Display device

• US 10,488,655 B2
• Filed: 06/01/2016
• Issued: 11/26/2019
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Kasazumi, Ken'ichi, Mori, Toshiya, Okayama, Hiroaki, Kuzuhara, Satoshi, Furuya, Hiroyuki, Kurozuka, Akira, Nakazono, Shinsuke
• Primary Examiner(s): Eurice, Michael J
• Application Number:
  US15/738,637
• Publication Number:
  US 20180157037A1
• Time in Patent Office: 1,273 Days
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/23 Head-up displays [HUD] optical aspects of head-up displays G02B27/01
• CPC Class Codes: B60R 2300/308 by overlaying the real scene, e.g. through a head-up display on the windscreen
• CPC Class Codes: G02B 2006/0098 for scanning
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0154 with movable elements
• CPC Class Codes: G02B 2027/0183 Adaptation to parameters characterising the motion of the vehicle
• CPC Class Codes: G02B 26/10 Scanning systems
• CPC Class Codes: G02B 26/101 with both horizontal and vertical deflecting means, e.g. raster or XY scanners colour television using laser beams scanning a display screen H04N9/3129
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G06F 2203/04803 Split screen, i.e. subdividing the display area or the window area into separate subareas
• CPC Class Codes: G06V 20/20 in augmented reality scenes
• CPC Class Codes: G09G 1/007 Circuits for displaying split screens
• CPC Class Codes: G09G 2310/0264 Details of driving circuits
• CPC Class Codes: G09G 3/025 with scanning or deflecting the beams in two directions or dimensions

Abstract

A display device displays a virtual image of a first picture and a virtual image of a second picture by using a display medium. This display device includes a light source that emits light, a fixed screen, a movable screen, a driver, and a scanner. The fixed screen is fixedly disposed on an optical path between the light source and the display medium. The movable screen is also disposed on this optical path. The driver moves the movable screen along the optical path. The scanner scans the fixed screen and the movable screen with the light emitted from the light source, thereby forming the first picture on the fixed screen and the second picture on the movable screen.

Claims

1. A display device that displays a virtual image of a first picture and a virtual image of a second picture by using a display medium, the display device comprising:

a light source that emits light;

a fixed screen fixedly disposed on an optical path between the light source and the display medium;

a movable screen disposed on the optical path;

a driver that translates the movable screen along the optical path; and

a scanner that scans the fixed screen and the movable screen with the light emitted from the light source to form the first picture on the fixed screen and the second picture on the movable screen,

wherein the scanner sequentially scans the movable screen and the fixed screen as a series of scanning processes,

wherein the driver linearly translates the movable screen along the optical path, and

wherein the movable screen is a physical structure.

2. The display device according to claim 1, wherein

the movable screen has a cut formed on an end of the movable screen, and

at least a portion of the fixed screen is disposed in the cut.

3. The display device according to claim 1, wherein

the fixed screen and the movable screen are integrated to form a substantially rectangular shape as viewed on the optical path from a location of the scanner, and

a contour of the fixed screen contains at least a portion of one side of the substantially rectangular shape.

4. The display device according to claim 1, wherein the driver is an actuator.

5. The display device according to claim 1, wherein a display distance of the virtual image corresponding to the moving screen is configured to be variable by a translation of the moving screen.

6. The display device according to claim 1, wherein the movable screen translates along a portion of the optical path provided by the scanner.

7. The display device according to claim 1, further comprising an optical system disposed between the display medium, and the fixed and movable screens, on the optical path,

wherein

the first picture is projected onto a first region in the display medium through the optical system and displayed as the virtual image of the first picture,

the second picture is projected onto a second region in the display medium through the optical system and displayed as the virtual image of the second picture, and

the first region and the second region are disposed side by side in a predetermined direction.

8. The display device according to claim 7, wherein the predetermined direction is a vertical or horizontal direction.

9. The display device according to claim 1, wherein the display medium is a windshield of a vehicle.

10. The display device according to claim 9, wherein

the first picture is a picture that indicates information regarding at least one of a running speed, an amount of remaining fuel, and an amount of remaining power in a battery in the vehicle, and a moving object around the vehicle, and

the second picture is a picture that indicates information regarding at least one of an entire route to a destination, a portion of the route, a traffic condition of the route, a condition of a road surface, a traffic lane line or a road shoulder, and a moving object around the vehicle.