The TRIOPTICS Spherometers are on use in hundreds of optical companies and laboratories worldwide. Our spherometers have become an industry standard for ultra-accurate radius measurement and calibration of test glasses. The long term accuracy and automated features make our spherometers the preferred instruments for laboratory and production environments.
Super Spherotronic for high-precision measurements
Super-Spherotronic is an automatic three ball contacting spherometer designed to meet the highest test plate calibration requirements. Being the most accurate instrument of our line of spherometers, Super-Spherotronic can measure the radius of curvature to an accuracy of 0.01%. To ensure that the highest available accuracy values of radius measurement are obtained, all Super-Spherotronic components have been optimized and perfected so that residual errors are negligible:
The mainframe components locating the probe are made of massive stainless steel, hardened and fine ground on machine-tools to the highest achievable accuracy. Concentricity of mainframe components to the probe is less than 1 micron (0.00004“).
The spherometer rings represent one of the key components of the Super-Spherotronic including an incredible amount of work to eliminate any possible error source. Made of heat-treated high quality stainless steel, the rings are machined on high accuracy grinding machine-tools and finally fine-lapped. An ingenious design combined with a special electro-erosion procedure allows the ball and the ball location site to be matched with highest accuracy. Each ring is delivered with a calibration certificate. The measuring accuracy is directly traceable to NIST standard.