HEAD-UP DISPLAY DEVICE AND VEHICLE

• US 20180015876A1
• Filed: 09/26/2017
• Published: 01/18/2018
• Est. Priority Date: 03/24/2016
• Status: Active Grant

• Current Assignee: Panasonic Automotive Systems Company of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: YAMAGATA, Michihiro, MATSUZAKI, Keiichi
• Granted Patent: US 10,427,598 B2
• Time in Patent Office: Days
• CPC Class Codes: B60K 2360/23 using reflectors
• CPC Class Codes: B60K 2360/334 Projection means
• 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: B60K 35/654 the user being the driver
• CPC Class Codes: B60K 35/658 the instruments being ergonomically adjustable to the user
• CPC Class Codes: B60Q 3/12 lighting onto the surface to be illuminated
• CPC Class Codes: B60Q 3/50 Mounting arrangements for compartments other than passenger or driving compartments B60Q3/30; specially adapted for specific vehicle types B60Q3/40
• CPC Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0154 with movable elements
• CPC Class Codes: G02B 2027/0159 with mechanical means other than scaning means for positioning the whole image
• CPC Class Codes: G02B 2027/0185 Displaying image at variable distance
• CPC Class Codes: G02B 26/0816 by means of one or more reflecting elements
• 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: G03B 21/142 Adjusting of projection optics
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: G03B 29/00 Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects combinations with flash apparatus G03B15/03
• CPC Class Codes: H04N 9/3138 using arrays of modulated light sources electroluminescent display devices G09G3/30
• CPC Class Codes: H04N 9/317 : Convergence or focusing systems electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53

Abstract

A head-up display device includes a display element, a movable mirror, one or more first and second mirrors, and an movable unit. The display element emits light to form a display image. The movable mirror first reflects light emitted from the display element. The one or more first and second mirrors reflect light reflected off the movable mirror to project a virtual image. The movable unit adjusts a position of the movable mirror to adjust a projection distance of the virtual image. The movable mirror is disposed at a position such that light incident to the movable mirror is non-parallel to a normal of the movable mirror.

Claims

1. A head-up display device comprising:

a display device that emits light to form a display image;

a first optical member that first reflects light emitted from the display device;

one or more second optical members that reflect or transmit the reflected light of the first optical member to project a virtual image; and

an adjuster that adjusts a position of the first optical member to adjust a projection distance of the virtual image,

wherein the first optical member is positioned such that incident light to the first optical member is non-parallel to a normal of the first optical member, and

wherein the display device shifts a display position of the display image in its display area in accordance with a position of the first optical member.

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

the adjuster moves the first optical member in a direction in which a surface distance between the first optical member and the second optical member changes.

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

the first optical member is a substantially plane mirror.

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

the first optical member is a free-form surface mirror, an aspherical mirror, or a spherical mirror.

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

the display includes an illumination member, and

the illumination member shifts an illumination area in accordance with the display position.

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

a relationship in the following expression is satisfied,

wherein a moving distance of the first optical member is indicated as δ

d, an angle formed by a first light beam emitted from the center of a display image displayed in the display device, and a normal of the display device, is indicated as φ

, an incident angle of the first light beam to the first optical member is indicated as θ

, and a distance of display position shift of a display image in the display device in accordance with movement of the first optical member is indicated as δ

y.

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

the display device is disposed such that it emits light toward a predetermined tilted direction from the normal of its display area and the emitted light forms the virtual image, and

the predetermined direction is identical to a direction in which a display position of an image in the display device is shifted to reduce a display distance of the virtual image.

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

the adjuster adjusts a projection distance of a virtual image based on the travel location information on a vehicle.

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

the adjuster adjusts a projection distance of a virtual image based on the vehicle speed information.

10. The head-up display device according to claim 1, further comprising:

an image processing unit that adjusts the display image,

the image processing unit adjusting display magnification of the display image in accordance with a position of the first optical member.

11. The head-up display device according to claim 1, further comprising:

an image processing unit that adjusts the display image,

the image processing unit correcting image distortion of the display image in accordance with a position of the first optical member.

12. The head-up display device according to claim 1, further comprising:

a third optical member that reflects light emitted from the display device,

wherein the second optical member reflects or transmits the reflected light of the third optical member to project a virtual image different from the said virtual image.

13. A vehicle comprising the head-up display device according to claim 1.