Light regulator and surface light source device

Details Light regulator and surface light source device Light regulator and surface light source device

1997-03-31

2000-08-15

Bovernick, Rodney

Optical waveguides

Optical imaging tunnel

349 62, 362 31, F21V 800

Patent

active

061048542

ABSTRACT:
A light regulator and a surface light source device employing the light regulator. For liquid-crystal display applications, the surface light source device can effectively prevent degradation in the quality of the emitted light and can reliably provide the required directivity correction. The light regulator is formed by laminatedly arranging a light scattering surface between first and second sheet-like members. The two sheet-like members mutually differ in shape, material and refractive index. Scattering means arranged between the first and second sheet-like members prevents Newton's rings due to spaces between the two sheet-like members from occurring. A light diffusion sheet may be disposed between the first and second sheet-like members.

REFERENCES:
patent: 5381309 (1995-01-01), Borchardt
patent: 5408388 (1998-10-01), Kobayashi et al.
patent: 5587816 (1996-12-01), Gunjima et al.
patent: 5816677 (1998-10-01), Kurematsu et al.
patent: 5833344 (1998-11-01), Arai et al.
patent: 5944405 (1999-08-01), Takeuchi et al.

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