Display device

• US 20030020880A1
• Filed: 07/19/2002
• Published: 01/30/2003
• Est. Priority Date: 07/27/2000
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Knoll, Peter, Fiess, Reinhold, Eschler, Johannes
• Granted Patent: US 7,275,831 B2
• Time in Patent Office: Days
• US Class Current: 353/13
• CPC Class Codes: B60K 2360/29 Holographic features
• CPC Class Codes: B60K 2370/29 Holographic features
• CPC Class Codes: B60R 1/00 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 Class Codes: B60R 2300/106 using night vision cameras
• CPC Class Codes: B60R 2300/205 using a head-up display
• CPC Class Codes: B60R 2300/207 using multi-purpose displays, e.g. camera image and navigation or video on same display
• CPC Class Codes: B60R 2300/302 combining image information with GPS information or vehicle data, e.g. vehicle speed, gyro, steering angle data
• CPC Class Codes: B60R 2300/8053 for bad weather conditions or night vision
• CPC Class Codes: B60R 2300/8066 for monitoring rearward traffic
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00

Abstract

A display apparatus for displaying images and/or data in a vehicle is proposed. The display apparatus encompasses a projection unit and a display surface, the projection unit being arranged on a vehicle roof and/or on a vehicle inside mirror. The display surface is used in particular to display a real image generated by the projection unit.

Claims

1. A display apparatus in a vehicle, having a projection unit (1, 10) and having a display surface (4), the projection unit (1, 10) being arranged on a vehicle roof (2) and/or on an inside mirror (11) of the vehicle,

wherein a real image is able to be projected by the projection unit (1, 10) onto the display surface (4).

2. The display apparatus as defined in claim 1,

wherein the display surface (4) is arranged on the vehicle in addition to a windshield (8), preferably adjacent to the windshield on an instrument panel (3) of the vehicle.

3. The display apparatus as defined in one of the foregoing claims,

wherein a structural pattern (83) is arranged on the display surface (4);

and projected light can be deflected by the structural pattern (83).

4. The display apparatus as defined in claim 3,

wherein the projected light can be deflected in the direction of a viewer (7).

5. The display apparatus as defined in claim 3,

wherein a reflective surface (70) is arranged adjacent to the display surface (4);

and the projected light can be deflected onto the reflective surface (70).

6. The display apparatus as defined in one of claims 3 through 5,

wherein the structural pattern is configured as a roughening of the display surface.

7. The display apparatus as defined in one of claims 3 through 6,

wherein a layer (82) having a holographically introduced structure is arranged on the display surface (4).

8. The display apparatus as defined in one of claims 3 through 7,

wherein an outer surface (81) having a prism structure and/or a sawtooth structure (83) is arranged on the display surface (4).

9. The display apparatus as defined in one of the foregoing claims,

wherein the display surface (50) is of semi-spherical configuration.

10. The display apparatus as defined in one of the foregoing claims,

wherein a first image can be projected onto a first surface portion (61) of the display surface;

and a second image can be projected onto a second surface portion (62) of the display surface.

11. The display apparatus as defined in one of the foregoing claims,

wherein the projection unit (1, 10) is a video projector.

12. The display apparatus as defined in one of the foregoing claims,

wherein a light source of the projection unit is a laser beam generation unit (31, 32, 33).

13. The display apparatus as defined in claim 12,

wherein movable mirrors (51, 52, 53) are arranged in the projection unit (1, 10);

and the light of the laser beam generation unit (31, 32, 33) can be deflected by the movable mirrors (51, 52, 53).

14. The display apparatus as defined in one of the foregoing claims,

wherein multiple light sources (31, 32, 33) of different colors are arranged in the projection unit.

15. The display apparatus as defined in one of the foregoing claims,

wherein the path of the projected light from the projection unit (1, 10) to the display surface (4) is at least approximately parallel to a windshield (8) of the vehicle.