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Acta Optica Sinica, Volume. 43, Issue 19, 1911005(2023)

Optical Design of Active Zoom Front System for AOTF Imaging Spectrometer

Lingying Chang1、*, Xinyou Wang1, Yuehong Qiu2, Guanru Wang1, Haonan Shi1, Chi Liang1, and Kui Chen1
Author Affiliations
  • 1College of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi, China
  • 2Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, Shaanxi, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (18)
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    Figures & Tables(11)
    Principle of AOTF

    Fig. 1. Principle of AOTF

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    The structure of AOTF imaging spectrometer

    Fig. 2. The structure of AOTF imaging spectrometer

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    Optical system structure of AOTF imaging spectrometer

    Fig. 3. Optical system structure of AOTF imaging spectrometer

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    Simplified model of TMA zoom system

    Fig. 4. Simplified model of TMA zoom system

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    Optical layouts of the zoom front system

    Fig. 5. Optical layouts of the zoom front system

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    Relation between focal length and center shape variable

    Fig. 6. Relation between focal length and center shape variable

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    MTF。（a）f ′=260 mm；（b）f ′=390 mm；（c）f ′=520 mm

    Fig. 7. MTF。（a）f ′=260 mm；（b）f ′=390 mm；（c）f ′=520 mm

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    Spot diagrams. (a) f ′=260 mm; (b) f ′=390 mm; (c) f ′=520 mm

    Fig. 8. Spot diagrams. (a) f ′=260 mm; (b) f ′=390 mm; (c) f ′=520 mm

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    • Table 1. Parameters of AOTF and CCD devices

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      Table 1. Parameters of AOTF and CCD devices

      CCDWavelength /μmResolution ratioPixel size /（μm×μm）
      0.4-1.7640×51215×15
      AOTFWork spectrum /μmCrystal size /mmAngle of incidence /（°）
      0.5-1.725≤6

    • Table 2. Optical system design parameters of AOTF imaging spectrometer

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      Table 2. Optical system design parameters of AOTF imaging spectrometer

      ParameterValue
      Spectral band /μm0.5-1.7
      Focal length range /mm260-520
      Zoom range2×
      F number6.5-13
      FOV /（°）2.7-1.3

    • Table 3. Parameters of the zoom front system

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      Table 3. Parameters of the zoom front system

      Radius of curvature R /mmDiameter /mm
      Wide AngleMid-zoomTele-zoom
      Mirror 1-540.4-512.1-516.555
      Mirror 2（stop）-173.9-189.5-247.39
      Mirror 3-255.0-299.8-470.852
      Distance /mm
      Mirror 1-mirror 2-150.8
      Mirror 2-mirror 3162.9
      Mirror 3-image-173.1
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    Lingying Chang, Xinyou Wang, Yuehong Qiu, Guanru Wang, Haonan Shi, Chi Liang, Kui Chen. Optical Design of Active Zoom Front System for AOTF Imaging Spectrometer[J]. Acta Optica Sinica, 2023, 43(19): 1911005

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    Paper Information

    Category: Imaging Systems

    Received: Mar. 13, 2023

    Accepted: Apr. 26, 2023

    Published Online: Oct. 13, 2023

    The Author Email: Lingying Chang (sophia_chang@126.com)

    DOI:10.3788/AOS230664

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology