Current Optics and Photonics

  • 제8권5호
  • /
  • Pages.472-483
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  • 2024
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  • 2508-7266(pISSN)
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  • 2508-7274(eISSN)
한국광학회 (Optical Society of Korea)
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Design of a Telephoto Optical System for SWIR Using Apochromatic and Athermal Method

  • Tae-Sik Ryu (Department of Physics, Dankook University) ;
  • Sung-Chan Park (Department of Physics, Dankook University)
  • 투고 : 2024.08.26
  • 심사 : 2024.09.23
  • 발행 : 2024.10.25
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초록

This paper presents an intuitive method for selecting an optical material for achromatic and athermal design using the material selection index (MSI). In addition, in the case of a wide wavelength range such as a short-wave infrared (SWIR) waveband, we propose a new material selection method for apochromatic and athermal design by introducing the relative error of partial dispersion (REPD) and a first-order quantity redistribution method. To obtain a suitable material for effective apochromatic design, we first evaluate the REPDs of all lenses, deviated from that of an equivalent lens. Materials with a small REPD are then selected on a glass map to correct residual chromatic aberration while maintaining the existing MSI values to realize athermalization simultaneously. Using this proposed glass selection method, we successfully obtained an apochromatic and athermal telephoto system for SWIR that realizes stable performance over the specified temperature and wide waveband ranges.

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참고문헌

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