Journal of Korean Ophthalmic Optics Society (한국안광학회지)

The Korean Ophthalmic Optics Society (한국안광학회)
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Developement of Scope for Military Rangefinder Using Schmidt Prism and Biprism Theory of Optometric Instrument

안광학기기에 사용되는 바이프리즘원리와 슈미트 프리즘을 이용한 군사 거리측정기용 스코프 개발

  • Cha, Jung-Won (The Faculty of Beauty Health Sciences, Major in Ophthalmic Optics, Shinhan University) ;
  • Lee, Dong-Hee (Dept. of Visual Optics, Far East University)
  • 차정원 (신한대학교 뷰티헬스사이언스학부 안경광학전공) ;
  • 이동희 (극동대학교 안경광학과)
  • Received : 2015.05.13
  • Accepted : 2015.06.02
  • Published : 2015.06.30
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Abstract

Purpose: The new-type rangefinder, which is using the biprism principle, is introduced to develop the range finder which can be easily carried by soldiers, and in order to realize those technologies specifically, we try to develop a scope for military rangefinder by doing optical design which can secure enough space to move the biprism. Methods: After setting up the verious initial condition to realize two kinds of goals, that are the securement of enough space to move the biprism and the easy-exchangeability of two kinds of biprisms, and then the optical system was optimized by using optical design program CodeV in order to minimize the finite ray aberrations. Results: We designed the biprism housing to makes it possible to swap the two kinds of biprisms. It was appeared that the Schmidt prism is suitable as erecting prism which can make sure the space to move the biprism. 16.5 mm was good for the face length of Schmidt prism. The optical system with a Schmidt prism and a biprism was designed, and the finite ray aberrations was minimized. Conclusions: We developed a 5X scope for an optical rangefinder using a biprism and a Schmidt prism with 16.5 mm face length. This scope is valid for the optical system which has the effective field angle of ${\pm}3.6^{\circ}$, and the finite ray aberrations are well controlled within the ${\pm}8.95^{\prime}$.

목적: 병사들이 간편하게 휴대할 수 있는 거리측정기 개발을 위하여 바이프리즘의 원리를 이용한 신개념 거리측정기를 도입하고, 그 기술을 구체적으로 실현하기 위하여 바이프리즘이 이동할 수 있는 공간을 충분히 확보할 수 있는 광학설계를 수행하여 군사 거리측정기용 스코프를 개발하고자 한다. 방법: 바이프리즘이 이동할 수 있는 충분한 공간 확보와, 2가지 바이프리즘을 서로 쉽게 교환할 수 있도록 한다는 2가지 목표를 실현할 수 있는 다양한 초기조건을 설정한 후, 광학계의 유한광선수차들을 최소화 할 수 있도록 CodeV 광학설계 프로그램을 이용하여 최적화하였다. 결과: 2가지의 바이프리즘을 교환할 수 있도록 하는 바이프리즘 하우징을 설계하였다. 바이프리즘이 움직이기 위한 공간을 확보할 수 있도록 하는 정립프리즘으로는 슈미트 프리즘이 적당한 것으로 나타났다. 슈미트 프리즘의 면길이(face length)는 16.5 mm가 적당하였다. 슈미트 프리즘과 바이프리즘을 포함한 광학계를 설계하여 유한광선수차를 최소화 시켰다. 결론: 면길이(face length) 16.5 mm를 가지는 슈미트 프리즘과 바이프리즘을 사용하여 약 +5X의 스코프를 광학적 거리 측정기용으로 개발하였다. 이 스코프는 유효 시야 각 ${\pm}3.6^{\circ}$를 가지는 광학계가 되었으며, 유한광선 수차는 ${\pm}8.95^{\prime}$ 이내로 잘 제어되어져 있다.

Keywords

References

  1. Nam DH. Gun, 1st Ed. Seoul: Planetmedia, 2014;82-183.
  2. You YW, Kim BR, Yang U, Kim DY. Weapon Bible, 1st Ed. Seoul: Planetmedia, 2013;12-68.
  3. Bumryul. For an example of the scope sighting method, 2011. http://blog.naver.com/PostView.nhn?blogId=bumryul&logNo=100137606158, (05 May 2015).
  4. Kim HJ, Jun HG, Kim DH, Lee SH, Choi KS. A study on the development of a distance measuring instrument using laser. Proceedings of the Korea Institute of Signal Processing and Systems Conference(KISPS). 2001;2(1):85-88.
  5. Yoo BH, Shin BS, Chang WS, Kim JG, Whang KH. Development of range finder using long wavelength laser. Report of International Joint Research Project(Project No.1350009303). Ministry of Science & Technology. 2004; August:11-23.
  6. Park SH, Lee DH. Development on a Relay Lens Type Scope with 70 mm Eye Relief. J Korean Ophthalmic Opt Soc. 2009;14(3):29-35.
  7. Park SH, Lee DH. Development on a Roofed Pechan Prism Type Scope with Long Eye Relief. J Korean Ophthalmic Opt Soc. 2010;15(3):247-255.
  8. Cha JW. Study on golf range finder by using biprism theory of keratometer. J Korean Ophthalmic Opt Soc. 2013;18(4):495-501. https://doi.org/10.14479/jkoos.2013.18.4.495
  9. Cha JW. Golf course hole distance measuring apparatus using image division prism. Korea. patent 1013979020000, 2014.
  10. Warren JS. Modern Optical Engineering, 4th Ed. New York: McGraw-HILL, 2008;142-144.
  11. Bruce RI, David H, Joseph K. CodeV User Manual, Version 10.4. California: Optical Research Associates, 2012;1-242.
  12. Lee DH, Park SH. Development of 3X scope with objective configured with doublet+meniscus lens. J Korean Ophthalmic Opt Soc. 2014;19(4):487-492. https://doi.org/10.14479/jkoos.2014.19.4.487
  13. Warren JS. Modern Lens Design. New York: McGraw-HILL, 1992;63-71.
  14. Warren JS. Modern Lens Design. New York: McGraw-HILL, 1992;87-101.
  15. Warren JS. Modern Optical Engineering, 4th Ed. New York:McGraw-HILL, 2008;417-428.
  16. Freeman MH, Hull CC. Optics, 7th Ed. Oxford: Butterworth-Heinemann. 2003;194-210.
  17. Warren JS. Modern Optical Engineering, 4th Ed. New York: McGraw-HILL. 2008;339-364.
  18. Lee DH, Park SH. Development of scope with Abbe-Knig prism. J Korean Ophthalmic Opt Soc. 2013;18(4):509-517. https://doi.org/10.14479/jkoos.2013.18.4.509

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