Reflector with negative focal length

Details Reflector with negative focal length Reflector with negative focal length

2007-05-15

2007-05-15

Luebke, Renee (Department: 2875)

Illumination

Light source and modifier

Including reflector

C362S297000, C362S305000, C362S346000, C362S347000

Reexamination Certificate

active

11088792

ABSTRACT:
A luminaire with reflector of negative focal length is disclosed, which comprises a light source and a luminaire screen having a reflector of negative focal length, a side screen and a plate; wherein the reflector of negative focal length is capable of reflecting the upward-incident rays emitted from the light source; and the side screen is capable of reflecting the sideward-incident rays emitted from the light source and the reflected rays of the reflector; and the plate being disposed at the lower portion of the luminaire screen beneath the light source has a plurality of micro-structures arranged thereon and is capable of accepting the rays of the downward incident area along with both the reflected rays of the reflector and the side screen so as to diffuse the same for discharging. By the luminaire screen of the invention, the rays emitting from the light source of the luminaire are reflected and directed to a preferred discharging area so as to enable the rays to be discharged out of the luminaire by large angles for reducing glare.

REFERENCES:
patent: 5207495 (1993-05-01), Ahlstone
patent: 5897196 (1999-04-01), Soskind et al.
patent: 6234645 (2001-05-01), Borner et al.
patent: 6540382 (2003-04-01), Simon
patent: 6698908 (2004-03-01), Sitzema et al.
patent: 2005/0129357 (2005-06-01), Yang et al.
patent: 2005/0168995 (2005-08-01), Kittelmann et al.

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