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.
Claims9
A luminaire (1) comprising:
- a reflector body (9) having a reflective part (2) provided with a coating (5), the coating (5) comprising at least a first and a second interference layer (12a-d), the layers (12a-d) being mutually different, the coating further 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;
- contact means (6) for electrically connecting a light source,
- characterized in that the coating (5) comprises at least a first and a second light reflective particle group, the first interference layer (12a-d) being provided on the particles (10a-d) of the first particle group and the second interference layer (12a-d) being provided on the particles (10a-d) of the second particle group, the particles of the first particle group being of a material selected from one of said sets and the first interference-layer being of a material selected from a remaining set of said sets, the particles of the second particle group being of a material selected from one of said sets and the second interference layer being of a material selected from a remaining set of said sets,
- 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.
A luminaire (1) according to any one of the preceding claims characterized in that in the coating (5) the particles (10a-d) of said particle groups are mixed.
A luminaire (1) according to any one of the preceding claims characterized in that the particles (10a-d) have a particle size of at least 5 μm.
A luminaire (1) according to any one of the preceding claims characterized in that the luminaire is a backlighting system.
Dependencies are inferred from the claim text.