Marker lamp with halo effect

Details Marker lamp with halo effect Marker lamp with halo effect

1989-06-10

1990-05-29

Lazarus, Ira S.

Illumination

Plural light sources

With modifier

362245, 362329, 362339, 362806, 26417716, F21V 500

Patent

active

049300555

ABSTRACT:
A marker lamp having a transparent cylindrical tube in which are mounted a plurality of incandescent filament-type bulbs spaced along the longitudinal axis of the tube. Either the outer or inner surface of the tube has straight striations or grooves extending longitudinally of the tube. When the bulbs are illuminated, there is formed in the tube a light halo centered on each bulb and lying in a plane perpendicular to the longitudinal axis of the tube.

REFERENCES:
patent: 1149208 (1915-08-01), Mygatt
patent: 1457980 (1923-05-01), McMasters
patent: 2196214 (1940-04-01), Kantack
patent: 2764670 (1956-09-01), Van Dusen, Jr.
patent: 3777138 (1973-12-01), Metzler
patent: 4285032 (1981-08-01), Honda et al.
patent: 4345363 (1982-08-01), Leuchs et al.
patent: 4536362 (1985-08-01), Donaldson
patent: 4781880 (1988-11-01), Robbins

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