Chromaticity detector for light source of vehicle lamp
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A technology of light source chromaticity and detection machine, applied in optical instrument testing, measuring device, testing optical performance and other directions, can solve the problems of cumbersome switching of the detected object and light source, unsuitable for mass production and high equipment cost, and achieve fast light source. Switching, reduced vision impairment, small footprint effect
Inactive Publication Date: 2019-02-15
JILIN DONGGUANG RUIBAO LAMP
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There are generally two methods for existing chromaticity detection methods, one is visual detection method, this detection method relies on human eye recognition, the accuracy is poor, and long-term operation will cause damage to vision
The other is the spectral radiation detection method, whose detection principle is to capture the light source image of the car light through a color camera, and convert the image into three-color components of R (red), G (green), and B (blue) (gray of 0 to 255). color scale value), calculate the ratio of each component to the total, and the formulas are: R value ratio=R / (R+G+B=0.001); G value ratio=G / (R+G+B =0.001); B value ratio = B / (R+G+B=0.001); determine whether the color of the lamp is normal by limiting the upper and lower limits of the ratio of each component, but this method has high equipment costs and requires replacement of the detected object And light source switching is cumbersome, not suitable for mass production
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Embodiment 2
[0021] Embodiment 2, an opening is opened on the top of the frame 1, and a transparent plexiglass 15 is fixedly installed in the opening, and a pneumatic clamp 2 is fixedly installed on the upper surface of the plexiglass 15, and the pneumatic clamp 2 adopts a hollow or open structure, so that the light source of the car light can be No occlusion, completely through the pneumatic fixture 2, in order to avoid the impact of ambient light on the test results, the sides of the pneumatic fixture 2 are fixed with light shields around the sides, and the camera 4 is fixed and installed in the center of the bottom surface of the darkroom 3.
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Abstract
The invention discloses a chromaticity detector for a light source of a vehicle lamp, comprising a frame, a pneumatic fixture, a dark room, a camera, a signal indicating alarm device, a control keyboard, a control box, an image display screen, an air pressure meter, a handle, a first fixing block, a lifting door and a picking and placing opening. The frame is provided with a pneumatic clamp on thebottom surface, and is provided with the control box, which is provided with the display screen, the control keyboard, the air pressure meter and the signal indicating alarm device on the front end face; the picking and placing opening is formed in the side surface of the frame, the first fixing block is fixedly arranged on the side wall of the frame above the picking and placing opening, and isvertically and slidably provided with the lifting door inside. According to the chromaticity detector for the light source of the vehicle lamp, visual damage caused by manual visual inspection can bereduced, detection precision is improved, and detection false and detection miss caused by human causes are avoided; cost increase caused by new equipment invested is greatly reduced; efficiency is obviously improved than a spectrum detection method, occupied area of whole equipment is small, so that the method is suitable for a situation that the production site is cramped.
Description
technical field [0001] The invention relates to a detection device, in particular to a vehicle light source chromaticity detection machine. Background technique [0002] Colorimetry is a comprehensive science based on the subject areas of physical optics, visual psychology and psychophysics. Color measurement and evaluation technology in colorimetry is a commonly used detection method in physics, analytical chemistry and biochemistry. There are generally two methods for existing chromaticity detection methods, one is visual detection method, which relies on human eye recognition, poor accuracy, and long-term operation will cause damage to vision. The other is the spectral radiation detection method, whose detection principle is to capture the light source image of the car light through a color camera, and convert the image into three-color components of R (red), G (green), and B (blue) (gray of 0 to 255). color scale value), calculate the ratio of each component to the tot...
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