Illumination – Light modifier – Reflector
Patent
1997-09-08
1999-10-26
Spyrou, Cassandra
Illumination
Light modifier
Reflector
362298, 362347, 359853, 359867, 359868, F21V 700, G02B 510
Patent
active
059715715
ABSTRACT:
A concave light reflecting device for providing substantially uniform illumination across a plane comprising a parabolic reflecting surface, an involute reflecting surface, and a segmented reflecting surface. The parabolic reflecting surface having a first end and a second end, wherein the parabolic radius of the first end is less than the parabolic radius of the second end. The involute reflecting surface having a first end, a second end, and a focal point within the concave portion of the device. Wherein, the distance from the focal point to the involute reflecting surface increases from the first end to the second end. The second end of the involute reflecting surface transitions to the first end of the parabolic reflecting surface, and the first end of the involute reflecting surface is connected to the segmented reflecting surface. The segmented reflecting surface extends outward from the focal point of the involute reflecting surface for decreasing glare from the device.
REFERENCES:
patent: 3251984 (1966-05-01), Colterjohn
patent: 3679893 (1972-07-01), Shemitz et al.
patent: 3983039 (1976-09-01), Eastland
patent: 4006355 (1977-02-01), Shemitz et al.
patent: 4027151 (1977-05-01), Barthel
patent: 4041306 (1977-08-01), Compton et al.
patent: 4078169 (1978-03-01), Armstrong
patent: 4173034 (1979-10-01), Shemitz
patent: 4218727 (1980-08-01), Shemitz et al.
patent: 4229779 (1980-10-01), Bilson et al.
patent: 4242725 (1980-12-01), Douma et al.
patent: 4298916 (1981-11-01), Shemitz
patent: 4308573 (1981-12-01), McNamara, Jr.
patent: 4351475 (1982-09-01), Hudson
patent: 4379322 (1983-04-01), Kelly
patent: 4504894 (1985-03-01), Reibling
patent: 4947292 (1990-08-01), Vlah
patent: 5032958 (1991-07-01), Harwood
patent: 5075827 (1991-12-01), Smith
patent: 5278737 (1994-01-01), Luce et al.
patent: 5530628 (1996-06-01), Ngai
Spyrou Cassandra
Winona Lighting Studio, Inc.
Winstedt Jennifer
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