CN117075336A

CN117075336A - Head-up display system, vehicle, and control method of head-up display system

Info

Publication number: CN117075336A
Application number: CN202210503116.1A
Authority: CN
Inventors: 田秀梅; 李春玉; 孙学龙; 孙志伟; 孙印飞; 程思雨
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2023-11-17

Abstract

The invention discloses a head-up display system, a vehicle and a control method of the head-up display system. The head-up display system includes: an image generating unit and a first driving unit; the controller is used for sequentially sending out corresponding split image source signals and driving signals in the split image source signal sequence and the driving signal sequence; the first driving unit is connected with the controller and the image generating unit, and is used for driving the image generating unit to move to the corresponding target position according to the driving signals in sequence, and the image generating unit is used for generating a split image at each target position according to the corresponding split image source signals in sequence and emitting light carrying split image information; the reflection unit is used for sequentially projecting incident light carrying split image information onto the projection medium so as to display the corresponding split image in the split image setting area corresponding to the target area.

Description

Head-up display system, vehicle, and control method of head-up display system

Technical Field

The invention relates to the technical field of vehicles, in particular to a head-up display system, a vehicle and a control method of the head-up display system.

Background

The HUD (Head-up Display) displays conventional vehicle information on a windshield by using an optical reflection principle, for example, basic driving information such as a vehicle speed, a speed limit and the like can be displayed, so that a driver does not need to frequently look down at driving parameters, the driver can observe a road surface more attentively, and active driving safety is realized.

The HUD is composed of a PGU (Picture Generating Unit, image generating unit), a plane mirror, and a free-form surface mirror group. The imaging process of the HUD is as follows: after the PGU generates an image, the image is reflected to the windshield through the plane reflecting mirror and the free-form surface mirror, and a virtual image with a suspended front view is observed through the windshield in the eye box position area, so that driving information is seen, a driver can acquire the information without frequently looking at an instrument and a central control screen, and driving safety is improved.

In order to display richer contents, the HUD needs to obtain a larger output screen, and in this related art, a scheme of designing a plurality of PGUs or selecting a PGU with a large size is generally adopted to implement the HUD. However, PGUs mainly include TFT thin film transistor technology and DLP digital light processing technology, and the use of multiple PGUs directly results in increased cost and volume; for the large-size TFT scheme, the heat dissipation module occupies a larger space because the temperature of the backlight is fast to rise; for large-size DLP schemes, the volume is also increased due to the complex internal optical path structure. Therefore, the HUD packaging volume is huge, and the application of the HUD on compact vehicle types is limited. In addition, the large-size free-form surface mirror has high processing difficulty, low yield and high cost.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a head-up display system, which can effectively alleviate the urgent need for a large-sized PGU and reduce the manufacturing cost.

Another object of the present invention is to provide a vehicle.

The third objective of the present invention is to provide a control method of a head-up display system.

In order to solve the above problems, an embodiment of a first aspect of the present invention provides a head-up display system, including: an image generating unit and a first driving unit; the controller is used for acquiring vehicle running information and position setting information of the image generation unit, forming the vehicle running information into an image splitting source signal sequence according to split image setting information of a target display image, generating a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially sending out corresponding split image source signals and driving signals in the image splitting source signal sequence and the driving signal sequence; the first driving unit is connected with the controller and the image generating unit, and is used for sequentially receiving driving signals in the driving signal sequence, driving the image generating unit to move to corresponding target positions according to the driving signals, generating an image splitting image at each target position according to corresponding image splitting image source signals, and emitting light carrying image splitting information; and the reflection unit is used for sequentially projecting the incident light carrying the split image information onto a projection medium so as to display the corresponding split image in the split image setting area corresponding to the target area, wherein each split image is spliced into the target display image.

According to the head-up display system provided by the embodiment of the invention, the first driving unit is arranged, the first driving unit changes the target position of the image generating unit according to the driving signal, so that the image generating unit can form corresponding light rays carrying split image information at different target positions according to split image source signals, then the reflecting unit reflects the light rays carrying different split image information onto the projection medium, so that different split image images are displayed in different split image setting areas of the projection medium, and each split image displayed on the projection medium is spliced into a target display image by utilizing the principle of eye vision retention, so that richer picture content is displayed, the effect that the miniaturized image generating unit completes large-size image output is realized, the urgent requirement on a large-size PGU is effectively relieved, the whole packaging volume is reduced, the arrangement space is saved, and the manufacturing cost is reduced.

In some embodiments, the reflection unit includes: the primary reflection subunit is arranged on an emergent light path of the image generation unit for emitting light carrying split image information and is used for reflecting the light carrying the split image information; the secondary reflection subunit is arranged on the reflection light path of the primary reflection subunit and is used for reflecting the light rays reflected by the primary reflection subunit again to the projection medium.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the primary reflecting subunit is provided with N first reflecting areas which are arranged along a first direction; the secondary reflection subunit has N second reflection regions arranged along the first direction; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to an nth second reflection area of the secondary reflection subunit, and the nth second reflection area of the secondary reflection subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the secondary reflection subunit has N second reflection regions arranged along the first direction; the head-up display system further comprises a second driving unit, wherein the second driving unit is used for driving the primary reflecting subunit to sequentially translate to N first reflecting positions along a first direction according to the driving signal sequence; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflecting subunit which is translated to an nth first reflecting position, the reflected light of the first-stage reflecting subunit is incident to an nth second reflecting area of the second-stage reflecting subunit, and the nth second reflecting area of the second-stage reflecting subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the primary reflecting subunit has N first reflecting regions arranged along the first direction; the head-up display system further comprises a third driving unit, wherein the third driving unit is used for driving the secondary reflection subunit to sequentially translate to N second reflection positions along a first direction according to the driving signal sequence; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to the secondary reflection subunit which translates to an nth second reflection position, and the secondary reflection subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the primary reflecting subunit is provided with N first reflecting areas which are arranged along a first direction; the secondary reflection subunit comprises N micro free-form surface mirrors arranged along the first direction; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying the nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the head-up display system further includes: the second driving unit is used for driving the primary reflecting subunit to sequentially translate to N first reflecting positions along a first direction according to the driving signal sequence; the third driving unit is used for driving the secondary reflecting subunit to sequentially translate to N second reflecting positions along the first direction according to the driving signal sequence; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflecting subunit which translates to an nth first reflecting position, the reflected light of the first-stage reflecting subunit is incident to the second-stage reflecting subunit which translates to an nth second reflecting position, and the second-stage reflecting subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the split image source signal sequence includes N split image source signals, the drive signal sequence includes N drive signals, where N is an integer greater than 1; the head-up display system further comprises a second driving unit, wherein the second driving unit is used for driving the primary reflecting subunit to sequentially translate to N first reflecting positions along a first direction according to the driving signal sequence; the secondary reflection subunit comprises N micro free-form surface mirrors arranged along the first direction; the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals; the image generation unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflection subunit which translates to an nth first reflection position, the reflected light of the first-stage reflection subunit is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying the nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

In some embodiments, the length of the primary reflecting subunit along the first direction satisfies l1=n×l2, where L1 is the length of the primary reflecting subunit along the first direction and L2 is the translation distance of the image generating unit once.

In some embodiments, the preset rotation angle satisfies:

wherein θ is the preset rotation angle, L ₁ H is the distance between the image generation unit and the primary reflection subunit, L is the length of the primary reflection subunit ₀ Is the distance between the image generation unit and the perpendicular bisector of the primary reflection subunit.

An embodiment of a second aspect of the present invention provides a vehicle, where the vehicle includes the head-up display system described in the above embodiment.

According to the vehicle provided by the embodiment of the invention, by adopting the head-up display system provided by the embodiment of the invention, the effect that the miniaturized image generating unit completes the image output of a large size can be realized, the urgent requirement on the PGU of the large size is effectively relieved, and the manufacturing cost is reduced.

In some embodiments, the projection medium of the heads-up display system is disposed at a front windshield of the vehicle.

An embodiment of a third aspect of the present invention provides a method for controlling a head-up display system, including: acquiring vehicle running information and position setting information of an image generating unit of the head-up display system; forming an image splitting source signal sequence from the vehicle driving information according to the image splitting setting information of the target display image, generating a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially sending out corresponding image splitting source signals and driving signals in the image splitting source signal sequence and the driving signal sequence; and driving the image generating unit to move to a corresponding target position according to driving signals in the driving signal sequence in sequence, controlling the image generating unit to generate split image images at each target position according to corresponding split image source signals in sequence, and emitting light carrying split image information so as to sequentially project the light carrying the split image information onto a projection medium, so that corresponding split image images are displayed in split image setting areas corresponding to target areas, wherein each split image is spliced into the target display image.

According to the control method of the head-up display system, the image generating unit is controlled to form corresponding light rays carrying split image information at different target positions according to the split image source signal sequences according to the driving signal sequences, and then the light rays carrying different split image information are reflected to the projection medium to display different split image images in different split image setting areas of the projection medium, so that the principle of eye vision retention is utilized, all the split image images displayed on the projection medium are spliced into target display images, richer picture content is displayed, the effect of achieving that the miniaturized image generating unit achieves the effect of outputting large-size images is achieved, the urgent requirement on the large-size PGU is effectively relieved, the whole packaging volume is reduced, the arrangement space is saved, and the manufacturing cost is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a head-up display system according to one embodiment of the invention;

FIG. 2 is a control schematic of a heads-up display system forming a target display image according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a controller refreshing split image source signals in a sequence of split image source signals according to one embodiment of the invention;

FIG. 4 is a schematic diagram of a head-up display system for generating a target display image by a translatable image generation unit according to one embodiment of the invention;

FIG. 5 is a control schematic of a heads-up display system for generating a target display image by a translatable image generation unit in accordance with one embodiment of the invention;

FIG. 6 is a schematic diagram of a head-up display system for generating a target display image by a rotatable image generation unit according to one embodiment of the present invention;

FIG. 7 is a schematic diagram of a heads-up display system for generating a target display image via a translatable image generation unit and a translatable primary reflection subunit in accordance with one embodiment of the invention;

FIG. 8 is a control schematic of a heads-up display system for generating a target display image by a translatable image generation unit and a translatable primary reflection subunit in accordance with one embodiment of the invention;

FIG. 9 is a schematic diagram of a heads-up display system for generating a target display image via a rotatable image generating unit and a translatable primary reflecting subunit in accordance with one embodiment of the invention;

FIG. 10 is a schematic diagram of a heads-up display system for generating a target display image via a translatable image generation unit and a translatable secondary reflection subunit in accordance with one embodiment of the invention;

FIG. 11 is a control schematic of a heads-up display system for generating a target display image by a translatable image generation unit and a translatable secondary reflection subunit in accordance with an embodiment of the invention;

FIG. 12 is a schematic diagram of a heads-up display system for generating a target display image via a rotatable image generating unit and a translatable secondary reflecting subunit in accordance with one embodiment of the invention;

FIG. 13 is a schematic diagram of a head-up display system for generating a target display image via a translatable image generation unit and a plurality of micro freeform mirrors according to one embodiment of the invention;

FIG. 14 is a control schematic of a heads-up display system for generating a target display image via a translatable image generation unit and a plurality of micro freeform mirrors in accordance with one embodiment of the invention;

FIG. 15 is a schematic diagram of a head-up display system for generating a target display image via a rotatable image generation unit and a plurality of micro freeform mirrors according to one embodiment of the invention;

FIG. 16 is a schematic diagram of a heads-up display system for generating a target display image by a translatable image generation unit and a translatable primary reflective subunit, a translatable secondary reflective subunit, according to one embodiment of the invention;

FIG. 17 is a control schematic of a heads-up display system for generating a target display image by a translatable image generation unit and a translatable primary reflective subunit, a translatable secondary reflective subunit, according to one embodiment of the invention;

FIG. 18 is a schematic diagram of a heads-up display system for generating a target display image by a rotatable image generation unit and translatable primary and secondary reflective subunits, according to one embodiment of the invention;

FIG. 19 is a schematic diagram of a heads-up display system for generating a target display image via a translatable image generation unit and a translatable primary reflection subunit, a plurality of micro freeform mirrors, in accordance with one embodiment of the invention;

FIG. 20 is a control schematic of a heads-up display system for generating a target display image via a translatable image generation unit and a translatable primary reflection subunit, a plurality of micro freeform mirrors, in accordance with one embodiment of the invention;

FIG. 21 is a schematic diagram of a heads-up display system for generating a target display image via a rotatable image generation unit and a translatable primary reflection subunit, a plurality of micro freeform mirrors, in accordance with one embodiment of the present invention;

FIG. 22 is a detailed schematic of driving the image generation unit to translate in a first direction according to one embodiment of the invention;

fig. 23 is a specific schematic diagram of driving the image generation unit to rotate according to an embodiment of the present invention;

fig. 24 is a detailed schematic diagram of driving the image generating unit to rotate according to another embodiment of the present invention;

FIG. 25 is a schematic structural view of a vehicle according to an embodiment of the invention;

fig. 26 is a flowchart of a control method of a head-up display system according to an embodiment of the present invention.

Reference numerals:

a vehicle 100; head-up display system 20;

an image generation unit 11; a first driving unit 12; a controller 13; a reflection unit 14; a first-order reflection subunit 141; a secondary reflection subunit 142; a second driving unit 15; a third driving unit 16; a projection medium 9; eye box 110.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

The HUD displays conventional vehicle information on a windshield by utilizing an optical reflection principle, so that a driver does not need to frequently look down at driving parameters, and can pay more attention to observe the road surface, thereby realizing active driving safety.

The HUD can only display basic driving information such as vehicle speed, speed limit and the like in the early development stage, and along with the rapid development of an automatic driving technology, a driving auxiliary function gets on a vehicle rapidly, so that the application market of the HUD in the automobile industry is opened, information such as navigation guidance, road identification, intervention and exit of the driving auxiliary function and the like is displayed in front of the visual field of a driver, the process of frequently transferring the visual field of the driver to an instrument, a central control screen and the like is omitted, and the driving safety is greatly improved. Meanwhile, as new interactive display interfaces, entertainment information such as videos and games, information which is fused with surrounding environments and is enhanced to be displayed, and service information based on LBS (Location Based Services, mobile location service) positions are all coming out. Driven by technical progress and user experience upgrade, the HUD is required to output larger images to bear more information for timely display.

In the related art, in order to display richer picture contents, a plurality of PGUs are usually designed in the HUD or a scheme of selecting a PGU with a large size is adopted for implementation, however, the above-mentioned method has a dilemma that the HUD with a large packaging volume is difficult to get on a vehicle under the condition of limited arrangement space.

In order to solve the above-mentioned problems, an embodiment of the first aspect of the present invention provides a head-up display system, which can effectively alleviate urgent requirements for a large PGU and reduce manufacturing costs.

The head-up display system provided by the present invention is described below with reference to fig. 1, and as shown in fig. 1, the head-up display system 20 includes an image generating unit 11, a first driving unit 12, a controller 13, and a reflecting unit 14.

The controller 13 is configured to obtain vehicle driving information and position setting information of the image generating unit, form the vehicle driving information into an image splitting source signal sequence according to the image splitting setting information of the target display image, generate a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially send out corresponding image splitting source signals and driving signals in the image splitting source signal sequence and the driving signal sequence.

The vehicle driving information may be understood as driving information of the vehicle during driving, and may include, for example, road information on which the vehicle is driving, vehicle speed information during driving of the vehicle, a navigation path of a driving destination of the vehicle, steering, and position information of the vehicle on a road, and the like. The position setting information can be understood as parameter information of the position where the image generating unit 11 is located. The split image setting information of the target display image at least includes the display content of the target display image and the distribution position of the display content corresponding to the split image.

The first driving unit 12 is connected to the controller 13 and the image generating unit 11, and is configured to sequentially receive the driving signals in the driving signal sequence, sequentially drive the image generating unit 11 to move to the corresponding target positions according to the driving signals, and the image generating unit 11 is configured to sequentially generate sub-image images at each target position according to the corresponding sub-image source signals, and emit light carrying the sub-image information.

The reflecting unit 14 is configured to sequentially project incident light carrying split image information onto the projection medium, so as to display corresponding split image in a split image setting area corresponding to the target area, where each split image is spliced into a target display image.

That is, under the control of the controller 13, the first driving unit 12 may sequentially drive the image generating units 11 according to the driving signal sequence to change the position of the image generating units 11 and change the direction of the light emitted by the image generating units 11, so that when the image generating units 11 are located at different positions, the light carrying different split image information can be emitted according to different split image source signals, and then the light carrying different split image information is reflected onto the projection medium by the reflecting unit 14, so that different split image images are displayed in different split image setting areas of the projection medium, and therefore, the principle of eye vision retention is utilized, that is, a complete image formed by splicing the split image images is displayed on the projection medium, namely, a target display image, for a user to view. By arranging the first driving unit 12 to adjust the light emission direction of the image generating unit 11, the light emitted by the image generating unit 11 can present a plurality of split images after being reflected by the reflecting unit 14, the aim of meeting a larger output picture can be fulfilled based on visual retention, and a plurality of image generating units or a large-size image generating unit is not required to be arranged, so that the miniaturized image generating unit can complete the large-size image output effect, the urgent requirement on a large-size PGU is effectively relieved, the whole packaging volume is reduced, the arrangement space is saved, and the manufacturing cost is reduced.

Specifically, referring to fig. 2, taking two split-image images as an example, the image generation process of the head-up display system 20: the controller 13 forms a split image source signal sequence and a drive signal sequence by integrating the received vehicle running information and the position setting information of the image generating unit 11, and forms a split image source signal sequence from the split image source signal 1, the split image source signal 2 …, the split image source signal n+1, and a drive signal sequence from the drive signal 1, the drive signal 2 …, and the drive signal n+1 as shown in fig. 2.

Further, the controller 13 sequentially distributes the split image source signals and the driving signals, for example, step1 in fig. 2 is that the controller 13 sends the driving signals 1 and the split image source signals 1, the first driving unit 12 drives the image generating unit 11 to move to the target position 1 corresponding to the driving signals 1 after receiving the driving signals 1, meanwhile, the image generating unit 11 receives the split image source signals 1 to generate the split image 1, and emits light carrying the information of the split image 1, and the light is reflected by the reflecting unit 14 and then displays the split image 1 at the split image setting area 1 corresponding to the target area, wherein the split image 1 can be displayed as road information and vehicle speed information of a vehicle.

After step1 is completed, the controller 13 enters step2, for example, step1 in fig. 2 sends a driving signal 2 and a split image source signal 2 to the controller 13, after receiving the driving signal 2, the first driving unit 12 drives the image generating unit 11 to move to a target position 2 corresponding to the driving signal 2, meanwhile, the image generating unit 11 receives the split image source signal 2 to generate a split image 2, and emits light carrying split image 2 information, and after the light is reflected by the reflecting unit 14, the split image 2 is displayed at a split image setting area 2 corresponding to the target area, wherein the split image 2 can be displayed as navigation path, steering and position information of a vehicle.

After step2 is completed, the controller 13 enters step, n is an odd number, for example, step in fig. 2 is that the controller 13 sends a driving signal n and a split image source signal n, the first driving unit 12 drives the image generating unit 11 to move to a target position 1 corresponding to the driving signal n after receiving the driving signal n, meanwhile, the image generating unit 11 receives the split image source signal n to generate a split image 1, and emits light carrying information of the split image 1, and the light is reflected by the reflecting unit 14 and then displays the split image 1 at the split image setting area 1 corresponding to the target area.

After the stepn is completed, the controller 13 enters into a stepn+1, for example, the stepn+1 in fig. 2 sends a driving signal n+1 and a split image source signal n+1 to the controller 13, the first driving unit 12 drives the image generating unit 11 to move to a target position 2 corresponding to the driving signal n+1 after receiving the driving signal n+1, and meanwhile, the image generating unit 11 receives the split image source signal n+1 to generate a split image 2, and emits light carrying information of the split image 2, and the light is reflected by the reflecting unit 14 and then displays the split image 2 at the split image setting area 2 corresponding to the target area.

Thus, through the back and forth control process described above, the head-up display system 20 can present the road information and the vehicle speed information to be displayed by the split image 1 when the image generating unit 11 is at the target position 1; when the image generating unit 11 is at the target position 2, the head-up display system 20 can present navigation path, steering and position information to be displayed by the split image 2, and meanwhile, when the image generating unit 11 is controlled to switch between the target position 1 and the target position 2, the switching frequency of the head-up display system 20 is greater than 2 times of the frame rate which can be resolved by human eyes, so that light rays which are emitted by the image generating unit 11 and carry different split image information are reflected by the reflecting unit 14 and projected onto a projection medium such as a windshield of a vehicle, and according to visual retention, two split image images seen by a user are actually a complete picture, namely a target display image, thereby achieving the purpose of displaying richer picture contents without arranging a plurality of image generating units or selecting a large-size image generating unit, realizing the purpose of completing large-size image output effect by the miniaturized image generating unit, effectively relieving urgent requirements on the large-size PGU, reducing the whole packaging volume, saving the arrangement space and reducing the manufacturing cost.

In the embodiment, the frame rate that the human eye can distinguish is 24 frames, based on this, the frequency that the image generating unit 11 switches at high speed between the target position 1 and the target position 2 is up to more than 48HZ, and the refresh rate that is currently applied to the vehicle is 60HZ or more, different split-image images can form respective stable images, and according to the visual stop, the multiple split-image images seen by the user are actually one complete picture, namely the target display image.

In the embodiment, for the process of distributing the split image source signals by the controller 13 according to the split image source signal sequence, as shown in fig. 3, taking two split image as an example, wherein the frame a series is represented as the split image source signal corresponding to the split image 1, the frame B series is represented as the split image source signal corresponding to the split image 2, the controller 13 sequentially sends the split image source signals 1 first, and prepares to send the split image source signals 2 corresponding to the split image 2, that is, the display card of the controller 13 transmits the frame A1 picture of the split image 1 to the display of the image generating unit 11 according to the split image source signals 1 to refresh to generate the split image 1, and meanwhile, the frame B1 of the split image 2 in the display card waits, that is, the frame B1 is in a preparation state; after the image generating unit 11 is refreshed according to the frame A1, the controller 13 sequentially resends the split image source signals 2, and prepares to send the split image source signals 3 corresponding to the split image 1 according to the split image source signal sequence, namely, the display card of the controller 13 transmits the frame B1 picture of the split image 2 to the display of the image generating unit 11 for refreshing according to the split image source signals 2 so as to generate the split image 2, and the frame A2 of the split image 1 in the display card prepares to wait; after the image generating unit 11 is refreshed according to the frame B1, the controller 13 sequentially resends the split image source signals 3 and prepares to send the split image source signals 4 of the split image 2 according to the split image source signal sequence, namely the display card of the controller 13 transmits the frame A2 to the display of the image generating unit 11 for refreshing according to the split image source signals 3 so as to generate the split image 1, and the frame B2 of the split image 2 in the display card prepares to wait; after the image generating unit 11 is refreshed according to the frame A2, the controller 13 sequentially resends the split image source signals 4, and prepares to send the split image source signals n of the split image 1 according to the split image source signal sequence, wherein n is An odd number, that is, the display card of the controller 13 transmits the frame B2 picture of the split image 2 to the display of the image generating unit 11 for refreshing according to the split image source signals 4 so as to generate the split image 2, and the frame An of the split image 1 in the display card prepares to wait; after the image generating unit 11 is refreshed according to the frame B2, the controller 13 sequentially resends the split image source signals n, and prepares to send the split image source signals n+1 of the split image 2 according to the split image source signal sequence, namely the display card of the controller 13 transmits the frame An picture to the display of the image generating unit 11 for refreshing according to the split image source signals n to generate the split image 1, and the standby state of the frame Bn of the split image 2 in the display card waits; after the image generating unit 11 is refreshed according to the frame An, the controller 13 sequentially resends the split image source signals n+1, and prepares to send the next split image source signal according to the split image source signal sequence, namely the display card of the controller 13 transmits the frame Bn picture to the display of the image generating unit 11 for refreshing according to the split image source signals n+1 so as to generate a split image 2, and the display card generates a frame an+1 preparation state of the split image 1 to wait; with this control, the image generating unit 11 can perform the next round of refresh after the refresh per frame Bn is completed. Thus, the frames A1, A2 to An form the continuous split image 1, and the frames B1, B2 to Bn form the continuous split image 2, so that the image generating unit 11 can form the dynamic split image according to the real-time change of the vehicle running information, so that the user can know the running condition of the vehicle in real time.

In some embodiments, as shown in fig. 4, the reflection unit 14 includes a primary reflection subunit 141 and a secondary reflection subunit 142.

The primary reflecting subunit 141 is disposed on the outgoing light path of the image generating unit 11 for emitting the light beam carrying the split image information, and is configured to reflect the light beam carrying the split image information. In some embodiments, the primary reflecting subunit 141 may be a planar mirror.

The secondary reflection subunit 142 is disposed on the reflection light path of the primary reflection subunit 141, and is configured to reflect the light reflected by the primary reflection subunit 141 to reflect onto the projection medium 9 again. In some embodiments, the secondary reflective subunit 142 may be a free-form mirror.

That is, for the light beam carrying the split image information emitted from the image generating unit 11 to be projected onto the projection medium 9 after being reflected twice, for example, referring to fig. 4, the projection medium 9 is a front windshield of a vehicle, in order to facilitate the display of the running information of the vehicle in front of the user's field of view, the light beam carrying the respective split image information about the running information of the vehicle is sequentially generated and emitted by controlling the image generating unit 11, the light beam of the received split image information is reflected by the primary reflecting subunit 141 to the secondary reflecting subunit 142, the light beam reflected by the primary reflecting subunit 141 is reflected again to the front windshield, and the user's eyes are in the position area of the eye box 110, so that the suspended virtual image of the front field of view, that is, the target display image, is the complete image formed by splicing the respective split image images corresponding to the different split image setting areas, can be seen.

In some embodiments, the split image source signal sequence comprises N split image source signals, and the drive signal sequence comprises N drive signals, where N is an integer greater than 1.

The primary reflecting subunit 141 has N first reflecting regions a arranged along a first direction, for example, the primary reflecting subunit 141 shown in fig. 4 has two first reflecting regions a1 and a2 arranged along the first direction; the secondary reflection subunit 142 has N second reflection regions b arranged along the first direction, for example, the secondary reflection subunit 142 shown in fig. 4 has two second reflection regions b1 and b2 arranged along the first direction.

The first driving unit 12 sequentially translates the image generating unit 11 to N target positions in the first direction according to the N driving signals, that is, the image generating unit 11 may translate in the first direction, and the first driving unit 12 changes the position of the image generating unit 11 by driving the image generating unit 11 to translate in the first direction. Alternatively, the first driving unit drives the image generating unit to sequentially rotate to N target positions according to a preset rotation angle clockwise or counterclockwise according to N driving signals, that is, the image generating unit 11 may rotate, and the first driving unit 12 changes the position of the image generating unit 11 by driving the image generating unit 11 to rotate.

The image generating unit 11 generates an nth split image at an nth target position according to the nth split image source signal, and emits light carrying the nth split image information to an nth first reflection area of the primary reflection subunit 141, the reflected light of the nth first reflection area of the primary reflection subunit 141 is incident to an nth second reflection area of the secondary reflection subunit 142, and the nth second reflection area of the secondary reflection subunit 142 projects the light carrying the nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the image generating unit 11 generating two split images as an example, for the translatable image generating unit 11, reference is made to fig. 4 and 5, where a solid line is a light refraction path carrying information of the split image 1, and a dotted line is a light refraction path carrying information of the split image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signal and the driving signal, the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 4) and the target position 2 (reference numeral 112 in fig. 4) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially emits the light ray carrying the information of the split image 1 and the light ray carrying the information of the split image 2 according to the received split image source signal, so that the light ray carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflection area a1 of the first-stage reflection subunit 141 and the second reflection area b2 of the second-stage reflection subunit 142, and the user can suspend the target display image 30 in front of the position area of the eye box 110, so that the target display image 30 is a complete image formed by the split image setting area c1 and the split image 2 of the split image setting area c2 of the split image 1, and the split image 2 of the split image setting area c is reflected by the light ray carrying the split image 2 information of the first-stage reflection subunit 141.

Taking n=2, that is, the image generating unit 11 generates two split-image images as an example, for the rotatable image generating unit 11, reference is made to fig. 6, where a solid line is a light refraction path carrying information of the split-image 1, and a dotted line is a light refraction path carrying information of the split-image 2, and the image generating process is as follows: the controller 13 sequentially transmits the split image source signal and the driving signal, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 6) and the target position 2 (reference numeral 112 in fig. 6) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially emits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 according to the received split image source signal, wherein the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflection area a1 of the first-stage reflection subunit 141 and the second reflection area b1 of the second-stage reflection subunit 142, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflection area a2 of the first-stage reflection subunit 141, and the second reflection area b2 of the second-stage reflection subunit 142, so that the user can suspend the front view of the target display image 30 in the position area of the eye box 110, and the target display image 30 is the complete view of the split image 2 formed by the split image setting area c1 and the split image 2 of the split image setting image 2 in the projection medium 9.

The secondary reflective subunit 142 has N second reflective regions arranged in a first direction, for example, the secondary reflective subunit 142 shown in fig. 7 has two second reflective regions b1 and b2 arranged in the first direction.

In some embodiments, as shown in fig. 7, the head-up display system 20 further includes a second driving unit 15, where the second driving unit 15 is configured to drive the primary reflecting subunit 141 to sequentially translate to N first reflecting positions along the first direction according to a driving signal sequence.

The first driving unit 12 drives the image generating unit 11 to sequentially translate to N target positions along the first direction according to N driving signals, that is, the present application may combine the translatable primary reflecting subunit 141 with the translatable image generating unit 11, so as to achieve the effect that the miniaturized image generating unit 11 completes the image output of a large size. Alternatively, the first driving unit 12 drives the image generating unit 11 to sequentially rotate to N target positions according to a preset rotation angle clockwise or counterclockwise according to N driving signals, that is, the present application may combine the translatable primary reflection subunit 141 with the rotatable image generating unit 11, so that the miniaturized image generating unit 11 achieves a large-sized image output effect.

The image generating unit 11 generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying the nth split image information to the first-stage reflecting subunit 141 translated to the nth first reflecting position, the reflected light of the first-stage reflecting subunit 141 is incident to an nth second reflecting area of the second-stage reflecting subunit 142, and the nth second reflecting area of the second-stage reflecting subunit 142 projects the light carrying the nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the image generating unit 11 generates two split-image images as an example, for a scheme of combining the translatable primary reflection subunit 141 with the translatable image generating unit 11, reference is made to fig. 7 and 8, where a solid line is a light refraction path carrying information of the split-image 1, and a dotted line is a light refraction path carrying information of the split-image 2, and the image generating process thereof is as follows: the controller 13 sequentially transmits the split image source signals and the driving signals, and the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 7) and the target position 2 (reference numeral 112 in fig. 7) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially and correspondingly transmits the light ray carrying the information of the split image 1 and the light ray carrying the information of the split image 2 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the first reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflecting subunit 141 and the second reflecting area b1 of the second reflecting subunit 142 at the first reflecting position d1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflecting subunit 141 and the second reflecting area b2 of the second reflecting subunit 142 at the first reflecting position d2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

Taking n=2, that is, taking the case that the image generating unit 11 generates two split-image images, for the scheme of combining the translatable primary reflecting subunit 141 with the rotatable image generating unit 11, reference is made to fig. 9, where the solid line is a light refraction path carrying the information of the split-image 1, and the dotted line is a light refraction path carrying the information of the split-image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 9) and the target position 2 (reference numeral 112 in fig. 9) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially and correspondingly transmits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the first reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflecting subunit 141 and the second reflecting area b1 of the second reflecting subunit 142 at the first reflecting position d1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflecting subunit 141 and the second reflecting area b2 of the second reflecting subunit 142 at the first reflecting position d2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

The primary reflecting subunit 141 has N first reflecting regions arranged in the first direction, for example, as shown in fig. 10, and the primary reflecting subunit 141 has two first reflecting regions a1 and a2 arranged in the first direction.

As shown in fig. 10, the head-up display system 20 further includes a third driving unit 16, where the third driving unit 16 is configured to drive the secondary reflection subunit 142 to sequentially translate to N second reflection positions along the first direction according to the driving signal sequence.

The first driving unit 12 drives the image generating unit 11 to sequentially translate to N target positions along the first direction according to N driving signals, that is, the translatable secondary reflecting subunit 142 and the translatable image generating unit 11 can be combined, so that the miniaturized image generating unit 11 can achieve the large-size image output effect. Or, the first driving unit drives the image generating unit to sequentially rotate to N target positions according to N driving signals clockwise or anticlockwise according to a preset rotation angle, that is, the translatable secondary reflecting subunit 142 and the rotatable image generating unit 11 can be combined, so that the miniaturized image generating unit 11 can achieve the large-size image output effect.

The image generating unit 11 generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying the nth split image information to an nth first reflection area of the first-stage reflection subunit 141, the reflected light of the nth first reflection area of the first-stage reflection subunit 141 is incident to a second-stage reflection subunit 142 translated to an nth second reflection position, and the second-stage reflection subunit 142 projects the light carrying the nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the image generating unit 11 generates two split-image images as an example, for a scheme of combining the translatable secondary reflection subunit 142 with the translatable image generating unit 11, reference is made to fig. 10 and 11, where a solid line is a light refraction path carrying information of the split-image 1, and a dotted line is a light refraction path carrying information of the split-image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signals and the driving signals, and the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 10) and the target position 2 (reference numeral 112 in fig. 10) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially and correspondingly transmits the light ray carrying the information of the split image 1 and the light ray carrying the information of the split image 2 according to the received split image source signals; the second-stage reflection subunit 142 is driven by the third driving unit 16 to perform translational switching at the second reflection position e1 and the second reflection position e2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflection area a1 of the first-stage reflection subunit 141 and the second-stage reflection subunit 142 at the second reflection position e1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflection area a2 of the first-stage reflection subunit 141 and the second-stage reflection subunit 142 at the second reflection position e2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

Taking n=2, that is, taking the case that the image generating unit 11 generates two split-image images, for the scheme of combining the translatable secondary reflection subunit 142 with the rotatable image generating unit 11, reference is made to fig. 12, where the solid line is a light refraction path carrying the information of the split-image 1, and the dotted line is a light refraction path carrying the information of the split-image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 12) and the target position 2 (reference numeral 112 in fig. 12) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially and correspondingly transmits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the second-stage reflection subunit 142 is driven by the third driving unit 16 to perform translational switching at the second reflection position e1 and the second reflection position e2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflection area a1 of the first-stage reflection subunit 141 and the second-stage reflection subunit 142 at the second reflection position e1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflection area a2 of the first-stage reflection subunit 141 and the second-stage reflection subunit 142 at the second reflection position e2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

As shown in fig. 13, the primary reflecting subunit 141 has N first reflecting regions arranged along the first direction, for example, the primary reflecting subunit 141 shown in fig. 13 has two first reflecting regions a1 and a2 arranged along the first direction; and the secondary reflecting subunit 142 includes N micro free-form surface mirrors arranged along the first direction, for example, the secondary reflecting subunit 142 shown in fig. 13 includes two micro free-form surface mirrors f1 and f2 arranged along the first direction.

The first driving unit 12 drives the image generating unit 11 to sequentially translate to N target positions along the first direction according to N driving signals, that is, the application can combine a plurality of small-sized secondary reflecting subunits 142 with the translatable image generating unit 11, so that the small-sized image generating unit 11 can complete the large-sized image output effect, meanwhile, the difficult problem of processing the large-sized secondary reflecting subunits is solved, and the manufacturing cost of system parts is greatly reduced. Or, the first driving unit drives the image generating unit 11 to rotate to N target positions according to N driving signals clockwise or anticlockwise according to a preset rotation angle, that is, the application can combine a plurality of small secondary reflecting subunits 142 with the rotatable image generating unit 11, so that the small image generating unit 11 can achieve the effect of outputting large-size images, meanwhile, the difficult problem of processing the large secondary reflecting subunits is solved, and the manufacturing cost of system parts is greatly reduced.

The image generating unit 11 generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying the nth split image information to an nth first reflection area of the primary reflection subunit 141, the reflected light of the nth first reflection area of the primary reflection subunit 141 is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying the nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the case that the image generating unit 11 generates two split images, for the scheme of combining the multiple small secondary reflection subunits 142 with the translatable image generating unit 11, reference is made to fig. 13 and 14, where the solid line is a light refraction path carrying the split image 1 information, the dotted line is a light refraction path carrying the split image 2 information, and the image generating process thereof: the controller 13 sequentially transmits the split image source signal and the driving signal, and the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 13) and the target position 2 (reference numeral 112 in fig. 13) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially transmits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 to the first-stage reflection subunit 141 according to the received split image source signal, so that the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the first reflection area a1 of the first-stage reflection subunit 141 and the micro free-form mirror f1 in the second-stage reflection subunit 142, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the first reflection area a2 of the first-stage reflection subunit 141, and the user can see the front view, i.e., the virtual image 30 in the position area of the eye box 110, and the image 30 is formed by the split image setting of the split image 2 of the split image 1 and the split image setting area c 2.

Taking n=2, that is, taking the case that the image generating unit 11 generates two split-image images, for the scheme of combining the multi-block small-sized secondary reflection subunit 142 with the rotatable image generating unit 11, reference is made to fig. 15, where the solid line is a light refraction path carrying the information of the split-image 1, and the dotted line is a light refraction path carrying the information of the split-image 2, and the image generating process is as follows: the controller 13 sequentially transmits the split image source signal and the driving signal, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 15) and the target position 2 (reference numeral 112 in fig. 15) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially transmits the light carrying the split image 1 information and the light carrying the split image 2 information to the first-stage reflection subunit 141 according to the received split image source signal, whereby the light carrying the split image 1 information is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 via the first reflection area a1 of the first-stage reflection subunit 141 and the micro free-form mirror f1 in the second-stage reflection subunit 142, and the light carrying the split image 2 information is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 via the first reflection area a2 of the first-stage reflection subunit 141, and the user can see the front view, i.e., the virtual image display target display image 30 in the position area of the eye box 110, and the split image 30 is formed by the split image setting area c2 of the split image 1 and the split image 2.

As shown in fig. 16, the head-up display system 20 further includes a second driving unit 15 and a third driving unit 16.

The second driving unit 15 is configured to drive the first-stage reflecting subunit 141 to sequentially translate to N first reflecting positions along the first direction according to the driving signal sequence; the third driving unit 16 is configured to drive the secondary reflection subunit 142 to sequentially translate to N second reflection positions along the first direction according to the driving signal sequence.

The first driving unit 12 drives the image generating unit 11 to sequentially translate to N target positions along the first direction according to N driving signals, that is, the translatable image generating unit 11, the translatable primary reflecting subunit 141 and the translatable secondary reflecting subunit 142 can be combined, so that the miniaturized image generating unit 11 can achieve the large-size image output effect, the difficult problem of processing of the large-size secondary reflecting subunit is solved, and the manufacturing cost of system parts is greatly reduced. Or, the first driving unit drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals, that is, the image generating unit 11 capable of rotating and translating can be combined with the primary reflecting subunit 141 capable of translating and the secondary reflecting subunit 142 capable of translating, so that the miniaturized image generating unit 11 can achieve the effect of outputting large-size images, the difficult problem of processing the large-size secondary reflecting subunit is solved, and the manufacturing cost of system parts is greatly reduced.

The image generating unit 11 generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying the nth split image information to the first-stage reflecting subunit 141 translated to the nth first reflecting position, the reflected light of the first-stage reflecting subunit 141 is incident to the second-stage reflecting subunit 142 translated to the nth second reflecting position, and the second-stage reflecting subunit 142 projects the light carrying the nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the case that the image generating unit 11 generates two split images, for the scheme of combining the translatable image generating unit 11 with the translatable primary reflecting subunit 141 and the translatable secondary reflecting subunit 142, reference is made to fig. 16 and 17, where the solid line is a light refraction path carrying the information of the split image 1, and the dotted line is a light refraction path carrying the information of the split image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 16) and the target position 2 (reference numeral 112 in fig. 16) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially and correspondingly transmits the light ray carrying the information of the split image 1 and the light ray carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the second reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; the second-stage reflection subunit 142 is driven by the third driving unit 16 to perform translational switching at the second reflection position e1 and the second reflection position e2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the primary reflecting subunit 141 at the first reflecting position d1 and the secondary reflecting subunit 142 at the second reflecting position e1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the primary reflecting subunit 141 at the first reflecting position d2 and the secondary reflecting subunit 142 at the second reflecting position e2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

Taking n=2, that is, taking the case that the image generating unit 11 generates two split images, for the scheme of combining the rotatable image generating unit 11 with the translatable primary reflecting subunit 141 and the translatable secondary reflecting subunit 142, reference is made to fig. 18, where the solid line is a light refraction path carrying the information of the split image 1, and the dotted line is a light refraction path carrying the information of the split image 2, the image generating process is as follows: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 18) and the target position 2 (reference numeral 112 in fig. 18) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially and correspondingly transmits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the second reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; the second-stage reflection subunit 142 is driven by the third driving unit 16 to perform translational switching at the second reflection position e1 and the second reflection position e2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the primary reflecting subunit 141 at the first reflecting position d1 and the secondary reflecting subunit 142 at the second reflecting position e1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the primary reflecting subunit 141 at the first reflecting position d2 and the secondary reflecting subunit 142 at the second reflecting position e2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

As shown in fig. 19, the head-up display system 20 further includes a second driving unit 15, where the second driving unit 15 is configured to drive the first-stage reflection subunit 141 to sequentially translate to N first reflection positions along the first direction according to the driving signal sequence.

The secondary reflecting subunit 142 includes N micro freeform mirrors arranged in a first direction, for example, as shown in fig. 19, and the secondary reflecting subunit 142 includes two micro freeform mirrors f1 and f2 arranged in the first direction.

The first driving unit 12 drives the image generating unit 11 to sequentially translate to N target positions along the first direction according to N driving signals, that is, the translatable image generating unit 11, the translatable primary reflecting subunit 141 and a plurality of small secondary reflecting subunits 142 can be combined, so that the small image generating unit 11 can achieve the effect of outputting large-size images, the difficult problem of processing the large-size secondary reflecting subunits is solved, and the manufacturing cost of system parts is greatly reduced. Or, the first driving unit 12 drives the image generating unit 11 to rotate to N target positions according to N driving signals clockwise or anticlockwise according to a preset rotation angle, that is, the rotatable image generating unit 11, the translatable primary reflecting subunit 141 and the plurality of small secondary reflecting subunits 142 can be combined, so that the small image generating unit 11 can achieve the large-size image output effect, the difficult process processing problem of the large-size secondary reflecting subunit is solved, and the manufacturing cost of system parts is greatly reduced.

The image generating unit 11 generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflecting subunit 141 translated to an nth first reflecting position, the reflected light of the first-stage reflecting subunit 141 is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying nth split image information to the projection medium 9 so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

Specifically, taking n=2, that is, taking the image generating unit 11 generates two split images as an example, for a scheme of combining the translatable image generating unit 11 with the translatable primary reflecting subunit 141 and the multi-block compact secondary reflecting subunit 142, reference is made to fig. 19 and 20, where a solid line is a light refraction path carrying information of the split image 1, and a dotted line is a light refraction path carrying information of the split image 2, and the image generating process thereof: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 translates at the target position 1 (reference numeral 111 in fig. 19) and the target position 2 (reference numeral 112 in fig. 19) under the driving of the first driving unit 12 to switch the output positions of the split image, and sequentially and correspondingly transmits the light ray carrying the information of the split image 1 and the light ray carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the second reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the micro free-form surface mirror f1 in the first reflecting subunit 141 and the second reflecting subunit 142 at the first reflecting position d1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the micro free-form surface mirror f2 in the first reflecting subunit 141 and the second reflecting subunit 142 at the first reflecting position d2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

Taking n=2, that is, taking the case that the image generating unit 11 generates two split images, for the scheme of combining the rotatable image generating unit 11 with the translatable primary reflecting subunit 141 and the multiple small secondary reflecting subunits 142, reference is made to fig. 21, where the solid line is a light refracting path carrying the information of the split image 1, and the dotted line is a light refracting path carrying the information of the split image 2, the image generating process is as follows: the controller 13 sequentially transmits the split image source signals and the driving signals, the image generating unit 11 changes the rotation angle at the target position 1 (reference numeral 111 in fig. 21) and the target position 2 (reference numeral 112 in fig. 21) under the driving of the first driving unit 12 to switch the output direction of the split image, and sequentially and correspondingly transmits the light carrying the information of the split image 1 and the light carrying the information of the split image 2 to the first-stage reflecting subunit 141 according to the received split image source signals; the primary reflection subunit 141 is driven by the second driving unit 15 to perform translational switching at the first reflection position d1 and the second reflection position d2, so as to correspondingly reflect the light carrying the information of the split image 1 and the light carrying the information of the split image 2; thus, the light carrying the information of the split image 1 is reflected to the split image setting area c1 corresponding to the target area in the projection medium 9 through the micro free-form surface mirror f1 in the first reflecting subunit 141 and the second reflecting subunit 142 at the first reflecting position d1, and the light carrying the information of the split image 2 is reflected to the split image setting area c2 corresponding to the target area in the projection medium 9 through the micro free-form surface mirror f2 in the first reflecting subunit 141 and the second reflecting subunit 142 at the first reflecting position d2, so that the user can see the front view floating virtual image, namely the target display image 30, in the position area of the eye box 110, and the target display image 30 is a complete image formed by splicing the split image 1 of the split image setting area c1 and the split image 2 of the split image setting area c 2.

In some embodiments, referring to fig. 22, under the condition that the respective split image images are not overlapped and have no pitch and the primary reflecting subunit 141 is fully utilized in the first direction, the length of the primary reflecting subunit 141 along the first direction satisfies l1=n×l2, where L1 is the length of the primary reflecting subunit along the first direction, L2 is the translation distance of the image generating unit once, that is, L2 is the distance that the first driving unit drives the image generating unit to translate along the first direction when the position of the image generating unit is switched. In practical application, the size of L2 may be defined according to practical requirements such as the size of the output image.

For example, taking n=2, that is, the image generating unit 11 generates two split images, as shown in fig. 22, the first driving unit 12 drives the image generating unit 11 to move from the target position 1 to the target position 2 by a distance L2 in the first direction, in order to effectively use the primary reflecting subunit 141, the length L1 of the primary reflecting subunit 141 in the first direction at least satisfies l1=2l2, whereby the split image 1 and the split image 2 can be spliced without a space to form the target display image.

In some embodiments, referring to fig. 23 or 24, the preset rotation angle satisfies:

Wherein θ is a preset rotation angle, L ₁ For the length of the first-order reflection subunit, H is the distance between the image generation unit and the first-order reflection subunit, L ₀ Is the distance between the image generation unit and the perpendicular bisector of the primary reflection subunit.

Specifically, the partial images are not overlapped and have no space and oneThe rotation axis of the image generating unit 11 coincides with the perpendicular bisectors of the primary reflecting subunit 141, i.e. the distance L between the image generating unit and the perpendicular bisectors of the primary reflecting subunit, under the condition that the primary reflecting subunit 141 is fully utilized in the first direction ₀ When=0, as shown in fig. 23, the preset rotation angle is maximum; the rotation axis of the image generating unit 11 is not coincident with the perpendicular bisectors of the primary reflecting subunit 141, i.e. the distance L between the image generating unit and the perpendicular bisectors of the primary reflecting subunit ₀ When not equal to 0, the preset rotation angle is shown in fig. 24. Wherein, the magnitude of the preset rotation angle can be defined according to actual conditions.

In summary, according to the head-up display system 20 of the embodiment of the present application, the first driving unit 12 is used to drive and change the position or angle of the image generating unit 11, so as to form the spliced target display image of each split image generated by the image generating unit 11, thereby obtaining the display content equivalent to that of the large-size image generating unit, so as to effectively relieve the urgent requirement of the head-up display system on the large-size image generating unit, effectively reduce the arrangement space of the heat dissipation and cooling system, reduce the overall packaging volume of the head-up display system, enable the head-up display system to be easily mounted on more vehicle types, and improve the applicability. In addition, the application also solves the difficult problem of processing the large-size free-form surface mirror by combining the miniaturized image generating unit with the miniaturized plane reflecting mirror and the miniaturized free-form surface mirror, thereby greatly reducing the manufacturing cost of system parts.

A second aspect of the present invention provides a vehicle, as shown in fig. 25, the vehicle 100 includes the head-up display system 20 provided in the above embodiment.

In some embodiments, the projection medium of the head-up display system 20 is disposed on a front windshield of a vehicle, so that the head-up display system 20 displays required driving information of the vehicle on the front windshield according to an optical reflection principle, so that a driver does not need to frequently look down at driving parameters, and the driver can observe the road surface with more attention, thereby realizing active driving safety.

An embodiment of the third aspect of the present invention provides a control method of a head-up display system, as shown in fig. 26, where the control method at least includes steps S1 to S3.

Step S1, acquiring vehicle running information and position setting information of an image generating unit of a head-up display system.

Specifically, the head-up display system is applied to a vehicle, a controller of the head-up display system is connected with relevant sensors of the vehicle, and based on information collected by the relevant sensors in real time, the controller can directly acquire vehicle running information, or the controller of the head-up display system is communicated with an on-board controller or a whole-vehicle controller of the vehicle, so that the controller can indirectly acquire the vehicle running information. And, the controller of the head-up display system may set the position detection unit to detect the position setting information of the image generation unit in real time.

And S2, forming vehicle running information into an image splitting source signal sequence according to the split image setting information of the target display image, generating a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially sending out corresponding split image source signals and driving signals in the image splitting source signal sequence and the driving signal sequence.

And S3, driving the image generating unit to move to the corresponding target position according to the driving signals in the driving signal sequence, controlling the image generating unit to generate sub-image images at each target position according to the corresponding sub-image source signals in sequence, and emitting light carrying sub-image information so as to sequentially project the light carrying the sub-image information onto a projection medium, and displaying the corresponding sub-image images in the sub-image setting areas corresponding to the target areas, wherein each sub-image is spliced into a target display image.

That is, under the control of the controller of the head-up display system, the controller can sequentially drive the image generating units according to the driving signal sequence to change the positions of the image generating units and change the directions of light rays emitted by the image generating units, so that when the image generating units are positioned at different positions, light rays carrying different split-image information can be emitted according to different split-image source signals, and then the light rays carrying different split-image information are reflected to the projection medium to display different split-image images in different split-image setting areas of the projection medium, and therefore, the principle of eye vision retention is utilized, and the display on the projection medium is a complete image spliced by the split-image images, namely a target display image, for a user to view. By adjusting the light emission direction of the image generating unit, the application can display a plurality of split images after the light emitted by the image generating unit is reflected, can meet the aim of larger output pictures based on visual retention, also does not need to arrange a plurality of image generating units or select a large-size image generating unit, realizes the effect of outputting the large-size image by the miniaturized image generating unit, effectively relieves the urgent need of the large-size PGU, reduces the whole packaging volume, saves the arrangement space and reduces the manufacturing cost.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heads-up display system, comprising:

an image generating unit and a first driving unit;

the controller is used for acquiring vehicle running information and position setting information of the image generation unit, forming the vehicle running information into an image splitting source signal sequence according to split image setting information of a target display image, generating a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially sending out corresponding split image source signals and driving signals in the image splitting source signal sequence and the driving signal sequence;

the first driving unit is connected with the controller and the image generating unit, and is used for sequentially receiving driving signals in the driving signal sequence, driving the image generating unit to move to corresponding target positions according to the driving signals, generating an image splitting image at each target position according to corresponding image splitting image source signals, and emitting light carrying image splitting information;

And the reflection unit is used for sequentially projecting the incident light carrying the split image information onto a projection medium so as to display the corresponding split image in the split image setting area corresponding to the target area, wherein each split image is spliced into the target display image.

2. The heads-up display system of claim 1 wherein the reflective unit comprises:

the primary reflection subunit is arranged on an emergent light path of the image generation unit for transmitting light carrying split image information and is used for reflecting the light carrying the split image information;

the secondary reflection subunit is arranged on the reflection light path of the primary reflection subunit and is used for reflecting the light rays reflected by the primary reflection subunit again to the projection medium.

3. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the image splitting image source signal sequence comprises N image splitting image source signals, and the driving signal sequence comprises N driving signals, wherein N is an integer greater than 1;

the primary reflecting subunit is provided with N first reflecting areas which are arranged along a first direction;

The secondary reflection subunit has N second reflection regions arranged along the first direction;

the first driving unit drives the image generating unit to sequentially translate to N target positions along the first direction according to N driving signals, or drives the image generating unit to sequentially rotate to N target positions clockwise or anticlockwise according to a preset rotation angle according to N driving signals;

the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to an nth second reflection area of the secondary reflection subunit, and the nth second reflection area of the secondary reflection subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

4. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the head-up display system further comprises a second driving unit, wherein the second driving unit is used for driving the primary reflecting subunit to sequentially translate to N first reflecting positions along a first direction according to the driving signal sequence;

the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflecting subunit which is translated to an nth first reflecting position, the reflected light of the first-stage reflecting subunit is incident to an nth second reflecting area of the second-stage reflecting subunit, and the nth second reflecting area of the second-stage reflecting subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

5. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the primary reflecting subunit has N first reflecting regions arranged along the first direction;

the head-up display system further comprises a third driving unit, wherein the third driving unit is used for driving the secondary reflection subunit to sequentially translate to N second reflection positions along a first direction according to the driving signal sequence;

the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to the secondary reflection subunit which translates to an nth second reflection position, and the secondary reflection subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

6. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the secondary reflection subunit comprises N micro free-form surface mirrors arranged along the first direction;

the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and emits light carrying nth split image information to an nth first reflection area of the primary reflection subunit, the reflected light of the nth first reflection area of the primary reflection subunit is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying the nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

7. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the head-up display system further includes:

the second driving unit is used for driving the primary reflecting subunit to sequentially translate to N first reflecting positions along a first direction according to the driving signal sequence;

the third driving unit is used for driving the secondary reflecting subunit to sequentially translate to N second reflecting positions along the first direction according to the driving signal sequence;

the image generating unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflecting subunit which translates to an nth first reflecting position, the reflected light of the first-stage reflecting subunit is incident to the second-stage reflecting subunit which translates to an nth second reflecting position, and the second-stage reflecting subunit projects the light carrying nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

8. The heads-up display system of claim 2 wherein the display device is configured to display a plurality of images,

the image generation unit generates an nth split image at an nth target position according to an nth split image source signal, and transmits light carrying nth split image information to the first-stage reflection subunit which translates to an nth first reflection position, the reflected light of the first-stage reflection subunit is incident to an nth micro free-form surface mirror, and the nth micro free-form surface mirror projects the light carrying the nth split image information to the projection medium so as to display the nth split image in a split image setting area corresponding to the target area, wherein N is less than or equal to N.

9. The heads-up display system of any of claims 3-8, wherein a length of the primary reflective subunit along the first direction satisfies l1=n_l2, wherein L1 is a length of the primary reflective subunit along the first direction and L2 is a translation distance of the image generation unit once.

10. The heads-up display system of any of claims 3-8, wherein the preset rotation angle satisfies:

11. A vehicle comprising the heads-up display system of any of claims 1-10.

12. The vehicle of claim 11, wherein the projection medium of the heads-up display system is disposed on a front windshield of the vehicle.

13. A method for controlling a head-up display system, comprising:

acquiring vehicle running information and position setting information of an image generating unit of the head-up display system;

Forming an image splitting source signal sequence from the vehicle driving information according to the image splitting setting information of the target display image, generating a driving signal sequence corresponding to the image splitting source signal sequence according to the position setting information, and sequentially sending out corresponding image splitting source signals and driving signals in the image splitting source signal sequence and the driving signal sequence;

and driving the image generating unit to move to a corresponding target position according to driving signals in the driving signal sequence in sequence, controlling the image generating unit to generate split image images at each target position according to corresponding split image source signals in sequence, and emitting light carrying split image information so as to sequentially project the light carrying the split image information onto a projection medium, so that corresponding split image images are displayed in split image setting areas corresponding to target areas, wherein each split image is spliced into the target display image.