

Method used

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  • Illumination system, luminaire and backlighting unit
  • Illumination system, luminaire and backlighting unit
  • Illumination system, luminaire and backlighting unit

Examples

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Embodiment Construction

[0037] Figure 1A , Figure 1B and Figure 1C A cross-sectional view of a lighting system 2, 4, 5 according to the invention is shown. The lighting system 2 , 4 , 5 according to the invention comprises a light exit window 30 for emitting light from the lighting system 2 , 4 , 5 and a diffuse reflective screen 40 , 42 , 43 arranged opposite the light exit window 30 . The lighting system 2 , 4 , 5 also comprises a light source 20 arranged for indirectly illuminating the light exit window 30 via a diffuse reflective screen 40 , 42 , 43 . The light source 20 is disposed near the edge of the light exit window 30 and on an imaginary plane 22 disposed substantially parallel to the light exit window 30 . Light emitted from light source 20 includes an angular distribution 24 about a center vector 26 . Center vector 26 faces away from light exit window 30 , is substantially parallel to a normal axis (not shown) of imaginary plane 22 or is inclined away from light exit window 30 relat...

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Abstract

The invention relates to an illumination system (2), aluminaire (2), a backlighting system and a display device. The illumination system according to the invention comprises a light exit window (30) for emitting light from the illumination system, and a diffuse reflecting screen (40) arranged opposite the light exit window. The illumination systemfurther comprises a light source (20) which is arranged for indirect illumination of the light exit window via the diffuse reflecting screen. The light source is arranged near an edge ofthe light exit window on an imaginary plane (22) arranged substantially parallel to the light exit window and emits light away from the light exit window. The illumination system further comprises an edge wall (62) comprising a specular reflecting mirror (60) being concavelyshaped for reflecting at least part of the light emitted by the light source towards the diffuse reflecting screen. The effect of the illumination system according to the invention is that the use ofthe specular reflecting mirror enables a controlled reflection of the part of the light emitted by the light source towards the diffuse reflecting screen.

Description

technical field [0001] The invention relates to a lighting system having a light exit window for emitting light from the lighting system. [0002] The invention also relates to a backlight system comprising the lighting system according to the invention, a luminaire comprising the lighting system according to the invention and a display device comprising the backlight system according to the invention. Background technique [0003] Such lighting systems are known per se. They are used in particular as luminaires for general lighting purposes, for example as luminaires for office lighting or for shop lighting, such as window lighting or (transparent or translucent) lighting on which objects such as jewelry are displayed Illumination of glass panels or (transparent) glass panels or (transparent) synthetic resins. An alternative application is the use of such a lighting system for lighting advertising boards, notice boards as display devices. [0004] These known lighting sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357F21S10/02F21V9/10F21V9/40
CPCG02F1/133606G02F1/133617F21V11/02G02F1/13336F21V7/0008G02F1/133615F21Y2101/02G02F1/133621F21V13/10F21Y2103/003G02F2001/133507F21V7/0025F21Y2103/022F21Y2103/10F21Y2115/10F21Y2103/33F21Y2113/13F21V9/30F21V13/08G02F1/133507
Inventor E·布尼坎普
Owner SIGNIFY HLDG BV
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