一种机载多光谱共口径瞄准吊舱光学系统设计

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关键词：多光谱瞄准吊舱；多光谱共口径光学系统;无焦离轴三反;会聚透镜组；光学设计中图分类号：TH74 文献标志码：A doi：10.37188/CO.2025-0011 CSTR：32171.14.CO.2025-0011

Abstract： An optical system suitable for a new type of airborne multispectral common-aperture targeting pod is designed by adopting a folded off-axis three mirror telescope as the common optical path component. The optical system is characterizedbyminiaturization，high transmitance，multispectral，long focal length，and low difficulty of installation and adjustment. The designed multispectral common-aperture optical system has an effective optical aperture of 220mm ， a near-infrared focal length of 1100mm ， a short-wave infrared focal length of 1200mm ， and a medium-wave infrared focal length of 880mm . It can be integrated as a transmiting and receiving antenna with a laser sensor， which shares the same aperture and fast steering mirror with other imaging sensors. The system is mounted on a typical airborne spherical electro-optical pod platform with a diameter of 500mm . The optical design analysis and results indicate that the image quality of the optical design has reached the diffraction limit.Allindicators and parameters meet the technical requirements.

Key Words： multispectral targeting pod; multispectral common-aperture optical system; afocal TMA; convergent lens group; optical design

1引言

多光谱瞄准吊舱可装载于无人机、直升机、浮空器等多种航空平台，用于昼夜搜索侦察、识别跟踪、测距定位和激光制导等[1-4]。（剩余9969字）