Fig. 1. Symmetric sports lighting.
Fig. 2. Asymmetric sports lighting.
Fig. 3. XHP50-2 LED of CREE (top, side, view).
Fig. 4. Reflector shape.
Fig. 5. Example of LightTools polar 2D.
Fig. 6. Distribution of light and illuminance in all directions.
Fig. 7. 3D view of lamp with backlight.
Fig. 8. Asymmetric angle.
Fig. 9. Layout of upside reflector.
Fig. 10. Equation of light distribution and reflector tilt angle.
Fig. 11. Design of upside reflector using fitted curve.
Fig. 12. Design of upside reflector.
Fig. 13. Result of upside reflector.
Fig. 14. Layout of edge in reflector.
Fig. 15. Edge in reflector angle.
Fig. 16. Design of reflector with added edge.
Fig. 17. Illuminance comparison of each designed reflector.
Fig. 18. Layout of side reflector.
Fig. 19. Equation of light distribution and reflector tilt angle.
Fig. 20. Flat side reflector and curved side reflector.
Fig. 21. Illuminance comparison of designed side reflectors.
Fig. 22. Design of final reflector.
Fig. 23. Result of final reflector.
Fig. 24. Evaluation area of tennis court.
Fig. 25. Simulation result of Luminaires placement.
Table 1. Calculation of tilt angle in upside reflector
Table 2. Calculation of tilt angle in backlight reflector
Table 3. Calculation of tilt angle in side reflector
Table 4. European standard indoor tennis light class
Table 5. Maintenance factor of lighting
Table 6. Simulation result of Luminaires placement
참고문헌
- M.-W. Lee and H. Kim, "LED optical design for asymmetrical light distribution realization," J. KIIEE 23, 27-30 (2009).
- Y.-W. Lee, "Comparative characteristics of the high capacity LED's electric power consumption for substituting the metal-halide lighting fixtures," Chungnam National University (2013), pp. 49-56.
- B.-M. Yoon, S.-J. Lee, G.-S Choi, J.-C. Lee, and D.-H. Park "Optical property of LED module along reflector material by simulation," KIEE 2006(7), 1669-1670 (2006).
- M.-W. Lee, "LED secondary optics design of asymmetrical light distribution for road lighting luminaire," J. KIIEE, 28, 35 (2009).
- T.-Y. Park, J.-S. Kim, H.-S. Kim, and M.-S. Oh, "A study of shielding plate development for backlight control: with a main focus on 50W misaligned LED luminaires," Kangwon National University (2014), pp. 1-8.
- J.-S. Lee, H.-J. Park, J.-H. Seo, Y.-J. Jeong, S.-Y. Kim, H.-W. Ra, and M.-S. Jung, "A study of reflector design method for low road illumination," Korean J. Opt. Photon. 28, 273-280 (2017).
- European Committee for Standardization, "Light and lighting - sports lighting," British Standards Institution, 389 Chiswick High Road, London, United Kingdom (2008), p. 26.
- I.-C. Park, "(A) Study on the lighting placed in small indoor playground," Hongik University (2014), pp. 19-24.