Surface illuminating apparatus

Details Surface illuminating apparatus Surface illuminating apparatus

1993-10-01

1994-12-27

Lazarus, Ira S.

Illumination

Revolving

362339, F21V 800, F21V 502

Patent

active

053770846

ABSTRACT:
A surface illuminating apparatus, which is provided with a transparent light guide plate 2, a reflecting plate 4 layered onto the rear surface of the light guide plate 2, and a light diffusion plate 6 layered onto the outer surface of plate 2. The light guide plate 2 and the reflecting plate 4 have an irregularly reflecting plate 3 therebetween. Light sources 8 are disposed at both lateral ends of the light guide plate 2, and formed on the outer surface of plate 2 is a light diffusion plate 6 having a plurality of spotted projections 7 regularly disposed and having a light condensing and diffusing function.

REFERENCES:
patent: 3991526 (1976-11-01), Frank et al.
patent: 4043636 (1977-08-01), Eberhardt et al.
patent: 4310219 (1982-01-01), Jaccard
patent: 4791540 (1988-12-01), Dreyer, Jr. et al.
patent: 4924356 (1990-05-01), French et al.
patent: 5022728 (1991-06-01), Fandrich
patent: 5093765 (1992-03-01), Kashima et al.
patent: 5130898 (1992-07-01), Akahane

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