Dielectric elastomer driving-based Alvarez lens zoom scanning device

Abstract

The invention discloses an Alvarez zoom scanning device based on dielectric elastomer driving, and belongs to the field of zoom lens optics. The system comprises a scanning device and a zooming device. According to the scanning device, a driver is coated with a flexible electrode and divided into four quadrants, voltage is applied to one or combination of several quadrants in the four quadrants, scanning of the whole structure on an area of interest is achieved, a dielectric elastomer deforms, and therefore the position of the zooming device is driven to move. And after the target reaches the region of interest, the focal length of the Alvarez zoom lens is changed, zoom imaging is performed on the region of interest, and zoom scanning and imaging of any target in a large range are realized. According to the invention, imaging of human eyes can be imitated, a target not in the central area of the visual field is converted to the central area of the visual field through the visual field, the problems of aberration and distortion at the edge of the visual field of the optical system are effectively reduced, and meanwhile, the imaging quality of the interested area is improved by utilizing the high-resolution imaging capability of the middle area of the human eyes.

Description

technical field [0001] The invention relates to a zoom lens, in particular to an Alvarez lens zoom scanning device driven by a dielectric elastomer, belonging to the field of zoom lens optics. Background technique [0002] In order to achieve fast and clear imaging of a target in a large range, a scanning device with fast response and variable focal length is required. Traditional zoom lenses usually require mechanical structures such as gears, motors and other connecting rods for transmission to change the focal length of the optical system. This method requires cumbersome mechanical structures and complex algorithm control. After a certain period of use, mechanical wear will cause serious damage. Large error, and does not have the function of scanning; the liquid lens changes the curvature radius of the film by filling the liquid or realizes zooming by changing the refractive index of the liquid, but this method has problems such as small optical aperture, slow response sp...

AI Technical Summary

Problems solved by technology

The Alvarez zoom lens can achieve zooming by moving the two mirrors perpendicular to the optical axis in reverse, but traditional driving methods such as MEMS and liquid crystal elastomer drive have the problem of small moving range, resulting in slow zooming speed, small zooming range, and single direction The problem that the driver cannot scan

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