Patent ID: 6755528
Filing Date: 2004-06-29
Classification: A61B,G01B

Abstract:
A shape measurement apparatus for measuring a spherical shape of an object to be examined, the apparatus comprising:a measurement unit including: a first projection optical system which projects first targets for measurement onto a spherical surface to be measured of an object to be examined; a first detection optical system which detects images of the projected first targets; and a calculation unit which obtains a shape of the spherical surface based on the detected images of the first targets; an output unit which outputs the obtained shape of the spherical surface; a mode setting unit which sets any one of a first measurement mode for measuring a convex shape and a second measurement mode for measuring a concave shape; and a condition setting unit which sets at least one of a measurement condition and an output condition based on a mode setting result, the measurement condition and the output condition in the first measurement mode being different from the measurement condition and the output condition in the second measurement mode.