Image display device

Patent metadata

Field	Value
Publication number	US-2022013088-A1
Application number	US-201817052218-A
Country	US
Kind code	A1
Filing date	Jun 22, 2018
Priority date	Jun 22, 2018
Publication date	Jan 13, 2022
Grant date	—

Abstract

An image display device includes a panel in a curved surface shape that lets through and reflects light, a first display unit that displays a first image based on first image data that reaches a predetermined position through the panel, a second display unit that displays a second image based on second image data that is reflected by the panel and reaches the predetermined position, a position information acquisition unit that acquires position information indicating a position of an actual viewpoint of an observer, and an image processing unit that determines a scaling factor of the second image data for each scan line based on the position information and performs a scaling process for each scan line on the second image data to be inputted to the second display unit.

First claim

1 . An image display device comprising:
a panel in a curved surface shape to let through and reflect incident light; a first display device to display a first image that reaches a predetermined position through the panel, the first image being based on first image data; a second display device to display a second image that is reflected by the panel and reach the predetermined position, the second image being based on second image data; and processing circuitry to acquire position information indicating a position of an actual viewpoint of an observer observing the first image and the second image, to determine a scaling factor of the second image data for each scan line based on the position information, and to perform a scaling process for each scan line on the second image data to be inputted to the second display device by using the scaling factor.

2 . The image display device according to claim 1 , wherein the panel is in a concave surface shape as viewed from the viewpoint.

3 . The image display device according to claim 2 , wherein a cross section of the panel slicing the panel at a horizontal plane including a line of sight heading from the viewpoint towards the panel is in a straight shape, and a cross section of the panel slicing the panel at a vertical plane including the line of sight is in an arc-like shape.

4 . The image display device according to claim 3 , wherein the scaling process for each scan line is a scaling process in a horizontal scan line direction.

5 . The image display device according to claim 2 , wherein a cross section of the panel slicing the panel at a horizontal plane including a line of sight heading from the viewpoint towards the panel is in an arc-like shape, and a cross section of the panel slicing the panel at a vertical plane including the line of sight is in a straight shape.

6 . The image display device according to claim 5 , wherein the scaling process for each scan line is a scaling process in a vertical scan line direction.

7 . The image display device according to claim 1 , wherein the processing circuitry performs a process of scaling the first image based on the first image data.

8 . The image display device according to claim 1 , wherein the processing circuitry performs the scaling process for each scan line so that a real image surface recognized by the observer as a place where a real image corresponding to the first image exists and a virtual image surface recognized by the observer as a place where a virtual image corresponding to the second image exists intersect with each other.

9 . The image display device according to claim 1 , wherein the processing circuitry performs the scaling process for each scan line so that a real image surface recognized by the observer as a place where a real image corresponding to the first image exists and a virtual image surface recognized by the observer as a place where a virtual image corresponding to the second image exists intersect with each other and an angle formed by the real image surface and the virtual image surface is maintained at a constant angle.

10 . The image display device according to claim 8 , wherein
the processing circuitry previously stores reference information indicating a relationship between the position information and the virtual image surface as a database, and the processing circuitry calculates the scaling factor for each scan line based on the position information and the reference information in the database.

11 . The image display device according to claim 8 , wherein
the processing circuitry acquires vehicle information indicating condition of a vehicle equipped with the image display device, and the processing circuitry calculates the scaling factor for each scan line based on the vehicle information.

Assignees

• Mitsubishi Electric Corp

Inventors

• KIKUTA Hayato
• Yoshii Hideki
• Nakamura Yoshitomo

Classifications

• B60K35/22

  Display screens · CPC title

• G09G2380/10

  Automotive applications · CPC title

• G09G5/373 Primary

  for modifying the size of the graphic pattern · CPC title

• G09G2300/023

  Display panel composed of stacked panels · CPC title

• G09G3/003 Primary

  to produce spatial visual effects · CPC title