Dielectric elastic microfluid liquid lens of sandwich structure and manufacturing method thereof

Abstract

The invention discloses a dielectric elastic microfluid liquid lens of a sandwich structure and a manufacturing method thereof, and belongs to the field of optical imaging. The dielectric elastic microfluid liquid lens comprises an upper unit, a microfluidic chip and a lower unit, the upper unit comprises an upper thick film, an upper flexible electrode and an upper dielectric elastomer; the lowerunit comprises a lower dielectric elastomer, a lower flexible electrode, a lower thick film and a fixed transparent flat plate; grooves and bosses which are matched with each other are distributed inthe peripheral areas of the two layers of dielectric elastomer discs in a staggered mode respectively, the internal areas of the two dielectric elastomers are filled with microfluid, and a sandwich structure is formed. The invention further discloses a manufacturing method of the dielectric elastic microfluid liquid lens of the sandwich structure. Due to the fact that the dielectric elastomer hasthe advantage of being large in deformation, the liquid lens has a large zooming range, the liquid lens has high zooming speed and efficiency in an electric driving mode of the dielectric elastomer,and the liquid lens further has the advantages that the size is small, the structure is compact, and liquid is not prone to evaporation and leakage.

Description

technical field [0001] The invention relates to a dielectric elastic microfluidic liquid lens with a sandwich structure and a manufacturing method thereof, belonging to the field of optical imaging. Background technique [0002] Traditional zoom systems are usually composed of multiple groups of solid lenses, and mechanical devices such as motors or gears are used to move the lens group. Due to the multiple groups of lenses and mechanical devices inside, the system has large volume, short life, and strict requirements for accuracy and synchronization. And other problems, it is difficult to apply to occasions that have strict requirements on volume and zoom capabilities, such as mobile phones, cameras, medical endoscopes, and microscopes. The liquid lens has a unique zooming method, and a single lens can be used to realize the zooming function. It has the advantages of simple structure, small size, fast response speed, and convenient operation. At present, the driving method...

AI Technical Summary

Problems solved by technology

LCD drive has the characteristics of simple structure and easy operation, but the adjustable range of focal length is small

The liquid-filled drive changes the volume of the injection cavity and adjusts the radius of curvature of the elastic film to change the focal length of the liquid lens. This method has a large zoom range, but requires an additional drive pump, resulting in a larger system volume

The electrowetting driving method adjusts the contact angle of the two liquids by changing the voltage to change the focal length. Although the driving voltage is low, the zoom range is small, the optical aperture is small, and the range of liquid materials that can be selected is limited.

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