Testing method for uniformity of light guide plate

Abstract

The invention discloses a testing method for uniformity of a light guide plate. The method comprises the steps that the light guide plate to be tested is arranged inside an incubator, so that high-temperature aging testing of the light guide plate is carried out, and the light guide plate is taken out of the incubator after testing is finished; the light guide plate is arranged inside a hot and cold impact machine, so that temperature impact testing of the light guide plate is carried out, and the light guide plate is taken out of the hot and cold impact machine after testing is finished; the light guide plate obtained after the high-temperature aging testing and the temperature impact testing are carried out is arranged on a testing platform in a standing mode under normal temperature; the light guide plate and a light source are arranged under a darkroom environment, the light source is lightened, brightness of a plurality of specific testing points on the light guide plate is tested, and then the uniformity of the light guide plate is obtained after the high-temperature aging testing and the temperature impact testing are carried out. The testing method for the uniformity of the light guide plate is easy and convenient to implement, the problems that after the light guide plate is used for a long time, the light guide plate is poor and light rays are not uniform can be effectively simulated, and therefore the superior light guide plate with the high bending resistance can be screened out.

Description

technical field [0001] The invention relates to the lighting field, in particular to a method for testing the uniformity of a light guide plate. Background technique [0002] The light guide plate is widely used in the field of backlight module technology and light box lighting, and is used to transform the line light source into a surface light source. [0003] At present, the method of testing the quality of the light guide plate is only based on visual inspection of whether there are black spots, leaks, and defects on the light guide plate, whether the surface light source is uniform, and whether the light guide plate is fogged or cracked. However, there is no effective test method for whether the light guide plate will have problems such as poor brightness uniformity due to abnormalities such as cracking and deformation of the light guide plate after long-term use. Contents of the invention [0004] The technical problem to be solved by the present invention is to pro...

AI Technical Summary

Problems solved by technology

[0003] At present, the method of testing the quality of the light guide plate is only based on visual inspection of whether there are black spots, leaks, or defects on the light guide plate, whether the surface light source is uniform, and whether the light guide plate is fogged or cracked.

However, after long-term use of the light guide plate, whether there will be problems such as poor brightness uniformity of the light guide plate due to abnormalities such as cracking and deformation of the light guide plate, there is no effective test method.

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