Lighting apparatus

Details Lighting apparatus Lighting apparatus

1989-05-26

1990-10-23

Lazarus, Ira S.

Illumination

Plural light sources

With modifier

362346, 362240, 362298, 350619, F21V 700

Patent

active

049658760

ABSTRACT:
A lighting apparatus is provided having a plurality N of light sources arranged annularly around the optical axis of a reflector. The efficiency of such an apparatus and its service life are improved by providing a central mirrored column which is symmetrically disposed with respect to the light sources. The column has C.sub.N or D.sub.N symmetry and reflects light emitted by the light sources away from the light sources themselves, thereby reducing the amount of light reflected back at the light sources and reducing their thermal load. The column has peaks that extend into the notional annulus on which the light sources are arranged to shield adjacent light sources from each other.

REFERENCES:
patent: 3264467 (1966-08-01), Mann et al.
patent: 3686940 (1972-08-01), Kockott
patent: 4651257 (1987-03-01), Gehly
patent: 4816694 (1989-03-01), Kuppenheimer, Jr.

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