中国物理B ›› 2012, Vol. 21 ›› Issue (6): 64201-064201.doi: 10.1088/1674-1056/21/6/064201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

The research of optical windows used in aircraft sensor systems

周峰, 李岩, 汤天瑾   

  1. Beijing Institute of Space Mechanics & Electricity, Beijing 100076, China
  • 收稿日期:2011-08-28 修回日期:2011-09-15 出版日期:2012-05-01 发布日期:2012-05-01

The research of optical windows used in aircraft sensor systems

Zhou Feng(周峰), Li Yan(李岩)†, and Tang Tian-Jin(汤天瑾)   

  1. Beijing Institute of Space Mechanics & Electricity, Beijing 100076, China
  • Received:2011-08-28 Revised:2011-09-15 Online:2012-05-01 Published:2012-05-01
  • Contact: Li Yan E-mail:ppmmliyan@yahoo.com.cn

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摘要： The optical windows used in aircrafts protect their imaging sensors from environmental effects. Considering the imaging performance, flat surfaces are traditionally used in the design of optical windows. For aircrafts operating at high speeds, the optical windows should be relatively aerodynamic, but a flat optical window may introduce unacceptably high drag to the airframes. The linear scanning infrared sensors used in aircrafts with, respectively, a flat window, a spherical window and a toric window in front of the aircraft sensors are designed and compared. Simulation results show that the optical design using a toric surface has the integrated advantages of field of regard, aerodynamic drag, narcissus effect, and imaging performance, so the optical window with a toric surface is demonstrated to be suited for this application.

关键词: optical window, aircraft sensor, narcissus effect, toric surface

Abstract: The optical windows used in aircrafts protect their imaging sensors from environmental effects. Considering the imaging performance, flat surfaces are traditionally used in the design of optical windows. For aircrafts operating at high speeds, the optical windows should be relatively aerodynamic, but a flat optical window may introduce unacceptably high drag to the airframes. The linear scanning infrared sensors used in aircrafts with, respectively, a flat window, a spherical window and a toric window in front of the aircraft sensors are designed and compared. Simulation results show that the optical design using a toric surface has the integrated advantages of field of regard, aerodynamic drag, narcissus effect, and imaging performance, so the optical window with a toric surface is demonstrated to be suited for this application.

Key words: optical window, aircraft sensor, narcissus effect, toric surface

中图分类号:  (Wave fronts and ray tracing)

  • 42.15.Dp
42.15.Eq (Optical system design) 42.15.Fr (Aberrations)