Patent ID: 7561260

Claim:
A system for verifying accuracy of lens holder attachment, comprising: a marking step for applying a mark in advance in a reference position in which attachment of a lens holder is anticipated on a convex lens surface of a reference lens when the lens holder is attached to the reference lens; an attachment step for attaching said lens holder to the convex lens surface of said reference lens by using a lens holder attachment apparatus; and a comparison step for comparing a position in which the lens holder is actually attached and a reference position in which said mark is applied on said reference lens; wherein a cavity-shaped hole is formed in said lens holder so that a position of said mark on said reference lens can be observed when the lens holder is attached to said reference lens; and a toolmaker's microscope is used in the comparison step to observe said mark through said cavity-shaped hole in said lens holder from a direction of said convex lens surface of said reference lens, an actual attachment position of said lens holder is compared to said reference position of said reference lens, and an attachment accuracy of said lens holder is verified.