Surface illuminating apparatus

Details Surface illuminating apparatus Surface illuminating apparatus

1988-10-19

1989-08-22

Lazarus, Ira S.

Illumination

Revolving

362327, 362331, 362812, 362311, 40546, F21V 704

Patent

active

048601713

ABSTRACT:
A surface illuminating apparatus in which a plurality of transparent plates of different spot patterns formed of a large number of fine spots painted or printed at one side are layered in the relation that spotted surfaces having the painted or printed spots are not opposite to each other, thereby forming a surface illuminating body, a reflecting plate is brought into close contact with the spotted surface of the rearmost transparent plate, in turn, the rear surface of the body, a light diffusion plate in close contact with a non-spotted surface of the foremost transparent plate, in turn, the surface of the body, and light sources for irradiating light on the body are disposed at both lateral end sides of the body.

REFERENCES:
patent: 2347665 (1944-05-01), Christensen et al.
patent: 2646637 (1953-07-01), Nierenberg et al.
patent: 3242328 (1966-03-01), Kapany et al.
patent: 4642736 (1987-02-01), Masuzawa et al.

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