Underwater illumination device

Details Underwater illumination device Underwater illumination device

1977-01-21

1979-01-16

Duggan, Donovan F.

Illumination

Photographic lighting

Including specific light modifier

362223, 362297, 362307, G03B 1502, H05B 3302, F21V 709

Patent

active

041352289

ABSTRACT:
An underwater illumination device comprises a base with a plug for a power source. A lamp on the base is enveloped by a tubular, transparent sleeve, with a cap at its outer end. A flux control reflector within the sleeve has a base and side plates, each provided with fluted surfaces serving to concentrate the light flux from the bulb and to direct the flux such that it flows to the outer edges of the beam to thereby more evenly illuminate an underwater object.

REFERENCES:
patent: 1357034 (1920-10-01), D'Humy
patent: 2253443 (1941-08-01), Muller
patent: 2542311 (1951-02-01), Carlson
patent: 3508040 (1970-04-01), Bertrams
patent: 3758770 (1973-09-01), Morasz
patent: 4021660 (1977-05-01), Szpur

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