All-solid-state focus-adjustable micro lens based on IPMC driving

Abstract

The invention relates to the field of optics and the field of MEMS, and concretely relates to a focus-adjustable micro lens. The micro lens is structurally characterized in that a flexible polymer isplaced between a glass film and supporting glass, the glass film is small in hardness and prone to deformation, and the supporting glass is large in hardness and not prone to deformation. An intelligent material IPMC annular driver is placed on the topmost layer. A metal shell is arranged on the outermost side of the whole structure and plays a role in supporting and protecting. When voltage is applied to the annular IPMC, the outer side of the IPMC is fixed, downward displacement is generated on the inner side of the IPMC, the glass film and a flexible polymer deform, and a plano-convex lensstructure is formed. Through different applied voltages, driving forces generated by the IPMC are different, convex curvatures of the plano-convex lenses are different, and focal lengths are different. The micro lens is a typical MEMS integrated product and has the advantages of being small in size, low in power consumption, simple in structure, free of magnetic interference and the like.

Description

technical field [0001] The invention relates to the field of optical technology components, in particular to an all-solid-state adjustable focus microlens driven by IPMC. Background technique [0002] The current focusing method of optical products such as cameras and mobile phone cameras is mostly digital zoom, and the image is enlarged through an algorithm. In fact, digital zoom does not change the focal length of the lens. Through digital zoom, the captured scene becomes bigger, but the definition will decrease to a certain extent. In order to improve the imaging of the camera, the present application designs an adjustable focus microlens based on the principle of optical zoom. [0003] Among the currently researched adjustable focus lenses, there are mainly three types: liquid lenses, solid lenses and liquid crystal lenses. The production cost of the liquid adjustable focus microlens is low, and the structure is simple, but the phenomenon of liquid evaporation and leak...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an IPMC-driven all-solid-state adjustable focus microlens, which has the advantages of low driving voltage, small volume, simple structure, easy integration, and low power consumption, and solves the problem of complex structure, bulky volume, and small zoom range of traditional lenses. , magnetic interference and other defects, while avoiding the current problems of liquid lens leakage and evaporation, susceptible to temperature and gravity, etc.

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