Luminaire

Details Luminaire Luminaire

1978-02-21

1980-01-29

Birmiel, Howard A.

Illumination

Light source and modifier

Ionized gas or vapor light source

362300, 362303, 362307, 362311, 362327, 362364, 362404, 362408, F21S 302, F21V 302

Patent

active

041864336

ABSTRACT:
Indoor lighting fixture providing semi-indirect symmetrical light distribution. The fixture, which is adapted to be positioned adjacent the ceiling of the room comprises a high intensity gaseous discharge lamp mounted at its base on the ceiling and extending downwardly into a box-shaped reflector open at its top with reflective sides and a diffuser panel at its bottom. Positioned in the reflector and surrounding the lower portion of the lamp is a dish-shaped semi-transparent reflector which reflects a portion of the incident light toward the ceiling and transmits a portion of the light to the area below the fixture. The arrangement is such that direct and indirect light is distributed by the fixture while shielding the light source from direct view of the room occupants to avoid glare.

REFERENCES:
patent: 1302492 (1919-05-01), Arenberg
patent: 1304363 (1919-05-01), Peckham
patent: 1305234 (1919-05-01), Pierce
patent: 1357568 (1920-11-01), Jones
patent: 1361587 (1920-12-01), Jones
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patent: 1612300 (1926-12-01), Manookin
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patent: 1876667 (1932-09-01), Gunnison
patent: 2022264 (1935-11-01), Wiedenhaeft
patent: 2303747 (1942-12-01), Kuhl
patent: 2675466 (1954-04-01), Baker
patent: 2922030 (1960-01-01), Bobrick
patent: 3370165 (1968-02-01), Chan
patent: 3950638 (1976-04-01), Kent et al.

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