Low-profile and homogeneous-beam lighting apparatus

Details Low-profile and homogeneous-beam lighting apparatus Low-profile and homogeneous-beam lighting apparatus

1995-03-23

1997-03-18

Lazarus, Ira S.

Illumination

Light source and modifier

Including reflector

362220, 362223, 362301, 362346, 362427, F21V 712

Patent

active

056116179

ABSTRACT:
A lighting apparatus comprises a light source (12) and light reflecting surfaces from the source to the surrounding environment. One light reflecting surface (10) distributes light at least partly over a second light reflecting surface (11). The first surface (10) reflects the light rays striking thereon substantially towards regions of the second surface (11) receiving the rays directly from the source with an angle of incidence not greater than 20.degree., preferentially not greater than 12.degree. and most preferentially of 10.degree.. Advantageously, the second surface (11) is of generally semicircular plan with a substantially diametrical edge and exhibits a radial cavity (29) in the form of a triangular pyramid the base of which is directed towards the light source.

REFERENCES:
patent: 4349866 (1982-09-01), Molnar
patent: 4517631 (1985-05-01), Mullins
patent: 4616296 (1986-10-01), Westgaard et al.
patent: 4799136 (1989-01-01), Molnar
patent: 4891739 (1990-01-01), Yasuda
patent: 5115384 (1992-05-01), Loth et al.

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