Illumination device

Details Illumination device Illumination device

1991-07-30

1992-04-14

Husar, Stephen F.

Illumination

Modifier mountable on light source envelope

With additional modifier

362224, 362260, 362307, 362355, F21M 314

Patent

active

051053454

ABSTRACT:
An illumination device comprising a reflecting plate, a single or a plural number of linear light source(s) arranged over said reflecting plate and a diffusing plate arranged over said light source(s), a light quantity adjusting means being arranged on the surface of the linear light source on between said light source(s) and said diffusing plate, and said illumination device being so adapted as to uniformalize luminance distribution on the diffusing plate by selecting shape and size of light-transmitting portions of the light quantity adjusting means.

REFERENCES:
patent: 3351409 (1967-11-01), McGuire
patent: 4391847 (1983-07-01), Brown
patent: 4418378 (1983-11-01), Johnson
patent: 4443834 (1984-04-01), Schafer et al.
patent: 5038259 (1991-08-01), Katoh et al.

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