高铎瑞, 付强, 赵昭, 钟刘军. 摄远型红外8~12μm波段消热差物镜设计[J]. 红外与激光工程, 2014, 43(11): 3837-3842.
引用本文: 高铎瑞, 付强, 赵昭, 钟刘军. 摄远型红外8~12μm波段消热差物镜设计[J]. 红外与激光工程, 2014, 43(11): 3837-3842.
Gao Duorui, Fu Qiang, Zhao Zhao, Zhong Liujun. Athermalized telephoto objective design for 8-12 μm infrared wavelength[J]. Infrared and Laser Engineering, 2014, 43(11): 3837-3842.
Citation: Gao Duorui, Fu Qiang, Zhao Zhao, Zhong Liujun. Athermalized telephoto objective design for 8-12 μm infrared wavelength[J]. Infrared and Laser Engineering, 2014, 43(11): 3837-3842.

摄远型红外8~12μm波段消热差物镜设计

Athermalized telephoto objective design for 8-12 μm infrared wavelength

  • 摘要: 介绍了一种摄远型长波红外消热差物镜的设计方法.将摄远物镜模型与消热差模型相结合,推导出之间的光焦度分配关系,并将二者统一起来,直接得到摄远型消热差物镜的光焦度分配关系式.首先,根据摄远物镜的设计方法进行物镜的设计,在满足远摄比的情况下结合像差理论合理选择最优的前组和后组光焦度解;然后采用光学被动消热差方法,进行消热差设计,选择材料组合,分配组元内部各透镜的光焦度;最后利用计算机辅助软件进行像差校正.为了验证该方案的可行性,设计了一个工作于8~12 m,焦距100 mm,F数为2.0,全视场角为6,远摄比达到0.8的长波红外消热差光学系统.在-40~60 ℃温度范围内,成像质量稳定,调制传递函数(MTF)接近衍射极限,并且体积小、结构简单,质量轻.所设计系统优化后的光焦度分配值和初始计算值非常接近.

     

    Abstract: A method of athermal infrared telephoto objective was introduced in this paper. Telephoto lens model was combined with athermal model to find out and unify the relationship of focal power distribution. First, distribute the optical power of the fore group and the rear group on the basis of the principle of telephoto objective, choose the reasonable solution of the optical power of the two groups; then choose the appropriate material and distribute the optical power within each group to realize the ability of athermalization, finally computer-aided software was used to correct aberration. In order to prove the feasibility of the scheme, an athermal optical system was designed which works at 8-12 m, the focal length of 100 mm, F number is 2, and total length of the telephoto objective is 80 mm. The environment temperature analysis shows that the optical system has stable imaging quality, MTF is close to diffraction limit, the optical system has the character of small volume, simple structure and light. The optical power of optimized results were near the calculated results.

     

/

返回文章
返回