Light fixture with elliptical reflector and mechanical shutter d

Details Light fixture with elliptical reflector and mechanical shutter d Light fixture with elliptical reflector and mechanical shutter d

1997-08-04

1999-05-18

Quach, Y My

Illumination

Light modifier

Adjustable or positionable

362268, 362281, 362289, F21V7/00

Patent

active

059044179

ABSTRACT:
A lighting apparatus includes a discharge arc lamp illumination source, an elliptical reflector completely surrounding the illumination source for collecting and projecting light from the illumination source, a shutter for dimming the amount of light generated by the illumination source and emanating from the lighting apparatus. The shutter is mechanically operable to defined an optical passageway therethrough of variable cross sectional area. The shutter includes a plurality of shutter blades mounted in a movable relationship relative to each other in response to user input. The shutter blades is movable to define the optical passageway of variable cross sectional area to dim the amount of light from the illumination source passing therethrough over the range of from about 0 to 100%.

REFERENCES:
patent: 3851165 (1974-11-01), Beck et al.
patent: 4462067 (1984-07-01), Altman
patent: 4519020 (1985-05-01), Little
patent: 4811182 (1989-03-01), Solomon
patent: 5590954 (1997-01-01), Hanson et al.
The Strand Catalog, ISSN 0969-2827.
Desisti Catalog.

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