Virtual step testing device and virtual step testing method for virtual image display device

Abstract

The present disclosure relates to the field of electromechanical testing technology, and provides a virtual step test device and a virtual step test method for a virtual image display device. The virtual step test device for a virtual image display device is provided by arranging a camera, a reflector, and a virtual image display device on a test bench, and arranging a bearing part for placing a profiling cavity of the virtual image display device and a clamping mechanism for fixing the virtual image display device on the test bench, and a quick-release structure is provided between the bearing part and the test bench; the virtual image display device forms a virtual image on the reflector, and the camera and the reflector are arranged at intervals, and the virtual image is aimed at for shooting; a controller controls the action of an amplifying element of the virtual image display device and analyzes the photographed virtual image, so that the profiling cavity can finally detect whether the shape of the shell of the virtual image display device meets the specification, and the controller analyzes the delay relationship between the rotation of the amplifying element and the change of the virtual image position to obtain the virtual step situation of the virtual image display device.

Description

Technical Field

[0001] The present disclosure relates to the field of electromechanical testing technology, and in particular to a virtual step testing device and a virtual step testing method for a virtual image display device. Background Art

[0002] In a virtual image display device, a motor is usually used in conjunction with a lead screw or a gear matching structure to drive the magnifying element of the virtual image display device to rotate. For example, the magnifying element is a curved mirror, so as to achieve the purpose of changing the position of the projected image of the virtual image display device. However, since the lead screw or the gear matching structure has a gap, when the motor changes the direction of the driving lead screw or gear, the gap of the lead screw or the gear matching structure will cause the rotation of the curved mirror to be interrupted and cause virtual steps, thereby affecting the display quality of the virtual image display device. Summary of the invention

[0003] In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a virtual step testing device and a virtual step testing method for a virtual image display device.

[0004] The present disclosure provides a virtual step test device for a virtual image display device, comprising a test bench, a camera, a reflector, a virtual image display device and a controller;

[0005] The camera, the reflector and the virtual image display device are all arranged on the test bench, the test bench is provided with a bearing part and a clamping mechanism, a quick release structure is provided between the bearing part and the test bench, the surface of the bearing part is recessed to form a contour cavity, the contour cavity is suitable for placing the virtual image display device, the clamping mechanism is arranged on the bearing part, and the clamping mechanism is suitable for pressing the virtual image display device;

[0006] The virtual image display device is located below the reflector, the image light emitted by the virtual image display device is reflected by the reflector to form a virtual image, the camera is spaced apart from the reflector and is aimed at the virtual image formed by the reflection of the reflector;

[0007] The controller is electrically connected to the virtual image display device and the camera respectively, and is used at least to control the action of the magnifying element of the virtual image display device and to analyze the virtual image captured by the camera.

[0008] Optionally, the test bench includes a bench base plate, a camera bracket and a reflector bracket, the camera bracket is connected to one end of the bench base plate, the reflector bracket is connected to the other end of the bench base plate, the reflector is arranged at an end of the reflector bracket away from the base plate, and the camera bracket is used to fix the camera at a preset position in the eye box area of ​​the virtual image display device.

[0009] Optionally, the reflector bracket includes a reflector bracket base and a connecting rod, the connecting rod is arranged on the reflector bracket base, the reflector is arranged on the connecting rod, and the bearing part is arranged on the reflector bracket base.

[0010] Optionally, a fixing fixture is provided on the test bench for fixing the reflector on the test bench.

[0011] Optionally, the fixing fixture includes a bearing base and a clamping member, the bearing base is arranged on the connecting rod, and the clamping member is connected to the bearing base and is used to fix the reflecting member on the bearing base.

[0012] Optionally, the bearing base includes at least two windshield bearing plates, at least two of the windshield bearing plates are arranged around the reflector, and each of the bearing plates is provided with a receiving groove, and the edge of the windshield screen is clamped with the receiving groove.

[0013] Optionally, the clamping member includes a fixing portion, an abutment head and a locking portion, the fixing portion is connected to the supporting base, the abutment head is rotatably connected to the fixing portion, and the locking portion is connected to the abutment head for driving the abutment head to rotate.

[0014] Optionally, the clamping mechanism includes a pressure head and a rotary lifting cylinder. The rotary lifting cylinder is provided on the bearing portion, and the pressure head is provided at one end of the rotary lifting cylinder away from the bearing portion. When the virtual image display device is placed in the contour cavity, the rotary lifting cylinder drives the pressure head to rotate and drives the pressure head to move in a direction close to the virtual image display device so that the pressure head abuts against the virtual image display device.

[0015] Optionally, there are multiple clamping mechanisms, and the multiple clamping mechanisms are relatively arranged on the bearing portion.

[0016] Optionally, when the virtual image display device is installed in the contoured cavity, the bottom of the virtual image display device fits with the inner side surface of the contoured cavity to detect the shape of the shell of the virtual image display device.

[0017] The virtual step test device of the virtual image display device provided by the present disclosure comprises a test bench, a camera, a reflector, a virtual image display device and a controller; the camera, the reflector and the virtual image display device are all arranged on the test bench, a bearing part and a clamping mechanism are arranged on the test bench, the bearing part is arranged on the test bench, a quick release structure is arranged between the bearing part and the test bench, a profile cavity is formed by a depression on the surface of the bearing part, the profile cavity is suitable for placing the virtual image display device, the clamping mechanism is arranged on the bearing part, and the clamping mechanism is suitable for pressing the virtual image display device; the virtual image display device is located below the reflector, so that the virtual image display device The image light emitted by the virtual image display device is reflected by the reflective member to form a virtual image, the camera is spaced apart from the reflective member and is aimed at the virtual image formed by the reflection of the reflective member; the controller is electrically connected to the virtual image display device and the camera respectively, and is at least used to control the action of the magnifying element of the virtual image display device and analyze the virtual image picture taken by the camera, so that the profiling cavity can finally locate the position of the virtual image display device and detect whether the shape of the shell of the virtual image display device meets the specification, and the delay relationship between the rotation of the magnifying element of the virtual image display device and the change of the virtual image position is analyzed by the controller to obtain the virtual step of the virtual image display device.

[0018] The present disclosure also provides a virtual step test method, using the virtual step test device of the virtual image display device as described above, comprising the following steps:

[0019] The controller controls the motor of the virtual image display device to rotate, so that the motor drives the magnifying element of the virtual image display device to move, and the camera photographs the first position of the virtual image formed by the virtual image display device after being reflected by the reflector;

[0020] The controller controls the motor of the virtual image display device to rotate in the reverse direction, and the camera photographs a second position of a virtual image formed by the virtual image display device after being reflected by the reflective element;

[0021] The controller analyzes the delay between the change of the rotation direction of the motor of the virtual image display device and the change of the position of the virtual image to determine the virtual step parameter of the virtual image display device.

[0022] The virtual step testing method provided by the present disclosure uses the virtual step testing device of the virtual image display device as described above to analyze the time required for the virtual image to move from a first position to a second position when the rotation direction of the motor of the virtual image display device changes, so as to accurately obtain the virtual step parameters of the virtual image display device, thereby improving the convenience of detecting the virtual step operation of the virtual image display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a structural schematic diagram of the testing device according to an embodiment of the present disclosure;

[0026] Figure 2 It is a schematic diagram of the assembly structure of the projection device, the bearing part and the clamping mechanism according to an embodiment of the present disclosure.

[0027] Among them, 1. test bench; 11. bench bottom plate; 12. reflector bracket; 13. camera bracket; 14. fixing fixture; 141. bearing base; 142. clamping member; 2. reflector; 3. virtual image display device; 4. camera; 51. bearing part; 52. clamping mechanism. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0030] The inventor has found through research that when driving the amplifying element in reverse, it will cause the amplifying element to rotate discontinuously and cause virtual steps to appear. Therefore, it is necessary to test the virtual step situation of the virtual image display device to improve the user experience when using the virtual image display device.

[0031] Reference Figure 1 and Figure 2As shown, the embodiment of the present disclosure provides a virtual step test device for a virtual image display device, including a test bench 1, a camera 4, a reflector 2, a virtual image display device 3 and a controller; the camera 4, the reflector 2 and the virtual image display device 3 are all arranged on the test bench 1, and the test bench 1 is provided with a bearing part 51 and a clamping mechanism 52, the bearing part 51 is arranged on the test bench 1, and a quick release structure is provided between the bearing part 51 and the test bench 1, the surface of the bearing part 51 is recessed to form a profiling cavity, and the profiling cavity is suitable for placing the virtual image display device 3, and the clamping mechanism 52 is arranged on the bearing part 51, and the clamping mechanism 52 is suitable for pressing the virtual image display device 3; the virtual image display device 3 is located below the reflector 2, and the image light emitted by the virtual image display device 3 is reflected by the reflector 2 to form a virtual image, the camera 4 is spaced apart from the reflector 2, and is aligned with the virtual image formed by the reflection of the reflector 2; the controller is electrically connected to the virtual image display device 3 and the camera 4 respectively, and is at least used to control the action of the amplifying element of the virtual image display device 3 and analyze the virtual image picture taken by the camera 4.

[0032] Specifically, the virtual image display device 3 can be selected as a HUD device, which is called Head-Up Display in English. It is a head-up display, also known as a head-up display system, such as a vehicle driver-centric, blind operation, and multi-function instrument panel. The function of the HUD device is to project important driving information such as speed and navigation onto the windshield in front of the driver or the co-driver, so that the driver can see important driving information such as speed and navigation without lowering his head or turning his head as much as possible. For example, the structure of the HUD device includes a shell, an image source, a curved mirror and a motor. The curved mirror is installed in the shell as a reflective magnifying element, the image source is arranged in the shell, and the motor is connected to the curved mirror so that the curved mirror can rotate relative to the shell. The image emitted by the image source is projected onto the front windshield after being reflected and magnified by the curved mirror, and the front windshield reflects the image light to the eye box area. It can be understood here that the area where the observer needs to view the image can be preset according to actual needs, that is, the eye box area (eyebox), and the eye box area refers to the area where the observer's eyes are located and the image displayed by the display device can be seen, for example, it can be a plane area or a three-dimensional area.

[0033] The HUD device is used to be installed near the control console of the car, with the curved mirror facing the front windshield of the car. After the virtual image display device 3 is started, the image projected by the image source can be magnified by the curved mirror and projected onto the front windshield. The image is reflected by the front windshield to the user to form a virtual image, so that the driver can see the virtual image information projected by the HUD device on the car windshield in real time. The motor drives the curved mirror to rotate to adjust the angle of the projected light. Since the motor will have a delay when changing the rotation state of the curved mirror and generate virtual steps, the virtual step test system of the virtual image display device provided in the embodiment of the present disclosure is needed to detect the virtual steps of the HUD device to adjust the parameters of the HUD device to ensure that the HUD device can be accurately controlled by the user in actual applications.

[0034] The above-mentioned test bench 1 can be selected to be provided with two steel frames at both ends of a rectangular panel, and the camera 4 and the reflector 2 are respectively installed on the two steel frames. Of course, the test bench 1 can also be selected to be an electric control cabinet, and two gantries are relatively arranged on the internal storage plane of the electric control cabinet, the gantries are perpendicular to the storage plane, and the cameras 4 and the reflector 2 are respectively installed on the two gantries. The above-mentioned quick-release structure can be selected to be a buckle arranged on the test bench 1, and the number of buckles can be two. The bearing part 51 is placed between the two buckles, and the buckle is engaged with the bottom of the bearing part 51, so that the bearing part 51 can be quickly installed and removed from the test bench 1; of course, the quick-release structure can also be selected to be a positioning pin and a knob, a positioning hole is set on the test bench 1, a through hole is set on the bearing part 51, a positioning pin is used to pass through the through hole and inserted into the positioning hole, and a knob is installed at the end of the positioning pin away from the test bench, so that the bearing part 51 and the test bench 1 can be quickly installed and removed.

[0035] The above-mentioned reflector 2 can be selected as a rectangular panel. The reflector 2 is set to simulate the windshield of a car, so the reflector 2 can be selected as a part of the windshield of the car. Of course, the reflector 2 can also be selected as a transparent panel made of resin or other materials. The curvature of the reflector 2 is consistent with the windshield of the car. The reflector 2 is tilted on the test bench 1. Specifically, the reflector 2 can be selected to form an angle of 45° with the ground. Of course, the reflector 2 can also be selected to form an angle of 60° with the ground. The value of the angle between the reflector 2 and the ground is determined according to the angle between the windshield of different models and the ground.

[0036] The above-mentioned bearing part 51 can be selected as a rectangular platform, and of course it can also be selected as a cylindrical platform; the bearing part 51 can be selected to be connected to the test bench 1 by bolts, and of course it can also be selected to be connected to the test bench 1 by positioning pins; the side of the bearing part 51 close to the virtual image display device 3 can be selected to be recessed to form a profiling cavity, and the profiling cavity can be selected as a rectangular cavity. The internal shape and internal size of the profiling cavity are consistent with the shape and size of the shell of the virtual image display device 3. The profiling cavity can be selected to accommodate the lower half of the virtual image display device 3, and of course it can also be selected to accommodate the bottom of the shell of the virtual image display device 3; the profiling cavity can locate the position of the virtual image display device 3 on the bearing part 51, and at the same time, it can also detect whether the shell of the virtual image display device 3 is manufactured in accordance with the specifications, so as to avoid the shell of the virtual image display device 3 being difficult to install in the car due to excessive tolerance during manufacturing.

[0037] The above-mentioned clamping mechanism 52 can be selected as a bolt set on the bearing part 51, and a screw hole is set on the virtual image display device 3. After the virtual image display device 3 is placed on the bearing part 51, a bolt is used to pass through the screw hole and a nut is set on the bolt to connect the virtual image display device 3 with the bearing part 51; of course, the clamping mechanism 52 can also be selected as a cylinder installed on the bearing part 51, and a pressure head is set at the head of the cylinder. The virtual image display device 3 is placed on the bearing part 51, and the head of the cylinder descends so that the pressure head presses on the virtual image display device 3, thereby fixing the virtual image display device 3 with the bearing part 51.

[0038] The above-mentioned controller can be selected as a computer, or the controller can be selected as a chip. The magnifying element of the virtual image display device 3 can be selected as the curved mirror in the HUD device. The controller is connected to the motor in the HUD device to control the action of the magnifying element. The rotation of the magnifying element causes the position of the virtual image on the reflector 2 to move. The camera 4 transmits the movement information of the virtual image position on the reflector 2 to the controller. The virtual step of the virtual image display device 3 can be obtained by the delay between the start-up of the motor of the virtual image display device 3 and the movement of the position of the virtual image on the reflector 2.

[0039] During specific use, the virtual image display device 3 is placed in the profiling cavity, the virtual image display device 3 is mounted on the bearing portion 51 using the clamping mechanism 52, the virtual image display device 3 is started, a virtual image is projected on the reflective member 2, and the magnifying element of the virtual image display device 3 is controlled to rotate by the controller so that the position of the virtual image formed by reflection from the reflective member 2 changes. The camera 4 captures the virtual image position change information and transmits the virtual image position change information to the controller. The delay between the rotation of the magnifying element of the virtual image display device 3 and the virtual image position change is analyzed to obtain the virtual step of the virtual image display device 3.

[0040] In other words, the principle of virtual step test is that rotating the curved mirror of HUD will produce virtual images at different positions. By analyzing the virtual images at different positions, the virtual step of the motor that drives the curved mirror can be obtained. In this way, after the motor is installed in the vehicle, the virtual step of the motor can be compensated before using the HUD. In this way, when the user issues a command to control the virtual image to adjust to the target position, the HUD can accurately adjust and control it.

[0041] The test bench 1, the camera 4, the reflector 2, the virtual image display device 35 and the controller are provided; the camera 4, the reflector 2 and the virtual image display device 3 are all provided on the test bench 1, the test bench 1 is provided with a bearing part 51 and a clamping mechanism 52, the bearing part 51 is provided on the test bench 1, a quick release structure is provided between the bearing part 51 and the test bench 1, a contour cavity is formed on the surface of the bearing part 51, and the contour cavity is suitable for placing the virtual image display device 3,

[0042] The clamping mechanism 52 is disposed on the bearing portion 51, and the clamping mechanism 52 is suitable for pressing the virtual image display device 3; the virtual image display device 3 is located below the reflector 2, so that the virtual image display device 3

[0043] The image light emitted is reflected by the reflector 2 to form a virtual image, the camera 4 is spaced apart from the reflector 2 and is aimed at the virtual image formed by the reflection of the reflector 2; the controller is electrically connected to the virtual image display device 3 and the camera 4 respectively, and is at least used to control the magnifying element of the virtual image display device 3

[0044] The virtual image captured by the camera 4 is analyzed, and finally the profiling cavity can locate the position of the virtual image display device 3 and detect whether the shell shape of the virtual image display device 3 is

[0045] It complies with the specification, and the controller analyzes the delay between the rotation of the magnifying element of the virtual image display device 3 and the change of the virtual image position to obtain the virtual step situation of the virtual image display device 3.

[0046] Reference Figure 1 and Figure 2 As shown, in some embodiments, the test bench 1 includes a bench bottom

[0047] The camera bracket 13 and the reflector bracket 12 are connected to one end of the stand bottom plate 11, and the reflector bracket 12 is connected to the other end of the stand bottom plate 11.

[0048] The camera support 13 is arranged at the end of the reflector support 12 away from the bottom plate, and is used to fix the camera 4 at a preset position of the eye box area of ​​the virtual image display device 3, for example, the preset position is the center of the eye box area.

[0049] The bracket can be selected as a rectangular bracket, or a cylindrical bracket. The reflector bracket 5 can be selected as a rectangular bracket, or a cylindrical bracket;

[0050] The stand base plate 11, the camera bracket 13 and the reflector bracket 12 are selected as an integrated structure. Of course, the stand base plate 11, the camera bracket 13 and the reflector bracket 12 can also be connected by bolts.

[0051] The light projected by the virtual image display device 3 onto the reflector 2 forms a virtual image after being reflected by the reflector 2. When the user faces the reflector 2, the eyes need to be located within a certain spatial range to see the virtual image projected by the virtual image display device 3. This spatial range is the eye box area of ​​the virtual image display device 3. The camera 4 can be fixed to the camera bracket 13 with bolts, and the height of the camera bracket 13 can be designed so that the camera 4 is located in the center of the eye box area. Of course, a buckle can also be provided on the camera bracket 13, and the camera 4 can be fixed to the camera bracket 13 by the buckle, and the camera 4 can be located on one side edge of the eye box area close to the ground.

[0052] The test bench 1 includes a bench base plate 11, a camera bracket 13 and a reflector bracket 12, the camera bracket 13 is connected to one end of the bench base plate 11, the reflector bracket 12 is connected to the other end of the bench base plate 11, the reflector 2 is arranged at the end of the reflector bracket 12 away from the base plate, and the camera bracket 13 is used to fix the camera 4 at a preset position in the eye box area of ​​the virtual image display device 3, so that the camera 4 can finally accurately record the virtual image position change information on the reflector 2, thereby improving the accuracy of the virtual step detection device of the virtual image display device in virtual step detection.

[0053] Reference Figure 1 and Figure 2 As shown, in some embodiments, the reflector bracket 12 includes a reflector bracket base and a connecting rod, the connecting rod is arranged on the reflector bracket base, the reflector 2 is arranged on the connecting rod, and the bearing part 51 is arranged on the reflector bracket base. Specifically, the reflector bracket base can be selected as a rectangular structure, and of course it can also be selected as a cylindrical structure. The connecting rod is arranged on the reflector bracket base, and the connecting rod and the reflector bracket base can be selected as an integrated structure, and of course it can also be selected to connect the connecting rod to the reflector bracket base by bolts, and the volume of the reflector bracket base is greater than the volume of the connecting rod; the bearing part 51 can be selected to be connected to the reflector bracket base by bolts, and of course it can also be selected that a buckle is provided on the reflector bracket base, and the bearing part 51 is connected to the reflector bracket base by buckles.

[0054] By setting the reflector bracket 12 to include a reflector bracket base and a connecting rod, the connecting rod is set on the reflector bracket base, and the reflector 2 is set on the connecting rod, and the bearing portion 51 is set on the reflector bracket base, the reflector bracket base can ultimately lower the center of gravity of the reflector bracket 12, improve the stability of the reflector bracket 12, and avoid the reflector bracket 12 from vibrating and causing the reflector 2 to shake, thereby affecting the clarity of the image captured by the camera 4, and resulting in a reduction in the accuracy of the virtual image position change information captured by the camera 4.

[0055] Reference Figure 1 and Figure 2 As shown, in some embodiments, a fixing fixture 14 is provided on the test bench 1, which is used to fix the reflector 2 on the test bench 1. Specifically, the fixing fixture 14 can be selected as a stainless steel clamp connected to the connecting rod. Of course, a screw rod can also be selected to be provided on the connecting rod, and a through hole can be provided on the reflector 2. The screw rod passes through the through hole and is installed on the screw rod using a nut, so that the reflector 2 is located between the connecting rod and the nut, and the reflector 2 is installed on the connecting rod by abutting the nut with the reflector 2 after the nut is tightened.

[0056] By setting a fixing fixture 14 on the test bench 1 to fix the reflector 2 on the test bench 1, the reflector 2 can be conveniently and quickly connected to and detached from the connecting rod through the fixing fixture 14, thereby improving the convenience of installing and replacing the reflector 2 on the reflector bracket 12.

[0057] Reference Figure 1 and Figure 2 As shown, in some embodiments, the fixing fixture 14 includes a bearing base 141 and a clamping member 142 . The bearing base 141 is disposed on a connecting rod, and the clamping member 142 is connected to the bearing base 141 for fixing the reflector 2 on the bearing base 141 .

[0058] Specifically, the supporting base 141 can be selected as a rectangular panel, or an elliptical panel. The clamping member 142 can be connected to the supporting base 141 by bolts, or by riveting. The supporting base 141 can be selected to be at a 45° angle to the ground, or at a 60° angle to the ground. The clamping member 142 can be selected as a stainless steel clip, or two magnets, one of which is installed on the supporting base 141. The reflector 2 is placed on the supporting base 141, and another magnet is placed on the reflector 2. The reflector 2 is fixed to the supporting base 141 by the magnetic force of the magnets.

[0059] By setting up a fixing clamp 14 including a bearing base 141 and a clamping member 142, the bearing base 141 is set on a connecting rod, and the clamping member 142 is connected to the bearing base 141, so as to fix the reflector 2 on the bearing base 141, and finally the reflector 2 is stably installed on the bearing base 141 through the clamping member 142, thereby improving the stability of the reflector 2 when it is installed on the reflector bracket 12.

[0060] Reference Figure 1 and Figure 2 As shown, in some embodiments, the supporting base 141 includes at least two windshield supporting plates, at least two windshield supporting plates are arranged around the reflective member 2, and receiving grooves are provided on the supporting plates, and the edges of the reflective member 2 are snap-fitted with the receiving grooves. Specifically, the windshield supporting plates can be selected as rectangular panels, and the two windshield supporting plates can be selected to be arranged around the edges of the reflective member 2. A receiving groove can be selected on the side of the windshield supporting plate opposite to the reflective member 2, so that when the reflective member 2 is placed on the windshield supporting plate, the edge of the reflective member 2 abuts against the side wall of the supporting groove. Of course, it is also possible to select supporting grooves on the opposite sides of the two windshield supporting plates, insert the edge of the reflective member 2 into the receiving groove, so that the two windshield supporting plates can be arranged around the edge of the reflective member 2.

[0061] By setting the supporting base 141 to include at least two windshield supporting plates, at least two windshield supporting plates are arranged around the reflector 2, and receiving grooves are provided on the windshield supporting plates, the edges of the reflector 2 are clamped with the receiving grooves, and finally the edges of the reflector 2 are clamped with the receiving grooves to stably connect the reflector 2 and the supporting base 141, thereby improving the stability of the connection between the reflector 2 and the supporting base 141.

[0062] Reference Figure 1 and Figure 2 As shown, in some embodiments, the clamping member 142 includes a fixing portion, an abutting head and a locking portion, the fixing portion is connected to the bearing base 141, the abutting head is rotatably connected to the fixing portion, and the locking portion is connected to the abutting head, and is used to drive the abutting head to rotate. Specifically, the fixing portion can be selected as a rectangular structure, and of course it can also be selected as a cylindrical structure, and the abutting head can be selected as a rectangular structure, and of course it can also be selected as a cylindrical structure; one end of the fixing portion is connected to the bearing base 141, and the other end is rotatably provided with an abutting head, when the reflector 2 is placed on the bearing base 141, the abutting head can be rotated in a direction close to the bearing base 141, so that the reflector 2 is placed on the bearing base 141, and the abutting head abuts against a side of the reflector 2 away from the bearing base 141; the locking portion can fix the relative position between the abutting head and the fixing portion, so that the reflector 2 is stably set on the bearing base 141 through friction, and the locking portion can be selected as a buckle set between the abutting head and the fixing portion, and of course it can also be selected to set magnets on the abutting head and the fixing portion respectively, so that the abutting head and the fixing portion can maintain the stability of the position through magnetic force.

[0063] By setting the clamping member 142 including a fixing portion, an abutment joint and a locking portion, the fixing portion is connected to the supporting base 141, the abutment joint is rotatably connected to the fixing portion, and the locking portion is connected to the abutment joint, which is used to drive the abutment joint to rotate, so that the reflector 2 can be stably installed on the supporting base 141 through the cooperation of the fixing portion, the abutment joint and the locking portion, thereby improving the stability of the connection between the reflector 2 and the test bench 1.

[0064] Reference Figure 1 and Figure 2 As shown, in some embodiments, the clamping mechanism 52 includes a pressure head and a rotary lifting cylinder. The bearing portion 51 is provided with a rotary lifting cylinder. The end of the rotary lifting cylinder away from the bearing portion 51 is provided with a pressure head. When the virtual image display device 3 is placed in the contour cavity, the rotary lifting cylinder drives the pressure head to rotate and drives the pressure head to move in a direction close to the virtual image display device 3 so that the pressure head abuts against the virtual image display device 3.

[0065] Specifically, the rotary lifting cylinder can be selected as a cylinder or a servo motor; the rotary lifting cylinder can be set on the bearing part 51 by bolts, and of course, rivets can be used to connect the rotary lifting cylinder to the bearing part 51; the pressure head can be selected as a rectangular panel, and of course, an elliptical panel can be selected, and the rotary lifting cylinder can be set at the edge of the bearing part 51. When the virtual image display device 3 is not placed on the bearing part 51, the pressure head rotates in a direction away from the center of the bearing part 51 to provide space for the virtual image display device 3 to be placed on the bearing part 51. When the virtual image display device 3 is placed on the bearing part 51, the rotary lifting cylinder rotates the pressure head, and the pressure head rotates to the top of the virtual image display device 3. The rotary lifting cylinder drives the pressure head to move downward so that the pressure head abuts against the virtual image display device 3, thereby stably installing the virtual image display device 3 on the bearing part 51.

[0066] By setting up a clamping mechanism 52 including a pressure head and a rotary lifting cylinder, a rotary lifting cylinder is provided on the bearing part 51, and a pressure head is provided at one end of the rotary lifting cylinder away from the bearing part 51, so that when the virtual image display device 3 is placed in the contour cavity, the rotary lifting cylinder drives the pressure head to rotate and drives the pressure head to move in a direction close to the virtual image display device 3, so that the pressure head abuts against the virtual image display device 3, and finally the rotary lifting device cooperates with the pressure head to stably connect the virtual image display device 3 and the bearing part 51, thereby improving the stability of the connection between the virtual image display device 3 and the bearing part 51.

[0067] Reference Figure 1 and Figure 2As shown, in some embodiments, there are multiple clamping mechanisms 52, and the multiple clamping mechanisms 52 are relatively arranged on the bearing portion 51. Specifically, two clamping mechanisms 52 can be selected to be arranged on the bearing portion 51, and of course, four clamping mechanisms 52 can also be selected to be arranged on the bearing portion 51, or other numbers of clamping mechanisms 52 are not limited to being arranged on the bearing portion 51.

[0068] By providing a plurality of clamping mechanisms 52 and arranging the plurality of clamping mechanisms 52 relatively to each other on the carrying portion 51 , the plurality of clamping mechanisms 52 can stably mount the virtual image display device 3 on the carrying portion 51 .

[0069] Reference Figure 1 and Figure 2 As shown, in some embodiments, when the virtual image display device 3 is installed in the profiling cavity, the bottom of the virtual image display device 3 is fitted with the inner side surface of the profiling cavity to detect the shell shape of the virtual image display device 3. Specifically, the lower half of the shell of the virtual image display device 3 can be selected as the bottom of the virtual image display device 3, and the bottom of the virtual image display device 3 is fitted with the inner side surface of the profiling cavity, so that the virtual image display device 3 with a shell shape that does not meet the specifications cannot be stably placed in the profiling cavity, so as to realize the use of the profiling cavity to check whether the shell shape of the virtual image display device 3 meets the regulations.

[0070] When the virtual image display device 3 is installed in the profiling cavity, the bottom of the virtual image display device 3 is fitted with the inner side of the profiling cavity to detect the shape of the shell of the virtual image display device 3. Ultimately, the virtual image display device 3 that does not meet the specified shell shape cannot be stably placed in the profiling cavity, so that the profiling cavity can locate the position of the virtual image display device 3 and detect whether the shell of the virtual image display device 3 meets the specifications.

[0071] The embodiment of the present disclosure also provides a virtual step test method, using the virtual step test device of the virtual image display device of any of the above embodiments, comprising the following steps:

[0072] The controller controls the motor of the virtual image display device 3 to rotate, so that the motor drives the magnifying element of the virtual image display device 3 to move, such as driving the curved mirror to rotate. Specifically, the controller can be selected to control the motor of the virtual image display device 3, so that the motor rotates to drive the curved mirror of the curved HUD device to rotate, thereby changing the position of the virtual image on the reflector 2, and the camera 4 captures the first position of the virtual image formed by the virtual image display device 3 after being reflected by the reflector 2;

[0073] The controller controls the motor of the virtual image display device 3 to rotate in the opposite direction, and the motor can be selected to drive the curved mirror of the HUD device to rotate, and the camera 4 captures the second position of the virtual image formed by the virtual image display device 3 after being reflected by the reflector 2;

[0074] The controller analyzes the delay between the change of the motor rotation direction of the virtual image display device 3 and the change of the position of the virtual image to determine the virtual step parameter of the virtual image display device 3. Specifically, the time required for the virtual image to move from the first position to the second position when the motor rotation direction of the virtual image display device 3 changes can be selected as the delay of the position change of the virtual image.

[0075] By using the virtual step testing device of the virtual image display device as above, and analyzing the time required for the virtual image to move from the first position to the second position when the motor rotation direction of the virtual image display device 3 changes, the virtual step parameters of the virtual image display device 3 can be accurately obtained, thereby providing data for subsequent performance adjustments of the virtual image display device 3 and improving the convenience of detecting the virtual step operation of the virtual image display device 3.

[0076] During specific use, the virtual image display device 3 is placed in the contoured cavity of the bearing part 51, the clamping mechanism 52 is used to connect the virtual image display device 3 to the bearing part 51, the lens of the virtual image display device 3 is directed toward the reflector 2, and the virtual image display device 3 is used to project a virtual image onto the reflector 2. The controller sends a signal to the virtual image display device 3 to control the rotation of the magnifying element of the virtual image display device 3 to change the position of the virtual image projected on the reflector 2, the camera 4 captures the virtual image position change information and transmits the virtual image position change information to the controller, and the software compares and analyzes the time required for the motor rotation direction change of the HUD device and the virtual image position change when the virtual image display device 3 sends a signal to obtain the virtual step of the virtual image display device 3.

[0077] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A virtual step test device for a virtual image display device, characterized in that: It comprises a test bench (1), a camera (4), a reflector (2), a virtual image display device (3) and a controller; The camera (4), the reflector (2) and the virtual image display device (3) are all arranged on the test bench (1); a bearing portion (51) and a clamping mechanism (52) are provided on the test bench (1); a quick-release structure is provided between the bearing portion (51) and the test bench (1); a surface of the bearing portion (51) is recessed to form a contoured cavity, the contoured cavity is suitable for placing the virtual image display device (3); the clamping mechanism (52) is arranged on the bearing portion (51), and the clamping mechanism (52) is suitable for pressing the virtual image display device (3); The virtual image display device (3) is located below the reflector (2); the image light emitted by the virtual image display device (3) is reflected by the reflector (2) to form a virtual image; the camera (4) is spaced apart from the reflector (2) and is aimed at the virtual image formed by the reflection of the reflector (2); The controller is electrically connected to the virtual image display device (3) and the camera (4) respectively, and is used at least to control the action of the magnifying element of the virtual image display device (3) and to analyze the picture of the virtual image captured by the camera (4), wherein the controller controls the motor of the virtual image display device (3) to rotate forward or reversely, so that the motor drives the magnifying element of the virtual image display device (3) to move, and the controller analyzes the delay between the change of the rotation direction of the motor of the virtual image display device (3) and the change of the position of the virtual image, so as to determine the virtual step of the virtual image display device (3); When the virtual image display device (3) is installed in the profiling cavity, the bottom of the virtual image display device (3) fits the inner side surface of the profiling cavity to detect the shape of the shell of the virtual image display device (3).

2. The virtual step test device according to claim 1, characterized in that: The test bench (1) comprises a bench bottom plate (11), a camera bracket (13) and a reflector bracket (12); the camera bracket (13) is connected to one end of the bench bottom plate (11), the reflector bracket (12) is connected to the other end of the bench bottom plate (11), the reflector (2) is arranged at one end of the reflector bracket (12) away from the bottom plate, and the camera bracket (13) is used to fix the camera (4) at a preset position in the eye box area of ​​the virtual image display device (3).

3. The virtual step test device according to claim 2, characterized in that: The reflector bracket (12) comprises a reflector bracket base and a connecting rod, wherein the connecting rod is arranged on the reflector bracket base, the reflector (2) is arranged on the connecting rod, and the bearing portion (51) is arranged on the reflector bracket base.

4. The virtual step test device according to claim 3, characterized in that: The test bench (1) is provided with a fixing fixture (14) for fixing the reflecting element (2) on the test bench (1).

5. The virtual step test device according to claim 4, characterized in that: The fixing fixture (14) comprises a bearing base (141) and a clamping member (142); the bearing base (141) is arranged on the connecting rod; the clamping member (142) is connected to the bearing base (141) and is used to fix the reflecting member (2) on the bearing base (141).

6. The virtual step test device according to claim 5, characterized in that: The bearing base (141) comprises at least two windshield bearing plates, the at least two windshield bearing plates are arranged around the reflector (2), and the bearing plates are each provided with a receiving groove, and the edge of the reflector (2) is clamped with the receiving groove.

7. The virtual step test device according to claim 5, characterized in that: The clamping member (142) comprises a fixing portion, an abutment portion and a locking portion, the fixing portion is connected to the supporting base (141), the abutment portion is rotatably connected to the fixing portion, and the locking portion is connected to the abutment portion for driving the abutment portion to rotate.

8. The virtual step test device according to claim 1, characterized in that: The clamping mechanism (52) comprises a pressure head and a rotary lifting cylinder. The rotary lifting cylinder is provided on the bearing portion (51). The pressure head is provided at one end of the rotary lifting cylinder away from the bearing portion (51). When the virtual image display device (3) is placed in the contour cavity, the rotary lifting cylinder drives the pressure head to rotate and drives the pressure head to move in a direction close to the virtual image display device (3), so that the pressure head abuts against the virtual image display device (3).

9. The virtual step test device according to claim 1, characterized in that: There are multiple clamping mechanisms (52), and the multiple clamping mechanisms (52) are relatively arranged on the bearing portion (51).

10. A virtual step test method, characterized in that: The virtual step testing device of the virtual image display device according to any one of claims 1 to 9 comprises the following steps: The controller controls the motor of the virtual image display device (3) to rotate, so that the motor drives the magnifying element of the virtual image display device (3) to move, and the camera (4) photographs the first position of the virtual image formed by the virtual image display device (3) after being reflected by the reflective element (2); The controller controls the motor of the virtual image display device (3) to rotate in the opposite direction, and the camera (4) photographs a second position of a virtual image formed by the virtual image display device (3) after being reflected by the reflective element (2); The controller analyses the delay between the change in the rotation direction of the motor of the virtual image display device (3) and the change in the position of the virtual image, so as to determine the virtual step of the virtual image display device (3).

Images