Patent ID: 8333473
Filing Date: 2012-12-18
Classification: G02C

Abstract:
1. A wearing condition parameter measurement device for a spectacle lens configured to measure at least one wearing condition parameter necessary for manufacturing spectacles, comprising: at least one mirror having a mirror surface configured to reflect the wearing condition of a wearer; an imaging camera configured to simultaneously shoot the wearer and the mirror surface reflecting the wearer to obtain a shot image; and a calculation device configured to calculate the wearing condition parameter based on the shot image obtained by the imaging camera, wherein the mirror is disposed so that an angle formed between a plane having an optical axis of the imaging camera as a normal line and the mirror surface is one of equal to and larger than 30° and one of equal to and smaller than 60°, and the mirror is a side mirror configured to reflect the wearing condition viewed from a side of a head of the wearer, and a linear scale or an angular scale composed of a plurality of straight lines is provided on the mirror surface of the side mirror.