Electrowetting type hybrid refractive-diffractive zooming liquid lens

Abstract

The invention solves the technical problems that an ordinary liquid lens does not have design freedom degree and aberration optimization can not be carried out on a single liquid lens in the background art. The invention relates to an electrowetting type hybrid refractive-diffractive zooming liquid lens which comprises a baseplate framework, a first baseplate and a second baseplate, wherein the peripheries of the first baseplate and the second baseplate are hermetically connected with the baseplate framework 228, an electrolyte and an insulating liquid which are mutually insoluble are filled in a seal cavity formed by the baseplate framework, the first baseplate and the second baseplate, a first annular electrode and a second annular electrode are arranged at the inner side of the baseplate framework, the surface of the second electrode and the inner surface of the baseplate framework are both coated with a hydrophobic insulating layer, and the first electrode is entirely immerged into the electrolyte. The first baseplate or the second baseplate is a diffraction surface baseplate, and the other one is a planar baseplate, or both the first baseplate and the second baseplate are diffraction surface baseplates. The invention provides the design freedom degree of aberrational correction for the liquid lens under the condition of not increasing the weight and the size of the liquidlens or influencing the structure and stability of the liquid lens.

Description

technical field [0001] The invention relates to a liquid variable zoom lens, in particular to an electrowetting type refractive-diffractive hybrid zoom liquid lens. Background technique [0002] The liquid variable focus lens is a new type of optical element based on the principle of bionics in the world. There are mainly variable focus lenses based on the change of the contact angle of electrowetting fluids and variable focus lenses based on the change of the curvature of the filled liquid surface. It has the characteristics of high tunable range, strong zoom ability, smooth zoom, low cost, easy processing, etc., and has a good application prospect. [0003] Ordinary liquid lenses, whether they are variable focus lenses utilizing changes in the contact angle of the electrowetting fluid or based on changes in the curvature of the surface of the filled liquid, are based on the aberration equation. Once the required optical power is determined, the surface curvature of the len...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an electrowetting type refraction-diffractive hybrid zoom liquid lens, which solves the technical problem in the background art that ordinary liquid lenses have no design freedom and cannot perform aberration optimization on a single liquid lens

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