Test device

Abstract

This application discloses a testing device belonging to the field of vehicle technology. The testing device is used for a head-up display (HUD). The HUD includes a diffuser, a first reflector, and a second reflector. The testing device includes a support mechanism and an adjustment mechanism. The first and second reflectors are connected to the support mechanism, and the adjustment mechanism connects the support mechanism and the diffuser. The adjustment mechanism is configured to adjust the diffuser to move relative to the support mechanism in at least three directions, so that the diffuser, the first reflector, and the second reflector are aligned along the light path transmission direction. By using the adjustment mechanism, the diffuser can be moved and adjusted relative to the support mechanism in at least three directions, ensuring that the diffuser, the first reflector, and the second reflector are aligned along the light path transmission direction, thus meeting the working requirements of the HUD and eliminating the need to install the HUD on a vehicle, simplifying the testing process of the HUD.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a testing device. Background Technology

[0002] A head-up display (HUD) projects driving information such as speed and navigation onto the vehicle's windshield using a reflective principle. Drivers do not need to look down to check the instrument panel and navigation information, which reduces the risk of traffic accidents caused by the time difference between looking down and looking up, thereby improving driving safety.

[0003] Before a head-up display (HUD) can be put into use, it needs to be tested to ensure it meets operational requirements. In related technologies, testing is typically conducted after the HUD is installed in the vehicle. Because the installation process is quite complex, the testing process for HUDs is also quite complex. Utility Model Content

[0004] The purpose of this application is to provide a testing device that simplifies the testing process of head-up displays, thereby at least partially solving the aforementioned technical problems.

[0005] To achieve the above objectives, this application provides a testing apparatus for a head-up display (HUD). The HUD includes a diffuser, a first reflector, and a second reflector. The testing apparatus includes:

[0006] A support mechanism, wherein the first reflector and the second reflector are connected to the support mechanism;

[0007] Adjustment mechanism, which connects the support mechanism and the diffuser;

[0008] The adjustment mechanism is configured to adjust the diffuser to move relative to the support mechanism in three directions, so that the diffuser, the first reflector, and the second reflector are arranged along the optical path transmission direction.

[0009] Optionally, the adjustment mechanism includes a first adjustment component, a second adjustment component, and a third adjustment component. The first adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a first direction. The second adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a second direction. The third adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0010] Optionally, the adjustment mechanism further includes a fourth adjustment component configured to adjust the diffuser to rotate relative to the support mechanism, the axis of rotation of the diffuser extending along any one of the first, second, and third directions.

[0011] Optionally, the adjustment mechanism further includes a fourth adjustment component, the first adjustment component is connected to the support mechanism, the second adjustment component is connected to the first adjustment component and the third adjustment component, and the fourth adjustment component is connected to the third adjustment component and the diffuser.

[0012] Optionally, the support mechanism includes a support platform connected to the adjustment mechanism and a first support base connected to the support platform. The first support base has a rotating groove, and the second reflector has a rotating part. At least a portion of the rotating part passes through the rotating groove so that the second reflector can be rotated and adjusted relative to the first support base.

[0013] Optionally, the first support has a support portion and a limiting portion connected to the support platform, a rotating groove is formed between the support portion and the limiting portion, and the limiting portion and the support portion are detachably connected.

[0014] Optionally, the support mechanism includes multiple support members, and the second reflector has multiple eye box positions corresponding to the support members. When the second reflector is in any eye box position, the support member is connected to the first support base and abuts against the second reflector.

[0015] Optionally, the testing device further includes a light source, which is disposed opposite to the second reflector, so that the emitted light from the light source is reflected by the second reflector to the first reflector, and then reflected by the first reflector to the diffuser.

[0016] Optionally, the support mechanism includes a second support base connected to the first reflector. The second support base has an installation space and an opening that exposes the installation space. The diffuser and the first reflector are exposed within the installation space, and the reflective surface of the second reflector faces the opening.

[0017] Optionally, the second support has a relief hole communicating with the installation space, and at least a portion of the adjustment mechanism passes through the relief hole.

[0018] In the testing apparatus of this application embodiment, the first reflector and the second reflector are directly mounted on the support mechanism, and the diffuser is adjusted relative to the support mechanism in at least three directions to ensure that the diffuser, the first reflector, and the second reflector are arranged along the optical path transmission direction, which meets the working requirements of the head-up display. Therefore, it is not necessary to install the head-up display on a vehicle, which simplifies the testing process of the head-up display. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a partial structural schematic diagram of the test apparatus in an exemplary embodiment of the present disclosure;

[0022] Figure 2 yes Figure 1 A schematic diagram of the optical path of the testing device during testing, shown in the cross-sectional view at point AA.

[0023] Figure 3 yes Figure 1 A schematic diagram of the decomposition process;

[0024] Figure 4 yes Figure 1 Sectional view at point BB;

[0025] Figure 5 This is a partial structural schematic diagram of the test apparatus in another exemplary embodiment of this disclosure;

[0026] Explanation of reference numerals in the attached figures:

[0027] 11. Diffuser; 12. First reflector; 13. Second reflector; 131. Rotating part; 14. Projection medium;

[0028] 2. Support mechanism; 21. Support platform; 22. First support seat; 221. Rotating groove; 222. Support part; 223. Limiting part; 23. Support component; 24. Second support seat; 241. Installation space; 242. Opening; 243. Clearance hole;

[0029] 3. Adjustment mechanism; 31. First adjustment component; 32. Second adjustment component; 33. Third adjustment component; 34. Fourth adjustment component;

[0030] 4. Light source;

[0031] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0033] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0034] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0035] Reference Figure 1 As shown, this application provides a testing device for a head-up display.

[0036] In this embodiment, the head-up display can be an augmented reality head-up display (AR-HUD).

[0037] In some embodiments, in conjunction with reference Figure 2 As shown, the head-up display includes a diffuser 11, a first reflector 12, and a second reflector 13.

[0038] In this embodiment, the diffuser 11 is capable of diffusing light of the working wavelength. The first reflector 12 and the second reflector 13 are capable of reflecting light of the working wavelength.

[0039] For example, the head-up display also includes a projection medium 14, which may be the windshield of a vehicle.

[0040] In some embodiments, the testing apparatus includes a support mechanism 2 and an adjustment mechanism 3.

[0041] In this embodiment, the support mechanism 2 can be installed on the corresponding work platform to facilitate the installation and removal of the head-up display by the test personnel.

[0042] In some embodiments, the first reflector 12 and the second reflector 13 are connected to the support mechanism 2.

[0043] In this embodiment, after the first reflector 12 and the second reflector 13 are mounted on the support mechanism 2, the phase position between the first reflector 12 and the second reflector 13 and the support mechanism 2 can be fixed or adjustable. The mounting position of the first reflector 12 and the second reflector 13 on the support mechanism 2 can be determined according to the optical design requirements of the head-up display.

[0044] In some embodiments, the adjustment mechanism 3 connects the support mechanism 2 and the diffuser 11.

[0045] In this embodiment, the support mechanism 2 and the diffuser 11 are interconnected by an adjustment mechanism 3. The adjustment mechanism 3 can be used to control the movement of the diffuser 11 relative to the support mechanism 2, thereby testing the impact of the diffuser 11 at different positions or angles on the head-up display.

[0046] In some embodiments, the adjustment mechanism 3 is configured to adjust the diffuser 11 to move relative to the support mechanism 2 in at least three directions, so that the diffuser 11, the first reflector 12, and the second reflector 13 are arranged along the optical path transmission direction.

[0047] In this embodiment, the adjustment mechanism 3 can move and adjust the diffuser 11 in at least three directions, which increases the adjustment range of the diffuser 11 and helps to determine the optimal installation position of the diffuser 11, that is, the display effect of the head-up display is best when the diffuser 11 is in this position.

[0048] In this embodiment, as Figure 2 The light path is shown by the dashed line with arrows. The light emitted from the diffuser 11 is reflected by the first reflector 12 and the second reflector 13 in sequence, and finally projected onto the projection medium 14 for imaging.

[0049] In this embodiment, the first reflector 12 and the second reflector 13 are directly mounted on the support mechanism 2, and the adjustment mechanism 3 is used to enable the diffuser 11 to move and adjust relative to the support mechanism 2 in at least three directions, ensuring that the diffuser 11, the first reflector 12, and the second reflector 13 can be arranged along the optical path transmission direction, which meets the working requirements of the head-up display. Therefore, it is not necessary to install the head-up display on a vehicle, which simplifies the testing process of the head-up display and improves the testing efficiency of the head-up display.

[0050] In some embodiments, in conjunction with reference Figure 1 and Figure 3 As shown, the adjustment mechanism 3 includes a first adjustment component 31, a second adjustment component 32, and a third adjustment component 33.

[0051] In this embodiment, the adjustment mechanism 3 achieves three-directional movement adjustment of the diffuser 11 through the first adjustment component 31, the second adjustment component 32 and the third adjustment component 33.

[0052] In some embodiments, the first adjustment component 31 is configured to adjust the movement of the diffuser 11 relative to the support mechanism 2 along a first direction X.

[0053] In this embodiment, by adjusting the knob of the first adjustment component 31, the diffuser 11 can be driven to translate relative to the support mechanism 2 along the first direction X.

[0054] In some embodiments, the second adjustment component 32 is configured to adjust the diffuser 11 to move relative to the support mechanism 2 along the second direction Y.

[0055] In this embodiment, by adjusting the knob of the second adjustment component 32, the diffuser 11 can be driven to translate relative to the support mechanism 2 along the second direction Y.

[0056] In some embodiments, the third adjustment component 33 is configured to adjust the movement of the diffuser 11 relative to the support mechanism 2 along a third direction Z.

[0057] In this embodiment, by adjusting the knob of the third adjustment component 33, the diffuser 11 can be driven to translate relative to the support mechanism 2 along the third direction Z.

[0058] In some embodiments, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular.

[0059] In this embodiment, the adjustment mechanism 3, through the first adjustment component 31, the second adjustment component 32 and the third adjustment component 33, realizes the movement adjustment of the diffuser 11 in three mutually perpendicular directions (i.e., the first direction X, the second direction Y and the third direction Z), realizes the arbitrary movement adjustment of the diffuser 11 within the spatial range, increases the movement range of the diffuser 11, and is conducive to determining the optimal installation position of the diffuser 11.

[0060] In other embodiments, the first direction X, the second direction Y, and the third direction Z may also intersect each other in pairs.

[0061] In some embodiments, the adjustment mechanism 3 further includes a fourth adjustment component 34.

[0062] In this embodiment, the adjustment mechanism 3 achieves rotational adjustment of the diffuser 11 through the fourth adjustment component 34, which can adjust the placement angle of the diffuser 11, increases the adjustment methods of the diffuser 11, and helps to determine the optimal installation angle of the diffuser 11.

[0063] In some embodiments, the fourth adjustment component 34 is configured to adjust the diffuser 11 to rotate relative to the support mechanism 2.

[0064] In this embodiment, by adjusting the knob of the fourth adjustment component 34, the diffuser 11 can be driven to rotate relative to the support mechanism 2.

[0065] In some embodiments, the axis of rotation of the diffuser 11 extends along any one of the first direction X, the second direction Y, and the third direction Z.

[0066] In this embodiment, the rotation axis of the diffuser 11 is parallel to or collinear with any one of the first direction X, the second direction Y, and the third direction Z. This increases the adjustment method (i.e., increases rotational adjustment) while simplifying the adjustment mechanism 3 and reducing the manufacturing difficulty of the adjustment mechanism 3.

[0067] In this embodiment, the adjustment mechanism 3 can adjust the diffuser 11 in four degrees of freedom, namely, translational adjustment in three directions and rotational adjustment around a rotation axis. Therefore, it can accommodate all placement positions and angles of the diffuser 11 in optical design, test the diffuser 11 under various conditions affected by stray light, meet testing requirements, and has high measurement accuracy.

[0068] For example, such as Figure 1 The axis of rotation of the diffuser 11 is parallel to or collinear with the second direction Y.

[0069] In other embodiments, the axis of rotation of the diffuser 11 may also extend along the first direction X or the third direction Z, thereby satisfying different angle requirements of the diffuser 11.

[0070] In some embodiments, continue to refer to Figure 1 and Figure 3 As shown, the first adjustment component 31 is connected to the support mechanism 2, the second adjustment component 32 is connected to the first adjustment component 31 and the third adjustment component 33, and the fourth adjustment component 34 is connected to the third adjustment component 33 and the diffuser 11.

[0071] In this embodiment, the first adjustment component 31, the second adjustment component 32, the third adjustment component 33 and the fourth adjustment component 34 are connected end to end in sequence, and the different adjustment components are connected in series.

[0072] In this embodiment, compared with the parallel connection degree-of-freedom adjustment scheme, this scheme improves the range of motion of the diffuser 11, and the four degrees of freedom can be adjusted independently of each other. The structure and cost of the adjustment mechanism 3 are also lower.

[0073] In this embodiment, the fourth adjustment component 34, which realizes rotational adjustment, is connected to the end of the adjustment mechanism 3, which can reduce the load on the fourth adjustment component 34.

[0074] In some embodiments, the support mechanism 2 includes a support platform 21 connected to the adjustment mechanism 3 and a first support base 22 connected to the support platform 21.

[0075] In this embodiment, the first support base 22 and the adjustment mechanism 3 (e.g., the first adjustment component 31) are both connected to the support platform 21, which can fix the relative position between the first support base 22 and the adjustment mechanism 3.

[0076] In some embodiments, the first support 22 has a rotating groove 221, and the second reflector 13 has a rotating part 131.

[0077] In this embodiment, the second reflector 13 is mounted on the vehicle using a rotating part 131, allowing the second reflector 13 to be rotated and adjusted to switch between multiple eye box positions. The rotating groove 221 is adapted to the rotating part 131 of the second reflector 13; for example, the inner diameter of the rotating groove 221 is adapted to the outer diameter of the rotating part 131, thereby enabling the second reflector 13 to be rotated relative to the first support 22.

[0078] In some embodiments, at least a portion of the rotating part 131 passes through the rotating groove 221 so that the second reflector 13 can be rotated relative to the first support 22.

[0079] In this embodiment, after the second reflector 13 is mounted on the first support base 22 using the rotating part 131, it can be rotated and adjusted relative to the first support base 22, thereby simulating the effect of the second reflector 13 on the head-up display at different angles.

[0080] In this embodiment, the second reflector 13 is a reflector at the end of the head-up display. By rotating and adjusting the second reflector 13, different eye box positions of the head-up display can be simulated.

[0081] In some embodiments, in conjunction with reference Figure 3 and Figure 4 As shown, the first support base 22 has a support portion 222 and a limiting portion 223 connected to the support platform 21, and a rotating groove 221 is formed between the support portion 222 and the limiting portion 223.

[0082] In this embodiment, the rotating groove 221 is formed by the limiting part 223 and the supporting part 222 which are separately provided. Compared with the method of directly forming the rotating groove 221 on the first support base 22, it is easier for the rotating part 131 to be installed in the rotating groove 221, thereby making it easier for the second reflector 13 to be installed on the first support base 22.

[0083] In this embodiment, the limiting part 223 and the support part 222 are connected to form a rotating groove 221, which enables the rotating part 131 to be in close contact (e.g., abut against) the inner wall of the rotating groove 221, thereby limiting the relative offset between the second reflector 13 and the first support base 22, for example, limiting the offset between the second reflector 13 and the first support base 22 along the first direction X, the second direction Y and the third direction Z.

[0084] In some embodiments, the limiting portion 223 is detachably connected to the support portion 222.

[0085] In this embodiment, the limiting part 223 and the supporting part 222 are detachably connected, which facilitates the installation and removal of the second reflector 13 and the first support base 22.

[0086] For example, the limiting part 223 and the support part 222 are connected by screws to achieve a detachable connection.

[0087] In some embodiments, the support mechanism 2 includes a plurality of support members 23.

[0088] In this embodiment, each support member 23 adopts a different external size.

[0089] In some embodiments, the second reflector 13 has a plurality of eye box positions that correspond one-to-one with the support 23.

[0090] In this embodiment, based on the required position of the eye box for the second reflector 13, only a support member 23 with the corresponding external dimensions needs to be selected for installation. Compared to a solution that uses a motor to adjust the position of the eye box, this solution achieves switching between different eye box positions through manual adjustment, simplifying the structure of the testing device and reducing testing costs.

[0091] For example, the support mechanism 2 includes three support members 23, and the second reflector 13 has three eye box positions corresponding one-to-one with the support members 23.

[0092] In some embodiments, continue to refer to Figure 1 and Figure 4 As shown, when the second reflector 13 is in any eye box position, the support 23 is connected to the first support base 22 and abuts against the second reflector 13.

[0093] In this embodiment, when the second reflector 13 is in one of the eye box positions, a support member 23 of corresponding external size is selected and connected to (for example, connected to) the first support base 22 by screws, and the support member 23 abuts against the second reflector 13 (for example, abuts against the bottom of the second reflector 13), thereby restricting the second reflector 13 from rotating relative to the first support base 22.

[0094] In this embodiment, by selecting support members 23 of different external dimensions for installation, the second reflector 13 can be switched between different eye box positions, thereby meeting the angle adjustment needs of different eye box positions.

[0095] In some embodiments, continue to refer to Figure 2 As shown, the testing device also includes a light source 4.

[0096] In this embodiment, by adjusting the position and angle of the light source 4, the effects of different sunlight on the head-up display can be simulated, such as simulating the situation where sunlight causes stray light to be generated on the head-up display.

[0097] In some embodiments, the light source 4 and the second reflector 13 are arranged opposite to each other so that the light emitted from the light source 4 is reflected by the second reflector 13 to the first reflector 12, and then reflected by the first reflector 12 to the diffuser 11.

[0098] In this embodiment, as Figure 2 The solid line with arrows indicates the optical path. The light emitted from the light source 4 passes sequentially through the second reflector 13 and the first reflector 12 before entering the diffuser 11. Figure 2 The light path indicated by the dashed line with arrows is such that the light incident on the diffuser 11 is modulated by the diffuser 11, and then passes through the first reflector 12 and the second reflector 13 in sequence before being incident on the projection medium 14.

[0099] In this embodiment, the light source 4 and the reflective surface of the second reflector 13 are opposite each other, and the diffuser 11 can complete the test using the light from the light source 4, thus eliminating the need to install the imaging unit of the head-up display and simplifying the test steps.

[0100] In this embodiment, the light source 4 can be disposed on the top of the second reflector 13. Since sunlight is incident on the projection medium 14 through the second reflector 13 to generate stray light, the light generated by the light source 4 at the top is also reflected from the second reflector 13 to the imaging area of ​​the projection medium 14, thereby reproducing the situation of stray light generated by the head-up display.

[0101] In this embodiment, the test results can be judged visually, for example, by observing the distribution and size of the light spots in the imaging area on the projection medium 14, thus determining the severity of stray light and reducing testing costs. Alternatively, a handheld illuminance meter can be used to test the light intensity, or a thermistor can be placed in the imaging area to judge the test results, thereby improving testing accuracy.

[0102] In this embodiment, based on the test results showing minimal stray light impact, the optimal position and angle of the diffuser 11 at multiple eye box locations can be determined, reducing the stray light impact on the head-up display after installation in the vehicle. This avoids excessive stray light causing poor projection quality and affecting image clarity, thus improving the driver's experience and driving safety.

[0103] In some embodiments, the first reflector 12 is made of metal or plastic, and / or the second reflector 13 is made of metal or plastic.

[0104] In this embodiment, by selecting reflective elements made of different materials, it is possible to verify the impact of materials (e.g., the reflective properties of materials) on the head-up display.

[0105] In this embodiment, the first reflector 12 and the second reflector 13 can be made of the same material, thereby reducing the manufacturing cost of the head-up display.

[0106] For example, such as Figure 1 Both the first reflector 12 and the second reflector 13 are made of plastic. For example... Figure 5 Both the first reflector 12 and the second reflector 13 are made of metal. (Reference) Figure 1 and Figure 5 As shown, when the first reflector 12 and the second reflector 13 are made of different materials, corresponding first support base 22 and second support base 24 can be set to meet the installation requirements of the head-up display.

[0107] In this embodiment, the testing device can simulate the effects of stray light on multiple components of the head-up display (such as the position and angle of the diffuser 11, the materials of the two reflectors, and the position of the eye box of the second reflector 13) under different light sources 4. This eliminates the need to assemble the head-up display or install it in a vehicle, thus improving testing efficiency, reducing testing costs, and meeting testing accuracy requirements.

[0108] In some embodiments, continue to refer to Figure 1 and Figure 3 As shown, the support mechanism 2 includes a second support base 24 connected to the first reflector 12.

[0109] In this embodiment, the second support 24 is connected to the support platform 21. The first reflector 12 is mounted on the support platform 21 using the second support 24, thereby ensuring that the position of the first reflector 12 meets the optical design requirements of the head-up display.

[0110] In some embodiments, the second support 24 has an installation space 241 and an opening 242 that exposes the installation space 241.

[0111] In this embodiment, the second support base 24 is open, and the installation space 241 is formed inside the second support base 24. The installation space 241 is exposed to the outside through the opening 242.

[0112] In some embodiments, the diffuser 11 and the first reflector 12 are exposed within the mounting space 241.

[0113] In this embodiment, the diffuser 11 and the first reflector 12 are located within the mounting space 241, which reduces the light loss during transmission between the diffuser 11 and the first reflector 12. This allows more light emitted from the diffuser 11 to enter the first reflector 12 and ultimately onto the projection medium 14, facilitating testing (e.g., visual inspection). Furthermore, it also allows more reflected light from the first reflector 12 to enter the diffuser 11.

[0114] In this embodiment, the second support 24 not only shields multiple sides of the diffuser 11 and the first reflector 12, but also improves the support strength of the second support 24 for the first reflector 12.

[0115] In some embodiments, continue to refer to Figure 2 As shown, the reflective surface of the second reflector 13 faces the opening 242.

[0116] In this embodiment, light is transmitted between the first reflector 12 and the second reflector 13 through the opening 242, thereby simulating the actual usage scenario of the head-up display in a vehicle.

[0117] In some embodiments, continue to refer to Figure 3 As shown, the second support 24 has a clearance hole 243 communicating with the mounting space 241.

[0118] In this embodiment, the clearance hole 243 is located on the side of the second support 24 facing the adjustment mechanism 3.

[0119] In some embodiments, continue to refer to Figure 1 As shown, at least a portion of the adjusting mechanism 3 passes through the relief hole 243.

[0120] In this embodiment, by providing a clearance hole 243 on the second support 24, interference between the adjustment mechanism 3 and the second support 24 during the adjustment of the diffuser 11 can be avoided. Simultaneously, the light-shielding effect of the second support 24 on the diffuser 11 and the first reflector 12 can be ensured.

[0121] For example, the fourth adjustment component 34 passes through the relief hole 243.

[0122] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0123] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0124] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0125] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A test device, characterized by The testing device is used for a head-up display (HUD), the HUD including a diffuser, a first reflector, and a second reflector, and the testing device includes: A support mechanism, wherein the first reflector and the second reflector are connected to the support mechanism; An adjustment mechanism, wherein the adjustment mechanism connects the support mechanism and the diffuser; The adjustment mechanism is configured to adjust the diffuser to move relative to the support mechanism in at least three directions, so that the diffuser, the first reflector, and the second reflector are arranged along the optical path transmission direction.

2. The test device of claim 1, wherein, The adjustment mechanism includes a first adjustment component, a second adjustment component, and a third adjustment component. The first adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a first direction. The second adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a second direction. The third adjustment component is configured to adjust the diffuser to move relative to the support mechanism along a third direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

3. The test device of claim 2, wherein, The adjustment mechanism further includes a fourth adjustment component configured to adjust the diffuser to rotate relative to the support mechanism, the axis of rotation of the diffuser extending along any one of the first direction, the second direction, and the third direction.

4. The test device of claim 2, wherein, The adjustment mechanism further includes a fourth adjustment component, the first adjustment component is connected to the support mechanism, the second adjustment component is connected to the first adjustment component and the third adjustment component, and the fourth adjustment component is connected to the third adjustment component and the diffuser.

5. The test device of claim 1, wherein, The support mechanism includes a support platform connected to the adjustment mechanism and a first support base connected to the support platform. The first support base has a rotating groove, and the second reflector has a rotating part. At least a portion of the rotating part passes through the rotating groove so that the second reflector can be rotated and adjusted relative to the first support base.

6. The test device of claim 5, wherein, The first support has a support portion and a limiting portion connected to the support platform. The rotating groove is formed between the support portion and the limiting portion, and the limiting portion is detachably connected to the support portion.

7. The test device of claim 5, wherein, The support mechanism includes multiple support members, and the second reflector has multiple eye box positions that correspond one-to-one with the support members. When the second reflector is in any eye box position, the support member is connected to the first support base and abuts against the second reflector.

8. The test device of claim 1, wherein, The testing device further includes a light source, which is disposed opposite to the second reflector, so that the light emitted from the light source is reflected by the second reflector to the first reflector, and then reflected by the first reflector to the diffuser.

9. The test device of claim 1, wherein, The support mechanism includes a second support base connected to the first reflector. The second support base has an installation space and an opening that exposes the installation space. The diffuser and the first reflector are exposed within the installation space, and the reflective surface of the second reflector faces the opening.

10. The test device of claim 9, wherein, The second support has a clearance hole communicating with the mounting space, and at least a portion of the adjustment mechanism passes through the clearance hole.

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