Holographic lighting device
AssigneeCarl Zeiss Jena GmbH
InventorSiemen Kuehl
Life of this patent
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Abstract
The invention relates to a lighting device for a vehicle having at least one lighting channel for generating a holographic light function assigned to this lighting channel by lighting a holographic structure of the lighting channel. Each channel includes a lighting assembly and a coupling-in surface of a light guide body disposed along a main beam direction of the lighting assembly. The lighting device also includes a holographic structure disposed on the coupling-out surface of the light guide body. The coupling-out surface is disposed in a beam path of the coupled-in light beams, so that lighting of the coupling-out surface takes place at an angle which is greater than a critical angle of the total reflection. The invention also relates to a rear light for a vehicle and to a vehicle.
Claims22
An illumination device for a vehicle with at least one illumination channel for generating a holographic lighting function assigned to this illumination channel by illumination of a holographic structure of the illumination channel, the illumination device comprising:
- an illumination arrangement of the illumination channel that generates illumination light;
- a light guide body having an input coupling surface arranged along a radiation main direction of the illumination arrangement;
- and
- an output coupling surface of the light guide body at which the holographic structure is arranged,
- wherein the output coupling surface is arranged in a beam path of light rays of the illumination light which are input-coupled into the light guide body for illumination of the output coupling surface at an angle greater than a critical angle of the total internal reflection, and
- wherein each input-coupled light ray which reaches the output coupling surface and which is not diffracted by the holographic structure does not reach the output coupling surface again due to total internal reflection.
An illumination device for a vehicle with at least one illumination channel for generating a holographic lighting function assigned to this illumination channel by illumination of a holographic structure of the illumination channel, the illumination device comprising:
- an illumination arrangement of the illumination channel that generates illumination light;
- a light guide body having an input coupling surface arranged along a radiation main direction of the illumination arrangement;
- and
- an output coupling surface of the light guide body at which the holographic structure is arranged,
- wherein the output coupling surface is arranged in a beam path of light rays of the illumination light which are input-coupled into the light guide body for illumination of the output coupling surface at an angle greater than a critical angle of the total internal reflection,
- wherein the holographic structure comprises at least one reflective hologram, and
- wherein the reflective hologram and the output coupling surface are configured and/or arranged to generate the holographic lighting function after a reflection of the input-coupled light rays at the output coupling surface.
Dependencies are inferred from the claim text.