All Issue

2018 Vol.29, Issue 6
December 2018. pp. 233-240
Abstract

In this paper, a design method to reduce fabrication errors in reflector shape of a test lamp for a flame detector is carried out. Although the test lamp should be operated in parallel with a high-intensity light, it is difficult to fix the small reflector that controls the central light during fabrication. To solve these problems, a small spherical reflector is designed to minimize the performance degradation for a light loss factor of less than 5%, even during tilt and decenter, and a spherical shape is proposed for a small reflector with little effect on the error when designing the optical system.

본 논문에서는 불꽃감지기용 테스트램프의 반사경 형상에 대해 제작 시 오차를 줄일 수 있는 설계 방법 연구를 진행하였다. 테스트램프는 높은 광량의 빛을 평행하게 진행시켜야 하지만, 제작 시 중앙 빛을 제어하는 소형 반사경의 고정이 어렵다는 단점으로 인해 광량 저하가 발생하여 목표 광량을 만족하지 못하는 경우가 많다. 이러한 문제점 해결을 위해 틸트 및 디센터 시에도 성능 저하 현상을 최소화하는 방향으로 광 손실률 5% 미만의 구 소형 반사경 설계를 진행하였고, 설계 분석 결과에 따라 광학계 제작 시에도 오차 영향이 적은 소형 반사경으로 구체 형상을 제시하였다.

References
  1. J. Penny, "The roles of flame detection in AFD," Fire Surveyor 15, 25-26 (1996).
  2. G. W. Mulholland, "SFPE handbook of fire protection engineering," National Fire Protection Association, Wuincy, Massachuserrs, 3rd Edition (2002).
  3. Ministry of government administration and home affairs' Notification, "National fire safety code of automatic detection system," No. 2004-20 (2004).
  4. B. H. Lim, "A study on the improvement of the characteristic of ultraviolet infrared flame detector for fire detection," Dept. of Control and Instrumentation Eng., Graduate School of Chosun University (2006), p. 1.
  5. J. H. Jung, M. S. Kim, H. S. Lim, and Y. S. Kim, "A study on accelerated life test of halogen lamps for medical device," J. Korean Soc. Qual. Manage. 41, 659-672 (2013).10.7469/JKSQM.2013.41.4.659
  6. J. S. Park and S. H. Yi, "Speculation of optical cavity for improving optical gas sensor's characteristics," J. Korean Inst. Gas 12, 63-64 (2008).
  7. M. S. Cho, "Development of 3D reflector design method for compact metal halide street lighting," Dept. of Electrical Engeneering Graduate School, Kangwom National University (2007), p. 10.
  8. H. Haber, "Focusing properties of spherical and parabolic mirrors," Santa Cruz Institute for Particle Physics (2009), pp. 2-3.
  9. J. H. Kim, "Optical system design of mobile phone camera for sensitivity analysis," Dept. of Physics, Graduate School, Kookmin University, Seoul (2009), p. 17.
Information
  • Publisher :Optical Society of Korea
  • Publisher(Ko) :한국광학회
  • Journal Title :Korean Journal of Optics and Photonics
  • Journal Title(Ko) :한국광학회지
  • Volume : 29
  • No :6
  • Pages :233-240
  • Received Date :2018. 11. 01
  • Accepted Date : 2018. 11. 21