METHOD FOR CENTERING LENS IN RIM AND RIM THEREFOR Russian patent published in 2018 - IPC G01M11/02 G01B11/27 G02B7/02 

FIELD: physics.

SUBSTANCE: method involves installing the lens on a flat support flange of a cylindrical hole in the intermediate portion of the rim, which is placed by the flange on the support flange of the cylindrical hole in the main rim. The rim is rotated around its base axis, the runout of the center of curvature of the first lens surface is measured relative to the center of curvature of the second lens surface, the lens is moved radially on the flat support flange of the intermediate part of the rim to align the centers of curvature of the first and the second working surfaces of the lens, and the lens is fixed in the intermediate part of the rim. The runout of the centers of curvature of the first and the second surfaces with the axis of rotation is measured, the intermediate part of the rim is shifted to the support flange of the main rim for combining the centers of curvature of the first and the second surfaces with the axis of rotation and the position of the intermediate part of the rim is fixed in the main rim. The rim has an external cylindrical base surface and a flat external base flange which form the reference axis of the rim, an internal cylindrical opening with a flat support flange in which the intermediate cylindrical part is inserted with an increased seating clearance, the said intermediate cylindrical part having a flat support flange for mounting the lens.

EFFECT: increasing the accuracy of centring the lens while maintaining centring on both working surfaces of the lens and simplifying the manufacturing of the main rim.

6 cl, 5 dwg