Luminous diffuser with differentiated light emitting parts...

Details Luminous diffuser with differentiated light emitting parts... Luminous diffuser with differentiated light emitting parts...

2007-01-23

2007-01-23

Alavi, Ali (Department: 2875)

Illumination

Light modifier

Translucent or opaque

C250S505100

Reexamination Certificate

active

10518804

ABSTRACT:
This invention concerns a light diffuser for lighting equipments which is made up of a front plate (14) with holes or openings (16) distributed uniformly over all its surface, and an internal sheet (15) associated with the internal surface of the front plate and having holes of a different diameter (17, 17′, 17″) along different parts of its length and each positioned in line with an opening in the front plate. The front plate and the internal sheet may be two associated bodies or form a single integrated body.

REFERENCES:
patent: 3869615 (1975-03-01), Hoover et al.
patent: 4460832 (1984-07-01), Bigham
patent: 4465540 (1984-08-01), Albert
patent: 4651012 (1987-03-01), Clark et al.
patent: 4665036 (1987-05-01), Dedden et al.
patent: 5954423 (1999-09-01), Logan et al.
patent: 43 11 013 (1993-10-01), None
patent: 505250 (1939-05-01), None

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