Method for manufacturing liquid lens array capable of discretely zooming

Abstract

The invention relates to a liquid lens array capable of discretely zooming and a method for manufacturing the same. The method comprises the following steps: coating a layer of transparent conducting film serving as a first electrode on a glass substrate of the lens array and discretely distributing the transparent conducting film in a form of mesh openings with pins through photo-etching; coating a layer of hydrophobic insulating medium on the glass substrate and forming mesh opening distribution corresponding to the shape of the first electrode so as to expose the first electrode below the insulating medium; injecting nonvolatile insulating liquid into the openings, depositing a layer of transparent Parylene elastic membrane on the liquid and encapsulating the liquid in an enclosed space; and coating a layer of transparent conducting membrane serving as a second electrode on the Parylene membrane. The liquid lens array has the characteristics of compact structure, wide zooming range, high efficiency, wide selection range of filled liquid, electric control, easy array manufacturing, capability of making each lens unit in the array discretely zoom, simple manufacturing method and high efficiency. The device is widely used in the aspects of high-resolution, large visual field, high field depth, three-dimensional imaging and the like.

Description

technical field [0001] The invention relates to a liquid lens array technology, in particular to a liquid lens array capable of discrete zooming. Background technique [0002] The existing liquid lens technology is mainly divided into two types, one is based on the electrowetting effect, and the other is based on changing the pressure to control the curvature of the liquid surface. Among them, the more mature form is the electrowetting liquid lens. [0003] Electrowetting liquid lens ( figure 1 ) using two mutually incompatible liquids, one of which is an electrolyte and the other an insulating liquid, which includes a first base glass plate 121, a second base glass plate 122, a first metal electrode 123, a second metal electrode 124 , hydrophobic insulating layer 125 , electrolyte liquid 126 . By applying different voltages to change the contact angle between the two liquids and the solid container, thereby changing the radius of curvature of the interface between the two...

AI Technical Summary

Problems solved by technology

The advantage of this kind of liquid lens is that it has a large zoom range, high efficiency, simple principle, and a wide range of options for filling liquid; its disadvantage is that it is still mechanically controlled, and its structure is not compact, and it is not easy to realize arraying

[0005] At present, the realization of the liquid lens array is still limited to the patchwork of a single liquid lens system, and there is no integrated production method; at the same time, the focal length change of each liquid lens is Consistent, failing to implement separate zoom functions for each lens in the array

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