Head-up display

• US 10,302,940 B2
• Filed: 04/14/2016
• Issued: 05/28/2019
• Est. Priority Date: 05/13/2015
• Status: Expired due to Fees

• Current Assignee: Nippon Seiki Company Limited
• Original Assignee: Nippon Seiki Company Limited
• Inventors: Matsuura, Kazuya, Kikuchi, Yuta, Kawai, Takeru, Yamazoe, Takashi, Takahashi, Yuichi
• Primary Examiner(s): Cheng, Joe H
• Application Number:
  US15/572,005
• Publication Number:
  US 20180143431A1
• Time in Patent Office: 1,139 Days
• CPC Class Codes: B60K 2360/31 Virtual images
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/10 Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: B60K 35/23 Head-up displays [HUD] optical aspects of head-up displays G02B27/01
• CPC Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• CPC Class Codes: G02B 2027/0129 comprising devices for correcting parallax
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0136 with a single image source for both eyes
• 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 2027/0181 Adaptation to the pilot/driver
• CPC Class Codes: G02B 2027/0183 Adaptation to parameters characterising the motion of the vehicle
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• 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: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence
• CPC Class Codes: G06V 20/20 in augmented reality scenes
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06

Abstract

Provided is a head-up display which facilitates the differentiation of information contained in a stereoscopic display and which enables display having a stereoscopic effect, by rotating either a first display surface of a first image generation unit corresponding to a first virtual image display surface, or a reflection unit for aiming first display light emitted from the first image generation unit at a front window shield (transmission/reflection unit), to change the angle formed by the first virtual image display surface and a second virtual image display surface.

Claims

1. A head-up display mounted on a vehicle and capable of displaying a virtual image respectively on a first virtual image display surface and a second virtual image display surface by projecting display light onto a transmissive reflector, comprising:

a first image display unit comprising a first display surface corresponding to the first virtual image display surface and emitting first display light for displaying a first virtual image from the first display surface;

a second image display unit comprising a second display surface corresponding to the second virtual image display surface and emitting second display light for displaying a second virtual image from the second display surface;

a relay optics that directs to the transmissive reflector the first and second display lights emitted from the first and second image display units;

an actuator capable of adjusting an angle on a real space where the first virtual image display surface is generated, by rotating at least one of the first display surface and the relay optics; and

a control unit that controls the actuator and changes an angle formed between the first virtual image display surface and the second virtual image display surface.

2. The head-up display according to claim 1, wherein the first virtual image display surface is inclined in a horizontal direction from the second virtual image display surface.

3. The head-up display according to claim 1, wherein

the first virtual image display surface is generated at a position farther from a viewer than the second virtual image display surface.

4. The head-up display according to claim 1, wherein the first virtual image display surface is arranged parallel to a horizontal direction.

5. The head-up display according to claim 1, wherein

the first virtual image display surface and the second virtual image display surface are arranged to be separated from each other as viewed from a viewer.

6. The head-up display according to claim 1, further comprising a vehicle attitude information acquisition means for acquiring vehicle attitude information including information on a vehicle attitude of the vehicle,

the control unit drives the actuator based on the vehicle attitude information acquired by the vehicle attitude information acquisition means.

7. The head-up display according to claim 6, wherein

the control unit increases a driving amount of the actuator according to a magnitude of a change in the vehicle attitude acquired by the vehicle attitude information acquisition means.

8. The head-up display according to claim 6, wherein

when obtaining a change in the vehicle attitude acquired by the vehicle attitude information acquisition means, the control unit drives the actuator so that an angle formed by the first virtual image display surface and a road surface on which the vehicle travels is maintained at an angle before a behavior of the vehicle occurs.

9. The head-up display according to claim 6, wherein

the control unit determines a use area to be used for displaying the image that is a part of the first display surface of the first image display unit, in accordance with a magnitude of a change in the vehicle attitude acquired by the vehicle attitude information acquisition means.