Patent ID: 6314200
Filing Date: 2001-11-06
Classification: G01M

Abstract:
An optical member inspection apparatus, comprising:a light source;means for diffusing light emitted from said light source, said diffusing means comprising a central portion and a peripheral portion, a diffusion transmittance of said peripheral portion being higher than that of said central portion;means for picking-up an image of an optical member to be inspected, said image pick-up means being positioned to receive light emitted from said light source and transmitted through said diffusing means and said optical member, said image pick-up means being adjustable in magnification;a reference value storing means in which a value of a reference outline of said optical member and a recommended magnification of said image pick-up means are registered for each type of said optical member;means for calculating a reference frame using said reference outline value and said recommended magnification read from said reference value storing means in accordance with a type of said optical member; andmeans for displaying said reference frame superimposed on an image of said optical member picked-up by said image pick-up means.