Illumination – Plural light sources – Source and modifier mounted for relative movement
Patent
1979-05-18
1981-02-17
Griffin, Donald A.
Illumination
Plural light sources
Source and modifier mounted for relative movement
362231, 362250, F21V 1902, F21V 2114
Patent
active
042518563
ABSTRACT:
A plurality of open-ended tubular members are movably mounted on a tripod-type base. Each member has a lens mounted to the front end thereof. A plurality of control rods, each independently supporting a different one of a plurality of colored or clear light sources, are located behind the lens. To permit variations in the projected image, each of the rods is individually movably mounted on a disc which is, itself, adjustably positionable within the member. The color coded rear ends of the rods and the disc position adjuster are externally accessible to permit manual positioning thereof. A flasher circuit is provided for intermittently energizing the light sources. A dimmer may also be provided to control the frequency of the light source energizations. Lights of a non-blinking variety can also be used to create stationary light patterns.
REFERENCES:
patent: 1780969 (1930-11-01), Brunner
patent: 2072697 (1937-03-01), Woodward
patent: 2134551 (1938-10-01), Enfield
patent: 2173162 (1939-09-01), Gilluly
patent: 2295863 (1942-09-01), Paradis
patent: 3241419 (1966-03-01), Gracy
patent: 3789211 (1974-01-01), Kramer
patent: 3949350 (1976-04-01), Smith
patent: 4025777 (1975-01-01), Hayakawa
Griffin Donald A.
Tarcza Thomas H.
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