Patent ID: 8216024
Filing Date: 2012-07-10
Classification: B24B

Abstract:
1. A spectacle lens edging method comprising the steps of holding a processing target lens by lens holding means, mounting the lens holding means on a lens rotating shaft together with the processing target lens, processing a circumferential surface of the processing target lens using a processing tool by primary processing, correcting axial deviation of the processing target lens having undergone primary processing, and processing the axial deviation-corrected processing target lens by secondary processing, the step of holding the processing target lens by the lens holding means further comprising the steps of holding the processing target lens such that a center of the lens holding means coincides with a processing center of the processing target lens, and displaying an axial deviation measuring mark on one optical surface of the processing target lens so as to coincide with a reference position mark displayed on the lens holding means, and the step of correcting the axial deviation of the processing target lens having undergone primary processing comprising the axial deviation measuring step of removing the processing target lens from the lens rotating shaft together with the lens holding means after primary processing and measuring axial deviation of the processing target lens from the reference position mark and the axial deviation measuring mark, the axial deviation correcting step of correcting the axial deviation of the processing target lens which is measured by the axial deviation measuring step by holding one optical surface of the processing target lens with the lens holding means again such that the axial deviation measuring mark coincides with the reference position mark, and the step of mounting the lens holding means on the lens rotating shaft again together with the processing target lens.