Lighting and/or signalling device with optical guide for a motor vehicle
First Claim
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1. A device for a motor vehicle comprising:
- at least one light source in a motor vehicle signal light or headlight configured to emit a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising;
an output face for the light beam comprising flutes of uniform size and shape, anda reflection face, opposite to the output face, having a serrated profile forming a reflection face for the light beam;
wherein the reflection face comprises a series of prisms, each prism forming, with the following prism, a bottom angle, said at least one bottom angle of the reflection face being truncated, the size of the truncated area being variable from one angle to another.
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Abstract
The invention concerns a lighting and/or signalling device for a motor vehicle comprising at least one light source emitting a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising an output face for the light beam, and another reflection face, opposite to the output face, having a serrated profile forming a reflection face for the light beam, notably comprising a series of prisms, each prism forming, with the following prism (8), a bottom angle (D). At least one bottom angle of the reflection face is truncated, and/or in that the output face has a profile comprising flutes.
27 Citations
21 Claims
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1. A device for a motor vehicle comprising:
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at least one light source in a motor vehicle signal light or headlight configured to emit a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising; an output face for the light beam comprising flutes of uniform size and shape, and a reflection face, opposite to the output face, having a serrated profile forming a reflection face for the light beam; wherein the reflection face comprises a series of prisms, each prism forming, with the following prism, a bottom angle, said at least one bottom angle of the reflection face being truncated, the size of the truncated area being variable from one angle to another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for a motor vehicle comprising:
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at least one light source in a motor vehicle signal light or headlight configured to emit a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising; a substantially cylindrical cross-section and a curvilinear shape along its length; an output face for the light beam, and a reflection face, opposite to the output face, having a serrated profile made up of a plurality of prisms having planar facets forming a reflection face for the light beam; wherein the output face has a profile comprising flutes of uniform shape and size. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A device for a motor vehicle comprising:
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at least one light source in a motor vehicle signal light or headlight configured to emit a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising; a substantially cylindrical cross-section and a curvilinear shape along its length; an output face for the light beam, and a reflection face, opposite to the output face, having a serrated profile forming a reflection face for the light beam; wherein the reflection face comprises a series of prisms, each prism forming, with the following prism, a bottom angle, said at least one bottom angle of the reflection face being truncated, and further wherein the output face has a profile comprising flutes of uniform shape and size.
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Specification