LED阵列式紫外固化光源光学系统设计

Design of an optical system for UV curing source with LED array

设计了一种新型的LED阵列式紫外固化光源系统,该系统主要包括多路可控恒流源,紫外LED空间阵列及光学系统等,其中紫外LED空间阵列结构提高了光源的辐照度和均匀性。在分析光源结构的基础上,对其光学系统进行了设计,给出了LED空间阵列光学系统的设计方法和设计实例,并利用Light Tools光学仿真软件对其进行了模拟。结果表明:采用该光学设计方法得到的空间阵列辐照系统,其紫外辐照度可达200 mW/cm2,辐照面上光强分布均匀稳定,能够满足紫外光固化过程对光源的指标要求。

A novel system mainly consisting of multipath controllable constant current source, UV LED spatial array and optical system for UV curing source with LED array was presented. Among them, UV LED spatial array is used to increase the radiation and uniformity of the source. Based on analyzing the UV curing source structure. An optical system was designed. The design method and several design cases, and simulations for optical system with the Light Tools software were also presented. Experimental results show that UV irradiance of the LED spatial array source designed by this method can reach 200 mW/cm2, and the radiation in the radiating area maintains even and stable, which can meet the needs for source in UV curing process.