Optical system design for laser directional infrared countermeasure

HU Bo; TAO Zhong; QIN Chuan; ZHANG Jingyue; SUN Wu; LI Ming

doi:10.5768/JAO202142.0301004

Journal of Applied Optics > 2021 > 42(3): 398-403. > DOI: 10.5768/JAO202142.0301004

HU Bo, TAO Zhong, QIN Chuan, ZHANG Jingyue, SUN Wu, LI Ming. Optical system design for laser directional infrared countermeasure[J]. Journal of Applied Optics, 2021, 42(3): 398-403. DOI: 10.5768/JAO202142.0301004

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Optical system design for laser directional infrared countermeasure

Xi’an Institute of Applied Optics, Xi’an 710065, China

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Received Date: July 22, 2020
Revised Date: February 28, 2021
Available Online: March 21, 2021

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Abstract

Abstract

According to the development demand of miniaturization and lightweight for airborne photoelectric weapons, an infrared and laser system was designed with the common optical path. The infrared waveband of the system was 3 μm~5 μm, and the F number was 2. The surface array detector with a medium wave of 640×512 pixels was adopted, and the pixel size was 15 μm×15 μm. The laser emission and infrared optical path used the common telescopic system. By using cubic prism, the scanning in the range of azimuth 360° and pitch 0°~90° was realized by optical system. The common optical path design could reduce the size of the mirror and lens in the optical path, which had the characteristics of compact structure and small mass. It was focused on the problem of introducing the laser back scattering by the optical elements in common optical path. The joint optimization method of CODE V and LightTools was adopted to avoid its influence, which could ensure the good imaging performance of optical system.
- common optical path,
- photoelectronic countermeasure,
- optical design,
- infrared imaging

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References

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