Patent ID: 6496253
Filing Date: 2002-12-17
Classification: G01B,G01M

Abstract:
A method for automatic non-contact measuring optical properties of an optical object by means of a system comprising a light source, a reference pattern, an imaging and detecting means, at least the reference pattern and the imaging and detecting means being disposed on an optical axis on the system, and an image processing means, said method comprising the steps of:(a) disposing said optical object between said reference pattern and said imaging and detecting means coaxially therewith; (b) directing to said pattern an illuminating light from said light source in such a manner as to produce a plurality of illuminating light beams outcoming from each point of the pattern at different angles; (c) imaging said pattern through said optical object by means of imaging beams such that only one of said plurality of the illuminating beams has a conjugated imaging beam, and detecting the image, by said imaging and detecting means, and (d) processing said image by said image processing means and producing a measurement output.