| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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) |
| Beijing Institute of Space Mechanics & Electricity, Beijing 100076, China |
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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.
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Received: 28 August 2011
Revised: 15 September 2011
Accepted manuscript online:
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PACS:
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42.15.Dp
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(Wave fronts and ray tracing)
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42.15.Eq
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(Optical system design)
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42.15.Fr
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(Aberrations)
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Corresponding Authors:
Li Yan
E-mail: ppmmliyan@yahoo.com.cn
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Cite this article:
Zhou Feng(周峰), Li Yan(李岩), and Tang Tian-Jin(汤天瑾) The research of optical windows used in aircraft sensor systems 2012 Chin. Phys. B 21 064201
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