Testing method and apparatus for illumination uniformity of light uniform lamp

Abstract

The invention provides a testing method and apparatus for illumination uniformity of a light uniform lamp. The apparatus comprises a test stand, a lamp bracket, a test board, a plurality of illuminometers, and an illumination uniformity control display circuit. The test stand has a guide rail parallel to a work plane. The lamp bracket is used for placing a to-be-tested lamp and is arranged at the test stand by a first support perpendicular to the work plane of the test stand; and one end, connected with the test stand, of the first support can slide along the guide rail. The test board is used for testing the illumination uniformity and is arranged at the test stand by a second support perpendicular to the work plane of the test stand; one end, connected with the test stand, of the second support is fixedly arranged at the guide rail; and four quadrant zones are arranged at the test board according to coordinate shafts of X, O and Y. The multiple illuminometers are arranged in the four quadrant zones of the test board movably; at least three illuminometers are arranged in each quadrant zone. The illumination uniformity control display circuit is used for obtaining illumination values from the illuminometers and outputting and displaying the values after operation. According to the invention, the method is simple and can be operated easily; and accuracy is high.

Description

technical field [0001] The invention relates to a method for testing the illuminance uniformity of a uniform light flashlight, in particular to a method and device for testing the illuminance uniformity of a uniform light lamp Background technique [0002] Within the field of view, people hope that the illuminance of the illuminated place is uniform or relatively uniform (in fact, for vision, what people actually feel is the difference in brightness, that is to say, the brightness within the field of view should be uniform enough). Especially in places where visual work is performed for a long time, if the brightness unevenness in the field of view is too large, it is easy to cause visual fatigue and affect work efficiency and the comfort of rest and entertainment. [0003] LED uniform light flashlight, as a miniature uniform light flashlight for criminal investigation, adopts the most advanced single-wavelength new light source at present. The output light has high purity, ...

AI Technical Summary

Problems solved by technology

Especially in places where visual work is performed for a long time, if the brightness unevenness in the field of view is too large, it is easy to cause visual fatigue and affect work efficiency and the comfort of rest and entertainment

[0003] LED uniform light flashlight, as a miniature uniform light flashlight for criminal investigation, adopts the most advanced single-wavelength new light source at present. The output light has high purity, strong directionality, and is very uniform. It can provide uniform lighting, clear and without visual interference, and is widely used in trace detection targets. Search, and can be directly used for photographic evidence collection lighting, to meet the actual needs of criminal investigation, is an ideal portable investigation light source for criminal technicians, and the uniformity of the brightness of the lamp is an important parameter index to measure a uniform light lamp, as a This is a professional uniform light flashlight, the uniformity of illumination can reach above 0.9, but in the actual design and development, due to factors such as the consistency of accessories, assembly process, design errors and other factors, there are dark spots, edge color light, Light leakage, insufficient illumination and other phenomena exist, resulting in the failure to meet the technical requirements in the design, and also bring repeated useless work to the designer

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