Vehicle lamp sunlight focusing test device and detection method thereof

Abstract

The invention provides a vehicle lamp sunlight focusing test device and a detection method thereof, and relates to the technical field of vehicle part testing. The system comprises an optical system, a lamp test platform, a light intensity detection module, a light intensity adjusting module and a control module, the optical system is used for receiving natural sunlight, converting the natural sunlight into parallel test light beams with enhanced illumination intensity and outputting the parallel test light beams to a lamp to be tested, and the lamp test platform is used for installing the lamp to be tested. The light intensity detection module is used for detecting the illumination intensity of parallel test light beams irradiated on the lamp to be tested, the light intensity adjustment module is linked with the optical system to adjust the illumination intensity of the parallel test light beams, and the control module is in communication connection with the lamp test platform, the light intensity detection module and the light intensity adjustment module. The test device can utilize real sunlight, realizes stable and reliable automatic test through optical enhancement and dynamic control, gets rid of weather limitation, and is stable, controllable, comprehensive and efficient in test condition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle component testing, and in particular to a vehicle lamp sunlight focusing test device and a detection method thereof. BACKGROUND

[0002] For the front combination lamp of the existing automobile, in order to pursue excellent light type and brightness, and at the same time to be a standard part for use in various vehicle models, a lens module is usually used for light convergence and shaping. However, the lens module is equivalent to a convex lens in optical principle, and when the vehicle is exposed to strong sunlight outdoors, the lens will converge the sunlight inside the lamp, forming a high-energy focal point or light spot. The focal point temperature is extremely high enough to cause the plastic parts inside the lamp to melt, deform or even catch fire, which is commonly known as "burning lamp".

[0003] In order to avoid such risks in the product development stage, the following methods are mainly used in the prior art to test the sunlight focusing resistance of the vehicle lamp.

[0004] The first method is computer-aided simulation analysis. Before the lamp is opened, a sunlight focusing CAE analysis is performed to avoid focusing and light spots as much as possible. However, due to the influence of the appearance design, if all focusing and light spots are avoided according to the ideal situation, the appearance effect will be greatly limited. Therefore, in many cases, there are light spots on the front combination lamp parts, and the pre-stage CAE analysis simulates the sunlight focusing under reasonable parameters to conclude that the lamp will not be burned by focusing. However, in fact, every summer, there are still many sunlight focusing and burning lamps on the market. Therefore, there is often a deviation between the pre-stage simulation analysis result and the actual situation, and the burning lamp problem that may occur in actual use cannot be completely predicted.

[0005] The second method is to directly place the trial lamp sample under the sun outdoors for irradiation. The defect of this method is that the test conditions are highly dependent on natural weather and seasons. Usually, only under the harsh conditions of extremely high temperature (such as an environment temperature of 38℃ or above) and extremely high light intensity (such as an irradiance of 1300W / m 2 The above), the test is effective. However, such extreme weather conditions occur very rarely in a year, resulting in a long test period and rare opportunities, which seriously restricts the product development and iteration speed.

[0006] The third method is laboratory artificial light source simulation test, that is, artificial light sources such as LED lamps, halogen lamps or xenon lamps are used to simulate sunlight. However, the spectrum of these artificial light sources is usually a non-continuous spectrum, and the spectral energy distribution, color temperature and other key optical characteristics thereof are different from those of real sunlight. Therefore, the test results based on such simulated light sources are questionable in terms of authenticity and reliability, and cannot completely replace the test under real sunlight environment.

[0007] In summary, the prior art lacks an automated testing means that can utilize the real solar spectrum, be free from weather condition restrictions, and stably reproduce extreme working conditions. SUMMARY

[0008] The present application aims to provide a vehicle lamp sunlight focusing test device and a detection method thereof to solve the technical problems in the prior art. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A vehicle lamp sunlight focusing test device, comprising: An optical system for receiving natural sunlight and converting the natural sunlight into a parallel test light beam with enhanced illumination intensity, and outputting the parallel test light beam to a lamp to be tested; A lamp test platform for installing the lamp to be tested; An optical intensity detection module for detecting the illumination intensity of the parallel test light beam irradiating on the lamp to be tested; An optical intensity adjustment module linked with the optical system to adjust the illumination intensity of the parallel test light beam; A control module in communication connection with the lamp test platform, the optical intensity detection module, and the optical intensity adjustment module.

[0010] Preferably, the optical system comprises, in sequence along an optical path, a light collection and collimation module, a light beam steering module, a light beam focusing module, and a light beam recollimation module; The light collection and collimation module is used to collect natural sunlight and convert it into a first parallel light beam vertically downward; The light beam steering module is used to change the propagation direction of the first parallel light beam to form a second parallel light beam horizontally; The light beam focusing module is used to converge the second parallel light beam to form a light spot; The light beam recollimation module is connected to the optical intensity adjustment module, and the light beam recollimation module is used to convert the converged light beam into the parallel test light beam.

[0011] Preferably, the optical intensity adjustment module comprises a sliding rail and a moving motor, the length direction of the sliding rail is parallel to the parallel test light beam, the top of the sliding rail is provided with a rack, the moving motor is in communication connection with the control module, the motor base of the moving motor is connected with the light beam recollimation module, the output shaft of the moving motor is provided with a gear tooth, and the gear tooth is in meshing connection with the rack.

[0012] Preferably, the lamp testing platform comprises a base, a left-right rotating assembly, an up-down rotating assembly and a fixing tool, the lamp to be tested is installed on the fixing tool, the fixing tool is connected with the up-down rotating assembly, the up-down rotating assembly can drive the fixing tool and the lamp to be tested to swing in a vertical plane, the up-down rotating assembly is connected with the left-right rotating assembly, the left-right rotating assembly can drive the up-down rotating assembly, the fixing tool and the lamp to be tested to rotate in a horizontal plane, the left-right rotating assembly is connected with the base, and the left-right rotating assembly and the up-down rotating assembly are both in communication connection with the control module.

[0013] Preferably, the left-right rotating assembly comprises a left-right rotating motor, a left-right rotating shaft and a left-right rotating platform, the up-down rotating assembly comprises an up-down rotating motor, an up-down rotating shaft and an up-down rotating platform, the left-right rotating shaft is connected with the left-right rotating motor and the left-right rotating platform respectively, the up-down rotating shaft is connected with the up-down rotating platform and both ends of the up-down rotating shaft are movably connected with the left-right rotating platform, one end of the up-down rotating shaft extends outward and is meshed and connected with the output shaft of the up-down rotating motor, and the left-right rotating motor and the up-down rotating motor are both in communication connection with the control module.

[0014] Preferably, the light collection and collimation module comprises a first support and a first Fresnel lens horizontally installed on the first support.

[0015] Preferably, the light beam steering module comprises a second support and a mirror installed on the second support, the mirror is located below the first Fresnel lens and has an inclination angle of 45°.

[0016] Preferably, the light beam focusing module comprises a third support and a second Fresnel lens vertically installed on the third support.

[0017] Preferably, the light beam recollimation module comprises a fourth support and a third Fresnel lens vertically installed on the fourth support, the third Fresnel lens has an outer diameter smaller than that of the second Fresnel lens, and the fourth support is connected with the light intensity adjusting module.

[0018] A detection method of a vehicle lamp sunlight focusing test device, applied to the vehicle lamp sunlight focusing test device, comprising: setting a preset light intensity range, the preset light intensity range comprising a preset lower limit and a preset upper limit; the light intensity detection module continuously detects the real-time light intensity of the parallel test light beam, and the control module compares the real-time light intensity with the preset light intensity range; when the real-time light intensity is lower than the preset lower limit, the control module controls the light intensity adjusting module to enhance the light intensity of the parallel test light beams; when the real-time light intensity is higher than the preset lower limit, the lamp test platform drives the to-be-tested lamps to rotate according to a preset track; when the real-time light intensity is higher than the preset upper limit, the control module controls the light intensity adjusting module to weaken the light intensity of the parallel test light beams.

[0019] The present application has the advantages that: by directly using natural sunlight as a light source and using an optical system to enhance the light intensity, the optical characteristics of the sunlight are completely retained, the authenticity and reliability of the test results are ensured, and the problem of spectral distortion of artificial light sources is overcome.

[0020] By using an optical system to enhance ordinary natural sunlight to a light intensity sufficient to simulate extreme weather, the test is no longer restricted by seasons and weather conditions, and can be performed on any sunny day, thereby greatly shortening the test period and improving the research and development and test efficiency.

[0021] By cooperation of the light intensity detecting module, the light intensity adjusting module and the control module, the light intensity of the test light beams is monitored and automatically adjusted in real time, and is accurately and stably kept in a preset target range, the influence of natural light intensity fluctuation on the test results is eliminated, and the consistency and repeatability of the test conditions are ensured.

[0022] By using the lamp test platform to perform omnibearing and multi-angle testing on the lamps, all potential dangerous irradiation angles are covered, the test process is more comprehensive and efficient, and human errors are effectively avoided. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 is a structural diagram of the present application; Figure 2 is a light path structure diagram of the optical system of the present application; Figure 3 is a combined structure diagram of the light beam recollimation module and the light intensity adjusting module of the present application; Figure 4 is a perspective structure diagram of the lamp test platform of the present application; Figure 5A side view structure diagram of the lamp test platform of the present application; Figure 6 A sectional view structure diagram of the lamp test platform of the present application; 1, light collection collimation module; 11, first support; 12, first Fresnel lens; 2, light beam steering module; 21, second support; 22, reflector; 3, light beam focusing module; 31, third support; 32, second Fresnel lens; 4, light beam recollimation module; 41, fourth support; 42, third Fresnel lens; 5, lamp test platform; 51, base; 52, left-right rotation assembly; 521, left-right rotation motor; 522, left-right rotation shaft; 523, left-right rotation platform; 53, up-down rotation assembly; 531, up-down rotation motor; 532, up-down rotation shaft; 533, up-down rotation platform; 54, fixed tooling; 6, light intensity adjustment module; 61, slide rail; 62, moving motor; 7, lamp to be tested; 8, workbench top. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like indicate the orientation or positional relationship based on the drawings shown, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Figure 1 The orientation or positional relationship shown is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] With reference to Figure 1 The present application provides a vehicle lamp sunlight focusing test device, comprising an optical system, a lamp test platform 5, a light intensity detection module, a light intensity adjustment module 6 and a control module.

[0028] The optical system is used to receive natural sunlight and convert the natural sunlight into a parallel test light beam with enhanced light intensity, and output the parallel test light beam to the lamp to be tested 7; the lamp test platform 5 is used to install the lamp to be tested 7; the light intensity detection module is used to detect the light intensity of the parallel test light beam irradiated on the lamp to be tested 7; the light intensity adjustment module 6 is linked with the optical system to adjust the light intensity of the parallel test light beam; the control module is in communication connection with the lamp test platform 5, the light intensity detection module and the light intensity adjustment module 6.

[0029] The vehicle lamp sunlight focusing test device can utilize real natural sunlight, increase the light intensity through the optical system, adjust the light intensity through the light intensity adjustment module 6, stably simulate the high-intensity light conditions under extreme weather, and realize the automatic multi-angle scanning of the lamp to be tested 7 through the lamp test platform 5, so as to reliably and comprehensively perform the sunlight focusing test on the lamp to be tested 7 such as automobile front combination lamp.

[0030] Specifically, the optical system comprises a light collection collimation module 1, a light beam turning module 2, a light beam focusing module 3 and a light beam recollimation module 4 arranged in sequence along the optical path, and it can be understood that, Figure 2 The propagation path and transformation process of light inside the optical system are shown.

[0031] The light collection collimation module 1 is used to collect natural sunlight and convert it into a first parallel light beam vertically downward. In the present embodiment, the light collection collimation module 1 preferably comprises a first support 11 and a first Fresnel lens 12 horizontally mounted on the top of the first support 11. The first Fresnel lens 12 can be further preferably a large Fresnel lens.

[0032] The first Fresnel lens 12 can collect a large area of incident sunlight from the sky, which can be approximated as parallel light, and convert it into a first parallel light beam that is vertically downward. In fact, although the angle of the sunlight will change over time, it can always be converted into a first parallel light beam that is vertically downward when it strikes the first Fresnel lens 12.

[0033] In addition, by using a Fresnel lens, the weight and thickness of the lens can be significantly reduced while maintaining a large aperture, thereby reducing the structural load requirements and manufacturing costs of the entire device.

[0034] The beam steering module 2 is used to change the propagation direction of the first parallel light beam to form a second parallel light beam that is horizontally transmitted. In this embodiment, the beam steering module 2 preferably includes a second support 21 and a mirror 22 mounted on the second support 21, and the mirror 22 is located below the first Fresnel lens 12 and has an inclination angle of 45°. The mirror 22 can be further preferably a large mirror.

[0035] The reflecting surface of the mirror 22 is opposite to the first parallel light beam, so that the propagation direction of the first parallel light beam that is vertically downward can be changed by 90 degrees to become a second parallel light beam that is horizontally transmitted. This design allows the remaining main part of the optical system to be arranged horizontally, which is beneficial to the overall structural stability and spatial layout of the device.

[0036] The beam focusing module 3 is used to converge the second parallel light beam to form a light spot. In this embodiment, the beam focusing module 3 preferably includes a third support 31 and a second Fresnel lens 32 vertically mounted on the third support 31. The second Fresnel lens 32 can be further preferably a large Fresnel lens.

[0037] The second Fresnel lens 32 is located in the light path direction of the mirror 22 and is used to receive the second parallel light beam that is horizontally transmitted. The function of the second Fresnel lens 32 is to converge the large-area second parallel light beam to form a light spot with high energy concentration near its focal point, thereby forming a convergent light beam. Through this step of energy convergence, the illumination intensity of the sunlight spot is improved, and the solar energy density is enhanced.

[0038] The beam collimation module 4 is connected to the light intensity adjustment module 6, and the beam collimation module 4 is used to convert the converged light beam into a parallel test light beam. In this embodiment, the beam collimation module 4 includes a fourth support 41 and a third Fresnel lens 42 vertically mounted on the fourth support 41, and the fourth support 41 is connected to the light intensity adjustment module 6. The outer diameter of the third Fresnel lens 42 is smaller than that of the second Fresnel lens 32, and therefore the third Fresnel lens 42 is further preferably a medium-sized Fresnel lens.

[0039] The third Fresnel lens 42 is located in the light path direction of the second Fresnel lens 32, and the center point thereof corresponds to the focal point of the second Fresnel lens 32. The third Fresnel lens 42 is used to reconvert the already converged light beam into a parallel light beam, forming a parallel test light beam finally used for testing.

[0040] When the sun spot intensity reaches a certain height, the sun spot will pass through the third Fresnel lens 42, and the collected sun spot will be converted into a parallel test light beam to irradiate the lamp to be tested 7 on the lamp test platform 5, and the sun light focusing experiment is carried out.

[0041] Due to the focusing and collimation process of the light, the cross-sectional area of the output parallel test light beam is smaller than that of the initial collected light, but the illumination intensity is significantly enhanced, thereby achieving the purpose of simulating extreme high light intensity conditions.

[0042] The light intensity detection module is preferably a photoelectric sensor, and in some embodiments, it can be a high-precision irradiance meter. The light intensity detection module is installed on the lamp test platform 5, and the specific installation position thereof is preferably close to the lamp to be tested 7 and directly opposite the direction of the parallel test light beam. The light intensity detection module is used to detect the illumination intensity of the parallel test light beam irradiated on the lamp to be tested 7 in real time and continuously, and the detected real-time illumination intensity value is fed back to the control module in the form of an electrical signal.

[0043] The control module in this embodiment can be a microprocessor, a programmable logic controller or an industrial computer, which can be communicatively connected with the lamp test platform 5, the light intensity detection module and the light intensity adjustment module 6 through electrical signals. The control module can also be equipped with a user interface to allow the tester to set the preset light intensity range and other key test parameters.

[0044] Referring to Figure 3 The light intensity adjustment module 6 includes a slide rail 61 and a moving motor 62. The number of slide rails 61 is two, and the two slide rails 61 are parallel and spaced apart. The top of the slide rail 61 is provided with a rack, and the length direction of the slide rail 61 is parallel to the direction of the parallel test light beam.

[0045] The moving motor 62 is communicatively connected with the control module. The motor base of the moving motor 62 is connected with the fourth support 41 of the light beam collimation module 4. The output shaft of the moving motor 62 is provided with a gear tooth, which is engaged with the rack at the top of the slide rail 61. After the moving motor 62 is started, the gear tooth can move relative to the rack. Under the driving of the two moving motors 62, the fourth support 41 and the third Fresnel lens 42 can be accurately driven to move back and forth along the optical axis direction.

[0046] Referring to Figures 4 to 6The lamp testing platform 5 comprises a base 51, a left-right rotating assembly 52, an up-down rotating assembly 53 and a fixing tool 54.

[0047] The base 51 can serve as a supporting foundation of the lamp testing platform 5.

[0048] The left-right rotating assembly 52 comprises a left-right rotating motor 521, a left-right rotating shaft 522 and a left-right rotating platform 523. The left-right rotating motor 521 is located inside the base 51. The left-right rotating shaft 522 passes through the base 51 and is movably connected with the base 51. The two ends of the left-right rotating shaft 522 are connected with the left-right rotating motor 521 and the left-right rotating platform 523 respectively.

[0049] The up-down rotating assembly 53 comprises an up-down rotating motor 531, an up-down rotating shaft 532 and an up-down rotating platform 533. The up-down rotating shaft 532 is connected with the up-down rotating platform 533 and the two ends of the up-down rotating shaft 532 are movably connected with the left-right rotating platform 523. The up-down rotating shaft 532 can rotate synchronously with the up-down rotating platform 533. One end of the up-down rotating shaft 532 extends outward and is meshed with the output shaft of the up-down rotating motor 531. The up-down rotating motor 531 is connected with the left-right rotating platform 523.

[0050] The to-be-tested lamp 7 is installed on the fixing tool 54, and the fixing tool 54 is connected with the up-down rotating assembly 53.

[0051] The left-right rotating assembly 52 can drive the up-down rotating assembly 53, the fixing tool 54 and the to-be-tested lamp 7 to rotate in a horizontal plane. Specifically, under the drive of the left-right rotating motor 521, the left-right rotating shaft 522 rotates around a vertical-to-ground rotating axis, so as to simulate the change of sunlight in an azimuth angle.

[0052] The up-down rotating assembly 53 can drive the fixing tool 54 and the to-be-tested lamp 7 to swing in a vertical plane. Specifically, under the drive of the up-down rotating motor 531, the up-down rotating shaft 532 rotates around a second rotating axis parallel to the ground, so as to simulate the change of sunlight in a pitch angle.

[0053] The left-right rotating motor 521 of the left-right rotating assembly 52 and the up-down rotating motor 531 of the up-down rotating assembly 53 are in communication connection with the control module. Accordingly, through the coordinated control of the left-right rotating motor 521 and the up-down rotating motor 531, the control module can drive the to-be-tested lamp 7 to complete the positioning and continuous scanning at any angle in the horizontal and pitch dimensions.

[0054] In the actual setting process, the light collection collimation module 1, the light beam turning module 2, the light beam focusing module 3, the lamp testing platform 5 and the light intensity adjusting module 6 are arranged on the workbench 8, and the left and right rotating motors 521 of the lamp testing platform 5 are also fixed on the workbench 8.

[0055] The application further provides a detection method of the vehicle lamp sunlight focusing test device. The preset light intensity range includes a preset lower limit and a preset upper limit. The light intensity detection module continuously detects the real-time light intensity of the parallel test light beam, and the control module compares the real-time light intensity with the preset light intensity range. When the real-time light intensity is lower than the preset lower limit, the control module controls the light intensity adjusting module 6 to enhance the light intensity of the parallel test light beam. When the real-time light intensity is higher than the preset lower limit, the lamp testing platform 5 drives the lamp to be tested 7 to rotate according to the preset track. When the real-time light intensity is higher than the preset upper limit, the control module controls the light intensity adjusting module 6 to weaken the light intensity of the parallel test light beam.

[0056] Specifically, before the test starts, the operator can set the preset light intensity range, which can be an interval including a preset lower limit and a preset upper limit. 2 2 To simulate the extreme light in the summer.

[0057] Meanwhile, the operator can also set the scanning track of the lamp testing platform 5, for example, the control module can control the up and down rotating motor 531 to complete 0-90-0 back and forth within 24 minutes, and the left and right rotating motor 521 to rotate 1 degree to the left or right within 24 minutes, and so on, when the up and down rotating motor 531 completes 0-90-0 back and forth for 90 times, and the left and right rotating motor 521 rotates to 90 degrees to the left or right, a complete scanning track is formed, and the lamp to be tested 7 completes the sunlight focusing test.

[0058] In order to accurately make the sunlight light intensity reach 1300W / m 2 , the light intensity detection module continuously detects the light intensity of the sunlight, and the control module compares the real-time light intensity with the preset light intensity range.

[0059] ​The smaller the light spot, the higher the illumination intensity of the sunlight; the larger the light spot, the lower the illumination intensity of the sunlight. The light spot size irradiated on the lens can be changed by moving the third Fresnel lens 42, so as to adjust the illumination intensity irradiated on the to-be-tested lamp 7.

[0060] When the detected sunlight illumination intensity is less than 1200W / m 2 , the light intensity detection module sends a signal to the control module, and the control module controls the fourth support 41 and the third Fresnel lens 42 to move in the direction of reducing the light spot size by driving the moving motor 62, so as to increase the sunlight illumination intensity. When the third Fresnel lens 42 moves in the direction of reducing the light spot size, the detected sunlight illumination intensity always cannot reach 1200W / m 2 , the device stops working; When the detected sunlight illumination intensity reaches 1200W / m 2 , the control module controls the lamp test platform 5 to drive the to-be-tested lamp 7 to rotate according to a preset track.

[0061] When the detected sunlight illumination intensity is greater than 1400W / m 2 , the light intensity detection module sends a signal to the control module, and the control module controls the fourth support 41 and the third Fresnel lens 42 to move in the direction of increasing the light spot size by driving the moving motor 62, so as to reduce the sunlight illumination intensity.

[0062] When the detected sunlight illumination intensity is between 1200W / m 2 and 1400W / m 2 , the light intensity detection module sends a signal to the control module, and the control module controls the fourth support 41 and the third Fresnel lens 42 to remain stationary after receiving the signal, so as to control the illumination intensity irradiated on the to-be-tested lamp 7 to remain between 1200W / m 2 and 1400W / m 2 .

[0063] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vehicle headlight sunlight focusing test device, characterized in that, include: An optical system is used to receive natural sunlight and convert it into a parallel test beam with enhanced light intensity, and output the parallel test beam to the lamp under test; A lighting test platform for mounting the lighting fixture under test; A light intensity detection module is used to detect the light intensity of the parallel test beam illuminating the lamp under test. An intensity adjustment module, linked to the optical system, adjusts the illumination intensity of the parallel test beam. The control module is communicatively connected to the lighting test platform, the light intensity detection module, and the light intensity adjustment module.

2. The vehicle headlight sunlight focusing test device according to claim 1, characterized in that, The optical system includes a light collection and collimation module, a beam steering module, a beam focusing module, and a beam recollimation module arranged sequentially along the optical path. The light-collecting collimation module is used to collect natural sunlight and convert it into a first parallel beam that is vertically downward. The beam steering module is used to change the propagation direction of the first parallel beam to form a horizontal second parallel beam. The beam focusing module is used to converge the second parallel beam to form a light spot; The beam recollimation module is connected to the beam intensity adjustment module, and the beam recollimation module is used to convert the converged beam into the parallel test beam.

3. The vehicle headlight sunlight focusing test device according to claim 2, characterized in that, The light intensity adjustment module includes a slide rail and a moving motor. The length direction of the slide rail is parallel to the parallel test beam. A rack is provided on the top of the slide rail. The moving motor is communicatively connected to the control module. The motor mount of the moving motor is connected to the beam re-collimation module. The output shaft of the moving motor is provided with teeth, which mesh with the rack.

4. The vehicle headlight sunlight focusing test device according to claim 1, characterized in that, The lighting test platform includes a base, a left-right rotating assembly, a right-up rotating assembly, and a fixed fixture. The lighting fixture under test is mounted on the fixed fixture, which is connected to the right-up rotating assembly. The right-up rotating assembly can drive the fixed fixture and the lighting fixture under test to swing in a vertical plane. The right-up rotating assembly is connected to the left-right rotating assembly, which can drive the right-up rotating assembly, the fixed fixture, and the lighting fixture under test to rotate in a horizontal plane. The left-right rotating assembly is connected to the base, and both the left-right rotating assembly and the right-up rotating assembly are communicatively connected to the control module.

5. The vehicle headlight sunlight focusing test device according to claim 4, characterized in that, The left and right rotation assembly includes a left and right rotation motor, a left and right rotation shaft, and a left and right rotation platform. The up and down rotation assembly includes an up and down rotation motor, an up and down rotation shaft, and an up and down rotation platform. The left and right rotation shaft is connected to the left and right rotation motor and the left and right rotation platform, respectively. The up and down rotation shaft is connected to the up and down rotation platform, and both ends of the shaft are movably connected to the left and right rotation platform. One end of the up and down rotation shaft extends outward and meshes with the output shaft of the up and down rotation motor. The left and right rotation motor and the up and down rotation motor are both communicatively connected to the control module.

6. The vehicle headlight sunlight focusing test device according to claim 2, characterized in that, The light-collecting collimation module includes a first bracket and a first Fresnel lens horizontally mounted on the first bracket.

7. The vehicle lamp sunlight focusing test device according to claim 6, characterized in that, The beam steering module includes a second bracket and a reflector mounted on the second bracket. The reflector is located below the first Fresnel lens and has a tilt angle of 45°.

8. The vehicle headlight sunlight focusing test device according to claim 2, characterized in that, The beam focusing module includes a third bracket and a second Fresnel lens mounted vertically on the third bracket.

9. The vehicle lamp sunlight focusing test device according to claim 8, characterized in that, The beam recollimation module includes a fourth bracket and a third Fresnel lens vertically mounted on the fourth bracket. The outer diameter of the third Fresnel lens is smaller than the outer diameter of the second Fresnel lens. The fourth bracket is connected to the beam intensity adjustment module.

10. A testing method for a vehicle lamp sunlight focusing test device, applied to the vehicle lamp sunlight focusing test device according to any one of claims 1-9, characterized in that, include: A preset light intensity range is set, which includes a preset lower limit and a preset upper limit; The light intensity detection module continuously detects the real-time light intensity of the parallel test beam, and the control module compares the real-time light intensity with the preset light intensity range; When the real-time illumination intensity is lower than the preset lower limit, the control module controls the illumination intensity adjustment module to enhance the illumination intensity of the parallel test beam; When the real-time light intensity is higher than the preset lower limit, the lighting test platform drives the lighting fixture under test to rotate according to the preset trajectory; When the real-time illumination intensity is higher than the preset upper limit, the control module controls the illumination intensity adjustment module to reduce the illumination intensity of the parallel test beam.

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