Vehicle-mounted glass HUD imaging detection system and method

Abstract

The invention relates to a vehicle-mounted glass HUD imaging detection system and method. The vehicle-mounted glass HUD imaging detection system comprises a light source assembly, a light adjusting assembly, a brightness detection assembly, a positioning adjusting assembly and a calculation module. The light source assembly is arranged between the light source assembly and the vehicle-mounted glass along the first light path. The brightness detection assembly is arranged on the reflection side of the vehicle-mounted glass along the second light path, and the brightness detection assembly is used for obtaining the first brightness value of the main image and the second brightness value of the auxiliary image. The positioning adjusting assembly is connected with the brightness detection assembly, and the positioning adjusting assembly can drive the brightness detection assembly to rotate relative to the vehicle-mounted glass so that the included angle between the second light path and the vehicle-mounted glass can be adjusted. And the calculation module is used for receiving the first brightness value and the second brightness value and judging whether the vehicle-mounted glass has poor imaging or not according to the first brightness value and the second brightness value. The detection system in the embodiment is beneficial to improving the detection precision of the ghosting.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted glass display detection technology, and in particular to a vehicle-mounted glass HUD imaging detection system and method. Background Art

[0002] With the advancement of intelligent vehicles, HUD (Head-up Display), as a key information and image display technology, is playing an increasingly important role in driving safety and comfort. HUD projects various vehicle information (such as speed and navigation instructions) onto a screen in front of the driver in the form of a virtual image, allowing drivers to obtain the required information without having to look down at the instrument panel, thereby reducing eye movement and improving driving safety.

[0003] However, HUDs face a common problem in practical applications: ghosting. Ghosting occurs when, during the HUD imaging process, one or more secondary images, dimmed in brightness, appear in addition to the primary image due to varying optical refraction and reflection paths. These secondary images can interfere with the driver's ability to discern the primary image, causing double or ghosting. This can cause visual fatigue and compromise the driving experience and safety. Therefore, automotive glass must be tested for ghosting before it leaves the factory as a key quality indicator.

[0004] To ensure the quality of ghost image detection, most detection systems employ a fixed optical path to ensure accuracy. This means the system's light source, light-transmitting components, light-refracting components, and detection components must all be installed along a predefined optical detection path. However, different types of automotive glass and their installation angles create different optical detection paths, causing the position of the image formed on the glass to vary. This can lead to poor alignment between the detection components and the image, compromising ghost image detection accuracy. Summary of the Invention

[0005] Based on this, it is necessary to provide a vehicle-mounted glass HUD imaging detection system and method to improve the detection accuracy of ghost images.

[0006] A vehicle-mounted glass HUD imaging detection system, the vehicle-mounted glass HUD imaging detection system comprising:

[0007] a light source assembly, the light source assembly being configured to emit light; when the light emitted by the light source assembly is emitted along a first light path onto the vehicle-mounted glass, a primary image and a secondary image are formed on the vehicle-mounted glass;

[0008] a light adjustment component, the light adjustment component being disposed between the light source component and the vehicle glass along the first light path;

[0009] a brightness detection assembly, the brightness detection assembly being disposed on the reflective side of the vehicle window along the second light path, the brightness detection assembly being capable of receiving light emitted by the light source assembly and reflected by the vehicle window; the brightness detection assembly being configured to obtain a first brightness value of the primary image and a second brightness value of the secondary image;

[0010] a positioning adjustment component connected to the brightness detection component; the positioning adjustment component is capable of driving the brightness detection component to rotate relative to the vehicle glass, so that the angle between the second light path and the vehicle glass is adjustable;

[0011] A calculation module is communicatively connected to the brightness detection component; the calculation module is used to receive the first brightness value and the second brightness value, and determine whether the vehicle glass has poor imaging based on the first brightness value and the second brightness value.

[0012] In one embodiment, the glass HUD imaging detection system further includes a first angle adjustment component; the first angle adjustment component is used to adjust the rotation angle of the vehicle glass so that the angle between the first light path and the second light path is adjustable.

[0013] In one embodiment, the vehicle glass HUD imaging detection system includes a mounting base, which is used to mount the vehicle glass; the positioning adjustment component is connected to the mounting base and can rotate relative to the mounting base around a first axis, and the first axis is perpendicular to the first light path and the second light path.

[0014] In one embodiment, the vehicle-mounted glass HUD imaging detection system also includes a first guide rail assembly; the positioning adjustment assembly slides with the first guide rail assembly; the first guide rail assembly is arranged in a circular arc rail structure, and the center of the circular arc rail structure is located on the first axis.

[0015] In one embodiment, the positioning and adjustment assembly includes a first bearing bracket and a second guide rail assembly, the first bearing bracket is used to install the brightness detection assembly; the second guide rail assembly is rotatably arranged relative to the vehicle glass to drive the first bearing bracket to rotate relative to the vehicle glass; the first bearing bracket and the second guide rail assembly are slidably matched so that the first bearing bracket drives the brightness detection assembly to slide, so that the distance between the brightness detection assembly and the vehicle glass is adjustable.

[0016] In one embodiment, the light adjustment component includes a polarization light adjustment component, and the polarization light adjustment component includes a first state and a second state; when the polarization light adjustment component is in the first state, the light is separated by the polarization light adjustment component and reflects a first type of polarized light; when the polarization light adjustment component is in the second state, the light is separated by the polarization light adjustment component and reflects a second type of polarized light.

[0017] In one embodiment, the light adjustment component further includes a second angle adjustment component connected to the polarization adjustment component; the polarization adjustment component further includes a third state; when the polarization adjustment component is in the third state, the polarization adjustment component is capable of separating and reflecting a third type of polarized light;

[0018] The second angle adjustment component can drive the polarization light adjustment component to rotate relative to the installation axis between the polarization light adjustment component and the light source component, so that the incident angle of the light on the polarization light adjustment component is adjustable, so that the polarization light adjustment component can switch between the first state, the second state and the third state.

[0019] In one embodiment, the light adjustment assembly further includes a filter adjustment assembly; the filter adjustment assembly includes at least two filters and a second supporting bracket; the at least two filters are mounted on the second supporting bracket, and at least one of the filters is rotatably mounted on the second supporting bracket, so that the filter adjustment assembly can switch between a single filter state and a superimposed filter state;

[0020] When the filter adjustment component is in the single filtering state, one filter is set on the first light path, and the other filters are staggered with the first light path; when the filter adjustment component is in the superimposed filtering state, at least two filters are set on the first light path.

[0021] In one embodiment, the light filtering adjustment component further includes at least one light attenuation plate, which can be rotatably disposed on the second supporting bracket, so that the light attenuation plate can be rotated and switched between being disposed on the first light path and being disposed offset from the first light path.

[0022] In one embodiment, the light source assembly, the polarized light adjustment assembly, the filter adjustment assembly and the vehicle glass are sequentially arranged on the first light path.

[0023] In one embodiment, the light adjustment component further includes a grating component, and the filter adjustment component, the grating component, and the vehicle-mounted glass are sequentially arranged on the first light path.

[0024] In one embodiment, the light adjustment component further includes a diffuser, the diffuser is arranged between the light source component and the polarized light adjustment component, and the diffuser is arranged on the first light path;

[0025] And / or, the light adjustment component further includes an aperture adjustment component, the aperture adjustment component is arranged between the light source component and the polarized light adjustment component, and the aperture adjustment component is arranged on the first light path.

[0026] In one embodiment, the vehicle-mounted glass HUD imaging detection system further includes a height adjustment mechanism and a mounting seat; the mounting seat is used for mounting the vehicle-mounted glass; the height adjustment mechanism is used to adjust the height of at least two of the light adjustment component, the mounting seat, and the brightness detection component, so that the light source component, the light adjustment component, and the vehicle-mounted glass are on the first light path, and the vehicle-mounted glass and the brightness detection component are on the second light path.

[0027] A vehicle-mounted glass HUD imaging detection method, the vehicle-mounted glass HUD imaging detection method includes:

[0028] Turn on the light source component so that a main image and a sub-image are formed on the vehicle-mounted glass;

[0029] Adjust the positioning adjustment component so that the brightness detection component can respectively collect the brightness values of the main image and the sub-image; record the brightness value corresponding to the main image as the first brightness value K1, and record the brightness value corresponding to the sub-image as the second brightness value K2:

[0030] Judge whether there is poor imaging of the vehicle-mounted glass according to the collected brightness values; when K2 / K1 < m, the calculation module judges that there is no poor imaging of the vehicle-mounted glass; otherwise, the calculation module judges that the vehicle-mounted glass has poor imaging; where m is a preset value.

[0031] In one embodiment, the glass HUD imaging detection system further includes a first angle adjustment component; the first angle adjustment component is used to adjust the rotation angle of the vehicle-mounted glass so that the angle between the first light path and the second light path is adjustable;

[0032] The vehicle-mounted glass HUD imaging detection method further includes:

[0033] Obtain the detection angle parameter;

[0034] According to the angle adjustment model, obtaining a rotation angle parameter corresponding to the detection angle parameter;

[0035] The vehicle-mounted glass is driven to rotate according to the rotation angle parameter, so that the angle between the first light path and the second light path becomes a detection angle parameter.

[0036] The aforementioned vehicle glass HUD imaging detection system and method utilizes a light source assembly, a light adjustment assembly, and the vehicle glass, all located within a first light path. When light is emitted through this path and reaches the vehicle glass, a primary image and a secondary image are formed on the glass. Furthermore, a brightness detection assembly and the vehicle glass are both located within a second light path. The positioning adjustment assembly drives the brightness detection assembly to rotate, thereby changing the angle between the second light path and the vehicle glass.

[0037] In this way, the angle between the second light path and the vehicle's glass changes, creating multiple second light paths and forming different optical detection paths. This allows the brightness detection component to measure the brightness of the primary and secondary images from different angles, improving the alignment accuracy of the brightness detection component with the primary and secondary images, thereby enhancing detection accuracy. Furthermore, determining whether the secondary image is visible is based on the brightness ratio between the second brightness value and the first brightness value being less than a preset value, which better aligns with the human brain's visual processing, ensuring that the measured data is more consistent with the human brain's actual recognition data, thereby improving data reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the structure of the vehicle glass HUD imaging detection system shown in one embodiment.

[0039] Figure 2 for Figure 1 Schematic diagram of the connection structure between the positioning adjustment component and the vehicle glass in the vehicle glass HUD imaging detection system shown in the figure.

[0040] Figure 3 This is a functional block diagram of a vehicle-mounted glass HUD imaging detection system in one embodiment.

[0041] Figure 4 Schematic diagram of the process of a vehicle glass HUD imaging detection method in one embodiment.

[0042] Figure 5 1 is a flow chart of steps S001, S002, and S003 in a method for detecting an on-glass HUD imaging according to an embodiment.

[0043] Figure 6 Schematic diagram of the connection structure between the light adjustment component and the light source component in the vehicle glass HUD imaging detection system shown in one embodiment.

[0044] Figure 7 Schematic diagram of the coordinated structure of the polarization adjustment component and the second angle adjustment component in the vehicle glass HUD imaging detection system shown in one embodiment.

[0045] Figure 8 Schematic diagram of the structure of the light source assembly in the vehicle glass HUD imaging detection system shown in one embodiment.

[0046] Description of reference numerals:

[0047] 100. Vehicle glass HUD imaging detection system; 110. Light source assembly; 111. Light source component; 112. Rotation switching component; 113. Third supporting bracket; 120. Light adjustment assembly; 121. Polarization light adjustment assembly; 122. Second angle adjustment assembly; 123. Filter adjustment assembly; 1231. Filter; 1232. Second supporting bracket; 1233. Light attenuation plate; 124. Grating assembly; 125. Diffuser; 126. Iris adjustment assembly; 130. Positioning adjustment assembly; 131. First supporting bracket; 132. Second guide rail assembly; 133. Third angle adjustment assembly; 140. Brightness detection assembly; 150. Calculation module; 160. First angle adjustment assembly; 170. Mounting seat; 180. First guide rail assembly; 190. Height adjustment mechanism; 200. Vehicle glass. DETAILED DESCRIPTION

[0048] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0049] See Figures 1 to 3 As shown, an embodiment of the present application provides a vehicle glass HUD imaging detection system 100, including a light source component 110, a light adjustment component 120, a positioning adjustment component 130, a brightness detection component 140 and a calculation module 150.

[0050] The light source assembly 110 is configured to emit light. When the light emitted by the light source assembly 110 is emitted along a first light path onto the vehicle glass 200, a primary image and a secondary image appear on the vehicle glass 200. It should be noted that the primary image can be understood as the target display image of the HUD system, while the secondary image can be understood as a non-target display image formed by phenomena such as optical reflection or refraction.

[0051] The light adjustment component 120 is arranged between the light source component 110 and the vehicle glass 200 along the first light path. The brightness detection component 140 is arranged on the reflection side of the vehicle glass 200 along the second light path. The brightness detection component 140 can receive the light emitted by the light source component 110 and reflected by the vehicle glass 200. The brightness detection component 140 is used to obtain the first brightness value of the main image and the second brightness value of the sub-image.

[0052] The positioning and adjustment component 130 is connected to the brightness detection component 140. The positioning and adjustment component 130 can drive the brightness detection component 140 to rotate relative to the vehicle glass 200, so that the included angle between the second light path and the vehicle glass 200 is adjustable. <00,00120>As Figure 3 shown, the calculation module 150 is communicatively connected to the brightness detection component 140. The calculation module 150 is used to receive the first brightness value and the second brightness value, and determine whether there is an imaging defect in the vehicle glass 200 according to the first brightness value and the second brightness value.

[0054] Correspondingly, as Figure 4 shown, the above vehicle glass HUD imaging detection system 100 can be applied to implement the vehicle glass HUD imaging detection method. s

[0055] Specifically, the vehicle glass HUD imaging detection method includes:

[0056] [[ID=ID=19]]S100. Turn on the light source component 110 so that a main image and a sub-image are formed on the vehicle glass 200.

[0057] S200. Adjust the positioning and adjustment component 130 so that the brightness detection component 140 can collect the brightness values of the main image and the sub-image respectively. [[ID=ID=24]]

[0058] Among them, the brightness value corresponding to the main image is denoted as the first brightness value K1, and the brightness value corresponding to the sub-image is denoted as the second brightness value K2.

[0059] S300. Determine whether there is an imaging defect in the vehicle glass 200 according to the collected brightness values.

[0060] S310. Determine whether there is K2 / K1 < m. The preset value is denoted as m.

[0061] When K2 / K1 < m, step S320 is executed. The calculation module 150 determines that there is no imaging defect in the vehicle glass 200. It can be understood that when K2 / K1 < m, it can be determined that the sub-image is in a non-visible state.

[0062] When K2 / K1 ≥ m, step S330 is executed, and the calculation module 150 determines that there is an imaging defect in the vehicle-mounted glass 200. Correspondingly, at this time, it can be understood that when K2 / K1 ≥ m, it can be determined that the sub-image is in a visible state.

[0063] It should be noted that in the related art, whether the sub-image can be observed by the naked eye mainly depends on the brightness of the sub-image itself and the visual difference brought by the brightness ratio between the main image and the sub-image. For example, when the first brightness value of the main image is large enough and within the visual range observable by the human eye, it can be observed by the naked eye of an ordinary person. Correspondingly, when the second brightness value of the sub-image is small enough, the sub-image is not within the visual range observable by the human eye and is difficult to be observed by an ordinary person. In addition, the brightness ratio between the main image and the sub-image also affects the visual processing of the brain for the image. When the brightness ratio between the main image and the sub-image is large enough, or when the brightness ratio between the sub-image and the main image is small enough, it can be considered that when the main image and the sub-image simultaneously fall on the retina, the visual processing area of the brain will automatically recognize the main image to enhance the visual effect of the main image, and will weaken the visual effect of the sub-image. At this time, the sub-image is not easily recognized and noticed and will not have too much impact on the driving line of sight.

[0064] In the embodiment of the present application, it is measured whether the sub-image is in a visible state by judging whether there is K2 / K1 < m. Specifically, correspondingly, when the brightness ratio between the second brightness value and the first brightness value is less than the preset value (i.e., K2 / K1 < m), it is determined that the sub-image is in a non-visible state. At this time, it can be considered that the ghost image of the HUD on the vehicle-mounted glass 200 is difficult to be observed by the naked eye, and the imaging standard of the HUD on the vehicle-mounted glass 200 is qualified. When the brightness ratio between the second brightness value and the first brightness value is greater than or equal to the preset value (i.e., K2 / K1 ≥ m), it is determined that the sub-image is in a visible state. At this time, it can be considered that the ghost image of the HUD on the vehicle-mounted glass 200 is easily observed by the naked eye, and the imaging standard of the HUD on the vehicle-mounted glass 200 is qualified.

[0065] It can be understood that the light source component 110, the light adjustment component 120, and the vehicle-mounted glass 200 are all arranged on the first light path (taking the vehicle-mounted glass 200 as the reflection and refraction plane reference, the first light path can be the incident light). When the light is emitted to the vehicle-mounted glass 200 through this path, a main image and a sub-image will be formed on the glass. The brightness detection component 140 and the vehicle-mounted glass 200 are both arranged on the second light path (taking the vehicle-mounted glass 200 as the reflection and refraction plane reference, the second light path can be the reflected light). The positioning adjustment component 130 can drive the brightness detection component 140 to rotate, thereby changing the angle between the second light path and the vehicle-mounted glass 200.

[0066] In this way, the angle between the second light path and the vehicle glass 200 changes, resulting in multiple second light paths, which can form different optical detection paths. This allows the brightness detection component 140 to measure the brightness of the primary image and the secondary image from different angles, which is beneficial for improving the alignment accuracy of the brightness detection component 140 with the primary image and the secondary image, thereby improving detection accuracy. In addition, in this embodiment, the brightness ratio between the second brightness value and the first brightness value is less than a preset value as the basis for determining whether the secondary image is visible. This is more consistent with the human brain's visual processing process, thereby making the measurement data more consistent with the human brain's actual recognition data, thereby improving data reliability.

[0067] Optionally, in one embodiment, the preset value may be between 0.25% and 0.35%.

[0068] Alternatively, in another embodiment, as Figure 3 As shown, the computing module 150 can be communicatively connected with at least one of the light source component 110, the light adjustment component 120 and the positioning adjustment component 130, and the computing module 150 is used to output driving instructions to at least one of the light source component 110, the light adjustment component 120 and the positioning adjustment component 130.

[0069] In some embodiments, see Figure 2 The glass HUD imaging detection system further includes a first angle adjustment component 160. The first angle adjustment component 160 is used to adjust the rotation angle of the vehicle glass 200 so that the angle between the first light path and the second light path is adjustable.

[0070] Accordingly, if Figure 5 As shown, the vehicle glass HUD imaging detection method may also include:

[0071] S001. Obtain detection angle parameters.

[0072] Among them, optionally, in one embodiment, the detection angle parameter can be related to the actual installation angle of the vehicle glass 200, so that: in the vehicle, after the light source assembly 110 is turned on, a light path one is formed between it and the vehicle glass 200, and a light path two is formed with the vehicle glass 200 and the line of sight of the cockpit, and the angle between the light path one and the light path two is the detection angle parameter.

[0073] S002. According to the angle adjustment model, obtain the rotation angle parameter corresponding to the detection angle parameter.

[0074] It is understood that the first angle adjustment assembly 160 can drive the vehicle glass 200 to rotate, making the angle of incidence between the first light path and the vehicle glass 200 adjustable, thereby changing the light emitted from the vehicle glass 200, that is, changing the angle between the second light path and the vehicle glass 200. Based on this, when the rotation angle parameter changes, the detection angle parameter will also change at any time, and an angle adjustment model corresponding to the rotation angle parameter and the detection angle parameter exists.

[0075] S003 , driving the vehicle-mounted glass 200 to rotate according to the rotation angle parameter, so that the angle between the first light path and the second light path is equal to the detection angle parameter.

[0076] Based on this, in one example, the rotation angle parameters of the first angle adjustment component 160 are obtained according to the detected angle parameters to rotationally adjust the first angle adjustment component 160. This is different from adjusting the light adjustment component 120 to change the direction of the first light path. The method of adjusting the first angle adjustment component 160 is simpler and will not interfere with the installation accuracy of the light adjustment component 120.

[0077] By adjusting the angle between the first and second light paths to form the detection angle parameter, the detection angle parameter can be adjusted according to different test scenarios, thereby improving the accuracy of HUD imaging detection and the reference value of test data. Furthermore, the application scenarios of the automotive glass HUD imaging detection system 100 can be enriched.

[0078] It should be noted that, in the above embodiment, the first angle adjustment assembly 160 can be driven manually or electrically.

[0079] In one embodiment, Figure 2 The first angle adjustment assembly 160 is in communication with the computing module 150. Specifically, the vehicle glass HUD imaging detection system includes a mounting base 170, which is used to mount the vehicle glass 200. The first angle adjustment assembly 160 includes a motor and a bearing, and the motor is in communication with the computing module 150. The motor is connected to the mounting base via the bearing. The computing module 150 is configured to drive the motor according to the rotation angle parameter, so that the motor drives the mounting base to rotate via the bearing, thereby causing the mounting base to drive the vehicle glass 200 to rotate.

[0080] In some embodiments, see Figure 2The vehicle-mounted glass HUD imaging detection system 100 includes a mounting base 170, and the mounting base 170 is used to mount the vehicle-mounted glass 200. The positioning adjustment component 130 is connected to the mounting base 170 and can rotate relative to the mounting base 170 around a first axis a, and the first axis a is perpendicular to the first light path and the second light path. In this way, the motion trajectory of the positioning adjustment component 130 driving the mounting base 170 to rotate can be in an arc shape, which can avoid the eccentric rotation of the positioning adjustment component 130, thereby avoiding the elliptical setting of the motion trajectory of the positioning adjustment component 130, ensuring that when the positioning adjustment component 130 rotates relative to the mounting base 170, the distance between the two can be kept equal, thereby improving the controllability of the adjustment of the positioning adjustment component 130, thereby reducing the difficulty of operating the vehicle-mounted glass HUD imaging detection system 100 and reducing the difficulty of processing the detection data.

[0081] It should be noted that the first axis a is the axis about which the positioning and adjustment assembly 130 rotates. For example, when the positioning and adjustment assembly 130 is rotatably connected to the mounting base 170 via a rotating shaft, the first axis a is the centerline of the rotating shaft.

[0082] In addition, in yet another embodiment, Figure 2 The vehicle-mounted glass HUD imaging detection system 100 also includes a first guide rail assembly 180. The positioning adjustment assembly 130 slides in cooperation with the first guide rail assembly 180. The first guide rail assembly 180 is arranged in a circular arc rail structure, and the center of the circular arc rail structure is located on the first axis a. In this way, the first guide rail assembly 180 provides precise guidance for the movement of the brightness detection assembly 140. The brightness detection assembly 140 can move smoothly along a preset path during the rotation process, avoiding measurement errors caused by shaking or offset, and improving the operational convenience of the vehicle-mounted glass HUD imaging detection system 100.

[0083] Furthermore, the setting of the first guide rail assembly 180 and the center of the circular arc rail structure being located on the first axis a ensure that the brightness detection assembly 140 can rotate around the first axis a, ensuring that the brightness detection assembly 140 can move on the same path during each detection, thereby ensuring the stability and comparability of the measurement results, and thereby improving the reliability of the detection data.

[0084] In conjunction with any embodiment of the positioning adjustment component 130, see Figure 2The positioning and adjustment assembly 130 is provided with a second guide rail assembly 132, and the brightness detection assembly 140 slides in engagement with the second guide rail assembly 132 to adjust the spacing between the brightness detection assembly 140 and the vehicle glass 200. In this manner, the sliding engagement of the second guide rail assembly 132 enables precise control of the spacing between the brightness detection assembly 140 and the vehicle glass 200. In one example, by adjusting the spacing between the brightness detection assembly 140 and the vehicle glass 200, the primary and secondary images received by the brightness detection assembly 140 can be made clearer, thereby improving the accuracy of the measurement results.

[0085] In combination with any of the above embodiments of the light adjustment component 120, Figure 6 As shown, the light adjustment component 120 includes a polarization adjustment component 121. The polarization adjustment component 121 has a first state and a second state. When the polarization adjustment component 121 is in the first state, light is separated by the polarization adjustment component 121 and reflected as a first type of polarized light. When the polarization adjustment component 121 is in the second state, light is separated by the polarization adjustment component 121 and reflected as a second type of polarized light.

[0086] It is understood that, generally, the HUD imaging system used with the vehicle glass 200 may include a polarization component to convert the HUD imaging system's outgoing light and ambient light into polarized light for the human eye, thereby achieving a wider viewing angle and improving the display effect. Thus, the provision of the polarization adjustment component 121 in the vehicle glass HUD imaging detection system 100 better suits actual installation scenarios, thereby improving the reliability of test data.

[0087] Optionally, in one embodiment, the polarization direction of the first type of polarized light is perpendicular to the polarization direction of the second type of polarized light.

[0088] In one example, the second type of polarized light may be S polarized light, and the corresponding first type of polarized light may be P polarized light. In another example, the second type of polarized light is P polarized light, and the corresponding first type of polarized light is S polarized light.

[0089] It should be noted that the switching between the first state and the second state in the above embodiment can be achieved by switching different polarizers or by changing the incident angle of polarized light, etc., and no further limitation is imposed here.

[0090] In one embodiment, the polarized light adjustment assembly 121 includes a first optical structure and a second optical structure. The first optical structure includes a first optical plate and a first polarizing reflective film. The first polarizing reflective film is capable of separating and reflecting a first type of polarized light. In one example, the first polarizing reflective film can reflect S-polarized light and transmit P-polarized light. Thus, the polarizing reflective film can separate light into P-polarized light and S-polarized light, with the S-polarized light being reflected and the P-polarized light being transmitted. The first polarizing reflective film can be fixedly attached to the first optical plate via a colloid, or it can be fixed to the first optical plate via a process such as embossing or coating, although this application is not limited thereto.

[0091] Accordingly, the second optical structure includes a second light plate and a second polarizing reflective film. Specifically, switching between the first state and the second state can be achieved by rotating or sliding the first and second optical structures. In one example, the second polarizing reflective film can reflect P-polarized light and transmit S-polarized light. Therefore, the polarizing reflective film can separate light into P-polarized light and S-polarized light, with the P-polarized light being reflected and the S-polarized light being transmitted.

[0092] In another example, the second polarizing reflective film can be designed as a semi-transparent and semi-reflective film, that is, the transmittance and reflectance of the optical film are 50%. It can be understood that the reflectance and transmittance of the optical film can also refer to other ratios such as 30%, etc., and no excessive restrictions are imposed here.

[0093] The second polarizing reflective film may be fixedly connected to the second optical plate via colloid; or may be fixed to the second optical plate via a process such as embossing or coating, which is not limited in this application.

[0094] In another embodiment, combined with Figure 6 as well as Figure 7 As shown, the light adjustment component 120 further includes a second angle adjustment component 122, which is connected to the polarization adjustment component 121. The polarization adjustment component 121 also has a third state. When the polarization adjustment component 121 is in the third state, the polarization adjustment component 121 can separate and reflect a third type of polarized light.

[0095] The second angle adjustment component 122 can drive the polarization light adjustment component 121 to rotate relative to the installation axis between the polarization light adjustment component 121 and the light source component 110, so that the incident angle of the light on the polarization light adjustment component 121 can be adjusted, so that the light can be separated and reflected into one of the first type of polarized light, the second type of polarized light and the third type of polarized light after passing through the polarization light adjustment component 121.

[0096] In one example, the first polarized light, the second polarized light, and the third polarized light are all linearly polarized light, and the polarization angle of the third polarized light is between the polarization angle of the first polarized light and the polarization angle of the second polarized light.

[0097] In another example, the first type of polarized light, the second type of polarized light, and the third type of polarized light can be different types of polarized light. For example, the first type of polarized light can be P-polarized light, the second type of polarized light can be S-polarized light, and the third type of polarized light can be circularly polarized light, elliptically polarized light, etc.

[0098] In this way, the second angle adjustment component 122 can drive the polarization light adjustment component 121 to rotate relative to the installation axis of the light source component 110, thereby changing the incident angle of the light on the polarization light adjustment component 121, thereby realizing the switching of the first type of polarized light, the second type of polarized light and the third type of polarized light, and selecting a specific type of polarized light according to actual test requirements, thereby enhancing the flexibility of the vehicle-mounted glass HUD imaging detection system 100.

[0099] Furthermore, by adjusting the incident angle, multiple types of polarized light can be selectively separated, achieving stepless adjustment of polarization types and enriching the test scenarios of the vehicle-mounted glass HUD imaging detection system 100. Furthermore, polarization switching is achieved by rotating the polarization adjustment component 121 via the second angle adjustment component 122, which only requires a single optical component, reducing the number of required optical components and lowering the complexity and cost of the system.

[0100] In some embodiments, see Figure 6 The light adjustment assembly 120 also includes a filter adjustment assembly 123. The filter adjustment assembly 123 includes at least two filters 1231 and a second support bracket 1232. At least two filters 1231 are mounted on the second support bracket 1232, and at least one filter 1231 is rotatably mounted on the second support bracket 1232, enabling the filter adjustment assembly 123 to switch between a single filter state and a superimposed filter state. The filtering parameters of the at least two filters 1231 can be consistent or inconsistent.

[0101] When the filter adjustment assembly 123 is in the single-filtering state, one filter 1231 is positioned along the first light path, while the remaining filters are staggered relative to the first light path. This means that only the filtering characteristics of filter 1231 affect the light, while the other filters 1231 have no additional effect. This makes it suitable for test scenarios requiring a single filtering characteristic. When the filter adjustment assembly 123 is in the superimposed filtering state, at least two filters are positioned along the first light path. This means that light passes through multiple filters 1231 sequentially, with each filter 1231 filtering the light. This makes it suitable for test scenarios requiring complex spectral screening or more precise light intensity modulation.

[0102] In an example scenario, if all filters 1231 have the same filtering parameters, then in the superimposed filtering state, the transmittance will be the product of the transmittances of the individual filters 1231. For example, if the transmittance of each filter 1231 is 50%, then the transmittance of the two filters 1231 superimposed is 25%. This allows the filter assembly to gradually reduce light intensity or enhance filtering effects when in the superimposed filtering state.

[0103] In another example scenario, the filtering parameters of multiple filters 1231 are inconsistent, and the filtering parameter ranges of at least two filters 1231 overlap. For example, if the filtering range of filter 1231 is between 525nm and 575nm, and the filtering range of filter 1232 is between 540nm and 600nm, then the overlapping portion of filter 1231 and filter 1231 after superposition is between 540nm and 575nm. That is, the light passing through filter 1231 and filter 1231 can filter out light with a wavelength of 540nm to 575nm.

[0104] That is, in this embodiment, the single-filter state and the superimposed-filter state can be switched by rotation, meeting the light requirements of different test scenarios and enriching the test scenarios of the vehicle-mounted glass HUD imaging detection system 100. Furthermore, through simple rotation switching, the integration performance of the vehicle-mounted glass HUD imaging detection system 100 can be improved on the one hand, and the difficulty of testing operations can be reduced on the other.

[0105] Furthermore, in one embodiment, Figure 6The filter adjustment component 123 also includes at least one light attenuation plate 1233, which can be rotatably set on the second supporting bracket 1232, so that the light attenuation plate 1233 can be rotated and switched between being set on the first light path and being set staggered with the first light path. Among them, the light attenuation plate 1233 is mainly used to adjust the light intensity, and reduces the light intensity by absorbing or scattering part of the light. Furthermore, when the light attenuation plate 1233 is in the first light path, the light will pass through the light attenuation plate 1233, and the light intensity will be reduced, which is suitable for scenes where the light intensity needs to be reduced. When the light attenuation plate 1233 is staggered with the light path, the light will not pass through the light attenuation plate 1233, and the light intensity will not be reduced, which is suitable for scenes where the original light intensity needs to be maintained.

[0106] In this way, by rotating the light attenuation plate 1233, the operator can dynamically adjust the light intensity as needed, so that it can adapt to different light intensity requirements without frequently replacing the filter 1231 or adjusting the light source assembly 110, thereby improving the operational convenience of the vehicle-mounted glass HUD imaging detection system 100.

[0107] Optionally, in one embodiment, the light source assembly 110, polarization adjustment assembly 121, filter adjustment assembly 123, and vehicle glass 200 are sequentially arranged along the first light path. This reduces scattered light by first using the polarization adjustment assembly 121, and then filters 1231 to filter light of a specific frequency. This can reduce light scattering and noise, enhance the stability of the optical signal, improve imaging quality, and thus improve detection accuracy.

[0108] In another embodiment, see Figure 6 The light conditioning assembly 120 also includes a grating assembly 124. The filter conditioning assembly 123, grating assembly 124, and vehicle glass 200 are sequentially arranged along the first light path. The grating assembly 124 is used to decompose light into spectral components of different wavelengths. Thus, light first passes through the filter conditioning assembly 123 to select light within a specific wavelength range and remove unwanted frequency components. The grating assembly 124 then decomposes the composite light into monochromatic light, thereby improving the imaging quality of different light frequencies and, consequently, the quality of detection and analysis.

[0109] In other embodiments, the light adjustment assembly 120 may also be provided with other optical components to increase the incident effect of light, thereby improving the imaging quality on the vehicle glass 200 .

[0110] In one embodiment, see Figure 6Light adjustment assembly 120 further includes a diffuser 125, which is disposed between light source assembly 110 and polarized light adjustment assembly 121 and along the first light path. Diffuser 125 thus evenly scatters the light emitted by light source assembly 110, making the light intensity more spatially uniform. This reduces light coherence and avoids the generation of light spots and streaks. Furthermore, uniform light intensity distribution reduces light intensity fluctuations, thereby reducing noise, improving imaging quality, and ultimately enhancing detection accuracy.

[0111] In another embodiment, see you Figure 6 The light adjustment assembly 120 further includes an aperture adjustment assembly 126, which is disposed between the light source assembly 110 and the polarized light adjustment assembly 121 and is disposed on the first light path. The aperture adjustment assembly 126 is used to limit the diameter of the light beam, thereby controlling the amount of light transmitted.

[0112] In this way, the aperture adjustment component 126 can block unnecessary light, reduce stray light and background noise, improve imaging quality, and thus improve detection accuracy.

[0113] In some embodiments, such as Figure 2 as well as Figure 6 As shown, the vehicle glass HUD imaging detection system 100 also includes a mounting base 170 and a height adjustment mechanism 190. The mounting base 170 is used to mount the vehicle glass 200. The height adjustment mechanism 190 is used to adjust the height of at least two of the light adjustment component 120, the mounting base 170, and the brightness detection component 140, so that the light source component 110, the light adjustment component 120, and the vehicle glass 200 are on the first light path, and the vehicle glass 200 and the brightness detection component 140 are on the second light path. In this way, through the height adjustment mechanism 190, it is possible to ensure that the light source component 110, the light adjustment component 120, and the vehicle glass 200 are all set on the first light path, and ensure that the vehicle glass 200 and the brightness detection component 140 are on the second light path, thereby determining the optical planes of the first light path and the second light path, which is conducive to reducing light loss and distortion and ensuring detection accuracy.

[0114] It should be noted that the height adjustment mechanism 190 can be an electric push rod assembly, a folding table bracket, etc., and no excessive restrictions are imposed here.

[0115] In combination with any of the above embodiments of the light source assembly 110, Figure 8As shown, the light source assembly 110 includes multiple light source components 111, a rotating switching component 112, and a third supporting bracket 113. The multiple light sources are sequentially spaced along the circumference of the rotating switching component 112. The rotating switching component 112 is rotatably mounted on the third supporting bracket 113 to drive the multiple light source components 111 to rotate, causing a light source component 111 to rotate along the first light path. The multiple light source components 111 differ in at least one of light intensity, saturation, color, and light type.

[0116] This allows for flexible switching of different light source components 111 based on actual needs to meet the requirements of different vehicle glass HUD imaging tests. For example, when testing the same vehicle glass 200, by rotating the switching component 112, light source components 111 with different parameters such as light intensity, saturation, color, or light type can be selected, thereby obtaining multiple sets of test data and improving the accuracy and reliability of the test results.

[0117] It should be noted that the computing module in the above embodiment can be but is not limited to hardware such as CPU, GPU, etc., and can also be implemented through programming and the like to implement the above-mentioned vehicle glass HUD imaging detection method.

[0118] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0119] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0120] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0121] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0122] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A vehicle-mounted glass HUD imaging detection system, characterized in that: The vehicle-mounted glass HUD imaging detection system includes: a light source assembly, the light source assembly being configured to emit light; when the light emitted by the light source assembly is emitted along a first light path onto the vehicle-mounted glass, a primary image and a secondary image are formed on the vehicle-mounted glass; a light adjustment component, the light adjustment component being disposed between the light source component and the vehicle glass along the first light path; a brightness detection assembly, the brightness detection assembly being disposed on the reflective side of the vehicle window along the second light path, the brightness detection assembly being capable of receiving light emitted by the light source assembly and reflected by the vehicle window; the brightness detection assembly being configured to obtain a first brightness value of the primary image and a second brightness value of the secondary image; a positioning adjustment component connected to the brightness detection component; the positioning adjustment component is capable of driving the brightness detection component to rotate relative to the vehicle glass, so that the angle between the second light path and the vehicle glass is adjustable; A calculation module is communicatively connected to the brightness detection component; the calculation module is used to receive the first brightness value and the second brightness value, and determine whether the vehicle glass has poor imaging based on the first brightness value and the second brightness value.

2. The vehicle-mounted glass HUD imaging detection system according to claim 1, characterized in that: The glass HUD imaging detection system also includes a first angle adjustment component; the first angle adjustment component is used to adjust the rotation angle of the vehicle glass so that the angle between the first light path and the second light path is adjustable.

3. The vehicle glass HUD imaging detection system according to claim 1, characterized in that: The vehicle glass HUD imaging detection system includes a mounting base, which is used to mount the vehicle glass; the positioning adjustment component is connected to the mounting base and can rotate relative to the mounting base around a first axis, and the first axis is perpendicular to the first light path and the second light path.

4. The vehicle-mounted glass HUD imaging detection system according to claim 3, characterized in that: The vehicle-mounted glass HUD imaging detection system also includes a first guide rail assembly; the positioning adjustment assembly slides in cooperation with the first guide rail assembly; the first guide rail assembly is arranged in a circular arc rail structure, and the center of the circular arc rail structure is located on the first axis.

5. The vehicle-mounted glass HUD imaging detection system according to claim 1, characterized in that: The positioning and adjustment assembly includes a first bearing bracket and a second guide rail assembly, the first bearing bracket is used to install the brightness detection assembly; the second guide rail assembly is rotatably arranged relative to the vehicle glass to drive the first bearing bracket to rotate relative to the vehicle glass; the first bearing bracket and the second guide rail assembly are slidably matched so that the first bearing bracket drives the brightness detection assembly to slide, so that the distance between the brightness detection assembly and the vehicle glass is adjustable.

6. The vehicle glass HUD imaging detection system according to claim 1, characterized in that: The light adjustment component includes a polarization light adjustment component, and the polarization light adjustment component includes a first state and a second state; when the polarization light adjustment component is in the first state, the light is separated by the polarization light adjustment component and reflects the first type of polarized light; when the polarization light adjustment component is in the second state, the light is separated by the polarization light adjustment component and reflects the second type of polarized light.

7. The vehicle-mounted glass HUD imaging detection system according to claim 6, characterized in that: The light adjustment component further includes a second angle adjustment component connected to the polarization adjustment component; the polarization adjustment component further includes a third state; when the polarization adjustment component is in the third state, the polarization adjustment component is capable of separating and reflecting a third type of polarized light; The second angle adjustment component can drive the polarization light adjustment component to rotate relative to the installation axis between the polarization light adjustment component and the light source component, so that the incident angle of the light on the polarization light adjustment component is adjustable, so that the polarization light adjustment component can switch between the first state, the second state and the third state.

8. The vehicle-mounted glass HUD imaging detection system according to claim 6, characterized in that: The light adjustment assembly further includes a filter adjustment assembly; the filter adjustment assembly includes at least two filters and a second supporting bracket; the at least two filters are mounted on the second supporting bracket, and at least one of the filters is rotatably mounted on the second supporting bracket, so that the filter adjustment assembly can switch between a single filter state and a superimposed filter state; When the filter adjustment component is in the single filtering state, one filter is set on the first light path, and the other filters are staggered with the first light path; when the filter adjustment component is in the superimposed filtering state, at least two filters are set on the first light path.

9. The vehicle-mounted glass HUD imaging detection system according to claim 8, characterized in that: The light filtering adjustment component also includes at least one light attenuation plate, which can be rotatably arranged on the second supporting bracket, so that the light attenuation plate can be rotated and switched between being arranged on the first light path and being arranged staggered with the first light path.

10. The vehicle glass HUD imaging detection system according to claim 9, characterized in that: The light source assembly, the polarized light adjustment assembly, the light filtering adjustment assembly and the vehicle-mounted glass are sequentially arranged on the first light path.

11. The vehicle glass HUD imaging detection system according to claim 10, characterized in that: The light adjustment component further includes a grating component. The light filtering adjustment component, the grating component and the vehicle-mounted glass are sequentially arranged on the first light path.

12. The vehicle glass HUD imaging detection system according to claim 6, characterized in that: The light adjustment component further includes a diffusion sheet, which is arranged between the light source component and the polarized light adjustment component, and the diffusion sheet is arranged on the first light path; And / or, the light adjustment component further includes an aperture adjustment component, the aperture adjustment component is arranged between the light source component and the polarized light adjustment component, and the aperture adjustment component is arranged on the first light path.

13. The vehicle glass HUD imaging detection system according to claim 1, characterized in that: The vehicle glass HUD imaging detection system also includes a height adjustment mechanism and a mounting base; the mounting base is used to install the vehicle glass; the height adjustment mechanism is used to adjust the height of at least two of the light adjustment component, the mounting base and the brightness detection component, so that the light source component, the light adjustment component and the vehicle glass are on the first light path, and the vehicle glass and the brightness detection component are on the second light path.

14. A vehicle glass HUD imaging detection method, characterized in that: The vehicle-mounted glass HUD imaging detection method includes: Turning on the light source assembly so that an image is formed on the vehicle glass to form a main image and a secondary image; Adjust the positioning adjustment component so that the brightness detection component can collect the brightness values of the main image and the sub-image respectively; record the brightness value corresponding to the main image as the first brightness value K1, and record the brightness value corresponding to the sub-image as the second brightness value K2: Judge whether there is poor imaging of the vehicle-mounted glass according to the collected brightness values; when K2 / K1 < m, the calculation module judges that there is no poor imaging of the vehicle-mounted glass; otherwise, the calculation module judges that there is poor imaging of the vehicle-mounted glass; where m is a preset value.

15. The vehicle-mounted glass HUD imaging detection method according to claim 14, wherein The vehicle-mounted glass HUD imaging detection method further includes: Obtain the detection angle parameter; According to the angle adjustment model, obtain the rotation angle parameter corresponding to the detection angle parameter; Drive the vehicle-mounted glass to rotate according to the rotation angle parameter so that the included angle between the first optical path and the second optical path is the detection angle parameter.

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