Ion liquid-based microfluidic varifocus lens

Abstract

The invention discloses an ion liquid-based microfluidic varifocus lens. The characteristic of the basic structure of the ion liquid-based microfluidic varifocus lens lies in that a conductive inner core with a lens hole can accommodate 'conductive fluid and insulating fluid'. The inner core (3) is a conductive panel with a cylindrical through hole, and all the surfaces are coated with an insulation layer (7) and a hydrophobic layer (8); gaps between an upper cover plate (1) and a cover plate (2) and a through hole form a lens cavity for storing a liquid lens material; the inner core (3) made from a conducing material is used as an electrode, and the lower cover plate (2) coated with a transparent conductive layer (6) is used as a conductive electrode; and insulating fluid (4) and ion liquid (5) are filled in the lens cavity. The combination of non-conductive oil (4) with specific parameters and ion liquid (5) is selected, so the varifocus liquid system has the function of a convex lens without voltage or with a low voltage; meanwhile, the continuous large-range adjustment to the focus of the convex lens from the short focus length to the far distance can be realized.

Description

Microfluidic liquid zoom lens based on ionic liquid technical field The patent of the invention relates to the liquid zoom lens structure and its working principle based on ionic liquid, and belongs to the technical field of photoelectric imaging, photoelectric sensing and optical information processing devices. Background technique Microfluidic optics is a new technology of great significance. It combines modern microfluidic technology and micro-optoelectronics technology to develop a class of optical integrated devices and It has important application prospects in the fields of sensing, communication, and information processing [1]. Liquid zoom microlens can change the luminous flux and field of view performance of the micro-optical system, and has good manipulation and adaptability. As a replacement for traditional lenses, it can be applied to optical switches and optical interconnects, three-dimensional optical storage, static digital cameras, medical endoscopes , te...

AI Technical Summary

Problems solved by technology

However, the high voltage will lead to the breakdown of the insulating layer, and the reduction of the thickness of the insulating layer will obviously increase the difficulty of the process and affect the life of the device.

The method of simply reducing the voltage or reducing the thickness of the insulating layer is limited

In addition, the conductor salt solution used in the above-mentioned liquid lens has very high requirements on the ambient temperature, and cannot work normally at extremely high or low temperatures

Therefore, the traditional zoom liquid lens based on electrowetting is difficult to replace the traditional optical system

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