Patent ID: 7895758
Filing Date: 2011-03-01
Classification: G01B

Abstract:
1. A shape measuring apparatus for eyeglass element, comprising: a holder which holds an eyeglass element; a measuring element which traces a shape of the eyeglass element; a driver which drives the measuring element; a position detector which detects a position of the measuring element; an arithmetic controller which acquires and processes positional data on the measuring element detected by the position detector, and controls the driver to slide the measuring element along a contour of the eyeglass element while the holder is holding the eyeglass element; a moving amount detector which detects a moving amount of the measuring element per unit time when the measuring element moves towards the eyeglass element; and a movement controller which controls the measuring element to move at a desirable moving speed, the moving speed being the moving amount per unit time detected by the moving amount detector, wherein the shape measuring apparatus for eyeglass element measures a contour shape of the eyeglass element by allowing the measuring element to trace a three-dimensional shape of the eyeglass element and acquiring the three-dimensional shape based on data on a drive state of the driver and positional data on the measuring element.