Title:
照明装置
Document Type and Number:
Japanese Patent JP2006521000
Kind Code:
A
Abstract:
A luminaire for indirect lighting has a main reflector, a counter-reflector with a light emission window in a plane T. The counter-reflector and reflector are oppositely arranged. The main reflector has a reflecting surface built up from a plurality of facets n having a curvature in cross-section. The curvature of each respective facet n is such that light coming from a light emission window and hitting a given facet n is reflected through an angle of reflection Phin<=alphan-beta, in which, beta is a smallest angle of reflection with the plane T at which glare is just counteracted, and alphan is a greatest angle of reflection with the plane T at which reflected light just clears the counter-reflector.
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Inventors:
Horten Petrus AJ
Application Number:
JP2006506707A
Publication Date:
September 14, 2006
Filing Date:
March 15, 2004
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
F21V7/09; F21V7/00; F21V7/04; F21Y103/00
Domestic Patent References:
| JPH03173005A | 1991-07-26 | |||
| JPS5693205A | 1981-07-28 | |||
| JP2001332108A | 2001-11-30 | |||
| JPH0552123U | 1993-07-09 | |||
| JPS3730374Y1 | ||||
| JPH03173005A | 1991-07-26 | |||
| JPS5693205A | 1981-07-28 | |||
| JP2001332108A | 2001-11-30 | |||
| JPH0552123U | 1993-07-09 | |||
| JPS3730374Y1 |
Foreign References:
| US1900551A | 1933-03-07 | |||
| US1900551A | 1933-03-07 |
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Akihiko Miyazaki
Fueda Shusen