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Acta Optica Sinica, Volume. 38, Issue 12, 1222001(2018)

Athermalization Design of Visible Light Optical System Based on Grouping by Weight

Na Xie** and Qingfeng Cui*
Author Affiliations
  • School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    Figures & Tables(12)
    Equivalent system. (a) Equivalent lens system; (b) H, Lj and Le under achromatic and athermal conditions

    Fig. 1. Equivalent system. (a) Equivalent lens system; (b) H, Lj and Le under achromatic and athermal conditions

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    Principle of athermal design. (a) Thermal aberration of initial system; (b) thermal aberration of althermal system

    Fig. 2. Principle of athermal design. (a) Thermal aberration of initial system; (b) thermal aberration of althermal system

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    Layout of initial optical system

    Fig. 3. Layout of initial optical system

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    Thermal defocus curves of initial system

    Fig. 4. Thermal defocus curves of initial system

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    MTF curves of initial optical system under different temperatures. (a) -40 ℃; (b) +20 ℃; (c) +60 ℃

    Fig. 5. MTF curves of initial optical system under different temperatures. (a) -40 ℃; (b) +20 ℃; (c) +60 ℃

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    Schematic of thermal aberration. (a) Initial system; (b) althermal system

    Fig. 6. Schematic of thermal aberration. (a) Initial system; (b) althermal system

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    Layout of athermal optical system

    Fig. 7. Layout of athermal optical system

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    Thermal defocus curves of athermal system

    Fig. 8. Thermal defocus curves of athermal system

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    MTF curves of optical system under different temperatures. (a) -40 ℃; (b) +20 ℃; (c) +60 ℃

    Fig. 9. MTF curves of optical system under different temperatures. (a) -40 ℃; (b) +20 ℃; (c) +60 ℃

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    • Table 1. Design specifications of system

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      Table 1. Design specifications of system

      ParameterContent
      Focal length /mm400
      F-number4
      Wavelength /nm435.0-700.0
      Depth of focus /mm±0.019
      Field of view /(°)8.4
      Modulation transfer function>0.4@55 lp·mm-1
      Temperature range /℃-40-+60
      Housing materialTI6AL4V(αh=9.5×10-6 ℃-1)

    • Table 2. Parameters of optical elements in initial system

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      Table 2. Parameters of optical elements in initial system

      iMaterialωi /(10-3 μm-1)γi /(10-6 ℃-1)ϕ /mm-1h /mm
      1NSSK519.661-2.5690.003050.000
      2NSSK820.077-3.4190.0062547.250
      3NKZFS1123.589-6.990×10-3-0.0093542.849
      4NKZFS1123.589-6.990×10-3-0.0126637.528
      5NSSK519.661-2.5690.0097738.578
      6NSK1416.509-1.3720.0030540.926
      7NBAK417.872-0.8130.000269.202

    • Table 3. Parameters of elements in athermal optical system

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      Table 3. Parameters of elements in athermal optical system

      iMaterialωi /(10-3 μm-1)γi /(10-6 ℃-1)ϕ /mm-1h /mm
      1NSSK519.661-2.5690.002350.000
      2NLAF320.859-5.930.006347.849
      3NKZFS1123.589-6.990×10-3-0.008543.618
      4NKZFS1123.589-6.990×10-3-0.011537.638
      5NSSK218.7791.9140.008038.293
      6NSK1416.509-1.3720.003940.687
      7NBAK417.872-0.8130.00059.140
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    Na Xie, Qingfeng Cui. Athermalization Design of Visible Light Optical System Based on Grouping by Weight[J]. Acta Optica Sinica, 2018, 38(12): 1222001

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    Paper Information

    Category: Optical Design and Fabrication

    Received: May. 29, 2018

    Accepted: Jul. 25, 2018

    Published Online: May. 10, 2019

    The Author Email:

    DOI:10.3788/AOS201838.1222001

    Topics

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