一种密闭腔体的加热设计与分析

一些光学系统使用了大口径塑料材料的透镜.为了保证低温下其光学指标稳定,需要对该类透镜的工作环境进行加热.本文根据传热原理设计了一种密闭腔体,该密闭腔体内部具有加热元件及温度控制元件.本文根据加热需求,对该腔体进行结构设计,同时根据传热原理建立了该密闭腔体加热的数学模型,基于设计出的密闭腔体进行了加热试验,并对试验结果进行分析.试验结果表明,建立的加热数学模型能较好反映出该腔体的加热过程,设计的密闭腔体能实现所需的加热功能,可满足塑料透镜的工作环境要求.

Heating design and analysis of a closed cavity

Some optical systems make use of large aperture plastic lenses. To ensure their optical parameters remain stable under low temperature, it's necessary to heat these lenses' working environment. This article designs a closedcham-ber based on theory of heat transfer. This closed cavity contains heating component and temperature control component.Ac-cording the heating demand, structure design of this cavity is completed. At the same time analysis and calculation of the cavity's heating is finished. Heating experiment is carried out based on the designed closed cavity. The experimental results are analyzed.It shows,the mathematical model can reflect the heating process of the cavity. And analyzing the experimental result proves that the design of this closed cavity can meet the working environment requirement of this kind of lenses.