Method for accurately adjusting concentricity of telephoto folding axis lens group

Abstract

The invention belongs to the technical field of light machine precision adjustment, and discloses a telephoto folding axis lens group concentricity precision adjustment method, which comprises the following steps: S1, designing a semi-reflecting and semi-transmitting tool partition, and carrying out position calibration by adopting a centering turning calibration method to meet the condition that a partition scribed line on the surface of partition glass is concentric with the outer circle of a tool lens frame; the outer circle of the tool lens frame is matched with the inner hole of the folding-axis lens barrel of the telephoto folding-axis lens group; s2, calibrating the mechanical axis of the folding-axis lens barrel to be consistent with an internal focusing axis in an internal focusing and centering mode, adjusting the position of a reflector group at the folding position of the folding-axis lens barrel, ensuring that the graduation lines of the tool graduation fall on the internal focusing axis, and realizing that the assembling and adjusting precision of the folding-axis reflector meets the requirement; and S3, calibrating the consistency of the optical axis of the lens assembly and the mechanical axis through a centering turning calibration method, assembling the transmitting mirror into the lens barrel, and ensuring that the assembling and adjusting quality of the telephoto folding-axis mirror meets the requirements. According to the invention, the performance and the imaging quality consistency of the folding-axis optical lens group product are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of optical-mechanical precision assembly and adjustment, and relates to a method for precisely adjusting the concentricity of a telephoto folding axis mirror group, which mainly solves the problems of reflector position positioning, interval calibration, and optical axis concentric alignment in the process of adjusting the folding axis optical mirror assembly. In order to solve the problems of high difficulty in debugging and low accuracy of the adjustment method, this method can accurately realize the concentricity adjustment of the folding mirror group, and improve the performance and imaging quality of the folding mirror group products. Background technique [0002] Due to its long focal length and high compression ratio, the telephoto lens group is widely used in long-distance observation and reconnaissance optical products. The telephoto folding axis mirror group is to add a reflector group to the coaxi...

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Problems solved by technology

[0005] In view of the lack of assembly and adjustment methods of the current folding optical mirrors, low assembly and adjustment accuracy, and unstable quality, the present invention pro

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