光固化快速成形中的紫外LED光源系统实验研究  

Experimental Research of Ultraviolet LED Source System in Stereolithography Apparatus

作　　者：谢军[1] 游立德[1] 侯文杰[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074

出　　处：《光电工程》2009年第2期100-104,共5页Opto-Electronic Engineering

基　　金：中国博士后科学基金资助项目(20070410934)

摘　　要：面向我国各类院校和中小企业教育、研发需求,本文提出采用紫外LED光源替代光固化快速成形设备中紫外激光器及汞灯等传统光源,设计了一个基于单片紫外LED的光源系统,对光敏树脂进行固化。该光源系统采用基于多透镜结构的聚焦系统对单片LED聚焦;同时,对LED芯片进行闭环控制以保证其工作在恒稳状态。实验结果表明,该光源系统各项指标达到设计要求,系统运行稳定、结构简单、具有可操作性。与光固化成形设备中的其它光源系统相比,在保证一定的制件精度和速度的基础上,具有低造价和低运行成本等突出特点,有较高的性能价格比。Aiming at the request of education academies and mid ＆ small-scale corporations, conventional UV optical source systems in stereolithography apparatus were replaced with Ultraviolet Light Emitting Diode （UV LED） in the paper, and a LED optical system based on a single UV LED was designed. In the system, the beam from the.single LED was focused through a multi-lens optical focusing system, and the LED chip was controlled with close-loop control strategies in order to keep steady operation. Experimental results show that the optical system meets the design request and has the advantages of simple structure, long stabilization and maneuverability. Compared with the other light sources in the stereolithography apparatus, the outstanding characteristics of the system are lower cost and higher performance on the condition of meeting speed and accuracy.

关 键 词：光固化快速成形 LED 聚焦 驱动 

分 类 号：TN312[电子电信—物理电子学]