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US 12,222,081 B2Granted
Illumination device for vehicles
AssigneeCarl Zeiss Jena GmbH
InventorsDaniel Thomae, Roman Kleindienst, Christoph Erler, Petr Vojtisek, Alexandre Gatto
Life of this patent
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Abstract
Light-emitting devices for motor vehicles are provided, which comprise a reflection hologram. A light-guiding body is provided to direct light from a light source arrangement (4) onto the hologram.
Claims28
A light-emitting device for a vehicle, comprising:
- a light-guiding body;
- a light source arrangement configured to emit light in the direction of a first half-space and into the light-guiding body;
- a reflection hologram attached to the light-guiding body and configured to produce a light-emission signature during illumination in a direction that faces in a second half-space located opposite the first half-space;
- and
- a diffractive element attached to the light-guiding body and configured to receive the light from the light source arrangement and redirect the light for illumination of the hologram, the diffractive element including a first surface and a second surface,
- wherein the second surface of the diffractive element and a surface of the reflection hologram that receives light redirected by the diffractive element are arranged in the same plane, and
- wherein the diffractive element is configured to redirect the light for illumination of the hologram via a single reflection of the light received from the light source arrangement.
4 more elements
A light-emitting device for a vehicle, comprising:
- a light-guiding body;
- a light source arrangement configured to emit light in the direction of a first half-space and into the light-guiding body;
- a reflection hologram attached to the light-guiding body and configured to produce a light-emission signature during illumination in a direction that faces in a second half-space located opposite the first half-space;
- and
- a diffractive element attached to the light-guiding body and configured to receive the light from the light source arrangement and redirect the light for illumination of the hologram, wherein the diffractive element comprises a transmissive diffractive element having a first surface arranged to receive light emitted by the light source and a second surface operative to redirect light received at the first surface, the second surface opposite the first surface, and,
- wherein the second surface of the diffractive element and a surface of the reflection hologram that receives light redirected by the diffractive element are arranged in the same plane,
- wherein the diffractive element and the reflection hologram are arranged on a common foil.
4 more elements
A light-emitting device for a vehicle, comprising:
- a light-guiding body;
- a light source arrangement configured to emit light in the direction of a first half-space and into the light-guiding body;
- a reflection hologram attached to the light-guiding body and configured to produce a light-emission signature during illumination in a direction that faces in a second half-space located opposite the first half-space;
- and
- a diffractive element attached to the light-guiding body and configured to receive the light from the light source arrangement and redirect the light for illumination of the hologram, wherein the light source arrangement comprises a plurality of light sources, wherein the diffractive element comprises separate portions for the plurality of light sources, and wherein the plurality of portions are configured to direct light at different angles onto the hologram for selectively producing different light-emission signatures.
2 more elements
A light-emitting device for a vehicle, comprising:
- a light-guiding body;
- a light source arrangement configured to emit light in the direction of a first half-space and into the light-guiding body;
- a reflection hologram attached to the light-guiding body and configured to produce a light-emission signature during illumination in a direction that faces in a second half-space located opposite the first half-space;
- and
- a diffractive element attached to the light-guiding body and configured to receive the light from the light source arrangement and redirect the light for illumination of the hologram, the diffractive element including a first surface,
- wherein the first surface of the diffractive element is arranged in a first plane, and a surface of the reflection hologram that receives light from the diffractive element is arranged in a second plane parallel to the first plane.
3 more elements
Dependencies are inferred from the claim text.