摘要
采用一种新的结构形式对口径1.2 m、焦距2~6 m、相对孔径1/1.67~1/5的可见/近红外波段连续变焦距望远镜进行了设计。为适应目前地基大口径望远镜总体结构形式的需要,前端主系统采用Cassegrain反射式结构,后端采用三组元机械补偿变倍形式,使结构更加简洁。在高斯光学计算、像差分析基础上对各组元初始结构选择,并进行整体优化。设计结果各项性能指标均满足要求,且结构紧凑、补偿曲线平滑,表明这种结构形式是大口径连续变焦距望远镜一种较好的光学解决方案。
A new structure is adopted to design a visible and near infrared large aperture telescope with 1.2 m diameter, 2-6 m focal length, and 1/1.67-1/5 relative aperture. For meeting the requirement of modern ground-base large telescope, the front primary system using Cassegrain reflective form. And the back part uses three group mechanical compensation zoom refractive system, which makes the structure more simple and compact. Based on Gauss optics calculation and analysis of aberration, the initial form of each group was determined, and the whole system was optimized subsequently. The design results show that all of the optical indexes satisfy the command of the system, and the structure was compact, the compensation curve was smooth. The design demonstrates that the form is an effective optical structure for large aperture continuous zoom telescope.
出处
《红外与激光工程》
EI
CSCD
北大核心
2015年第10期3037-3042,共6页
Infrared and Laser Engineering
关键词
折反式
连续变焦距
光学设计
catadioptirc
continuous zoom system
optical design
