The performance inspection of the surface of optical parts is very important. For example, the defects such as scratches and scribing on the surface of optical parts will cause the gloss of the product to decrease and affect its performance. As the surface characteristics of optical parts, gloss can present different bright spots on the surface of the material or overlap the surface image, which can be measured by glossiness. Can be tested with a gloss tester.
The glossiness varies according to the angle of the incident light, and the measured numerical results also deviate. The common gloss tester mainly has three measuring angles of 20 °, 60 ° and 85 °. When the incident angle increases, the gloss value of any surface also increases, so when measuring the specular gloss, the incident light angle must be determined. 60 ° is a universal measuring angle.
Optical parts surface gloss test-gloss tester
Gloss tester LS191 measuring optical parts using steps:
1. Select the optical parts sample, the surface should be clean and tidy, the area should not be too large or too small, it must be able to completely cover the measurement caliber of LS191.
2. Wipe the surface of the test specimen clean with lens paper or a lint-free cloth, and test the gloss of the optical parts specimen according to the operating instructions of LS191.
3. Take multiple points on the surface of the optical part for measurement and evaluate the glossiness of the surface of the optical part by viewing the average value.
The gloss tester LS191 has an intelligent statistical function, which can count the maximum, minimum, average and standard deviation of the test when in use. The smaller the difference, the more uniform the surface gloss of the material.
LS191 gloss tester is a high-precision glossiness measuring instrument independently developed by Linshang Technology. It has independent intellectual property rights and complies with Chinese national standard GB / T9754. The instrument adopts a universal angle of 60 degrees, which meets the requirements of the first -class working machine in the JJG696 standard.