Full-function optical performance detection equipment for automobile lamp
The automotive headlight full-function light performance testing equipment, which utilizes multi-camera deployment and software algorithms, solves the problem of incomplete headlight pattern detection in existing technologies. It achieves efficient and accurate headlight detection, reduces the rate of human error, and improves detection efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-04-07
AI Technical Summary
Existing vehicle headlight testing methods cannot comprehensively measure light patterns, and existing systems are complex, costly, and inefficient, with high requirements for testing sites and personnel.
Design a full-function optical performance testing device for automotive headlights. The device uses a multi-camera deployment to detect headlight inflection points and combines software algorithms to perform precise detection by simulating headlight beams. This includes inflection point location, brightness uniformity, and beam pattern width and height detection, and features automatic correction functionality.
It improves detection accuracy and efficiency, reduces human error rate, and provides stability assurance during vehicle light use.
Smart Images
Figure CN224095369U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of car light optical detection, specifically to a full-function light performance detection equipment for car light. BACKGROUND
[0002] With the improvement of people's living standards, cars have gradually entered thousands of households, bringing many conveniences to people's travel. As the "eyes" of the car, car lights not only enhance the image of the whole car, but also provide a safety guarantee for the driver at night or in rainy and snowy weather. Therefore, in the manufacturing process of the car, the detection of the car light is particularly important.
[0003] The method of detecting the light distribution performance of the motor vehicle light has a great influence on the detection results. According to different test principles, many different test techniques and methods have been developed. According to the development and current situation of the light distribution performance test techniques and methods of car light at home and abroad, there are mainly: (1) manual point-by-point test method; (2) light distribution screen point test method; (3) screen coordinate positioning test method; (4) lamp rotating method. The biggest disadvantage of the first three methods is that they can only measure a limited number of points and cannot measure the entire light pattern of the motor vehicle light, and almost have no experimental application value; the lamp rotating method is a test method that is widely used at present, which is combined with computer automatic control and data acquisition to obtain relatively complete screen illumination distribution data (the coverage rate of illumination distribution data is related to the description interval angle). But such system device is relatively complex, and the supporting equipment is more, the cost is higher, and the method requires higher detection site and detection personnel, and the detection efficiency is lower.
[0004] Therefore, we propose a full-function light performance detection equipment for car light. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a full-function light performance detection equipment for car light to solve the problems in the above background.
[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:
[0007] A full-function light performance detection equipment for car light, comprising a cabinet body and a light detection box, the light detection box is installed in the middle of the inner cavity of the cabinet body, the upper right corner of the inner wall of the light detection box is installed with a light pattern detection camera through a support and a fastener structure, and the left side of the inner cavity of the light detection box is installed with a projection light pattern background through a support and a fastener.
[0008] Preferably, the side surface of the light detection box is on the same vertical line with the side surface of the cabinet body.
[0009] Preferably, the cabinet body is an L-shaped structure as a whole, and the upper surface of the cabinet body and the side surface of the light detection box jointly form an L-shaped workbench surface.
[0010] Preferably, a lamp body detection rectangular hole is formed in the workbench surface of the light detection box, a fixing plate is mounted in the inner cavity of the lamp body detection rectangular hole, a through hole structure is formed in the middle portion of the fixing plate, and a lamp body irradiation lens is mounted in the inner cavity of the through hole structure.
[0011] Preferably, a system control box is arranged at the top portion of the side surface of the cabinet body, an MV visual operation interface is embeddedly mounted at the left side of the side surface of the system control box, and a system operation interface is embeddedly mounted at the right side of the side surface of the system control box.
[0012] Preferably, a green start button is mounted at the left side of the upper surface of the workbench surface of the cabinet body, and a red emergency stop button is mounted at the right side of the upper surface of the workbench surface of the cabinet body.
[0013] Preferably, a lamp body fixture for placing a lamp is mounted at the middle portion of the top of the workbench surface of the cabinet body.
[0014] Preferably, the light type detection camera is at least four, and is equidistantly distributed at the rear position of the lamp body irradiation lens.
[0015] Compared with the prior art, the automobile lamp full-function light performance detection equipment has the beneficial effects that:
[0016] The automobile lamp full-function light performance detection equipment can shield all external light interference by taking the rear of the lens as a self-made darkroom, can detect the inflection point, brightness uniformity and overall determination of the light-emitting area of the vehicle lamp through multi-camera deployment, and can detect whether the animation of the vehicle lamp meets the production judgment through software algorithm detection pass rate. The detection efficiency and detection accuracy are both much higher than the human eye detection, the artificial misjudgment rate is greatly reduced, and effective protection is provided for the stability of the vehicle lamp in use. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a structural schematic view of the utility model;
[0018] Figure 2 is a structural sectional view of the utility model;
[0019] Figure 3 is the utility model Figure 2 front view.
[0020] As shown in the figure: 1, cabinet body; 2, system control box; 21, MV visual operation interface; 22, system operation interface; 3, workbench surface; 31, lamp body detection rectangular hole; 32, green start button; 33, red emergency stop button; 4, light detection box; 41, light type detection camera; 42, projected light type background; 5, lamp body irradiation lens. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] Embodiment: Please refer to Figures 1-3 The present application provides a technical solution: a full-function light performance detection device for automobile lamps.
[0023] Mainly including cabinet body 1, light detection box 4 is installed in the middle part of the inner cavity of cabinet body 1 through fasteners.
[0024] As Figure 3 shown, light type detection camera 41 is installed on the right upper position of the inner wall of light detection box 4 through a support structure, and projected light type background 42 is installed on the left side of the inner wall of light detection box 4 through a support and fastener structure.
[0025] As Figure 1 shown, the entire cabinet body 1 is an L-shaped structure, and the left side surface of light detection box 4 and the upper surface of the left side of cabinet body 1 together form workbench surface 3.
[0026] Lamp body detection rectangular hole 31 is formed on workbench surface 3 on light detection box 4, and a fixing plate is installed in the inner cavity of lamp body detection rectangular hole 31, and a through-hole structure is formed in the middle part of the fixing plate, and lamp body irradiation lens 5 is installed in the inner cavity of the through-hole structure.
[0027] Among them, as Figure 1 shown, system control box 2 is installed on the top position of the side surface of cabinet body 1, MV visual operation interface 21 is embeddedly installed on the left side position of the side surface of system control box 2, and system operation interface 22 is embeddedly installed on the right side position of the side surface of system control box 2.
[0028] Among them, green start button 32 is arranged on the left side position of the upper surface of workbench surface 3 on cabinet body 1, and red emergency stop button 33 is arranged on the right side position of the upper surface of workbench surface 3 on cabinet body 1.
[0029] Wherein, the lamp body fixture is installed on the workbench 3 of the cabinet body 1, and the lamp to be detected is placed on the lamp body fixture.
[0030] Wherein, the number of light type detection cameras 41 is at least 4, and they are equidistantly arranged at the rear position of the lamp body irradiation lens 5.
[0031] In this embodiment, when the light detection is performed by using the all-in-one machine, first, the lamp to be detected is directly placed on the lamp body fixture, and the green start button 32 and the red stop button 33 are connected to the lamp through the wires, at this time, the lamp to be detected is connected to the power supply inside the all-in-one machine.
[0032] Then, the lamp is connected to the power supply through the green start button 32, and the light beam is irradiated, it should be noted that when the lamp to be detected is placed, the height of the lamp should be adjusted first, that is, the lamp is on the same center line with the lamp body irradiation lens 5, so that the light beam of the lamp to be detected can pass through the lamp body irradiation lens 5.
[0033] The all-function light performance detection equipment of the technical solution detects the car lamp by simulating 25-meter low beam up-down and left-right limit light modulation motor return-zero detection of high beam data, compares the inflection point position when the low beam is lit with the sample lamp inflection point, adjusts the inflection point position in the up-down and left-right four limit positions through PLC if there is a difference, detects the brightest point coordinates and brightness value of the low beam, and mainly detects the up-down and left-right positions, the brightest point coordinates, the light type width and height, and the relative position of the main and auxiliary low beams. The position difference between the auxiliary low beam center point and the main low beam inflection point. The light and dark uniformity trend of the light gray value below the low beam inflection point. The included angle between the horizontal and oblique cut-off lines. The sharpness (gradient) of the low beam cut-off line is detected by the image system sharpness method. The brightest point position and illumination value EMAX of the high beam are detected, and the control range refers to the sample lamp ± 20%. The ratio of the brightest point illumination value HV of the full light to the brightest point illumination value EMAX of the high beam is detected, and HV / EMAX>80%. Whether it is OK or NG is determined by meeting the above detection points, and the image system has the functions of light type deformation automatic correction and automatic light modulation: the inflection point is stably found and the detection parameters are transmitted to the PLC, the motor is controlled, the light type is automatically modulated according to the light modulation logic, and the design process requirements are met, which greatly reduces the manual misjudgment rate and improves the production efficiency.
[0034] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned terms in the utility model according to specific circumstances.
[0035] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A full-function optical performance testing device for automotive headlights, comprising a cabinet (1) and an optical testing box (4), characterized in that: The light detection box (4) is installed in the middle of the inner cavity of the cabinet (1). A light pattern detection camera (41) is installed on the upper right corner of the inner wall of the light detection box (4) through a bracket and fastener structure. A projection light pattern background (42) is installed on the left side of the inner cavity of the light detection box (4) through a bracket and fastener.
2. The automotive headlight full-function optical performance testing device according to claim 1, characterized in that: One side of the optical detection box (4) is on the same vertical line as the side of the cabinet (1).
3. The automotive headlight full-function optical performance testing device according to claim 1, characterized in that: The cabinet (1) is an L-shaped structure. The upper surface of the cabinet (1) and the side of the light detection box (4) together form an L-shaped workbench (3).
4. The automotive headlight full-function optical performance testing device according to claim 3, characterized in that: A rectangular hole (31) for lamp body detection is provided on the worktable (3) located on the light detection box (4). A fixing plate is installed in the inner cavity of the rectangular hole (31) for lamp body detection. A through hole structure is provided in the middle of the fixing plate. A lamp body irradiation lens (5) is installed in the inner cavity of the through hole structure.
5. The automotive headlight full-function optical performance testing device according to claim 1, characterized in that: A system control box (2) is installed at the top of the side of the cabinet (1). An MV visual operation interface (21) is embedded on the left side of the side of the system control box (2). A system operation interface (22) is embedded on the right side of the side of the system control box (2).
6. The automotive headlight full-function optical performance testing device according to claim 3, characterized in that: A green start button (32) is installed on the left side of the upper surface of the workbench (3) on the cabinet (1), and a red emergency stop button (33) is installed on the right side of the upper surface of the workbench (3) on the cabinet (1).
7. The automotive headlight full-function optical performance testing device according to claim 3, characterized in that: A lamp holder for placing lamps is installed in the middle of the top of the workbench (3) located on the cabinet (1).
8. The automotive headlight full-function optical performance testing device according to claim 1, characterized in that: The light pattern detection camera (41) is at least 4 and is distributed at equal intervals behind the lamp body irradiation lens (5).