A High Precision Measurement System For Incomplete Optical Of Sphere With Longer Radius

The content of this paper is high precision measurement of incomplete optical of sphere with longer radius. The technology force on the curvature measurement of spherical radius when the device under test was not be a integral polishing spherical. The measuring accuracy of curvature radius of optical sphere is very important. It is a major parameter to determine the optical proper, ensure the accurate value of the radius of curvature and the lens manufacturing process. The precision measurement of curvature radius of optical sphere is the key of producing high quality spherical model of optical components, and has important significance for quality control of optical system.This paper put forward the variant of the Newton ring structure radius of curvature measurement system. The research based on In-depth study of traditional Newton ring interference measurement technology, and the situation that the previous radius of curvature measurement technique can not measure the device under test was in polishing spherical central notch state. The system accomplish polishing the curvature measurement of spherical radius of this special device under test by calculating the interference ring diameter.This program can accomplish the polishing spherical radius of curvature measurement without using it’s spherical vertices image. The system use the plane array CCD, image acquisition card and computer acquisition and measurement the interference ring diameter of data.