摘要
论述了一种作为红外目标源的离轴抛物面反射式平行光管系统的组成.按照系统特定的光源离焦调节使用指标要求,研究了该平行光管在设计时需考虑的光学结构参数的确定方法,综合考虑了抛物面镜口径及离轴量、平面反射镜尺寸及位置和光源离焦使用时的关系,给出了相应的计算公式,并根据计算结果确定了一组合适的平行光管参数,其中离轴抛物面镜参数为口径 =110mm ,离轴量h =90mm ,焦距f =6 5 0mm ,平面反射镜口径为4 0mm ,两镜中心距可调节范围为4 80～5 5 0mm .实验证明,此计算方法对该平行光管的整体结构设计具有一定的实用价值.
A kind of off-axis parabolic collimator acted as infrared target source was introduced. According to the system specific requirements of the dot-source defocusing amount, a mathematic method was discussed to determine the structure parameters of the optical components. The relation between the aperture and the off-axis magnitude of the parabolic mirror, the size and the position of the flat mirror and the dot-source defocusing amount was studied. According to the results, the proper parameters of the off-axis parabolic collimator were obtained: the size of the parabolic mirror =110?mm, the off-axis magnitude h=90?mm, the focal length f=650?mm, the size of the flat mirror is 40?mm and the distance between mirrors 480～550?mm. And the results are used to guide the practical structure design of the off-axis parabolic collimator.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第4期67-69,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
平行光管
结构设计
离焦
离轴
collimator
structure design
defocusing
off-axis
