Compact illumination system and display device

Details Compact illumination system and display device Compact illumination system and display device

2005-10-04

2005-10-04

Tso, Laura K. (Department: 2875)

Illumination

Revolving

C362S555000

Reexamination Certificate

active

06951401

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 panel5for 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 panel5and the light-emitting panel1, 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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patent: 6796700 (2004-09-01), Kraft

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