欧美黑人巨大xxxxx_永久黄网站色视频免费直播_国产乱来乱子视频_超碰97资源站

Optical reference plate (original instrument) is referred to as the sample plate, which includes the reference plate, work sample plate, curvature sample plate, etc. It is based on the phenomenon of light wave interference to measure the optical surface error of a shape sample, and has become the most widely used in the manufacturing process of optical parts, the most simple a precision measurement tool, so its surface shape accuracy than the general optical parts to high, in order to ensure quality, the spherical surface must be concave and convex in pairs Manufacturing, processing also need to be repeatedly measured with instruments to ensure the radius of curvature and surface accuracy.
+86
Detail

Optical reference plate (original instrument) is referred to as the sample plate, which includes the reference plate, work sample plate, curvature sample plate, etc. It is based on the phenomenon of light wave interference to measure the optical surface error of a shape sample, and has become the most widely used in the manufacturing process of optical parts, the most simple a precision measurement tool, so its surface shape accuracy than the general optical parts to high, in order to ensure quality, the spherical surface must be concave and convex in pairs Manufacturing, processing also need to be repeatedly measured with instruments to ensure the radius of curvature and surface accuracy.


   According to the national standard of the People's Republic of China GB1240-76

JB_T 10568-2006 光學樣板.pdf

樣板庫5壓縮.jpg