# US 10,769,831 B2 · Head up display

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- Number: US 10,769,831 B2
- Document ID: US10769831B2
- Status: Granted
- Kind: B2
- Application number: 16/315,662
- Filed: 2017-07-12
- Published: 2019-05-09
- Granted: 2020-09-08
- Earliest claimed: 2016-08-29
- Assignees: Maxell, Ltd.
- Applicants: Maxell, Ltd.
- Inventors: Nozomu Shimoda; Yuji Fujita; Takeshi Arakawa; Akio Misawa
- Web page: https://patentgrep.com/patent/US10769831B2

## CPC

- G08G 1/0962: having an indicator mounted inside the vehicle, e.g. giving voice messages
- B60K 35/00: Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K 35/211: {producing three-dimensional [3D] effects, e.g. stereoscopic images}
- B60K 35/23: Head-up displays [HUD] (optical aspects of head-up displays G02B27/01)
- G01C 21/36: Input/output arrangements for on-board computers
- G02B 27/01: Head-up displays
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- G02B 27/0179: {Display position adjusting means not related to the information to be displayed}
- G06T 11/60: Creating or editing images; Combining images with text
- G08G 1/0969: having a display in the form of a map
- G09G 3/001: {using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background (slide projectors per se G03B23/00 = 42 HP)}
- B60K 35/234: controlling the brightness, colour or contrast of virtual images depending on the driving conditions or on the condition of the vehicle or the driver
- B60K 35/265: {Voice}
- B60K 35/81: for controlling displays
- B60K 2360/334: Projection means
- G01C 21/365: {Guidance using head up displays or projectors, e.g. virtual vehicles or arrows projected on the windscreen or on the road itself}
- G02B 2027/014: {comprising information/image processing systems}
- G02B 2027/0183: {Adaptation to parameters characterising the motion of the vehicle}
- G09G 2340/0464: Positioning
- G09G 2340/12: Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
- G09G 2380/10: Automotive applications
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A head up display superimposes a virtual image on an actual view in accordance with a traveling status of a vehicle. Vehicle information containing a lean of the vehicle in a pitch direction is detected by a first posture sensor, and a lean in a roll direction is detected by a second posture sensor. A controller controls display of video on the basis of the vehicle information. A mirror reflects the video to project the video to a windshield or combiner. A mirror driver changes an angle and/or a position of the mirror. At least one of a display state of the virtual image in a display area for the video or the angle and/or the position of the mirror via the mirror driver is adjusted by the controller on the basis of the lean in the pitch direction and/or the lean in the roll direction.

## Claims

### Claim 1

A head up display for a vehicle, comprising:
a vehicle information acquiring unit configured to acquire vehicle information containing a lean of the vehicle in a pitch direction, which is detected by a first posture sensor, and a lean in a roll direction, which is detected by a second posture sensor, the first and second posture sensors being mounted on the vehicle;
a controller configured to control display of video on a basis of the vehicle information acquired by the vehicle information acquiring unit;
a video display configured to form the video in accordance with an instruction from the controller;
a mirror configured to reflect the video formed by the video display to project the video directly on to a windshield having a curvature; and
a mirror driver configured to change an angle and/or a position of the mirror on a basis of an instruction from the controller,
wherein the controller is configured to adjust at least one of a display state of a virtual image in a display area for the video or the angle and/or the position of the mirror via the mirror driver on a basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information so that the virtual image is superimposed onto a scene and the virtual image can be displayed to a driver,
wherein the controller is further configured to control display of the video to correct for distortion which occurs due to the curvature of the windshield,
wherein in a case where the display state of the virtual image is adjusted and an adjusting amount is smaller than a predetermined value, the controller is configured to adjust the display state of the virtual image in the display area for the video on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and
wherein in a case where an adjusting amount is equal to or more than a predetermined value, the controller is configured to adjust the angle and/or the position of the mirror via the mirror driver on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and further adjust the display state of the virtual image in the display area for the video.

### Claim 2 (depends on 1)

The head up display according to claim 1,
wherein the controller is configured to restrict, in a case where the display state of the virtual image is adjusted and the virtual image goes out from the display area, the adjustment to a state where at least a part of the virtual image is displayed at an end portion of the display area.

### Claim 3 (depends on 1)

The head up display according to claim 1,
wherein a table is held in a nonvolatile memory, settings of a moving amount of the virtual image in a vertical direction with respect to each value of the lean in the pitch direction and settings of a rotating amount of the virtual image in a horizontal direction with respect to each value of the lean in the roll direction in the vehicle information being held in the table, and
wherein the controller is configured to acquire corresponding values of the moving amount of the virtual image in the vertical direction and/or the rotating amount of the virtual image in the horizontal direction from the table on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information.

### Claim 4 (depends on 3)

The head up display according to claim 3,
wherein in the table, each of the values of the moving amount of the virtual image in the vertical direction and/or the rotating amount of the virtual image in the horizontal direction is set to zero in a range in which each of absolute values of the lean in the pitch direction and/or the lean in the roll direction is smaller than a predetermined value.

### Claim 5 (depends on 3)

The head up display according to claim 3,
wherein the controller is configured to calculate information related to the settings of the table on a basis of a past performance of the vehicle information, and update content of the table.

### Claim 6

A head up display for a vehicle, comprising:
a vehicle information acquiring unit configured to acquire vehicle information containing a lean of the vehicle in a pitch direction, which is detected by a first posture sensor, and a lean in a roll direction, which is detected by a second posture sensor, the first and second posture sensors being mounted on the vehicle;
a controller configured to control display of video on a basis of the vehicle information acquired by the vehicle information acquiring unit;
a video display configured to form the video in accordance with an instruction from the controller;
a mirror configured to reflect the video formed by the video display to project the video to a windshield or combiner; and
a mirror driver configured to change an angle and/or a position of the mirror on a basis of an instruction from the controller,
wherein the controller is configured to adjust at least one of a display state of a virtual image in a display area for the video or the angle and/or the position of the mirror via the mirror driver on a basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information so that the virtual image is superimposed onto a scene and the virtual image can be displayed to a driver,
wherein in a case where the display state of the virtual image is adjusted and an adjusting amount is smaller than a predetermined value, the controller is configured to adjust the display state of the virtual image in the display area for the video on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and
in a case where an adjusting amount is equal to or more than a predetermined value, the controller is configured to adjust the angle and/or the position of the mirror via the mirror driver on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and further adjust the display state of the virtual image in the display area for the video.