红外技术2024，Vol.46Issue(5)：491-500,10.
变光阑长波红外连续变焦光学系统设计
Design of LWIR Continuous Zoom Optical System with Variable Diaphragm
唐晗 1蒋旭科 1张麟 1李虹明 1周春芬 1冯建伟 1张巍 1普龙 1曹凌 1马文怡谷 1王宏波 1毕宇波1
作者信息
- 1. 昆明物理研究所,云南 昆明 650223
- 折叠
摘要
Abstract
Miniaturization and athermalization design of uncooled long-wave infrared(LWIR)continuous zoom optical systems is difficult given the large relative aperture.The lightweight and miniaturization design of an LWIR continuous zoom optical system with an uncooled focal plane array detector for 640×512 pixels was realized by restraining the object lens size and total length of the system by using a variable diaphragm.Through reasonable material configuration and an active compensation method,the athermalization design of a continuous zoom optical system with a zoom ratio of 8.5 and five lenses was achieved.The system F number is constant at 1.2,the spectral range is 8 μm to 12 μm,the field of view(FOV)ranges from 30°×24° to 3.5°×2.8°,and the total length of the system is 187.5 mm.This optical system exhibits light weight,short total length,and high transmittance.Within the temperature range of-40℃to+60℃,the optical system affords good image quality in the full field of view during zooming.关键词
非制冷长波/连续变焦光学系统/可变光阑/消热差Key words
uncooled long-wave infrared/continuous zoom optical system/variable diaphragm/athermalization分类
电子信息工程引用本文复制引用
唐晗,蒋旭科,张麟,李虹明,周春芬,冯建伟,张巍,普龙,曹凌,马文怡谷,王宏波,毕宇波..变光阑长波红外连续变焦光学系统设计[J].红外技术,2024,46(5):491-500,10.
