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Luminaire

A technology of light source and electric lamp, applied in the field of light source, can solve problems such as low efficiency and inconvenience

Inactive Publication Date: 2009-07-01
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the known light source is also that, when provided with facets of curved cross-section, the light source generates the light beam in an inconvenient and inefficient manner

Method used

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  • Luminaire
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Examples

Experimental program
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Embodiment Construction

[0019] figure 1 A light source 1 is shown comprising an elongated reflector 5 extending along an axis 3, comprising a plurality of elongated facets 7, extending along another facet and the axis, each provided with a reflective surface 9, the cross-section of the facets With bend 11. Facets adjacent to each other are connected to each other by connecting surfaces 12 . The angle μ formed by the connecting surface close to the connecting mechanism and the plane T is larger than the angle μ′ formed by the connecting surface far away from the connecting mechanism and the plane T. The connection surface is positioned such that it does not substantially reflect light from the lamp during operation of the lamp. The light source also comprises an elongated concave axially extending secondary reflector 13 such that the reflective surface 9 of the facet 7 and the light emission window 15 of the secondary reflector 13 face each other, wherein the window lies in plane T. Between the ref...

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PUM

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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.

Description

technical field [0001] The invention relates to a light source, comprising: [0002] an elongated reflector extending along the axis, comprising a plurality of elongated facets extending along the axis and each having a reflective surface; [0003] An elongated and concave secondary reflector extending along an axis such that the reflective surface of the facet and the light emission window of the secondary reflector face each other, said window being located in plane T, the facet in a section perpendicular to said axis There is a bend; [0004] a connection mechanism, located between the reflector and the secondary reflector, capable of accommodating at least one electric lamp; [0005] The invention also relates to an assembly of an electric lamp and a light source. Background technique [0006] Such a light source is already known from US-1900551. This known light source is designed to be used as an indirect light source and can be used as general lighting. The cross...

Claims

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Application Information

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IPC IPC(8): F21V7/00F21V7/04
CPCF21V7/0008F21V7/04
Inventor P·A·J·霍坦
Owner KONINKLIJKE PHILIPS ELECTRONICS NV