Alignment device and method for the optical axis of a motor vehicle headlamp tester calibrator

Abstract

The application discloses a kind of alignment device and method of motor vehicle headlamp detector calibrator optical axis, including horizontal contour alignment device and isodip surface alignment device;Horizontal contour alignment device includes calibration frame one, locking assembly one and laser component one, by adjusting the position of calibration frame one on the side end surface of calibrator, make the optical axis center line of laser component one with the optical axis center line of calibrator parallel and be located on the same horizontal height;Isodip surface alignment device includes calibration frame two, locking assembly two and laser component two, by adjusting the position of calibration frame two on the top end surface of calibrator, make the optical axis center line of laser component two with the optical axis center line of calibrator parallel and be in the same vertical surface;The application is in the alignment work of motor vehicle headlamp detector calibrator optical axis, whole alignment procedure operation is simple and convenient, one can complete whole operation, reduce cooperation personnel at the same time, reduce alignment preparation work time, to improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of headlight calibration technology, and in particular to an alignment device and method for the optical axis of a motor vehicle headlight tester calibrator. Background Technology

[0002] Currently, the lighting performance and light distribution performance of automotive headlights are crucial for ensuring nighttime driving safety. Vehicles with poor lighting conditions are three times more likely to cause traffic accidents than those with good lighting conditions. Therefore, headlights are required to have specific light patterns and illuminance distributions. The lighting distribution of headlights should maximize illumination of the road and obstacles in front of the vehicle while minimizing the impact on the eyes of oncoming drivers. Currently, countries worldwide have stringent testing requirements for automotive headlights, such as the ECE standard (European standard) and the SAE standard (American standard). my country has also promulgated corresponding national standards (GB4599-1994), which set strict requirements for the light patterns and luminous intensity values ​​of headlights.

[0003] In China, with the rapid development of the automotive industry in recent years, many mid-to-high-end car manufacturers have attached great importance to the testing of key indicators of automotive headlights. The performance indicators of headlight testers are mainly calibrated and verified using headlight tester calibrators. The testing methods for these calibrators are primarily developed by various metrology institutes according to regulations. During the testing process, two parameters need to be measured: luminous intensity and optical axis offset angle. In the verification process of the vehicle headlight tester calibrator, it is essential to ensure that the center of the luminous optical axis of the calibrator is at the same height as the center of the illuminance meter probe. This alignment is a prerequisite for verifying parameters such as luminous intensity and optical axis angle. Currently, a level and theodolite are used to determine the optical geometric center of the calibrator's luminous surface. The method for using a level to determine the alignment of the calibrator's luminous optical axis center with the illuminance meter probe center involves placing the vehicle headlight tester calibrator under test on the rotating platform of the device, first adjusting the angle adjustment knob of the calibrator to zero, and then adjusting the calibrator so that its bulb is centered on the ring. Using a level, aim and adjust repeatedly until the center of the luminous surface of the vehicle headlight tester calibrator is at the same height as the center of the light-receiving surface of the adjusted digital lux meter detector. To determine if the perpendicular lines from the calibrator's luminous axis center to the lux meter probe center are in the same vertical plane, use a theodolite to aim and adjust repeatedly until the apexes of the two light cones of the calibrator's optical axis alignment mechanism are in the same vertical plane as the perpendicular lines from the center of the adjusted digital lux meter detector's light-receiving surface.

[0004] In summary, the current method for aligning the optical axis of a vehicle headlight tester calibrator is characterized by cumbersome procedures, the need for multiple people to work together, and low efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an alignment device and method for the optical axis of a motor vehicle headlight tester calibrator, in order to solve the problems existing in the prior art. In the alignment work of the optical axis of the motor vehicle headlight tester calibrator, the entire alignment process is simple and convenient to operate, and one person can complete the entire operation, reducing the number of assistants and the alignment preparation time, thereby improving work efficiency.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] The present invention provides an alignment device for the optical axis of a motor vehicle headlight tester calibrator, including a horizontal alignment device and a vertical alignment device.

[0008] The horizontal alignment device includes a calibration frame, a locking assembly, and a laser assembly. The laser assembly is fixed to the calibration frame and movably connected to one side end face of the calibrator. By adjusting the position of the calibration frame on the side end face of the calibrator, the optical axis center line of the laser assembly is made parallel to the optical axis center line of the calibrator and located at the same horizontal height. The locking assembly is used to lock the calibration frame onto the calibrator.

[0009] The vertical alignment device includes a second calibration frame, a second locking assembly, and a second laser assembly. The second laser assembly is fixed to the second calibration frame, and the second calibration frame is movably connected to the top surface of the calibrator. By adjusting the position of the second calibration frame on the top surface of the calibrator, the optical axis centerline of the second laser assembly is made parallel to the optical axis centerline of the calibrator, and the laser assembly is in the same vertical plane as the perpendicular line from the optical axis center of the calibrator. The second locking assembly is used to lock the second calibration frame onto the calibrator.

[0010] Preferably, the calibration frame is a T-shaped frame composed of a transverse frame and a longitudinal frame. The locking assembly includes a locking bolt and a locking block. A strip-shaped hole is provided at both ends of the transverse frame of the calibration frame, and a strip-shaped hole is provided at the front end of the longitudinal frame of the calibration frame. Each strip-shaped hole corresponds to a locking bolt. A locking block is provided on the upper, lower, and front end faces of the calibrator. The locking block has a threaded hole that mates with the locking bolt. The locking blocks on the upper and lower ends of the calibrator are symmetrically arranged. The locking bolts in the strip-shaped holes at both ends of the transverse frame of the calibration frame are threadedly connected to the locking blocks on the upper and lower ends of the calibrator, respectively. The locking bolt in the strip-shaped hole at the front end of the longitudinal frame of the calibration frame is threadedly connected to the locking block on the front end face of the calibrator.

[0011] Preferably, the locking block one located at the front end face of the calibrator is further provided with a horizontal center scale line of the laser. The laser assembly one is mounted on the longitudinal frame of the calibration frame one. The horizontal center scale line of the laser is at the same horizontal height as the optical axis center line of the calibrator. The horizontal center scale line of the laser is also at the same horizontal height as the center line of the threaded hole in the locking block one where the horizontal center scale line of the laser is provided, the center line of the longitudinal frame, and the optical axis center line of the laser assembly one.

[0012] Preferably, the second calibration frame is a T-shaped frame composed of a transverse frame and a longitudinal frame. The second locking assembly includes two locking bolts and two locking blocks. A strip-shaped hole is provided at both ends of the transverse frame of the second calibration frame, and a strip-shaped hole is provided at the front end of the longitudinal frame of the second calibration frame. Each strip-shaped hole corresponds to a locking bolt. A locking block is provided on each of the two end faces and the front end face of the calibrator. The locking blocks are provided with threaded holes that mate with the locking bolts. The locking blocks on the two end faces of the calibrator are symmetrically arranged. The locking bolts in the strip-shaped holes at both ends of the transverse frame of the second calibration frame are threadedly connected to the locking blocks on the two end faces of the calibrator. The locking bolts in the strip-shaped holes at the front end of the longitudinal frame of the second calibration frame are threadedly connected to the locking blocks on the front end face of the calibrator.

[0013] Preferably, the locking block two located at the front end face of the calibrator is further provided with a vertical center scale line of the laser. The laser assembly two is installed on the longitudinal frame of the calibration frame two. The vertical center scale line of the laser is located in the same vertical plane as the optical axis center line of the calibrator. The vertical center scale line of the laser is also located in the same vertical plane as the center line of the threaded hole in the locking block two where the vertical center scale line of the laser is provided, the center line of the longitudinal frame, and the optical axis center line of the laser assembly two.

[0014] Preferably, the longitudinal frame of the second calibration frame is further provided with a strip-shaped pointed cone groove, and the two pointed cones of the optical axis alignment mechanism of the calibrator are limited to the pointed cone groove, so that the centerline of the longitudinal frame of the second calibration frame is parallel to the line connecting the two pointed cones.

[0015] Based on the alignment device for the optical axis of the headlight tester calibrator, the present invention also provides a method for aligning the optical axis of the headlight tester calibrator, comprising the following steps:

[0016] 1) Install calibration frame one; align the strip hole at the front end of calibration frame one with the locking block one on the front face of the calibrator, and lock the front end of calibration frame one with locking bolt one; connect locking bolt one to the strip holes at both ends of the horizontal frame of calibration frame one, adjust the horizontal frame of calibration frame one up and down so that the center line of the vertical frame of calibration frame one is in the same horizontal plane as the horizontal center scale line of the laser on the locking block one at the front face of the calibrator, so that the optical axis center line of laser component one is parallel to the optical axis center line of the calibrator and at the same horizontal height, and then lock the locking bolts one at both ends of the horizontal frame of calibration frame one so that the position of the entire calibration frame one will not be offset. At this time, the optical axis center line of laser component one is parallel to the optical axis center line of the calibrator and at the same horizontal height.

[0017] 2) Install calibration frame two; align the strip hole at the front end of calibration frame two with the locking block two on the front face of the calibrator, and lock the front end of calibration frame two with locking bolt two; connect a locking bolt two to the strip hole at each end of the horizontal frame of calibration frame two, adjust the horizontal frame of calibration frame two left and right so that the two sharp cones of the optical axis alignment mechanism of the calibrator are limited in the sharp cone slots, and at the same time make the center line of the longitudinal frame of calibration frame two and the vertical center scale line of the laser on the locking block two at the front face of the calibrator in the same vertical plane, so that the optical axis center line of laser component two is parallel to the optical axis center line of the calibrator and in the same vertical plane, and then lock the locking bolt two at both ends of the horizontal frame of calibration frame two so that the position of the entire calibration frame two will not be offset. At this time, the optical axis center line of laser component two is parallel to the optical axis center line of the calibrator and in the same vertical plane;

[0018] 3) Align the calibrator's optical axis; turn on laser assembly one, projecting its light spot onto the coordinates of the coordinate plate in front. The coordinate plate has coordinate scales, and an illuminance meter probe is installed at the center of the coordinate plate. Based on the position of the center of the light spot projected by laser assembly one and the position of the horizontal center line of the coordinate plate, move the calibrator up and down. The calibrator moves synchronously with laser assembly one, ensuring that the center of the light spot projected by laser assembly one is at the same height as the horizontal center line of the coordinate plate. Since the optical axis center line of laser assembly one and the optical axis center line of the calibrator are parallel and at the same height, the optical axis center line of the calibrator is thus aligned with the center of the illuminance meter probe. Turn on laser assembly two, projecting its light spot onto the coordinates of the coordinate plate in front. Based on the position of the center of the light spot projected by laser component two and the position of the horizontal center line of the coordinate plate, while keeping the vertical position unchanged, the calibrator is moved left and right. The calibrator moves synchronously with laser component two, ensuring that the center of the light spot projected by laser component two is located on the center line of the vertical plumb line of the coordinate plate. Since the optical axis center line of laser component two and the optical axis center line of the calibrator are parallel and located on the same vertical plane, the optical axis center line of the calibrator and the center of the illuminance meter probe are on the same vertical plane. Since the optical axis center line of the calibrator and the center of the illuminance meter probe have been adjusted to be at the same height, the optical axis center line of the calibrator and the center of the illuminance meter probe are now coincident, achieving optical axis alignment of the calibrator.

[0019] The present invention achieves the following beneficial technical effects compared to the prior art:

[0020] The present invention provides an alignment device and method for the optical axis of a motor vehicle headlight tester calibrator. A horizontal alignment device and a vertical alignment device are installed on the calibrator. The center line of the optical axis of laser one on the horizontal alignment device is set to be parallel and at the same height as the center line of the optical axis of the calibrator. The center line of the optical axis of laser two on the vertical alignment device is set to be parallel and vertically aligned with the center line of the optical axis of the calibrator. Laser one and laser two are linked to the calibrator. By adjusting the laser spot sequentially, the center line of the optical axis of the calibrator is aligned with the center of the illuminance meter probe at the same height and on the same vertical plane, thereby achieving alignment of the center of the optical axis of the calibrator. The entire alignment process is simple and convenient to operate, and can be completed by one person, reducing the number of personnel involved and the preparation time for alignment, thus improving work efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the alignment device for the optical axis of the calibrator of the motor vehicle headlight tester in this invention.

[0023] Figure 2 for Figure 1 The main view;

[0024] In the diagram: 1 - Calibrator;

[0025] 11-Calibration frame one; 12-Laser assembly one; 13-Locking bolt one; 14-Locking block one; 15-Laser horizontal center scale line;

[0026] 21-Calibration frame II, 22-Laser assembly II, 23-Locking bolt II, 24-Locking block II, 25-Laser vertical center scale line, 26-Conical slot. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The purpose of this invention is to provide an alignment device and method for the optical axis of a motor vehicle headlight tester calibrator, in order to solve the problems existing in the prior art.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The alignment device for the optical axis of the motor vehicle headlight tester calibrator in this embodiment, such as... Figures 1-2 As shown, it includes a horizontal alignment device and a vertical alignment device.

[0031] The horizontal alignment device includes a calibration frame 11, a locking assembly 1, and a laser assembly 12. The laser assembly 12 is fixed on the calibration frame 11. The calibration frame 11 is movably connected to one side end face of the calibrator 1. By adjusting the position of the calibration frame 11 on the side end face of the calibrator 1, the optical axis center line of the laser assembly 12 is parallel to the optical axis center line of the calibrator 1 and is at the same horizontal height. The locking assembly 1 is used to lock the calibration frame 11 onto the calibrator 1.

[0032] The vertical alignment device includes a second calibration frame 21, a second locking assembly, and a second laser assembly 22. The second laser assembly 22 is fixed on the second calibration frame 21, and the second calibration frame 21 is movably connected to the top surface of the calibrator 1. By adjusting the position of the second calibration frame 21 on the top surface of the calibrator 1, the optical axis center line of the second laser assembly 22 is made parallel to the optical axis center line of the calibrator 1, and is in the same vertical plane as the perpendicular line of the optical axis center of the calibrator 1. The second locking assembly is used to lock the second calibration frame 21 onto the calibrator 1.

[0033] In this specific embodiment, the calibration frame 11 is a T-shaped frame composed of a transverse frame and a longitudinal frame. The locking assembly 1 includes locking bolts 13 and locking blocks 14. A strip-shaped hole is provided at both ends of the transverse frame of the calibration frame 11, and a strip-shaped hole is provided at the front end of the longitudinal frame of the calibration frame 11. Each strip-shaped hole is correspondingly provided with a locking bolt 13. A locking block 14 is provided on the upper end face, lower end face, and front end face of the calibrator 1. 4 is provided with a threaded hole that mates with the locking bolt 13. The locking block 14 on the upper end face of the calibrator 1 is symmetrically arranged with the locking block 14 on the lower end face. The locking bolt 13 in the strip hole at both ends of the transverse frame of the calibration frame 11 is threadedly connected to the locking block 14 on the upper end face and the lower end face of the calibrator 1, respectively. The locking bolt 13 in the strip hole at the front end of the longitudinal frame of the calibration frame 11 is threadedly connected to the locking block 14 on the front end face of the calibrator 1.

[0034] In this specific embodiment, a horizontal center scale line 15 of the laser is also provided on the locking block 14 located at the front end face of the calibrator 1. The laser assembly 12 is installed on the longitudinal frame of the calibration frame 11. The horizontal center scale line 15 of the laser is at the same horizontal height as the optical axis center line of the calibrator 1 on which the horizontal center scale line 15 of the laser is provided. The horizontal center scale line 15 of the laser is also at the same horizontal height as the center line of the threaded hole in the locking block 14, the center line of the longitudinal frame, and the optical axis center line of the laser assembly 12.

[0035] In this specific embodiment, the calibration frame 21 is a T-shaped frame composed of a transverse frame and a longitudinal frame. The locking assembly 2 includes a locking bolt 23 and a locking block 24. A strip hole is provided at both ends of the transverse frame of the calibration frame 21, and a strip hole is provided at the front end of the longitudinal frame of the calibration frame 21. Each strip hole is provided with a corresponding locking bolt 23. A locking block 24 is provided on both sides and the front end face of the calibrator 1. The locking block 24 is provided with a threaded hole that mates with the locking bolt 23. The locking blocks 24 on both sides of the calibrator 1 are symmetrically arranged. The locking bolts 23 in the strip holes at both ends of the transverse frame of the calibration frame 21 are threadedly connected to the locking blocks 24 on both sides of the calibrator 1. The locking bolts 23 in the strip holes at the front end of the longitudinal frame of the calibration frame 21 are threadedly connected to the locking blocks 24 on the front end face of the calibrator 1.

[0036] In this specific embodiment, a vertical center scale line 25 of the laser is also provided on the locking block 24 located at the front end face of the calibrator 1. The laser assembly 22 is installed on the longitudinal frame of the calibration frame 21. The vertical center scale line 25 of the laser and the optical axis center line of the calibrator 1, which is provided with the horizontal center scale line 25 of the laser, are located in the same vertical plane. The vertical center scale line 25 of the laser is also located in the same vertical plane as the center line of the threaded hole in the locking block 24, the center line of the longitudinal frame, and the optical axis center line of the laser assembly 22.

[0037] The longitudinal frame of calibration frame 21 is also provided with a strip-shaped conical groove 26. The two conical points of the optical axis alignment mechanism of calibrator 1 are limited within the conical groove 26, so that the centerline of the longitudinal frame of calibration frame 21 is parallel to the line connecting the two conical points. The conical tips are two conical protrusions provided on the top surface of calibrator 1.

[0038] Based on the above-mentioned alignment device for the optical axis of the motor vehicle headlight tester calibrator, this embodiment also provides a method for aligning the optical axis of the motor vehicle headlight tester calibrator, including the following steps:

[0039] 1) Install calibration frame 11; align the strip hole at the front end of calibration frame 11 with the locking block 14 on the front face of calibrator 1, and lock the front end of calibration frame 11 with locking bolts 13; connect a locking bolt 13 to the strip hole at each end of the horizontal frame of calibration frame 11, adjust the horizontal frame of calibration frame 11 up and down so that the center line of the vertical frame of calibration frame 11 is in the same horizontal plane as the horizontal center scale line 15 of the laser on the locking block 14 at the front face of calibrator 1, so that the optical axis center line of laser component 12 is parallel to the optical axis center line of calibrator 1 and is at the same horizontal height, and then lock the locking bolts 13 at both ends of the horizontal frame of calibration frame 11 so that the position of the entire calibration frame 11 will not be offset. At this time, the optical axis center line of laser component 12 is parallel to the optical axis center line of calibrator 1 and is at the same horizontal height.

[0040] 2) Install calibration frame 21; align the strip hole at the front end of calibration frame 21 with the locking block 24 on the front face of calibrator 1, and lock the front end of calibration frame 21 with locking bolt 23; connect a locking bolt 23 to the strip hole at each end of the horizontal frame of calibration frame 21, adjust the horizontal frame of calibration frame 21 left and right so that the two cones of the optical axis alignment mechanism of calibrator 1 are limited in the cone slot 26, and at the same time make the centerline of the longitudinal frame of calibration frame 21 and the laser vertical center scale line 25 on the locking block 24 at the front face of calibrator 1 in the same vertical plane, so that the optical axis centerline of laser component 22 is parallel to the optical axis centerline of calibrator 1 and in the same vertical plane, and then lock the locking bolts 23 at both ends of the horizontal frame of calibration frame 21 so that the position of the entire calibration frame 21 will not be offset. At this time, the optical axis centerline of laser component 22 is parallel to the optical axis centerline of calibrator 1 and in the same vertical plane.

[0041] 3) Align the optical axis of calibrator 1; turn on laser assembly 12, projecting its light spot onto the coordinates of the coordinate plate in front. The coordinate plate has coordinate scales, and an illuminance meter probe is installed at the center of the coordinate plate. Align the illuminance meter probe with the center of the coordinate plate. Aligning the center of the coordinate plate is equivalent to aligning the illuminance meter probe; based on the position of the center of the light spot projected by laser assembly 12 and the position of the horizontal center line of the coordinate plate, move calibrator 1 up and down. Calibrator 1 moves synchronously with laser assembly 12, ensuring that the center of the light spot projected by laser assembly 12 is at the same height as the horizontal center line of the coordinate plate. Since the optical axis center line of laser assembly 12 is parallel and at the same height as the optical axis center line of calibrator 1, the optical axis center line of calibrator 1 is thus aligned with the center of the illuminance meter probe; turn on laser assembly 22. The laser beam is projected onto the coordinates of the coordinate plate in front. Based on the position of the center of the laser beam projected by laser component 22 and the position of the horizontal center line of the coordinate plate, while keeping the vertical position unchanged, the calibrator 1 is moved left and right. The calibrator 1 moves synchronously with the laser component 22, ensuring that the center of the laser beam projected by laser component 22 is located on the vertical center line of the coordinate plate. Since the optical axis center line of laser component 22 and the optical axis center line of calibrator 1 are parallel and located on the same vertical plane, the optical axis center line of calibrator 1 and the center of the illuminance meter probe are on the same vertical plane. Since the optical axis center line of calibrator 1 and the center of the illuminance meter probe have been adjusted to be at the same height, the optical axis center line of calibrator 1 and the center of the illuminance meter probe are now coincident, achieving optical axis alignment of calibrator 1.

[0042] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. An alignment device for the optical axis of a motor vehicle headlight tester calibrator, characterized in that: Including horizontal alignment devices and vertical alignment devices; The horizontal alignment device includes a calibration frame, a locking assembly, and a laser assembly. The laser assembly is fixed to the calibration frame, and the calibration frame is movably connected to one side end face of the calibrator. By adjusting the position of the calibration frame on the side end face of the calibrator, the optical axis centerline of the laser assembly is made parallel to the optical axis centerline of the calibrator and located at the same horizontal height. The locking assembly is used to lock the calibration frame onto the calibrator. The calibration frame is a T-shaped frame composed of a horizontal frame and a vertical frame. The locking assembly includes a locking bolt and a locking block. A strip hole is provided at each end of the horizontal frame of the calibration frame. The front end of the longitudinal frame of the first calibration frame is provided with a strip-shaped hole, and each strip-shaped hole is provided with a corresponding locking bolt. The upper end face, lower end face and front end face of the calibrator are respectively provided with a locking block. The locking block is provided with a threaded hole that mates with the locking bolt. The locking blocks on the upper end face and the locking blocks on the lower end face of the calibrator are symmetrically arranged. The locking bolts in the strip-shaped holes at both ends of the transverse frame of the first calibration frame are threadedly connected to the locking blocks on the upper end face and the lower end face of the calibrator, respectively. The locking bolt in the strip-shaped hole at the front end of the longitudinal frame of the first calibration frame is threadedly connected to the locking block on the front end face of the calibrator. The vertical alignment device includes a second calibration frame, a second locking assembly, and a second laser assembly. The second laser assembly is fixed to the second calibration frame, and the second calibration frame is movably connected to the top surface of the calibrator. By adjusting the position of the second calibration frame on the top surface of the calibrator, the optical axis centerline of the second laser assembly is made parallel to the optical axis centerline of the calibrator, and the laser assembly is in the same vertical plane as the perpendicular line from the optical axis center of the calibrator. The second locking assembly is used to lock the second calibration frame onto the calibrator.

2. The alignment device for the optical axis of the motor vehicle headlight tester calibrator according to claim 1, characterized in that: The locking block one located at the front end of the calibrator is also provided with a horizontal center scale line of the laser. The laser assembly one is installed on the longitudinal frame of the calibration frame one. The horizontal center scale line of the laser is at the same horizontal height as the optical axis center line of the calibrator. The horizontal center scale line of the laser is also at the same horizontal height as the center line of the threaded hole in the locking block one where the horizontal center scale line of the laser is provided, the center line of the longitudinal frame, and the optical axis center line of the laser assembly one.

3. The alignment device for the optical axis of the motor vehicle headlight tester calibrator according to claim 1, characterized in that: The second calibration frame is a T-shaped frame composed of a horizontal frame and a vertical frame. The second locking assembly includes two locking bolts and two locking blocks. A strip-shaped hole is provided at both ends of the horizontal frame of the second calibration frame, and a strip-shaped hole is provided at the front end of the vertical frame of the second calibration frame. Each strip-shaped hole corresponds to a locking bolt. A locking block is provided on each of the two end faces and the front end face of the calibrator. The locking blocks are provided with threaded holes that mate with the locking bolts. The locking blocks on the two end faces of the calibrator are symmetrically arranged. The locking bolts in the strip-shaped holes at both ends of the horizontal frame of the second calibration frame are threadedly connected to the locking blocks on the two end faces of the calibrator. The locking bolts in the strip-shaped holes at the front end of the vertical frame of the second calibration frame are threadedly connected to the locking blocks on the front end face of the calibrator.

4. The alignment device for the optical axis of the motor vehicle headlight tester calibrator according to claim 3, characterized in that: The locking block two located at the front end of the calibrator is also provided with a vertical center scale line of the laser. The laser assembly two is installed on the longitudinal frame of the calibration frame two. The vertical center scale line of the laser is located in the same vertical plane as the optical axis center line of the calibrator. The vertical center scale line of the laser is also located in the same vertical plane as the center line of the threaded hole in the locking block two, the center line of the longitudinal frame, and the optical axis center line of the laser assembly two.

5. The alignment device for the optical axis of the motor vehicle headlight tester calibrator according to claim 4, characterized in that: The longitudinal frame of the second calibration frame is also provided with a strip-shaped pointed cone groove. The two pointed cones of the optical axis alignment mechanism of the calibrator are limited to the pointed cone groove, so that the center line of the longitudinal frame of the second calibration frame is parallel to the line connecting the two pointed cones.

6. A method for aligning the optical axis of a motor vehicle headlight tester calibrator, using the alignment device for the optical axis of a motor vehicle headlight tester calibrator as described in any one of claims 1-5, characterized in that, Includes the following steps: 1) Install calibration frame one; align the strip hole at the front end of calibration frame one with the locking block one on the front face of the calibrator, and lock the front end of calibration frame one with locking bolt one; connect a locking bolt one to the strip hole at each end of the horizontal frame of calibration frame one, adjust the horizontal frame of calibration frame one up and down so that the center line of the vertical frame of calibration frame one is in the same horizontal plane as the horizontal center scale line of the laser on the locking block one at the front face of the calibrator, so that the optical axis center line of laser component one is parallel to the optical axis center line of the calibrator and at the same horizontal height, and then lock the locking bolts one at both ends of the horizontal frame of calibration frame one so that the position of the entire calibration frame one will not be offset. At this time, the optical axis center line of laser component one is parallel to the optical axis center line of the calibrator and at the same horizontal height. 2) Install calibration frame two; align the strip hole at the front end of calibration frame two with the locking block two on the front face of the calibrator, and lock the front end of calibration frame two with locking bolt two; connect a locking bolt two to the strip hole at each end of the horizontal frame of calibration frame two, adjust the horizontal frame of calibration frame two left and right so that the two pointed cones of the optical axis alignment mechanism of the calibrator are limited in the pointed cone slots, and at the same time make the center line of the longitudinal frame of calibration frame two and the vertical center scale line of the laser on the locking block two at the front face of the calibrator in the same vertical plane, so that the optical axis center line of laser component two is parallel to the optical axis center line of the calibrator and in the same vertical plane, and then lock the locking bolt two at both ends of the horizontal frame of calibration frame two so that the position of the entire calibration frame two will not be offset. At this time, the optical axis center line of laser component two is parallel to the optical axis center line of the calibrator and in the same vertical plane; 3) Align the calibrator's optical axis; turn on laser assembly one, projecting its light spot onto the coordinates of the coordinate plate in front. The coordinate plate has coordinate scales, and an illuminance meter probe is installed at the center of the coordinate plate. Based on the position of the center of the light spot projected by laser assembly one and the position of the horizontal center line of the coordinate plate, move the calibrator up and down. The calibrator moves synchronously with laser assembly one, ensuring that the center of the light spot projected by laser assembly one is at the same height as the horizontal center line of the coordinate plate. Since the optical axis center line of laser assembly one and the optical axis center line of the calibrator are parallel and at the same height, the optical axis center line of the calibrator is thus aligned with the center of the illuminance meter probe. Turn on laser assembly two, projecting its light spot onto the coordinates of the coordinate plate in front. Based on the position of the center of the light spot projected by laser component two and the position of the horizontal center line of the coordinate plate, while keeping the vertical position unchanged, the calibrator is moved left and right. The calibrator moves synchronously with laser component two, ensuring that the center of the light spot projected by laser component two is located on the center line of the vertical plumb line of the coordinate plate. Since the optical axis center line of laser component two and the optical axis center line of the calibrator are parallel and located on the same vertical plane, the optical axis center line of the calibrator and the center of the illuminance meter probe are on the same vertical plane. Since the optical axis center line of the calibrator and the center of the illuminance meter probe have been adjusted to be at the same height, the optical axis center line of the calibrator and the center of the illuminance meter probe are now coincident, achieving optical axis alignment of the calibrator.

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