公开(公告)号：JPH04264423A

公开(公告)日：1992-09-21

申请号：JP27918491

申请日：1991-10-25

Applicant: ESSILOR INT

Inventor： KURISUCHIYAN JIYONKUURU ,  ARAN SHIYANSABOWAARU ,  BURIYUUNO MARANDO

IPC: G02C13/00 ,  B24B13/005

Abstract: PURPOSE: To enable engaging holding part by means of force added to a lens without permitting the lens to be broken by constituting a system by means of a plate, a calibration spring device and a displacement sensor. CONSTITUTION: The plate 11 for receiving spectacle lenses is pivotally attached to a fixing base 15 so as to be freely rotation possible and the calibration spring device 16 and the displacement sensor 18 are operated between the plate 11 and the fixing base 15. That is, when the plate 11 is rotated with an axis A2 as a center by engagement force added along an engagement axis A1 , the plate 11 is moved downwards and a proper calibration is executed by the calibration spring device 16. The spring device 16 normally permits the plate 11 to be brought into pressure-contact with the abutting part 34 of the base 15 in order to correctly fix a halt position. Then, the feeler 36 of the displacement sensor 18 covers an optical battery 35 so that a driving device for engaging the holding parts with the spectacle lenses 12 arranged in the plate 11 is operated.