红外折衍混合摄远光学系统无热化设计
发布时间：2018-10-12 20:01
【摘要】：为了提高远距离红外目标的探测能力,针对640pixel×512pixel红外CCD探测器,分析温度变化对光学系统的影响,设计出一种波长范围为8μm~12μm红外摄远物镜。系统采用折衍混合结构形式,焦距为200mm,相对孔径为1:2.2,视场角为7°,具有体积小,结构紧凑的优点。仅使用硫化锌、硒化锌和锗3种材料以及4片透镜实现了无热化设计。应用Zemax对设计结果进行像质评价,在-40℃~+60℃工作温度范围内,截止频率为17lp/mm时各视场调制传递函数值超过0.4,达到衍射极限,像面稳定,80%的能量集中在1个像元内,满足光学系统的设计要求。
[Abstract]:In order to improve the detection ability of long range infrared target, the influence of temperature change on optical system is analyzed for 640pixel 脳 512pixel infrared CCD detector, and a target lens with a wavelength range of 8 渭 m ~ 12 渭 m is designed. The system adopts a hybrid structure with a focal length of 200mm, a relative aperture of 1: 2.2, and a field of view angle of 7 掳. The system has the advantages of small volume and compact structure. Only three kinds of materials, zinc sulphide, zinc selenide and germanium, as well as 4 lenses were used to realize the non-thermal design. Zemax is used to evaluate the image quality of the design results. In the range of -40 鈩，
本文编号：2267422
[Abstract]:In order to improve the detection ability of long range infrared target, the influence of temperature change on optical system is analyzed for 640pixel 脳 512pixel infrared CCD detector, and a target lens with a wavelength range of 8 渭 m ~ 12 渭 m is designed. The system adopts a hybrid structure with a focal length of 200mm, a relative aperture of 1: 2.2, and a field of view angle of 7 掳. The system has the advantages of small volume and compact structure. Only three kinds of materials, zinc sulphide, zinc selenide and germanium, as well as 4 lenses were used to realize the non-thermal design. Zemax is used to evaluate the image quality of the design results. In the range of -40 鈩，
本文编号：2267422
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2267422.html
