• 제목/요약/키워드: National Technology

검색결과 74,782건 처리시간 0.08초

Athermalization of an Optical System Based on Lens Shape and Assembly Method

  • Xu, Sihua;Peng, Xiaoqiang;Tie, Guipeng;Guan, Chaoliang;Hu, Hao;Xiong, Yupeng
    • Current Optics and Photonics
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    • 제3권5호
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    • pp.429-437
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    • 2019
  • Temperature adaptability is an important metric for evaluating the performance of an optical system. The temperature characteristics of the optical system are closely related to the material and shape of its lens. In this paper, we establish a mathematical model relating the temperature characteristics to the shape and material of the lens. Then a novel assembly structure that can solve the lens constraint and positioning problem is proposed. From those basics, the correctness of the theoretical model and the effectiveness of the assembly structure are verified through simulated analysis of the imaging quality of the optical system, whose operating temperature range is $-60{\sim}100^{\circ}C$.

Aflatoxin Monitoring in Rice and Barley

  • Lee SoonHyung;Joo JinBok;Han Sanghyun;Choi JuHyun;Ryu GapHee;Kwon OhKyung;Choi DalSoon;Chung Duck Hwa;Kim JiHun;Lee Kyu-Seung
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2005년도 국제학술회의
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    • pp.180-181
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    • 2005
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Electric and Magnetic Properties of Precipitated GaMnAs

  • Yu, Fucheng;Gao, Cunxu;P.V., Chandra sekar;Kim, Do-Jin;Kim, Hyo-Jin;Ihm, Young-Eon;Kim, Chang-Soo
    • 한국자기학회:학술대회 개요집
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    • 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
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    • pp.46.2-46.2
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    • 2007
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