Lighting or indicating apparatus for a motor vehicle, having improved light diffusing means
First Claim
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1. Light emitting apparatus for a motor vehicle, comprising:
- a light source;
a diffusing means disposed in relation to the light source so as to receive light from the light source to diffuse said light, wherein said diffusing means comprise a plate translucent to said light, said plate comprising a mass of a transparent first material having a first refractive index; and
a plurality of inclusions embedded in said mass, each of said inclusions having a multi-layered structure, said multi-layered structure having a core and at least one successive layer, wherein said core and said at least one successive layer are constructed from different materials, at least one successive layer being constructed of said first material and said core being of a transparent second material having a second refractive index different from the first refractive index, wherein ratio x of said first refractive index and said second refractive index lies in the range of 0.93≦
×
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1 and 1<
×
≦
1.02, wherein said ratio is not 1.
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Abstract
Lighting apparatus for a motor vehicle, for illuminating or signalling purposes, comprises a light source cooperating with optical diffusing means. The diffusing means comprise a plate through which the light passes from the light source. The mass of this plate is made of a transparent first material having a first refractive index, and in which are embedded inclusions of a transparent second material having a different refractive index.
12 Citations
15 Claims
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1. Light emitting apparatus for a motor vehicle, comprising:
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a light source;
a diffusing means disposed in relation to the light source so as to receive light from the light source to diffuse said light, wherein said diffusing means comprise a plate translucent to said light, said plate comprising a mass of a transparent first material having a first refractive index; and
a plurality of inclusions embedded in said mass, each of said inclusions having a multi-layered structure, said multi-layered structure having a core and at least one successive layer, wherein said core and said at least one successive layer are constructed from different materials, at least one successive layer being constructed of said first material and said core being of a transparent second material having a second refractive index different from the first refractive index, wherein ratio x of said first refractive index and said second refractive index lies in the range of 0.93≦
×
<
1 and 1<
×
≦
1.02, wherein said ratio is not 1.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A light emitting apparatus for a motor vehicle, comprising:
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a light source;
a refraction means located in front of said light source so as to receive light from said light source and diffuse said light, said refraction means comprising a plate having a first side proximate to said light source and a second side, said plate being translucent to said light;
said first side having a plurality of toroidal elements thereon such that said light falls upon said toroidal elements; and
inclusions embedded in said plate, each of said inclusions having a multi-layered structure, said multi-layered structure comprising a core and at least one successive layer, wherein said core and said at least one successive layer are constructed from two different materials, wherein ratio x of refractive index of said two different materials lies in the range of 0.93≦
×
<
1 and 1<
×
≦
1.02 wherein said ratio is not 1.- View Dependent Claims (15)
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Specification