JP2018184114A - Head-up display device and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display image information without disturbing comfortable driving.SOLUTION: A head-up display device 100 comprises: a display unit 110 for irradiating display light; an optical system 120 that allows a visually recognizing person to visually recognize a virtual image by guiding the display light from the display unit to a window shield; a virtual image position adjusting part 130 that adjusts an irradiation position of the virtual image by varying a distance between the display unit 110 and the optical system 120 or an angle of a mirror that the optical system 120 comprises; a view point position detecting part 140 that detects a view point of the visually recognizing person; and a control part 150 that controls the virtual image position adjusting part so that the irradiation position of the virtual image is varied based on the view point of the visually recognizing person detected by the view point position detecting part.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a head-up display device and a display method.

  The head-up display device expands display light emitted from the display unit with a concave mirror, and irradiates the front display with the expanded display light. The viewer (driver) receives the display light reflected on the windshield, and visually recognizes the virtual image by the display light on the background that can be seen through the windshield.

Japanese Patent Laid-Open No. 2006-86355

  Patent Document 1 discloses a technique for displaying latent danger information with a head-up display device. However, the displayed information is often unnecessary for the driver after recognition, and there is a possibility that comfortable driving may be hindered when the driver drives while looking at the outside world.

  The present invention has been made in view of the above problems, and an object thereof is to provide a head-up display device and a display method for displaying image information so as not to disturb comfortable driving.

In order to achieve the above object, a head-up display device according to the present invention includes:
A display unit that emits display light;
An optical system that allows a viewer to visually recognize a virtual image by guiding the display light from the display unit to a display unit;
A virtual image position adjusting unit that adjusts a display position of the virtual image by controlling at least one of the display unit and the optical system;
A viewpoint position detection unit that detects a viewpoint position at which the line of sight of the viewer is poured;
A control unit that controls the virtual image position adjustment unit to change the display position of the virtual image based on the viewpoint position detected by the viewpoint position detection unit;
Is provided.

In order to achieve the above object, a display method according to the present invention includes:
Detecting the viewpoint position where the viewer's gaze is poured,
The imaging position is adjusted based on the detected viewpoint position, and a virtual image of the display target image is projected.

  According to the present invention, since the display position of the virtual image can be adjusted based on the visual line position of the viewer, information can be displayed so as not to disturb comfortable driving.

It is a figure for demonstrating the display of the information by the head-up display apparatus which concerns on embodiment of this invention. It is a figure for demonstrating the display position on the windshield of the image displayed by the head-up display apparatus which concerns on embodiment. It is a lineblock diagram of the head up display device concerning an embodiment. It is a block diagram of the control part shown in FIG. It is a figure for demonstrating the classification | category of the content to display, priority, and a display distance. It is a flowchart of the image projection process of the head-up display apparatus which concerns on embodiment. It is a figure for demonstrating operation | movement of the head-up display apparatus which concerns on embodiment. It is a figure for demonstrating operation | movement of the head-up display apparatus which concerns on embodiment. It is a figure for demonstrating operation | movement of the head-up display apparatus which concerns on embodiment.

  Embodiments of a head-up display device and a display method according to the present invention will be described with reference to the drawings.

  The head-up display device 100 according to the present embodiment is installed in a dashboard of a vehicle and, as shown in FIG. 1, displays a display target image (display target image) toward the windshield 200 (display unit). Irradiate light. The display light is reflected by the windshield 200 toward the viewer. The viewer (driver) receives the display light reflected by the windshield 200 and can visually recognize the virtual image V superimposed on the background seen through the windshield 200.

  As illustrated in FIG. 2, for example, the virtual image V is formed so as to be seen together in one place of the windshield 200, in the image display region 220 in the lower right in FIG. 2. The head-up display device 100 uses, for example, an image (content) representing information information including warning information, map information such as a destination direction, vehicle information such as speed information, environmental information such as temperature, and other information as a virtual image V. indicate.

(Configuration of Head-Up Display Device 100)
The configuration of the head-up display device 100 will be described with reference to FIG.
As illustrated, the head-up display device 100 includes a display unit 110, an optical system 120, a virtual image position adjustment unit 130, a viewpoint position detection unit 140, and a control unit 150.

  The display unit 110 receives image information to be irradiated via the control unit 150 and emits display light representing a predetermined image. The display unit 110 includes a backlight that emits light, a DMD (Digital Micromirror Device) element that generates display light representing a predetermined image based on the light from the backlight, and an irradiation that expands the display light generated by the DMD element. A lens and a screen for irradiating display light from the irradiation lens are provided. Note that a transmissive liquid crystal display element may be used instead of the DMD element, the screen, or the like.

  The optical system 120 enlarges and projects the display light irradiated by the display unit 110. Specifically, the display light is guided to the windshield 200. The optical system 120 includes a folding mirror 121 and a concave mirror 122, as shown in FIG. The folding mirror 121 is composed of a plane reflecting mirror. The folding mirror 121 reflects the display light received from the display unit 110 toward the concave mirror 122. The concave mirror 122 reflects the light toward the windshield 200 that functions as a display unit while expanding the display light.

  The virtual image position adjustment unit 130 adjusts the display position of the virtual image V that controls at least one of the display unit 110 and the optical system 120 based on an instruction from the control unit 150. In the present embodiment, the distance to the imaging position of the virtual image V is adjusted by changing the distance between the display unit 110 and the optical system 120. Specifically, the virtual image position adjustment unit 130 includes a pulse motor, a gear, and the like (not shown), and moves the display unit 110 in a direction along the display light emitted from the display unit 110.

  As the display unit 110 (exactly the screen) approaches the optical system 120 (exactly the folding mirror 121) by the virtual image position adjusting unit 130, the display position of the virtual image approaches the viewer. That is, the virtual image V is formed near the viewer. In this case, the viewer can match the display position of the virtual image V and the viewpoint position by reducing the viewpoint position (the position where the viewer's line of sight is focused) where his / her line of sight is poured. When the virtual image V is formed near the viewer and the viewer's viewpoint position is at a long distance, the viewer's viewpoint position does not match the display position (imaging position) of the virtual image V. Therefore, since the viewer only recognizes the virtual image V blurringly, it does not hinder comfortable driving.

  On the other hand, the display position of the virtual image approaches the viewer as the display unit 110 (exactly its screen) moves away from the optical system 120 by the virtual image position adjustment unit 130. That is, the virtual image V is formed far from the viewer. In this case, the viewer can match the display position of the virtual image V and the viewpoint position by moving away the viewpoint position (focus position) at which his / her line of sight is poured. When the virtual image V is formed at a distance from the viewer and the viewer's viewpoint position is at a short distance, it does not match the display position of the virtual image V of the viewer. Therefore, since the viewer only recognizes the virtual image V blurringly, it does not hinder comfortable driving.

  The viewpoint position detection unit 140 detects the position of the viewpoint (gaze point) at which the viewer's gaze is poured. The viewpoint position detection unit 140 includes a stereo camera (not shown). The stereo camera captures a face image of the viewer. Then, the viewpoint position detection unit 140 obtains the viewpoint position in the three-dimensional space by using a known image analysis technique to obtain the face direction of the viewer, the position of the pupil in each eye, and the like. That is, the viewpoint position detection unit 140 obtains the distance L1 to the viewpoint and the direction of the viewpoint (line of sight) based on the position of the viewer.

  The control unit 150 physically includes a CPU (Central Processing Unit), a RAM (Random Access Memory) serving as a work area of the CPU, a ROM (Read Only Memory) storing programs and various parameters, and the like.

  Based on the viewer's viewpoint position detected by the viewpoint position detection unit 140, the control unit 150 changes the display position (depth in the present embodiment) of the virtual image V in accordance with the content to be displayed. To control.

  As illustrated in FIG. 4, the control unit 150 includes an acquisition unit 151, a display position determination unit 152, a drive unit 153, and a determination unit 154 as functions.

  The acquisition unit 151 acquires image information of content irradiated from an in-vehicle device (not shown). The in-vehicle device is an ECU (Electronic Control Unit), a navigation system, a video device or the like mounted on the vehicle. The head-up display device 100 is connected to these in-vehicle devices via an in-vehicle LAN (Local Area Network), and acquires image information (warning information, vehicle speed information, navigation information, temperature information, etc.) of content to be displayed as a virtual image. The acquisition unit 151 supplies the acquired image information to the display unit 110 and the display position determination unit 152.

  As shown in FIG. 5, the contents are classified in advance for each priority. The content classification includes warning information, information information, and navigation information. The warning information is set to the high priority content with the highest priority and the first priority, the information information is set to the low priority content with the lowest priority and the third priority, and the navigation information is set to the second priority. Set to medium priority content. The warning information is information indicating warnings to the passengers such as an ABS (Antilock Brake System) warning, a seat belt non-wearing warning, and a remaining fuel warning (Low Fuel Warning). The navigation information is information that guides driving to the driver, such as a map and a direction display of the destination. Information information includes speed display, remaining fuel display, temperature display, and the like. A distance L1 (hereinafter, a display distance L1) from the windshield 200 to the imaging position of the virtual image V is defined for each content classification. In a normal vehicle, the position of the windshield 200 and the position of the driver's eye e may be regarded as substantially coincident. Information for classifying content as shown in FIG. 5 is stored in the ROM of the control unit 150 in advance.

  The control unit 150 controls the virtual image position adjustment unit 130 to change the display position of the virtual image with respect to the viewpoint position detected by the viewpoint position detection unit 140 for each content classification shown in FIG.

  The display position determination unit 152 determines the display position of the virtual image V for the content (image). There are two parameters for the display position, the display distance L1 from the windshield 200 to the display position of the virtual image V and the position on the windshield 200. Here, the case where the display distance L1 is determined will be described.

  Specifically, the display position determination unit 152 determines from the metadata or the like whether the image information acquired via the acquisition unit 151 belongs to the content classification shown in FIG. The distance L1 is obtained, and the display position of the virtual image is determined based on the display distance L1.

  For example, when the image information belongs to the warning information classification, the display position determination unit 152 matches the display position of the virtual image with the distance to the viewer's viewpoint position detected by the viewpoint position detection unit 140. In addition, when the image information belongs to the navigation information classification, the display position determination unit 152 sets the display position of the virtual image to a predetermined position separated by a preset distance. The display position determination unit 152 sets the display position of the virtual image V to a position different from the viewpoint position of the viewer when the image information belongs to the information information classification. For example, it is assumed that the viewpoint position of the viewer is about 100 m ahead when traveling at a speed of 100 km / h. In this case, the display position determination unit 152 sets the display position of the virtual image V representing the information information at a short distance (for example, about 20 m) so as not to hinder the comfortable driving of the viewer. It is assumed that the viewpoint position of the viewer is about 20 m ahead when traveling at a speed of 20 km / h. In this case, the display position determination unit 152 sets the display position of the virtual image V representing the information information at a long distance (for example, about 100 m) so as not to hinder the comfortable driving of the viewer.

  The drive unit 153 is, for example, a motor drive circuit, and drives the virtual image position adjustment unit 130 so that the virtual image V is displayed at the display distance L1 determined by the display position determination unit 152.

  Whether the viewer's viewpoint position (more precisely, the distance to the viewpoint position) and the display position of the virtual image V (more precisely, the distance to the imaging position of the virtual image V) match each other. Judge whether or not. Specifically, the determination unit 154 compares the display position of the virtual image V acquired from the display position determination unit 152 with the viewer's viewpoint position acquired from the viewpoint position detection unit 140, and whether these positions match. Judge whether or not. The coincidence does not mean complete coincidence, for example, coincidence considering a tolerance of about ± 1 m. Then, the determination unit 154 notifies the display position determination unit 152 of the determination result. The tolerance may be set larger as the distance increases.

(Function)
Next, the operation of the head-up display device 100 having the above configuration will be described with reference to the flowchart shown in FIG. The head-up display device 100 is supplied with power in conjunction with turning on the power of the automobile. When the head-up display device 100 is turned on, the head-up display device 100 operates based on software stored in the storage unit and irradiates content to the windshield 200 as shown in FIG. To start.

  When power is turned on to the in-vehicle device and the head-up display device 100 mounted on the automobile, the acquisition unit 151 acquires image information of content to be displayed as a virtual image V from the in-vehicle device (step S10). The acquisition unit 151 supplies image information to the display position determination unit 152. The display position determination unit 152 determines the display position of the virtual image based on the priority order shown in FIG. 5 (step S11). Specifically, the display position determination unit 152 detects the classification of the highest priority content from the information for classifying the content such as meta information included in the image information, and based on the rule shown in FIG. The display position corresponding to the classification, more precisely, the distance L1 to the imaging position is determined. At this stage, the most recent value is used as the distance to the viewpoint position of the viewer used for determining the distance. If there is no recent value, use the default value.

  The display position determination unit 152 drives the virtual image position adjustment unit 130 via the drive unit 153 so that the virtual image is displayed at the determined display position. The virtual image position adjustment unit 130 adjusts the distance between the folding mirror 121 in the optical system 120 and the display unit 110 so that the designated display distance L1 is obtained. The display unit 110 irradiates the windshield 200 with display light via the optical system 120. The virtual image V representing the content is formed at a display distance L1 corresponding to the distance between the folding mirror 121 in the optical system 120 and the display unit 110.

  Next, the viewpoint position detection unit 140 detects the viewpoint position of the viewer and supplies the detection result to the display position determination unit 152 and the determination unit 154 (step S12). Note that if it takes a certain amount of time to detect the viewpoint position, rather than stopping other processes until the detection of the viewpoint position is completed, the process returns to step S10 and the viewpoint position is detected multiple times. May be requested.

  When the viewpoint position is detected in step S12, the determination unit 154 determines whether or not the viewpoint position of the viewer matches the displayed virtual image V (step S13). When the viewpoint position coincides with the imaging position of the virtual image V, the time is stored as the coincidence time. On the other hand, if the viewpoint position does not coincide with the image formation position of the virtual image V, the difference between the latest coincidence time stored and the current time is obtained.

  When the viewer's viewpoint position does not match the displayed virtual image V for a predetermined time (for example, 5 seconds) or longer, the determination unit 154 determines that the viewer's viewpoint position does not match. Even when the display position of the virtual image V and the visual position of the viewer are at the same distance from the viewer, the determination unit 154 determines that the visual line angle of the viewer is different from the virtual image display position on the windshield 200 (that is, Also, when the position of the virtual image V on the virtual screen at the position of the distance L1 from the viewer and the viewpoint position are deviated by a tolerance or more), it is determined that the viewpoint position does not match. In other words, the determination unit 154 matches the viewing direction of the viewer with the direction in which the virtual image V is displayed, and the display position of the virtual image V and the viewing position of the viewer are at the same distance from the viewer. , Judge that the viewpoint position is correct.

  When the viewpoint position is correct (step S13: Yes), the display position determination unit 152 does not change the display position of the virtual image (step S14). On the other hand, when the viewpoint positions do not match (step S13: No), the display position determination unit 152 determines whether the image information belongs to the warning information classification (step S15). When the image information belongs to the warning information classification (step S15: Yes), the display position determination unit 152 adjusts the position of the display unit 110 via the virtual image position adjustment unit 130, thereby determining the display position of the virtual image by the viewer. The viewpoint position is changed (step S16). However, in the present embodiment, only the distance L1 to the display position of the virtual image V is changed, and the direction in which the virtual image V is displayed is not changed.

  For example, as shown in FIG. 7, when the viewer's viewpoint position is at a distance (for example, 100 m) from the viewer, the display position determination unit 152 sets the display position of the virtual image indicating the warning information at a distance from the viewer. (100m) Set first. When the viewer's viewpoint position is at a medium distance (for example, 30 m) from the viewer, the display position determination unit 152 sets the display position of the virtual image indicating the warning information to the medium distance (30 m) ahead of the viewer. .

  When the image information does not belong to the warning information classification (step S15: No), the display position determination unit 152 determines whether the image information belongs to the navigation information classification (step S17). When the image information belongs to the navigation information classification (step S17: Yes), the display position determination unit 152 sets the display position of the virtual image to a preset intermediate position (step S18). The intermediate position is set based on, for example, the viewpoint position (for example, about 30 m ahead) of the viewer when traveling at a low speed of 30 km / h. Since the navigation information is frequently used during traveling, the display position of the navigation information is set at an intermediate position so that the viewer can easily adjust the viewpoint without depending on the driving speed. When the content with the highest priority among the displayed contents is navigation information, as shown in FIG. 8, even when the viewer's viewpoint position is far away (for example, 100 m), the display position determining unit 152 sets the display position of the virtual image to an intermediate position.

  On the other hand, when the image information does not belong to the navigation information classification (step S17: No), the display position determination unit 152 shifts the virtual image display position from the viewer's viewpoint position, assuming that the image information belongs to the information information classification. (Step S19). For example, when traveling at a high speed, the viewer's viewpoint position is at a long distance, so the display position determination unit 152 sets the virtual image display position at a short distance (for example, 10 m). In the case of traveling at a low speed, as shown in FIG. 9, since the viewer's viewpoint position is at a short distance, the display position determination unit 152 sets the distance L1 to the image to a long distance (for example, 100 m). To do. That is, by making the display position of the virtual image V different from the viewpoint position of the viewer, the virtual image V is prevented from hindering comfortable driving.

  The control unit 150 repeats the above process every time new image information is acquired from the in-vehicle device.

  As described above, the head-up display device 100 according to the first embodiment includes the virtual image position adjustment unit 130 that adjusts the display position of the virtual image V by changing the distance between the display unit 110 and the optical system 120, and A viewpoint position detection unit 140 that detects a viewpoint position (gazing point) at which the line of sight of the viewer is poured. Then, the control unit 150 controls the virtual image position adjustment unit 130 so as to change the display position of the virtual image based on the viewpoint position detected by the viewpoint position detection unit 140. The head-up display device 100 can display a virtual image so as not to hinder the comfortable driving of the viewer by removing the display position of the information (content) estimated to be unnecessary from the viewer's viewpoint position. it can. Further, the head-up display device 100 can reliably convey necessary information to the viewer by matching the display position of the information (content) estimated to be necessary with the viewer's viewpoint position.

  In addition, the control unit 150 controls the virtual image position adjustment unit 130 to change the display position of the virtual image V according to the priority order of the content to be displayed. Accordingly, the head-up display device 100 can display the virtual image V at a position that does not hinder comfortable driving according to the priority of the content to be displayed. Further, the head-up display device 100 can display high-priority content so that it can be easily recognized according to the viewer's viewpoint position.

  In the above description, the image forming position of the virtual image V is adjusted by adjusting the distance between the display unit 110 and the folding mirror 121 in the optical system 120. However, how to adjust the image forming position is described above. It is not necessary to limit to this. For example, the position of the irradiation lens in the display unit 110 may be controlled. Moreover, you may adjust so that the focal distance of an irradiation lens may be changed.

  Further, the method of shifting the display position of the virtual image is a method of continuously changing according to the viewpoint position of the viewer, and a long distance (for example, 100 m), a medium distance (for example, 30 m), and a short distance (for example, 10 m). There is a method of changing in stages like When changing in stages, a table that associates the distance between the display unit 110 and the folding mirror 121 in the optical system 120 and the display position of the virtual image is stored in a storage unit (not shown). Then, the display position determination unit 152 may set the display position of the virtual image by changing the distance between the display unit 110 and the folding mirror 121 in the optical system 120 while referring to the table.

  In the above description, the predetermined time for the determination unit 154 to determine that the viewer's focus is not in the virtual image V is about 5 seconds, but the predetermined time is arbitrary. Further, the predetermined time may be changed according to the priority order of the displayed content.

  In the above description, the folding mirror 121 used in the optical system 120 is a plane mirror, but may be a concave mirror.

(Modification 1)
In the above embodiment, the distance L1 to the image formation position of the virtual image V is adjusted, but the direction of the display position viewed from the viewer of the virtual image V may be changed. For example, the direction of the virtual image V can be changed by adjusting the directivity direction of the concave mirror 122. In this case, for example, by controlling the position of the display unit 110 and the directing direction of the concave mirror 122 in step S18, the display position of the virtual image V is equal to the distance L1 to the viewer's viewpoint and equal to the direction of the line of sight. You may make it display the virtual image V in the position of direction. On the other hand, in step S19, for example, one or both of the distance L1 to the virtual image V and the orientation of the virtual image V may be shifted from the viewpoint distance and orientation.

  Further, only the direction viewed from the viewer of the imaging position of the virtual image V may be changed without changing the distance L1 to the imaging position of the virtual image V. In this case, the position of the display unit 110 may be fixed, and the directivity direction of the concave mirror 122 may be adjustable.

(Modification 2)
In the above embodiment, when the image information belongs to the classification of information information, the control unit 150 is configured to shift the display position of the virtual image from the viewpoint position of the viewer (step S19). In the process of step S19, the control unit 150 determines whether to shift the display position of the virtual image toward the viewer or away from the viewer depending on the traveling state of the vehicle. May be. For example, the head-up display device 100 assumes that the viewpoint position of the viewer is located at a long distance when the road running on the basis of the car navigation information or the image of the camera that captures the front of the vehicle is an expressway. Therefore, the display position of the virtual image is shifted in the direction approaching the viewer with respect to the viewer's viewpoint position. On the other hand, when the road running based on the car navigation information or the image of the camera that captures the front of the vehicle is congested, the viewer's viewpoint position is assumed to be located at a short distance. The virtual image display position is shifted in the direction away from the viewer with respect to the viewpoint position. Thereby, a virtual image can be displayed so that a viewer's comfortable driving | operation may not be prevented.

(Modification 3)
In the above description, the viewpoint position of the viewer is detected using the stereo camera included in the viewpoint position detection unit 140. However, the method for obtaining the viewpoint position of the viewer need not be limited to this. The viewpoint of the viewer (driver) changes according to the vehicle speed. Therefore, the display position determination unit 152 may obtain the viewer's viewpoint position from the vehicle speed.

  The relationship between the vehicle speed and the viewpoint position of the viewer can be derived from a lot of experimental data. In addition, a viewpoint position proportional to the vehicle speed can be set simply. For example, the display position determination unit 152 sets the viewpoint position when traveling at 100 km / h to 100 m, the viewpoint position when traveling at 50 km / h, 50 m, and the viewpoint position when traveling at 10 km / h, such as 10 m. Set. Specifically, a table or function that associates the vehicle speed with the viewpoint position is stored in the storage unit. Then, the display position determination unit 152 may refer to the table or obtain the viewpoint position based on a function.

  Thus, by obtaining the viewer's viewpoint position from the vehicle speed, it is not necessary to provide a stereo camera, and the manufacturing cost can be reduced. Also, software processing for measuring the viewer's viewpoint position from an image taken with a stereo camera by image analysis is heavy. By obtaining the viewpoint position from the vehicle speed, the software processing can be reduced and the processing speed can be increased.

(Modification 4)
For example, when the road running from the car navigation information is an expressway, it is estimated that the running speed is about 100 km / h, and the display position determining unit 152 sets the display distance to 100 m. Further, when the road being traveled is a general road, the travel speed is estimated to be 50 km / h if the road is a 6-lane road, and the display position determination unit 152 sets the display distance to 50 m. If the road is a two-lane road, the traveling speed is estimated to be 30 km / h, and the display position determining unit 152 sets the display distance to 30 m.

  Thus, by obtaining the viewer's focal position from the vehicle speed, it is not necessary to provide a stereo camera, and the manufacturing cost can be reduced. Further, by obtaining the viewpoint position from the vehicle speed, the software processing can be reduced and the processing speed can be increased.

  Further, other detection methods such as detecting the viewpoint position by detecting an image on the retina may be used.

(Modification 5)
As another method for estimating the focal position of the viewer (driver), the viewpoint position can also be estimated from the image of the in-vehicle camera that captures the front of the vehicle. Specifically, the traveling speed is estimated by judging the road condition from the camera image. For example, the traveling speed is estimated from the road width, the inter-vehicle distance from the vehicle ahead, and the like. It can also be estimated from the camera image that there is a traffic jam. Then, the display position determination unit 152 sets a display position according to the estimated traveling speed.

  Note that the configurations and operations described in the above embodiments and modifications are examples, and are not limited to those disclosed.

  For example, what information is to be displayed and what kind of information is given higher priority is arbitrary.

  In the above embodiment, in order to enable high-speed operation, the method of adjusting the display position in steps S13 to S19 after displaying the information in step S11 is employed. However, the step of displaying the information in step S11 Thus, it may be displayed at the optimum position at that time.

  Although the windshield 200 has been exemplified as the display unit, it may be anything, such as a combiner, as long as the irradiation light can be reflected toward the viewer.

DESCRIPTION OF SYMBOLS 100 ... Head-up display apparatus 110 ... Display unit 120 ... Optical system 121 ... Folding mirror 122 ... Concave mirror 130 ... Virtual image position adjustment part 140 ... Viewpoint position detection part 150 ... Control part 151 ... Acquisition part 152 ... Display position determination part 153 ... Drive Part 154 ... Judgment part 200 ... Windshield (display part)
220 ... Image display area 230 ... Visibility area of the viewer e ... Eye of the viewer V ... Virtual image

Claims (7)

A display unit that emits display light;
An optical system that allows a viewer to visually recognize a virtual image by guiding the display light from the display unit to a display unit;
A virtual image position adjusting unit that adjusts a display position of the virtual image by controlling at least one of the display unit and the optical system;
A viewpoint position detection unit that detects a viewpoint position at which the line of sight of the viewer is poured;
A control unit that controls the virtual image position adjustment unit to change the display position of the virtual image based on the viewpoint position detected by the viewpoint position detection unit;
A head-up display device comprising: The controller is
A determination unit that determines whether the viewpoint position of the viewer detected by the viewpoint position detection unit matches the display position of the virtual image;
When the determination unit detects that the viewer's viewpoint position does not coincide with the display position of the virtual image, the virtual image position is set so that the display position of the virtual image is shifted from the viewpoint of the viewer. Control the adjuster,
The head-up display device according to claim 1. When the determination unit detects that the viewpoint position of the viewer does not match the display position of the virtual image,
The control unit controls the virtual image position adjustment unit so that the viewer's viewpoint position and the display position of the virtual image are different in the depth direction.
The head-up display device according to claim 2. The content to be displayed has a priority,
The control unit controls the virtual image position adjustment unit so that the display position of the virtual image coincides with the viewpoint position of the viewer when high priority content with a priority higher than a reference is displayed as the virtual image.
The head-up display apparatus as described in any one of Claims 1-3. The control unit controls the virtual image position adjustment unit to shift the display position of the virtual image from the viewpoint position of the viewer when displaying low priority content having a priority less than a reference as the virtual image.
The head-up display device according to claim 4. When the medium priority content having a lower priority than the high priority content and higher than the low priority content is displayed as the virtual image, the control unit displays the virtual image at a preset position. Controlling the virtual image position adjustment unit,
The head-up display device according to claim 5. Detecting the viewpoint position where the viewer's gaze is poured,
Adjust the imaging position based on the detected viewpoint position and project a virtual image of the display target image.
Display method.

Images