Hybrid lightguide backlight
First Claim
Patent Images
1. A backlighting system, comprising:
- a solid lightguide having an interior;
at least one first light source optically connected to a first edge of the solid lightguide for supplying light into the interior thereof,a reflective cavity having an interior and comprising a first reflector and a second semi-transparent reflector disposed between the lightguide and the first reflector, the first reflector and the second semi-transparent reflector defining the interior of the reflective cavity; and
at least one second light source optically connected to a first edge of the reflective cavity for supplying light into the interior thereof.
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Abstract
Backlighting systems are disclosed, which include a lightguide with at least one light source optically connected to an edge of the lightguide for supplying light into its interior and a reflective cavity with at least one light source optically connected to the reflective cavity for supplying light into its interior. The reflective cavity may include a first reflector and a second reflector and at least one source may be disposed at an edge of the reflective cavity. Alternatively, the reflective cavity may include a back reflector portion and light sources may be disposed at the back reflector portion.
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Citations
23 Claims
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1. A backlighting system, comprising:
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a solid lightguide having an interior; at least one first light source optically connected to a first edge of the solid lightguide for supplying light into the interior thereof, a reflective cavity having an interior and comprising a first reflector and a second semi-transparent reflector disposed between the lightguide and the first reflector, the first reflector and the second semi-transparent reflector defining the interior of the reflective cavity; and at least one second light source optically connected to a first edge of the reflective cavity for supplying light into the interior thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification