Compact fluorescent lighting unit with adjustable beam spread

Details Compact fluorescent lighting unit with adjustable beam spread Compact fluorescent lighting unit with adjustable beam spread

2005-09-20

2005-09-20

O'Shea, Sandra (Department: 2875)

Illumination

Plural light sources

Remote adjustment or positioning means

C362S220000, C362S225000, C362S259000, C362S270000, C362S285000, C362S346000, C362S429000, C362S371000, C362S428000

Reexamination Certificate

active

06945671

ABSTRACT:
A compact portable fluorescent lighting unit provides concentrated even coverage illumination for many visual arts, theater, studio or location applications. Beam width is conveniently user-adjustable without tools, typically in three steps: 60, 70 and 90 degrees. A pair of identical lighting cells are stacked one above the other; each cell can utilize any one of a variety of fluorescent lamps providing powerful illumination. Each cell has an efficient reflector and provision for beam width selection by varying the spacing of the lamp from the rear of the reflector via easily adjustable socket/lamp support brackets. A welded aluminum mounting yoke, with arms swivel-attached to opposite ends of the housing, can be set to any desired orientation for beam-aiming and locked in place to the housing by a user knob. The yoke can be affixed directly to building structure or mounted via a pipe or stand adaptor, optionally swivelled to provide a second beam-aiming axis.

REFERENCES:
patent: 3118619 (1964-01-01), Harling
patent: 3749907 (1973-07-01), Allmand
patent: 4811177 (1989-03-01), Lauckhardt et al.
patent: 3437192 (1986-04-01), None

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