Incandescent illumination system

Details Incandescent illumination system Incandescent illumination system

1995-10-20

1999-09-28

Patel, Ashok

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313272, 313273, H01K 114, H01K 128

Patent

active

RE0363162

ABSTRACT:
An improved incandescent lamp is disclosed that is specially adapted for use in combination with a concave reflector in providing a high-intensity beam of light. The lamp includes a plurality of linear, helically-wound filaments arranged with their longitudinal axes parallel with each other and spaced substantially uniformly around the lamp's central longitudinal axis. Orienting such a lamp with its longitudinal axis aligned with the reflector's longitudinal axis, and with the filaments near the reflector's general focal point, ensures that a high proportion of the emitted light is collected by the reflector to project the high-intensity beam.

REFERENCES:
patent: 1237611 (1917-08-01), Brownlee
patent: 1313857 (1919-08-01), Dennington
patent: 1634528 (1927-07-01), Wood
patent: 1651431 (1927-12-01), Wood
patent: 1678092 (1928-07-01), Wood
patent: 1678093 (1928-07-01), Wood
patent: 1953456 (1934-04-01), Allen
patent: 1985915 (1935-01-01), Chelioti
patent: 2592102 (1952-04-01), Alexander
patent: 2605440 (1952-07-01), Gero
patent: 3364377 (1968-01-01), de Nygorden et al.
patent: 4918354 (1990-04-01), Johnson, Jr.

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