JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Study on the Design of a High Condensing LED Searchlight
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Study on the Design of a High Condensing LED Searchlight
Kim, Tae-Seong; Kim, Jin-Wook; Kim, Sun-Jae; Kil, Gyung-Suk;
  PDF(new window)
 Abstract
This paper dealt with the condensing technology of an LED light source that uses a parabolic reflector to replace a searchlight equipped with a xenon lamp. A ray-tracing simulation was conducted to analyze the influence of the diameter of the reflector and the size of the light source on light condensing. The combination of a parabolic reflector with a diameter of 620 mm and a focal distance of 220 mm, and a 9 mm multi-chip package (MCP) with a luminous flux of 7,000 lm showed the narrowest beam angle. The luminous intensity at the center was measured at 7.7×106 cd. The distance between the light source and the point where the illuminance was 1 lx was calculated to be 2.8 km. The power consumption of the system was 95 W, which is only 9.5% of that of the 1 kW xenon searchlight, and the beam angle was 1.03°. In a site experiment, it was confirmed that the light ray reflected from the LED searchlight proceeds forward without any diffusion because of the narrow beam angle.
 Keywords
LED searchlight;Light condensing;Luminous intensity;Beam angle;Parabolic reflector;
 Language
English
 Cited by
 References
1.
S. J. Park and Y. L. Lee, Trans. Electr. Electron. Mater., 15, 201 (2014). [DOI: http://dx.doi.org/10.4313/TEEM.2014.15.4.201] crossref(new window)

2.
E. D. Jung and Y. L. Lee, Trans. Electr. Electron. Mater., 15, 270 (2014). [DOI: http://dx.doi.org/10.4313/TEEM.2014.15.5.270] crossref(new window)

3.
M. K. Kim and J. H. Park, The Current Trend and Industrial Strategies of Next LED, Proc. of KICS Winter Conference (Korean Institute of Communications and Information Sciences, 2010) p. 635-636.

4.
C. H. Tsuei, J. W. Pen and W. S. Sun, Opt Express, 16, 18692 (2008). [DOI: http://dx.doi.org/10.1364/OE.16.018692] crossref(new window)

5.
E. R. Vidal, D. Otaduy, D. Ortiz, F. Gonzalez, F. Moreno, and J. M. Saiz, Optik, 125, 1657 (2014). [DOI: http://dx.doi.org/10.1016/j.ijleo. 2013.09.064] crossref(new window)

6.
R. Winston, J. C. Minano, and P. G. Benitez, Nonimaging Optics (Schools of Engineering & Natural Science University of California, 2008) p. 24.

7.
L. Infante and S. Maci, IEEE Antennas Wirel Propag Lett., 2, 273 (2003). [DOI: http://dx.doi.org/10.1109/LAWP.2003.820685] crossref(new window)

8.
D. Jenkins and R. Winston, J. Opt. Soc. Am., 13, 2106 (1996). [DOI:http://dx.doi.org/10.1364/JOSAA.13.002106] crossref(new window)

9.
S. Zhao, K. Wang, F. Chen, and S. Liu, International Conference on Electronic Packaging Technology and High Density Packaging, 1491 (2012). [DOI: http://dx.doi.org/10.1109/ICEPTHDP.2012.6474889]

10.
C. H. Peng, X. N. Li, L. L. Xiong, P. Zhang, X. S. Liu, J. W. Wang, and X. S. Liu, Advances in Optoelectronics and Micro/Nano-Optics, 1 (2012). [DOI: http://dx.doi.org/10.1109/AOM.2010.5713510]

11.
G. G. Gregory, Modern Hightech (2014) p. 81.