Research on high precision centering assembly method of roll edge optical elements

Hua Liu; Xiaomei Liu

doi:10.1117/12.2194359

5 August 2015 Research on high precision centering assembly method of roll edge optical elements

Hua Liu, Xiaomei Liu

Proceedings Volume 9618, 2015 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 961817 (2015) https://doi.org/10.1117/12.2194359
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

In order to improve the imaging quality of target imaging optical system, in the special environment of large temperature difference, the centering assembly precision of roll edge optical elements was studied. According to the hole-axis coordinate error theory of mechanics, by analyzing the factors affected the precision of mechanical heating surface, combining with the existing method to eliminate error and centering assembly process, a new kind of high precision centering assembly method was put forward. Using additional grinding device to grinding roll edge of optical element, eliminate the machining error on the surface of the mechanical hot working, thus improve the centering assembly precision between the roll edge optical element and lens tube. The result of experiment shows that the centering precision can reach less than 3μm when assembled optical element after roll edge using new centering assembly method, and improved by 25% compared to the traditional method of roll edge optical elements are assembled directly after hot working. New assembly method with additional grinding device can improve the centering assembly precision of roll edge optical elements, and greatly reduce the difficulty of optical design of such optical imaging system using in large temperature difference environment, when meet the same image quality.

Citation Download Citation

Hua Liu and Xiaomei Liu "Research on high precision centering assembly method of roll edge optical elements", Proc. SPIE 9618, 2015 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 961817 (5 August 2015); https://doi.org/10.1117/12.2194359

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KEYWORDS

Tolerancing

Optical components

Assembly tolerances

Error analysis

Imaging systems

Surface roughness

Cameras

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