Method for realizing zoom optical system without moving lens group and optical system

Abstract

The invention relates to a method for realizing zoom optical system without moving a lens group and the optical system. The method comprises the following steps: firstly determining an object distanceA, a lens spacing B, a rear cut-off distance C and a group system focal distance f'; taking liquid varifocus lenses as a core element and carrying out model selection of the optical system; calculating and selecting applicable magnification Beta and determining the surface curvature radius of the two liquid lenses to finish the original structural design; carrying out aberration optimization anddetermining controlled variable of air pressure or hydraulic pressure to realize system zoom. The system comprises a system object plane and a system image plane, wherein at least two liquid varifocuslenses are arranged on the system object plane and the system image plane. The invention has the advantages of small volume, simple structure and high imaging quality, thereby particularly being suitable for occasions with severe requirement on structure and imaging quality.

Description

technical field [0001] The invention relates to a method for realizing a zoom optical system and the optical system, in particular to a method for realizing a zoom optical system without moving mirror groups and the optical system. Background technique [0002] For a long time, variable focus optical lenses have been widely used in various occasions in optical imaging systems. The realization of optical zoom usually adopts two methods: optical compensation zoom and mechanical compensation zoom, specifically optical compensation zoom and mechanical compensation zoom. Optical compensation zoom mainly uses more than two groups of lenses to move synchronously to complete zoom and focus compensation, thus avoiding the use of complex cam mechanisms, but the defect of this system is that the image plane can only be kept clear and stable at several focal lengths , so it is not widely used; with the improvement of precision processing technology and optical design level, the mechani...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for realizing a zoom optical system without moving lens groups and the optical system, which solves the problems of large volume, complex structure, easy wear of the lens, low service life and poor imaging quality in the background technology. disadvantages, especially suitable for occasions with strict requirements on structure and image quality

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