Miniturised holographic display

A vehicle, comprising:

• at least one holographic lighting device, comprising:
• at least two channels, wherein each of the at least two channels is assigned to a respective one of the at least two holographic lighting functions
• wherein each of the at least two channels comprises:
• an edge-lit arrangement, comprising:
• an input coupling surface for coupling light from a light source into the edge-lit arrangement;
• and
• an output coupling surface,
• wherein the light source is arranged to radiate into the input coupling surface,
• wherein the edge-lit arrangements of the at least two channels are encompassed in a monolithic component,
• wherein the output coupling surface is a joint output coupling surface,
• wherein each of the at least two channels is arranged about a surface normal to the output coupling surface along an azimuthal arrangement angle, and
• wherein the monolithic component includes at least one holographic structure predominantly parallel to the output coupling surface and configured to produce the lighting function of the respective at least two channels under illumination by the light source,
• wherein the holographic lighting device is configured to display at least one of a plurality of possible information items relating to a driving situation,
• wherein one information item is assigned to a channel of the holographic lighting device,
• wherein the holographic lighting device is arranged in an A pillar, a B pillar and/or a C pillar of the vehicle, and
• wherein the holographic lighting device comprises a display of a lane change assist system.

A method of using a holographic lighting device, comprising:

• providing a holographic lighting device, comprising:
• at least two channels, wherein each of the at least two channels is assigned to a respective one of the at least two holographic lighting functions
• wherein each of the at least two channels comprises:
• an edge-lit arrangement, comprising:
• an input coupling surface for coupling light from a light source into the edge-lit arrangement;
• and
• an output coupling surface,
• wherein the light source is arranged to radiate into the input coupling surface,
• wherein the edge-lit arrangements of the at least two channels are encompassed in a monolithic component,
• wherein the output coupling surface is a joint output coupling surface,
• wherein each of the at least two channels is arranged about a surface normal to the output coupling surface along an azimuthal arrangement angle, and
• wherein the monolithic component includes at least one holographic structure predominantly parallel to the output coupling surface and configured to produce the lighting function of the respective at least two channels under illumination by the light source,
• displaying via the holographic lighting device at least one of a plurality of possible information items in a vehicle relating to a driving situation,
• wherein the at least one of a plurality of possible information items is assigned to a channel of the holographic lighting device;
• and
• wherein, for the purpose of displaying the information, the holographic structure is illuminated by the light source assigned to the channel.

A holographic lighting device for producing at least two holographic lighting functions, comprising:

• at least two channels, wherein each of the at least two channels is assigned to a respective one of the at least two holographic lighting functions
• wherein each of the at least two channels comprises:
• an edge-lit arrangement, comprising:
• an input coupling surface for coupling light from a light source into the edge-lit arrangement;
• and
• an output coupling surface,
• wherein the light source is arranged to radiate into the input coupling surface,
• wherein the edge-lit arrangements of the at least two channels are encompassed in a monolithic component,
• wherein the output coupling surface is a joint output coupling surface,
• wherein each of the at least two channels is arranged about a surface normal to the output coupling surface along an azimuthal arrangement angle,
• wherein the monolithic component includes at least one holographic structure predominantly parallel to the output coupling surface and configured to produce the lighting function of the respective at least two channels under illumination by the light source,
• wherein the edge-lit arrangement of each of the at least two channels includes a reflection surface which is configured for direct reflective illumination of the holographic structure with input-coupled light,
• wherein the reflection surfaces are arranged to at least partly form at least one lateral outer surface of the monolithic component,
• wherein the input coupling surfaces are arranged in the direction of an interior of the monolithic component, and
• wherein the input coupling surfaces are arranged to laterally enclose a partly open inner region of the monolithic component in at least one region.

A holographic lighting device for producing at least two holographic lighting functions, comprising:

• at least two channels, wherein each of the at least two channels is assigned to a respective one of the at least two holographic lighting functions
• wherein each of the at least two channels comprises:
• an edge-lit arrangement, comprising:
• an input coupling surface for coupling light from a light source into the edge-lit arrangement;
• and
• an output coupling surface,
• wherein the light source is arranged to radiate into the input coupling surface,
• wherein the edge-lit arrangements of the at least two channels are encompassed in a monolithic component,
• wherein the output coupling surface is a joint output coupling surface,
• wherein each of the at least two channels is arranged about a surface normal to the output coupling surface along an azimuthal arrangement angle,
• wherein the monolithic component includes at least one holographic structure predominantly parallel to the output coupling surface and configured to produce the lighting function of the respective at least two channels under illumination by the light source,
• wherein the edge-lit arrangement of each of the at least two channels includes a reflection surface which is configured for direct reflective illumination of the holographic structure with input-coupled light,
• wherein the reflection surface comprises a parabolic mirror, the focal plane of which coincides with an emitter surface of the light source, and
• wherein the emitter surface of the light source has an extent of up to 1×1 mm2 and the light source and the assigned reflection surface have a distance of at least 20 mm.