Compact illumination system and display device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 4, 2005
Grant Date -
Jan 13, 2005
app pub date -
Jun 3, 2002
filing date -
Jun 1, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A compact backlighting system for illuminating a display device (12) comprises a light-emitting panel (1) having a front wall (2), an opposing rear wall (3) and edge areas (4). At least one of the edge areas (4) is capable of transmitting light. The backlighting system includes a light source (6) comprising at least one LED, and a light-mixing panel 5 for mixing the light originating from the light source (6). Light originating from the light source (6) is coupled into the light-mixing panel (5) via a light input surface (7), which light is mixed in the light-mixing panel (5) and coupled out via a light output surface (8). The light-mixing panel (5) and the light-emitting panel (1) are arranged so as to extend substantially parallel to each other. Between the light-mixing panel 5 and the light-emitting panel 1, the backlighting system comprises a light transport chamber (9) for transporting the light from the light-mixing panel (5) to the light-emitting panel (1). Preferably, the light transport chamber (9) has elliptical, reflective inner wall (10).
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