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A device and method for making zoom liquid microlens

A manufacturing method and microlens technology, which are applied in the directions of lenses, instruments, optics, etc., can solve the problems of long manufacturing cycle, complicated operation process and high cost, and achieve the effects of controllable focal length, simple device structure and low cost.

Inactive Publication Date: 2021-07-23
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many disadvantages in the methods of preparing microlenses reported at present, such as: complex operation process, long production cycle, and high cost; the microlenses produced cannot be zoomed at any time; Cause dead volume, cross-contamination and other problems, in view of the above problems, the present invention provides a simple, easy, variable focal length liquid micro-lens manufacturing method

Method used

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  • A device and method for making zoom liquid microlens
  • A device and method for making zoom liquid microlens
  • A device and method for making zoom liquid microlens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using a 405nm laser, the absorption coefficient is 3.1cm -1 , lithium niobate sheet-c surface, the laser power is 11.7mW, the background light source is a halogen lamp, the magnification of the focusing objective lens is 25 times, the micro-liquid is introduced into the lithium niobate chip, and the three-dimensional platform is moved to make the laser directly below the liquid, open The electronic shutter uses the real-time observation optical path to observe the focal length of the liquid protrusion, and when the required focal length is reached, the laser is turned off to obtain a liquid microlens with a suitable focal length.

Embodiment 2

[0024] Using a 405nm laser, the absorption coefficient is 4.7cm -1 , lithium niobate sheet-c surface, the laser power is 11.7mW, the background light source is a halogen lamp, and the magnification of the focusing objective lens is 25 times. Below, open the electronic shutter, use the real-time observation optical path to observe the focal length of the liquid protrusion, reach the required focal length, turn off the laser, and you can get a liquid microlens with a suitable focal length.

Embodiment 3

[0026] Using a 405nm laser, the absorption coefficient is 7.9cm -1 , lithium niobate sheet-c surface, the laser power is 11.7mW, the background light source is a halogen lamp, the magnification of the focusing objective lens is 25 times, the micro-liquid is introduced onto the lithium niobate chip, so that the laser is located directly below the liquid, and the electronic shutter is opened. Use the real-time observation optical path to observe the focal length of the liquid bulge, reach the required focal length, turn off the laser, and obtain a liquid microlens with a suitable focal length.

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Abstract

The invention discloses a device and method for manufacturing a zoom liquid microlens. The device includes a laser 1, an electronic shutter 2, an aperture 3, a laser mirror 4, a background light source 11, a three-dimensional mobile platform 9, a lithium niobate chip 10, Focusing objective lens 5, observation objective lens 6, optical filter 7, CCD camera 8. The invention consists of two parts: a laser light path and a real-time observation light path. The production of liquid microlenses with different focal lengths is realized by utilizing the photovoltaic electric field generated by irradiating lithium niobate. The method has the characteristics of real-time controllable focal lengths of liquid microlenses, and the whole The process can be observed in real time. Microlens is an important optical device. Therefore, this technology can be applied to many fields such as focusing, imaging, and beam shaping, which is of great significance to the development of the optical industry.

Description

technical field [0001] The invention relates to a micro-droplet control technology, in particular to a device and method for manufacturing a zoom liquid micro-lens. Background technique [0002] With the rapid development of micro-lens preparation technology, micro-lens occupies a pivotal position in the optical industry, so it has become a research hotspot in the optical industry. Microlens technology is mainly used in beam shaping, focusing, imaging and other aspects. It has significant significance for the development of optical information processing and other fields. [0003] In 2018, Huang Yu and others disclosed a method and system for manufacturing a microlens array and its microfluidic chip (the application publication number is: CN108680970 A). They merged the photoresist solution and the alcohol liquid in the same output pipeline, The photoresist liquid is cut off by the alcohol liquid to form photoresist droplets, and the photoresist droplets are evenly dropped...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/00G02B3/14
CPCG02B3/00G02B3/14
Inventor 阎文博高作轩张雄陈洪建高开放昝知韬
Owner HEBEI UNIV OF TECH