Display device for a motor vehicle, method for generating a virtual display of optical image information, and motor vehicle

Patent metadata

Field	Value
Publication number	US-12017534-B2
Application number	US-201917259797-A
Country	US
Kind code	B2
Filing date	May 10, 2019
Priority date	Jul 13, 2018
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

At least one electronic display has first and second mirrors separated by a distance. The two mirrors are arranged such that they at least partially overlap in a projection view of both mirrors. An intermediate space is formed in the overlap region between the mirrors. The at least one electronic display is part of a display apparatus having at least one light source emitting light into the intermediate space that is reflectable multiple times by the mirrors to generate an infinity mirror effect, resulting in the generation of an image having a light pattern that appears with an optical depth effect in an image plane of the display apparatus.

First claim

The invention claimed is:

1. A display apparatus fora motor vehicle, comprising:
at least one electronic display generating visual image information and having a first mirror and, arranged at a distance therefrom, a second mirror, the first and second mirrors at least partially overlapping in a projection view of both of the first and second mirrors, and forming an intermediate space in an overlap region between the first and second mirrors; and
at least one light source emitting light, into the intermediate space, reflectable multiple times at the first and second mirrors to generate an infinity mirror effect, resulting in generation of an image having a light pattern that appears with an optical depth effect, in an image plane of the display apparatus, the visual image information generated by the at least one electronic display being mirrored into the image plane via the first mirror so that the visual image information is represented in the image in addition to the light pattern, wherein the projected visual image information in the image plane appears as a holographic representation and the image comprises a holographic image comprising an overlay of the visual image information and the light pattern.

2. The display apparatus according to claim 1 , wherein the at least one light source includes a component separate from the at least one electronic display.

3. The display apparatus according to claim 2 , wherein the at least one light source is at least one of a light-emitting diode and a light-emitting diode strip.

4. The display apparatus according to claim 2 , wherein the at least one light source is at least partially arranged in the intermediate space.

5. The display apparatus according to claim 1 , wherein the at least one light source is formed by a partial region of the at least one electronic display, adjoining peripheral sides of the first and second mirrors and extending at least partially over an extent, measured between the first and second mirrors, of the intermediate space.

6. The display apparatus according to claim 5 , wherein the partial region lies directly against the peripheral sides of both of the first and second mirrors and delimits the intermediate space.

7. The display apparatus according to claim 6 ,
wherein the at least one electronic display is formed from multiple display parts,
wherein a first display part of the at least one electronic display that is located upstream of the first mirror generates the visual image information, and
wherein a second display part, extending at least partially over the intermediate space, formed by the partial region and overlapping with the intermediate space as viewed in a direction perpendicular to the first and second mirrors, emits the light into the intermediate space.

8. The display apparatus according to claim 1 , wherein the first mirror is at least partially semi-transparent.

9. The display apparatus according to claim 1 , wherein an angle between the at least one electronic display and the first mirror is greater than 0° and smaller than 90°.

10. The display apparatus according to claim 9 , wherein the angle is at least 45°.

11. A motor vehicle, comprising:
a chassis; and
a display apparatus, including
at least one electronic display generating visual information representable in a virtual image plane and having first and second mirrors separated by a distance, the first and second mirrors at least partially overlapping in a projection view of both of the first and second mirrors, and forming an intermediate space in an overlap region between the first and second mirrors; and
at least one light source emitting light, into the intermediate space, reflectable multiple times at the first and second mirrors to generate an infinity mirror effect, resulting in generation of an image having a light pattern that appears with an optical depth effect, in the virtual image plane of the display apparatus, the visual image information generated by the electronic display being mirrored into the virtual image plane via the first mirror so that the visual image information is represented in the image in addition to the light pattern, wherein the projected visual image information in the image plane appears as a holographic representation and the image comprises a holographic image comprising an overlay of the visual image information and the light pattern.

12. The motor vehicle according to claim 11 , wherein the at least one light source includes a component separate from the at least one electronic display.

13. The motor vehicle according to claim 12 , wherein the at least one light source is at least one of a light-emitting diode and a light-emitting diode strip.

14. The motor vehicle according to claim 12 , wherein the at least one light source is at least partially arranged in the intermediate space.

15. The motor vehicle according to claim 11 , wherein the at least one light source is formed by a partial region of the at least one electronic display, adjoining peripheral sides of the first and second mirrors and extending at least partially over an extent, measured between the first and second mirrors, of the intermediate space.

16. The motor vehicle according to claim 15 , wherein the partial region lies directly against the peripheral sides of both of the first and second mirrors and delimits the intermediate space.

17. The motor vehicle according to claim 16 ,
wherein the at least one electronic display is formed from multiple display parts,
wherein a first display part of the at least one electronic display that is located upstream of the first mirror generates the visual image information, and
wherein a second display part, extending at least partially over the intermediate space, formed by the partial region and overlapping with the intermediate space as viewed in a direction perpendicular to the first and second mirrors, emits the light into the intermediate space.

18. The motor vehicle according to claim 11 , wherein the first mirror is at least partially semi-transparent.

19. The motor vehicle according to claim 11 , wherein an angle between the at least one electronic display and the first mirror is at least 45° and smaller than 90°.

20. A method for generating a virtual representation of visual information in a virtual image plane with a display apparatus, comprising:
reflecting image information from an electronic display of the display apparatus into the virtual image plane using a first mirror of the display apparatus;
emitting at least one light beam from a light source of the display apparatus into an intermediate space between the first mirror and a second mirror of the display apparatus, separated from the first mirror by a distance from the former; and
reflecting the light beam multiple times between the first and second mirrors in the intermediate space to generate an infinity mirror effect, so that an image with a light pattern having an optical depth effect is generated in the virtual image plane of the display apparatus, and the virtual representation of the image information and the light pattern are represented as visual information in the image in the virtual image plane, wherein the projected visual image information in the image plane appears as a holographic representation and the image comprises a holographic image comprising an overlay of the visual image information and the light pattern.

Assignees

• Audi Ag

Inventors

• Lottes Daniel
• Weiss Philipp

Classifications

• B60K35/235

  with means for detecting the driver's gaze direction or eye points · CPC title

• B60K35/60 Primary

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60K2360/338

  Light strips · CPC title

• B60K2360/332

  Light emitting diodes · CPC title

• B60K2360/23

  using reflectors · CPC title