Display device, display control method, and storage medium

Patent metadata

Field	Value
Publication number	US-2020105231-A1
Application number	US-201916559817-A
Country	US
Kind code	A1
Filing date	Sep 4, 2019
Priority date	Sep 27, 2018
Publication date	Apr 2, 2020
Grant date	—

Abstract

A display device includes a light projection device which projects light including an image, an optical mechanism which is capable of adjusting a distance from a predetermined position to a position where the light is formed as a virtual image, a concave mirror which reflects light toward a reflector, a concave mirror actuator which adjusts a reflection angle of the concave mirror, and a control device which controls the light projection device and the concave mirror actuator, in which the control device adjusts a projection position on a projection surface of the light projected from the light projection device having an angle formed by a horizontal surface passing through a predetermined position on an image and a segment from the predetermined position to a position where the light is formed as a virtual image so as to curb fluctuation occurring due to movement of a vehicle.

First claim

What is claimed is:

1 . A display device comprising:
a light projection device which has a two-dimensional projection surface and projects light including an image; an optical mechanism which is provided on a path of the light and is capable of adjusting a distance from a predetermined position to a position where the light is formed as a virtual image; a concave mirror which reflects light having passed through the optical mechanism toward a reflector; a concave mirror actuator which adjusts a reflection angle of the concave mirror; and a control device which controls the light projection device and the concave mirror actuator, wherein the control device adjusts a projection position on the projection surface of the light projected from the light projection device having an angle formed by a horizontal surface passing through a predetermined position on an image formed by the concave mirror and a segment from the predetermined position to a position where the light is formed as a virtual image so as to curb fluctuation occurring due to movement of a vehicle.

2 . The display device according to claim 1 , further comprising:
an operator which receives an adjustment operation for the angle formed by the horizontal surface and the segment from an occupant of the vehicle, wherein the control device adjusts the angle by driving the concave mirror actuator on the basis of the adjustment operation in a case where the adjustment operation for the angle is received by the operator, and adjusts the projection position on the projection surface of the light projected from the light projection device in a case where fluctuation in the angle occurring due to movement of the vehicle is curbed.

3 . The display device according to claim 2 , wherein the control device receives the adjustment operation for the angle of the operator and further adjusts the projection position on the projection surface of the light projected from the light projection device in a case where driving of the concave mirror due to the driving of the concave mirror actuator based on the received adjustment operation has reached a limit, thereby adjusting the angle formed by the horizontal surface and the segment.

4 . The display device according to claim 3 , further comprising:
a notification controller which notifies the occupant of the vehicle of information using a notifier, wherein the notification controller inquires of the occupant using the notifier whether to adjust the projection position on the projection surface of the light projected from the light projection device in a case where the driving of the concave mirror due to the driving of the concave mirror actuator has reached a limit.

5 . The display device according to claim 1 , wherein the control device adjusts the projection position on the projection surface of the light projected from the light projection device and then adjusts the reflection angle of the concave mirror due to the driving of the concave mirror actuator, thereby adjusting the angle formed by the horizontal surface and the segment.

6 . A display control method comprising:
causing a display device to adjust a projection position on a projection surface of light projected from a light projection device having an angle formed by a horizontal surface passing through a predetermined position on an image formed by a concave mirror and a segment from the predetermined position to a position where the light is formed as a virtual image so as to curb fluctuation occurring due to movement of a vehicle, the display device including the light projection device which has a two-dimensional projection surface and projects light including an image, an optical mechanism which is provided on a path of the light and is capable of adjusting a distance from the predetermined position to the position where the light is formed as a virtual image, the concave mirror which reflects light having passed through the optical mechanism toward a reflector, a concave mirror actuator which adjusts a reflection angle of the concave mirror, and a control device which controls the light projection device and the concave mirror actuator.

7 . A computer readable non-transitory storage medium storing a program for causing a display device to adjust a projection position on a projection surface of light projected from a light projection device having an angle formed by a horizontal surface passing through a predetermined position on an image formed by a concave mirror and a segment from the predetermined position to a position where the light is formed as a virtual image so as to curb fluctuation occurring due to movement of a vehicle, the display device including the light projection device which has a two-dimensional projection surface and projects light including an image, an optical mechanism which is provided on a path of the light and is capable of adjusting a distance from the predetermined position to the position where the light is formed as a virtual image, the concave mirror which reflects light having passed through the optical mechanism toward a reflector, a concave mirror actuator which adjusts a reflection angle of the concave mirror, and a control device which controls the light projection device and the concave mirror actuator.

Assignees

• Honda Motor Co Ltd

Inventors

• Higashiyama Masafumi
• Kimura Takuya
• Kawakami Shinji
• Iwasa Tatsuya
• Kuwashima Yuji

Classifications

• G06F3/0484 Primary

  for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range · CPC title

• G06F3/013

  Eye tracking input arrangements (G06F3/015 takes precedence) · CPC title

• G06F3/0346

  with detection of the device orientation or free movement in a three-dimensional [3D] space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G09G2340/0464

  Positioning · CPC title