Manufacturing method for controllable focal length liquid lens array

Abstract

The invention relates to a manufacturing method for a controllable focal length liquid lens array. By controlling the mass of silicon oil dropped in a silica gel substrate, the refraction surface curvature and the lens focal length of a single microlens are controlled. By controlling the temperature in the experiment process, plano-convex or convexo-convex lens shapes are manufactured. By displacing a platform, the arrangement and the number of microlenses in the array are controlled. The manufacturing method is more suitable for preparation of the liquid microlens array of a larger area. The manufacturing period is short, the manufacturing cost is low and the manufacturing method is simple. The finished product of the invention is strong in anti-extruding performance and controllable in focal length, the array is structured. The method achieves the controllable lens focal length, the rapid response speed and the excellent imaging quality. The method can be widely applied in the fields of photovoltaic cells, microfluidic devices, three-dimensional imaging, monomolecular imaging, artificial compound eyes and optical coupling devices.

Description

technical field [0001] The invention relates to a manufacturing technology of an optical device, in particular to a manufacturing method of a liquid lens array with a controllable focal length. Background technique [0002] Controllable focal length array lenses have a wide range of applications in photovoltaic cells, microfluidic devices, three-dimensional imaging, single-molecule imaging, artificial compound eyes, and optical coupling devices. A part of the traditional microlens array is fabricated by microablation methods, such as laser ablation and ion beam cutting. This method of excision produces microlens arrays by sculpting on a 3D model. However, when the microlens array produced by this method of laser ablation and ion beam cutting has a high smoothness, it is difficult to remove the cascade, resulting in the roughness of the microlens refraction surface. Therefore, it is difficult for the microlens array produced by this method to be used in a high-precision opt...

AI Technical Summary

Problems solved by technology

The lenses produced by these traditional methods will inevitably affect the entrance pupil parameters of the microlens when setting a specific focal length

Due to the above reasons, the microlens arrays produced by these methods have a limited range of use.

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