Luminaire
AssigneeKoninklijke Philips Electronics N.V.
InventorsVolker Dirk Hildenbrand, Claudia Mutter, Wanda Susanne Kruijt
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Abstract
The invention relates to a luminaire (1) comprising a reflector body (9) having a reflecting part (2) provided with a light reflective coating (5), and comprising contact means (6) for electrically connecting a light source. The coating (5) comprises at least two, light reflective particle groups, the groups exhibiting a mutually different color because of an interference layer (12a-d) provided on the particles (10a-d) which is different for the respective groups. A white color impression of the coating (5) is obtainable when the groups are jointly used in relative proportions in the coating (5). The coating (5) does not suffer from intrinsic absorption, or from color shift.
Claims13
A luminaire (1) comprising:
- a reflector body (9) having a reflective part (2) provided with a coating (5), the coating (5) comprising at least one material selected from a set consisting of materials with a high-index of refraction and at least one further material selected from a further set consisting of materials with a low-index of refraction;
- and
- contact means (6) for electrically connecting a light source, arranged such that light from the source will impinge on said coating,
- characterized in that the coating (5) comprises at least a first group of light reflective particles of a first color and a second group of light reflective particles of a second color different from said first color,
- the particles of the first particle group each comprising a core material selected from one of said sets, and being provided with a respective first interference layer of a material selected from the other of said sets, the particles of the second particle group each comprising a core material selected from a first of said sets and being provided with a respective second interference layer of a material selected from the second of said sets,
- the respective second interference layers being different from the respective first interference layers, and
- relative quantities of each respective light reflective particle group being chosen such, that when their reflections are blended, there is produced white light of predetermined CIE coordinates.
Dependencies are inferred from the claim text.