Illumination – Elongated source light unit or support – With or including transparent or translucent member
Patent
1986-03-17
1987-04-21
Feinberg, Craig R.
Illumination
Elongated source light unit or support
With or including transparent or translucent member
362309, 362337, F21S 300
Patent
active
046601317
ABSTRACT:
A method for indirectly illuminating an interior space is disclosed wherein a laterally extended overhead distribution of light is produced from a source of indirect lighting, such as a fluorescent indirect luminaire, by directing a portion of the source light upward to produce a luminance pattern on the ceiling surface directly overhead and then refracting substantially all of another portion of the source light laterally of the indirect luminaire so as to spread the refracted portion away from the directly overhead luminance pattern. Illustrated is a luminaire having trough-shaped lensed for achieving the method of the invention wherein the lateral portions of the lens act to refract the light laterally as above described, and the top lens portion is formed to diverge the light incidence thereon directly overhead in a substantially uniform luminance pattern which is extended by the light refracted through the lateral lens portions.
REFERENCES:
patent: 3398273 (1968-08-01), Rex et al.
patent: 4065667 (1977-12-01), Ruud et al.
patent: 4390930 (1983-06-01), Herst et al.
Peerless Electric Company, Photometric and Technical Information, Longlites by Peerless, 1977, pp. 82-95.
Electro-Systems, Inc., Power-Lume 800/1500, 1965, p. 5.
Holophane Company, Inc., Outdoor Substation Unit with Lens Top, D4252, 1966.
Herst Douglas J.
Ngai Peter Y. Y.
Beeson Donald L.
Feinberg Craig R.
Okonsky David A.
Peerless Lighting Corporation
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