红外技术Issue(5)：387-391,5.
轻小型折衍射混合红外中波摄远物镜无热化设计
Athermal Design of a Miniaturized Refractive-diffractive Hybrid MWIR Infrared Telephoto Lens
摘要
Abstract
Infrared system has many advantages, such as recognizing camouflage, working all day, passive work and so on, so it is widely used in tracking and searching systems. However, these systems require that the infrared optical system has clear image, compact structure and can adapt to large temperature variations. According to the optical passive athermalized methods, a mid-wave infrared telephoto lens is designed. It can work in a wide temperature range, has excellent image quality, compact structure, and small volume. The telephoto ratio can reach 0.6. The parameters of system are as follows:working band is 3-5m, focal length is 150 mm, F number is 3, and the working temperature is -40℃-60℃. The results show that the system only uses three lenses and diffractive elements to achieve athermalization requirements. It reduces cost and weight of the system, modulation transfer function is above 0.8 at 17 lp/mm and close to the diffraction limit. It achieves the requirements that have excellent image quality over a wide temperature range and miniaturization.关键词
红外中波摄远物镜/无热化设计/折衍射混合系统/结构紧凑Key words
infrared mid-wave telephoto lens/athermal design/refractive-diffractive hybrid system/compact structure分类
信息技术与安全科学引用本文复制引用
牟蒙,牟达,马军,李卓..轻小型折衍射混合红外中波摄远物镜无热化设计[J].红外技术,2015,(5):387-391,5.基金项目
总装备部十二五预研基金项目资助课题。 （）
