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

An optical system and variable focal length technology, which is applied in the field of realizing variable focal length optical systems, can solve the problems of easy wear of the lens, poor imaging quality, complex structure, etc.

Inactive Publication Date: 2010-03-03
陕西科强融合创新研究院有限公司
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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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  • Method for realizing zoom optical system without moving lens group and optical system
  • Method for realizing zoom optical system without moving lens group and optical system
  • Method for realizing zoom optical system without moving lens group and optical system

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Embodiment Construction

[0047] The present invention proposes a new method for realizing optical zoom, using liquid lens, a new type of optical element, to realize a zoom optical system without moving lens groups in the system, which overcomes the shortcomings of large volume and complex structure of traditional zoom systems. It has broad application prospects in many occasions with size restrictions.

[0048] The invention uses a liquid variable focus lens driven by air pressure or hydraulic pressure as a core component, and proposes a method for realizing a zoom optical system without moving mirror groups. One surface of the liquid lens is a variable curvature surface, and the other surface is a plane. Driven by hydraulic pressure or air pressure, the radius of curvature of the variable curvature surface of the lens can be adjusted, so that the focal length of the single lens can be adjusted. The other surface of the lens is a plane, which can be used as a diffractive optical surface for correctin...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/02G02B15/04G02B3/14G02B27/00
Inventor 张薇田维坚
Owner 陕西科强融合创新研究院有限公司
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