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A Study on Light Quality of LED for Control of Light Intensity  

Park, Sang-Hee (Kumoh National Institute of Technology, Department of Mechanical Engineering)
An, Jun-Chul (Kumoh National Institute of Technology, Department of Mechanical Engineering)
Heo, Jung-Wook (Rural Development Administration, National Academy of Agricultural Science)
Choi, Han-Ko (Kumoh National Institute of Technology, School of Electronic Engineering)
Choi, Sung-Dae (Kumoh National Institute of Technology, Department of Intelligent Mechanical Engineering)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.11, no.6, 2012 , pp. 175-182 More about this Journal
Abstract
Light characteristics of the monochromatic red(R), blue(B), green(G) and white(W) and the mixed LED (B-R LED) were investigated by light control a Spectrometer-MMS1 and an illuminometer. The power consumption of each LED was 1W and R LED has five wavelength bands(600nm, 640nm, 660nm, 680nm, 750nm). The light intensity of each LED was changed in a range 10~100%. As a results, the wavelength and the spectrum distribution of R LED increase with increasing light intensity but the wavelength of B, G, W LED decreases. It was found that illumination of each mononochromatic and B-R LED increases linearly with increasing light intensity. It was confirmed that the illumination intensity of R-B light has greater values than those obtained by monochromatic light at the same conditions.
Keywords
Light Emitting Diodes; Light Quality; Light Control System; Monochromatic Light; Mixed Light;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Heo. J. W., Lee. C. W., Chakrabarty. D. and Paek. K. Y., 2002. "Growth response of marigold and salvia bedding plants as affected by monochromic or mixture radiation provided by a Light-Emitting Diode(LED)", Plant Growth Regulation, Vol. 38, pp. 225-230.   DOI   ScienceOn
2 Yoon, C. G., and Choi, H. K., 2011. "A Study on the Various Light Source Radiation Conditions and use of LED Illmination for Plat Factory", Journal of KIIEE, Vol. 25, No. 10, pp. 14-22.
3 Um, Y. C., Oh, S. S., Lee, J. G., Kim, S. Y. and Jang, Y. A., 2010. "The Development of Container-type Plant Factory and Growth of Leafy Vegetables as Affected by Different Light Sources" Journal of Bio-Environment Control, Vol. 19, No. 4, pp. 333-342.
4 Heo, J. W., Lee, Y. B., Lee, D. B. and Chun, C. H., 2009. "Light Quality Affects Growth, Net Photosynthetic Rate, and Ethylene Production of Ageratum, African Marigold, and Salvia Seedlings", Kor. J. Hort. Sci. Technol. Vol. 27, No. 2, pp.187-193.
5 Shin. K. S., Murthy, H. N., Heo. J. W., Hahn. E. J. and Paek, K. Y., 2008. "The effect of light quality on the growth and development of in vitro cultured Doritaenopsis plants" Acta Physiol Plant. Vol. 30, pp. 339-343.   DOI   ScienceOn
6 Heo. J. W., Chakrabarty. D. and Paek. K. Y., 2004. "Longevity and quality of cut 'Master' carnation and 'Red Sandra' rose flowers as affected by red light", Plant Growth Regulation, Vol. 42, pp. 169-174.   DOI
7 Heo. J. W., Lee. C. W., Murthy. H. N. and Paek. K. Y., 2003, "Influence of light quality and photoperiod on flowering of Cyclamenpersicum Mill. cv. 'Dixie White'", Plant Growth Regulation, Vol. 40, pp. 7-10.   DOI   ScienceOn