METHOD OF CENTERING IN LENS FRAME WORKING IN INFRARED SPECTRUM REGION Russian patent published in 2017 - IPC G01B11/27 G01M11/02 G02B7/02 

FIELD: physics.

SUBSTANCE: method involves mounting a lathe of a frame with a lens in the centering chuck and fixing a nozzle with a witness-lens in the frame, and centering the surfaces of the lenses with the control of an autocollimation microscope. The witness-lens is transparent in the visible region of the spectrum and has a through central hole. The radius of the witness-lens surface nearest to the autocollimation microscope is equal to the radius of the invisible lens surface. Displacement of the shear part of the cartridge centers the surface of the witness-lens nearest to the microscope, exposing the autocollimation image of the curvature center of this surface to the axis of rotation of the spindle of the machine, with self-centering of the invisible lens surface. Then, by moving the rotating spherical part of the cartridge, the visible surface of the lens is centered through the hole in the witness-lens. After this, a nozzle with a witness-lens from the lens rim is removed and the end and cylindrical surfaces of the frame are processed.

EFFECT: increasing the accuracy of lens centering and reducing the laboriousness of the centering process.

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