Apparatus for generating a virtual image having a variable projection distance
AssigneeContinental Automotive GmbH
InventorsWolff von Spiegel, Björn Pablo Richter, Willi Scheffler-Juschtschenko
Life of this patent
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Abstract
A device for generating a virtual image. The device has at least one image-generating unit for producing an image and an optical waveguide for expanding an exit pupil. The optical waveguide has an output coupling region. An optical element for influencing a projection distance for at least a partial region of the virtual image is arranged adjacent to the output coupling region.
Claims13
A non-wearable device for generating a virtual image in a vehicle, comprising:
- an image-generating unit located in the vehicle for producing an image;
- an optical waveguide for expanding an exit pupil;
- an output coupling region being part of the optical waveguide;
- an optical element for influencing a projection distance for at least a partial region of the virtual image is arranged adjacent to the output coupling region, wherein the optical element has at least two volume holograms arranged next to one another and at different vertical heights with respect to the output coupling region, and wherein at least one projection plane in a near range and at least one projection plane in a far range are realized at the same time by way of the optical element;
- and
- at least one strip-shaped volume hologram wherein the strip-shaped volume hologram is arranged between the at least two volume holograms that are arranged next to one another.
A means of transport vehicle having a non-wearable device for generating a virtual image, comprising:
- an image-generating unit located in the vehicle for producing an image;
- an optical waveguide for expanding an exit pupil;
- an output coupling region being part of the optical waveguide;
- an optical element for influencing a projection distance for at least a partial region of the virtual image is arranged adjacent to the output coupling region, wherein the optical element has at least two volume holograms arranged next to one another and at different vertical heights with respect to the output coupling region, and wherein at least one projection plane in a near range and at least one projection plane in a far range are realized at the same time by way of the optical element;
- and
- at least one strip-shaped volume hologram wherein the strip-shaped volume hologram is arranged between the at least two volume holograms that are arranged next to one another,
- wherein the non-wearable device generates a virtual image for an operator of the means of transport vehicle.
A non-wearable device configured to generate a virtual image in a vehicle, comprising:
- an image-generating unit located in the vehicle for producing an image;
- an optical waveguide for expanding an exit pupil;
- an output coupling region being part of the optical waveguide;
- an optical element for influencing a projection distance for at least a partial region of the virtual image is arranged adjacent to the output coupling region, wherein the optical element has at least two volume holograms arranged next to one another at different vertical heights with respect to the output coupling region, and wherein at least one projection plane in a near range and at least one projection plane in a far range are realized at the same time by way of the optical element;
- and
- at least one strip-shaped volume hologram wherein the strip-shaped volume hologram is arranged between the at least two volume holograms that are arranged next to one another,
- wherein the strip-shaped volume hologram is arranged vertically between the at least two volume holograms that are arranged next to one another.
Dependencies are inferred from the claim text.