Lens edging system, edging size management device, edging size management method and method of manufacturing spectacle lens

Abstract

A lens edging system includes: edgers to edge a spectacle lens; and an edging size management device used in connection with the edgers. The edging size management device has a memory unit configured to store and hold information for each model of the edger. When a lens material is edged using an edging tool of the edger, in association with a type of the lens material to be edged by the edger, and a type of the edging tool used by the edger, information is stored and held in the memory unit regarding edging characteristics of the edger obtained by at least one of the edgers, and an edger of the same model as at least one of the edgers has a correction unit configured to correct an edging parameter based on the information when edging is performed to the lens material using the edging tool of the edger.

1 . A lens edging system comprising:
 a plurality of edgers configured to perform edging to a spectacle lens; and   an edging size management device used in connection with the plurality of edgers, the edging size management device comprising a memory unit configured to store and hold information for each model of the edger, regarding edging characteristics when a lens material is edged using an edging tool of the edger, in association with a type of the lens material to be edged by the edger, and a type of the edging tool used by the edger,   wherein the information stored and held in the memory unit is the information regarding edging characteristics of the edger obtained by at least one of the plurality of edgers, and   an edger of the same model as at least one of the plurality of edgers comprises a correction unit configured to correct an edging parameter for the edging based on the information stored and held in the memory unit when edging is performed to the lens material using the edging tool of the edger.   
     
     
         2 . The lens edging system according to  claim 1 , wherein an edger of the same model as the edger other than at least one of the plurality of edgers is configured to adjust an edging size of at least one type of the lens material which is previously defined as a reference so that an error between a desired size and a real size of a spectacle lens after edging is suppressed within an allowable range, and thereafter the correction unit is configured to correct the edging parameter when performing edging to the lens material other than at least one type of the lens material defined as a reference. 
     
     
         3 . An edging size management device used in connection with a plurality of edgers that perform edging to a spectacle lens, comprising:
 a memory unit configured to store and hold information for each model of the edger, wherein the information regarding edging characteristics for edging a lens material by the edger using an edging tool, is stored and held in association with a type of the lens material to be edged by the edger and a type of the edging tool used by the edger;   an acquisition unit configured to acquire information regarding edging characteristic of at least one of the plurality of edgers, as the information stored and held in the memory unit; and   a management unit configured to control so that an edging parameter for the edging is corrected by the edger of the same model as at least one of the plurality of edgers, based on the information stored and held in the memory unit, when edging is performed to the lens material by the edger using the edging tool.   
     
     
         4 . An edging size management method of managing an edging size for a plurality of edgers that perform edging to a spectacle lens, comprising:
 acquiring information regarding edging characteristic for performing edging to a lens material by at least one of the plurality of edgers using an edging tool, in association with all types of lens materials to be edged by the edger and all types of edging tools used by the edger,   storing and holding the information regarding edging characteristics acquired by at least one of the edgers, in association with a model of the edger, a type of the lens material, and a type of the edging tool; and   correcting an edging parameter for the edging based on the already stored and held information regarding the edging characteristic, when edging is performed to the lens material by an edger of the same model as the at least one of the plurality of edgers, using the edging tool.   
     
     
         5 . A method of manufacturing a spectacle lens, wherein a spectacle lens is formed by edging using the edger, with an edging size managed by the edging size management method of  claim 4 .