Surface light source device

Details Surface light source device Surface light source device

1995-06-07

1998-02-17

Cariaso, Alan

Illumination

Revolving

362 26, 362327, 362330, 362339, 385901, F21V 800

Patent

active

057184976

ABSTRACT:
A surface light source device which comprises a light-conducting member consisting of a sheet of transparent material, a linear light source disposed adjacent to an edge surface of the light-conducting member, a diffusion plate disposed on a front surface of the light-conducting member and a reflective plate disposed on a rear side of the light-conducting member. The rear surface of the light-conducting member has depressions or projections. These depressions or projections have rough surfaces. By selecting the shape of the depressions or projections, and controlling the roughness of the rough surfaces, an enhanced uniform brightness distribution is provided.

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patent: 5070431 (1991-12-01), Kitazawa et al.
patent: 5227773 (1993-07-01), Wu et al.

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