岳宝毅, 刘钧, 郭佳, 陈阳, 李汉. 折/衍共口径红外双波段位标指示器光学系统设计[J]. 红外与激光工程, 2019, 48(4): 418003-0418003(9). DOI: 10.3788/IRLA201948.0418003
引用本文: 岳宝毅, 刘钧, 郭佳, 陈阳, 李汉. 折/衍共口径红外双波段位标指示器光学系统设计[J]. 红外与激光工程, 2019, 48(4): 418003-0418003(9). DOI: 10.3788/IRLA201948.0418003
Yue Baoyi, Liu Jun, Guo Jia, Chen Yang, Li Han. Optical system design of folded/diffractive co-aperture infrared dual-band beam positioner[J]. Infrared and Laser Engineering, 2019, 48(4): 418003-0418003(9). DOI: 10.3788/IRLA201948.0418003
Citation: Yue Baoyi, Liu Jun, Guo Jia, Chen Yang, Li Han. Optical system design of folded/diffractive co-aperture infrared dual-band beam positioner[J]. Infrared and Laser Engineering, 2019, 48(4): 418003-0418003(9). DOI: 10.3788/IRLA201948.0418003

折/衍共口径红外双波段位标指示器光学系统设计

Optical system design of folded/diffractive co-aperture infrared dual-band beam positioner

  • 摘要: 针对反射式双模位标指示器视场小、中心遮拦、能量低等问题,提出一种折/衍共口径红外双波段位标指示器光学系统。基于消色差理论和MRTD模型分别推导了光学系统波段间消色差公式和作用距离方程。设计的双波段光学系统具有共焦距特性,从而实现了双波段同步探测以及识别目标信息的一致性。折/衍共口径红外双波段位标指示器光学系统工作波长为3.4~4.8 m、7.7~9.5 m,俯仰、偏航视场为-26~26,焦距115 mm,F数为2。结果表明:在-40~60℃温度范围内消热差,成像质量接近衍射极限。

     

    Abstract: Aiming at the problem of small-field, central obscuration and low anergy of reflective optical system, the dual-mode beam positioner optical system of a folded/diffractive co-aperture infrared dual-band positioner was proposed. Based on achromatic theory and MRTD model, the equations of wavelength band achromaticity and action distance were deduced, respectively. With the property of a common focal length in the dual-band optical system, dual-band simultaneous detection and consistency of target information identification were achieved. The parameters of the folded/diffractive co-aperture infrared dual-band positioner optical system were as follows:wavelengths are 3.4-4.8 m and 7.7-9.5 m, pitch/yaw is -26-26. focal length is 115 mm and F number is 2. The results show that thermal difference eliminated in the temperature range of -40-60℃, the optical transfer function is close to the diffraction limit.

     

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