Illumination – Light source and modifier – Ionized gas or vapor light source
Patent
1981-03-04
1983-08-09
Nelson, Peter A.
Illumination
Light source and modifier
Ionized gas or vapor light source
362145, 362372, 362220, 362374, 362270, 362285, 362310, 362338, 362368, F21S 110, F21S 310
Patent
active
043982395
ABSTRACT:
A luminaire particularly suited for outdoor applications (e.g., for illuminating roadways and alleyways) and including a two-part housing wherein one of the parts (the base) is metallic and the other (refracting portion) is of lightweight (plastic) material and includes both an opaque chamber for housing the luminaire's lightweight rectangular aluminum reflector and a refracting, multiplanar prismatic lens. The reflector is slidably positioned in the chamber portion and thus readily removable when both parts of the housing are separated. The luminaire is capable of providing a predetermined scheme of light distributions (including IES types II, III, and IV) on the ground therebelow when oriented in either a horizontal or vertical position.
REFERENCES:
patent: 3283140 (1966-11-01), Rex
patent: 3350556 (1967-10-01), Franck et al.
patent: 3377477 (1968-04-01), Odle
patent: 3561682 (1971-02-01), Rex
patent: 3590238 (1971-06-01), Arens
patent: 3836767 (1974-09-01), Lasker
patent: 3858042 (1974-12-01), Peterson
patent: 4300187 (1981-11-01), Fletcher
patent: 4337507 (1982-06-01), Lasker
de Vos Hendrik A. J.
Sitzema, Jr. Ronald L.
Fraley Lawrence R.
GTE Products Corporation
Nelson Peter A.
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