Micro-lens hot reflux process analysis method in complex phase change characteristic fluid environment

A technology of process analysis and thermal reflow, applied in computer-aided design, design optimization/simulation, calculation, etc., can solve problems such as optimizing experimental parameters, difficult molding process, unfavorable, etc., to achieve optimized experimental parameters, precise manufacturing, processing shape controllable effect

Active Publication Date: 2020-05-15
UNIV OF SCI & TECH OF CHINA
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, these two functions cannot be satisfied at the same time, so how to achieve a high degree of universality after the introduction of PDMS is an urgent problem to be explored
Because the microlens processing based on this method is completed in a very short period of time, it is difficult t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-lens hot reflux process analysis method in complex phase change characteristic fluid environment
  • Micro-lens hot reflux process analysis method in complex phase change characteristic fluid environment
  • Micro-lens hot reflux process analysis method in complex phase change characteristic fluid environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this example, the technological process of PDMS-assisted thermal reflow processing cylindrical microlens is selected for simulation, and its forming process and forming mechanism are analyzed.

[0053] Such as figure 1 As shown, the microlens thermal reflow process analysis method with complex phase transition characteristics disclosed by the examples of the present invention is used for the process simulation of PDMS assisted thermal reflow processing cylindrical microlens. The specific implementation steps are as follows:

[0054] Step 1 (s101): According to the entire flow area of ​​the two-phase fluid involved in the thermal reflux experiment, an overall three-dimensional geometric model is established. The overall geometric model is a cuboid, whose surface is the calculation boundary, and its interior is the calculation domain ;Use the simulation calculation pre-processing software to divide the grid, set the preliminary boundary conditions and the properties of...

Embodiment 2

[0079] In this example, the technological process of PDMS-assisted heat reflow processing of inclined cylindrical microlenses is selected for simulation, and its forming process and forming mechanism are analyzed.

[0080] The microlens thermal reflow process analysis method with complex phase change characteristics disclosed in this example is used for the process simulation analysis of PDMS-assisted thermal reflow processing of inclined cylindrical microlenses. The specific implementation steps are basically the same as the corresponding steps in Example 1. Wherein, the geometric model in step 2 is replaced with the simplified model of the simulation calculation of the inclined cylindrical lens, such as Figure 7 shown. The rest of the settings are unchanged. The contour evolution diagram of reflow and the velocity vector diagram when the time is 0.1s are as follows: Figure 8 with Figure 9 shown. The comparison between the simulation results and the experimental result...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A hot reflux process analysis method comprises the following steps of 1, establishing an overall three-dimensional geometric model, the overall geometric model being a cuboid, the surface of the overall geometric model being a calculation boundary, and the interior of the overall geometric model being a calculation domain; 2, taking one part of the overall geometric model as a local research object, taking one section of the local three-dimensional geometric model, and establishing a two-dimensional geometric model; 3, performing mesh generation on the two-dimensional geometric model by usingpreprocessing software, and setting preliminary boundary conditions and fluid regions; 4, importing the grid into FLUENT software, defining a calculation model for simulating and calculating a hot reflux process, and determining a control equation for solving and calculating the process; 5, setting boundary conditions of the simulation model and solving a numerical calculation method of a controlequation; and 6, carrying out iterative computation on the control equation. Based on the method, the hot reflux forming process can be analyzed and evaluated, and corresponding parameters of actual production can be better controlled to achieve more accurate manufacturing.

Description

technical field [0001] The invention belongs to the field of processing technology of micro-optic devices and micro-fluid devices, and in particular relates to the analysis and evaluation of micro-nano processing methods, in particular to a method for analyzing a micro-lens thermal reflow process in a fluid environment with complex phase-change characteristics. Background technique [0002] Microlens is a widely used micro-optical element, which has applications in optical sensors, fiber coupling, integrated 3D imaging, beam shaping and other fields. For different applications, the shape of the microlens is also different, including spherical lenses, ellipsoidal lenses, cylindrical lenses, oblique lenses, etc. with different numerical apertures. Due to the wide application and morphological diversity of microlenses, scholars have proposed many processing methods, such as ultra-precision machine tool processing, laser direct writing technology, grayscale mask technology, wet ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F30/20G06F119/08
Inventor 李木军时翠翠邱金峰杨之涵
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap