Lamp for producing a daylight spectrum

Details Lamp for producing a daylight spectrum Lamp for producing a daylight spectrum

1994-03-22

1995-05-23

O'Shea, Sandra L.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313487, 356230, 362 2, 362293, H01J 516

Patent

active

054184193

ABSTRACT:
A lamp for producing a spectral distribution which is substantially identical to daylight color temperature. The lamp contains a filament which, when excited by electrical energy, emits radiant energy at least within the visible spectrum with wavelengths from about 400 to about 700 nanometers, a reflector body with a surface to intercept and reflect the visible spectrum radiant energy which is positioned within the reflector so that at least 50 percent of the visible spectrum radiant energy is directed towards the reflector surface, and a coating on the surface of the reflector body from which the reflected radiance of each wavelength of visible spectrum radiant energy directed towards the reflector surface when combined with the visible spectrum radiant energy not directed towards the reflector surface produces a total light output in substantial accordance with a specified formula.

REFERENCES:
patent: 3757103 (1973-09-01), Walter
patent: 3875453 (1975-04-01), Thornton, Jr.
patent: 4346324 (1982-08-01), Yoldas
patent: 4458176 (1984-07-01), Chenot et al.
patent: 4608512 (1986-08-01), Rakitsch
patent: 4870318 (1989-09-01), Csanyi et al.
patent: 5060118 (1991-10-01), Penrod et al.
patent: 5177396 (1993-01-01), Gielen et al.
patent: 5272409 (1993-12-01), Van Dulmen et al.

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