Flexible supporting method of large-aperture lens

Abstract

The invention discloses a flexible supporting method of a large-aperture lens, which comprises the steps of; firstly, machining three bosses on the excircle of a circular lens base with a certain thickness at intervals of 120 DEG , machining a connecting part with a cuboid structure on the outer side of each boss, machining an installing hole and a pin hole on the outer side of each boss along the radial direction of the lens base, machining an installing hole and a pin hole on the connecting part along the axial direction of the lens base, machining an installing hole on each boss along the axial direction of the lens base, and machining a small boss with a step on the inner side of each boss; secondly, machining three corresponding installing surfaces on the excircle of the lens at intervals of 120 DEG, and machining radial flexible elements and axial press plates; thirdly, bonding the radial flexible elements with the lens, and fixing the bonded assembly in the lens base through the installing holes and the pin holes; and finally, tightly pressing the lens through the axial press plates, and fixing the axial press plates through the installing holes. According to the supportingmethod disclosed by the invention, positioning precision of the lens is integrally improved, stress environment of the lens under an assembling condition is improved, and optical aberration such as field curvature, astigmatism and the like can be eliminated.

Description

technical field [0001] The invention relates to a large aperture lens supporting method. Background technique [0002] In optical instruments, transmission imaging is a commonly used optical imaging technology. In order to improve the performance of transmission imaging, increasing the relative aperture is an inevitable choice, that is, increasing the focal length and at the same time expanding the size of the imaging lens, but this will give a large Aperture lens support structure design brings great difficulties. [0003] First of all, the lens cannot be lightweight designed, so it cannot be supported on the back; secondly, because the mass of the large-aperture lens is larger than that of the general lens, the supporting structure must have better rigidity; The heat is small, and the requirements of its supporting structure must ensure that the lens has good temperature adaptability. Finally, and the most important requirement, since the assembly of the lens requires mu...

AI Technical Summary

Problems solved by technology

However, the existing compression support method is prone to produce optical aberrations such as field curvature and astigmatism

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