Backlighting device

Details Backlighting device Backlighting device

1995-04-04

1997-04-08

Lazarus, Ira S.

Illumination

Revolving

362297, 362346, 362347, 362 26, 362300, F21V 709

Patent

active

056180950

ABSTRACT:
At least part of a reflector surface covering a rod-shaped light source is a continuous body having such a shape that in a plane perpendicular to the central axis of the rod-shaped light source, a ray emitted from a light emitting point on the surface of the rod-shaped light source in the tangential direction going away from a light conducting plate is reflected back to the vicinity of the light emitting point. According to another aspect, at least part of a reflector surface covering a rod-shaped light source located between the rod-shaped light source and the light conducting plate is part of a parabola whose focus is substantially located on the side face of the light conducting plate in a plane perpendicular to the central axis of the rod-shaped light source.

REFERENCES:
patent: 4230095 (1980-10-01), Winston
patent: 4517631 (1985-05-01), Mullins
patent: 4947305 (1990-08-01), Gunter, Jr.
patent: 5055978 (1991-10-01), Bogoff
patent: 5262928 (1993-11-01), Kashima et al.
patent: 5394317 (1995-02-01), Grenga et al.
Bassett et al, "The Collection of Diffuse Light Onto an Extended Absorber", Optical and Quantum Electronics, 10 (1978) 61-82.

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