椭圆聚焦型无极紫外固化灯研究与设计

利用蒙特卡洛分析法和有限积分法,设计一种椭圆聚焦型无极紫外固化灯。首先利用光学仿真软件分析了椭圆柱型谐振腔对非理想圆柱光源的光线利用率和光斑宽度两者之间的影响,选择合适的放大倍率和离心率;再通过电磁场仿真软件分析了谐振腔的电磁共振模式及频率,确定最佳电磁共振条件下谐振腔的开口深度;最后根据波导耦合原则,设计谐振腔与波导的耦合方式。经实验测试,无极紫外固化灯的发射光谱与所用无极紫外放电灯管的理论光谱相一致,并且测得的紫外光功率分布也与光学仿真的结果符合。

Research and design of electrodeless UV curing lamp with elliptic concentrator

An electrodeless ultraviolet curing lamp with elliptic concentrator was developed by using monte carlo and finite integration method.Firstly,the light efficiency and spot width of non-ideal cylindrical light source caused by reflection of elliptical resonant cavity were analyzed by the optical simulation software TracePro,and then the magnification and eccentricity of elliptical resonant cavity were preferred.On the basis of resonance mode and its frequency of resonant cavity investigated by electromagnetic simulation software CST,the depth of microwave cavity was determined to satisfy the best condition of electromagnetic resonance.The microwave feed-in method of resonant cavity was designed in accordance with the principle of waveguide-coupled-cavity.The emission spectrum of electrodeless UV curing lamp presented by this article is agreed with the theoretical spectra of electrodeless UV discharge lamp in experiment test,and UV irradiation intensity distribution in the second focus plane accords with optical simulation results.