Display device, control method for placement of a virtual image on a projection surface of a vehicle, and storage medium

Patent metadata

Field	Value
Publication number	US-10971116-B2
Application number	US-201916559817-A
Country	US
Kind code	B2
Filing date	Sep 4, 2019
Priority date	Sep 27, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

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 projection surface and projects light including an image, wherein the projection surface is a two-dimensional projection surface;
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;
a control device which controls the light projection device and the concave mirror actuator; and
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 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,
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,
wherein the control device 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.

2. The display device according to claim 1 , 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.

3. 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.

4. 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,
adjusting 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 an 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,
adjusting 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,
the display device including the light projection device which has the projection surface and projects light including an image, wherein the projection surface is a two-dimensional projection surface,
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,
a control device which controls the light projection device and the concave mirror actuator, and
an operator which receives an adjustment operation for the angle formed by the horizontal surface and the segment from an occupant of the vehicle.

5. 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,
adjusting 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 an 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,
adjusting 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,
the display device including the light projection device which has the projection surface and projects light including an image, wherein the projection surface is a two-dimensional projection surface,
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, and
an operator which receives an adjustment operation for the angle formed by the horizontal surface and the segment from an occupant of the vehicle.

Assignees

• Honda Motor Co Ltd

Inventors

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

Classifications

• B60K35/233

  controlling the size or position in display areas of virtual images depending on the condition of the vehicle or the driver · CPC title

• B60K35/53

  Movable instruments, e.g. slidable · CPC title

• B60K35/81

  for controlling displays · CPC title

• B60K35/28

  characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver · CPC title

• G02B27/0149

  characterised by mechanical features (G02B27/0176 takes precedence) · CPC title