Display device, in particular for vehicle, and vehicle having display device with volume hologram

Patent metadata

Field	Value
Publication number	US-11493758-B2
Application number	US-201816651016-A
Country	US
Kind code	B2
Filing date	Sep 20, 2018
Priority date	Sep 27, 2017
Publication date	Nov 8, 2022
Grant date	Nov 8, 2022

Abstract

A volume hologram is arranged inside a transparent portion of a pane of a display device for a vehicle. The display device further includes a light source by which light is coupled into the volume hologram. An image appearing three-dimensional to a human observer can be generated by use of the volume hologram. A camera includes a light-sensitive image sensor to acquire images via an optical unit which is at least partially formed by the transparent portion of the pane.

First claim

The invention claimed is:

1. A display device, comprising:
a pane having a transparent portion, a side of the pane having a reflection layer;
a camera device including an image sensor configured to acquire images in an acquisition region formed by the transparent portion of the pane, the image sensor arranged on and in contact with another side of the pane directly opposite of the reflection layer;
a volume hologram including an optical element, arranged inside the transparent portion of the pane; and
a light source to provide light which is to be coupled into the volume hologram to generate an image appearing three-dimensional to a human observer via the volume hologram, the optical element decoupling a light beam corresponding to the light out of the pane and onto the image sensor.

2. The display device according to claim 1 , wherein the volume hologram includes a plurality of optical elements by which the light beam, which is incident at at least one first point in the pane, is to be conducted to at least one second point, different from the first point, at which the light beam is decoupled from the pane.

3. The display device according to claim 2 , wherein the light provided by the light source is coupled into the pane at the first point.

4. The display device according to claim 2 , wherein the light beam decoupled out of the pane at the second point is acquirable by the image sensor.

5. The display device according to claim 1 , wherein the image sensor includes a plurality of image sensors, and at least one image sensor among the plurality of image sensors is arranged on and in contact with a narrow side of the pane, and/or at least one image sensor among the plurality of image sensors is arranged on a surface of an end face of the pane.

6. The display device according to claim 1 , wherein the volume hologram is formed by at least one film arranged inside the pane.

7. The display device according to claim 1 , wherein the pane is formed as a side window or windscreen of a vehicle.

8. The display device according to claim 1 , wherein the image is optically perceptible by the human observer in at least one image plane arranged in front of and/or behind the pane.

9. The display device according to claim 1 , wherein the transparent portion is at least partially provided with an opaque switchable layer.

10. A vehicle, comprising:
a chassis; and
a display device, including:
a pane having a transparent portion, a side of the pane having a reflection layer;
a camera device including an image sensor configured to acquire images in an acquisition region formed by the transparent portion of the pane, the image sensor arranged on and in contact with another side of the pane directly opposite of the reflection layer;
a volume hologram including an optical element, arranged inside the transparent portion of the pane; and
a light source to provide light which is to be coupled into the volume hologram to generate an image appearing three-dimensional to a human observer via the volume hologram, the optical element decoupling a light beam corresponding to the light out of the pane and onto the image sensor.

11. The vehicle according to claim 10 , wherein the volume hologram includes a plurality of optical elements by which the light beam, which is incident at at least one first point in the pane, is to be conducted to at least one second point, different from the first point, at which the light beam is decoupled from the pane.

12. The vehicle according to claim 11 , wherein the light beam provided by the light source is coupled into the pane at the first point.

13. The vehicle according to claim 11 , wherein the light beam decoupled out of the pane at the second point is acquirable by the image sensor.

14. The vehicle according to claim 10 , wherein the image sensor is arranged directly on and in contact with the another side of the pane.

15. The vehicle according to claim 10 , wherein the volume hologram is formed by at least one film arranged inside the pane.

16. The vehicle according to claim 10 , further comprising:
at least one of a side window or a windscreen,
wherein the pane of the display device is formed as the at least one of the side window or the windscreen.

17. The vehicle according to claim 10 , wherein the image is optically perceptible by the human observer in at least one image plane arranged in front of and/or behind the pane.

18. The vehicle according to claim 10 , wherein the transparent portion is at least partially provided with an opaque switchable layer.

Assignees

• Audi Ag

Inventors

• Schwartze Sebastian
• Klug Markus
• Schwager André
• Kezze Muhammad Ali

Classifications

• B60R1/001

  integrated in the windows, e.g. Fresnel lenses · CPC title

• G02B2027/0185

  Displaying image at variable distance · CPC title

• G02B27/0101

  characterised by optical features (G02B27/0172 takes precedence) · CPC title

• G02B27/0103 Primary

  comprising holographic elements · CPC title

• B60R1/00

  Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles · CPC title