Electrowetting liquid lens, manufacture method thereof and equipment using liquid lens

Abstract

The invention discloses an electrowetting liquid lens, a manufacture method thereof and equipment using the liquid lens. The electrowetting liquid lens comprises a container, electrolyte liquid and non-electrolyte liquid, wherein the electrolyte liquid and the non-electrolyte liquid are accommodated in the container and form an interface in the container; the container can apply voltage to the electrolyte liquid to change the shape of the interface after being powered up; the inner wall of the container is provided with a first coating layer which has poorer affinity for the electrolyte liquid than the affinity for the non-electrolyte liquid; and the inner wall thereof is further provided with a positioning lattice playing a positioning effect on the interface. The electrowetting liquid lens carries out accurate positioning on the interface by utilizing the positioning lattice, so that the interface is allowed to keep unchanged under a certain voltage range, accurate zooming and digital zooming are realized, and the problems of high large-drop driving voltage and small focal length changing range can be solved.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to an electrowetting liquid lens, a manufacturing method and a device using the liquid lens. Background technique [0002] Variable focus lenses are widely used in integrated imaging devices such as mobile phones, cameras, and microscopes. The traditional zoom lens is composed of multiple lenses, and a mechanical device is used to adjust the relative position of the lenses to achieve the purpose of zooming. Therefore, complex structures, high energy consumption, and easy wear and tear have become the main disadvantages of traditional zoom systems. In order to overcome the above shortcomings, liquid zoom is a good way. There are three ways to realize liquid zoom: (1) Change the internal refractive index of the variable focus liquid lens, and use physical and chemical methods to change the internal parameters such as liquid density and transmittance; (2) ) Change the curvatur...

AI Technical Summary

Problems solved by technology

In the prior art, the main disadvantages of the electrowetting variable focus liquid lens are concentrated in the following points: first, the ordinary tubular liquid lens can only change the focal length, the optical axis is unstable, the focal length cannot be precisely determined, and it is not convenient to manufacture and carry out digital control; second, the driving voltage of the liquid lens using a large droplet is large and the focal length variation range is small

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