| Title |
Development of 100[W] LED Flood Lighting with Tunable Colors and Color Temperatures |
| Authors |
Jin-Sik Youn ; Gi-Hoon Kim ; Sang-Bin Song ; Young-Cheol Lim |
| Keywords |
LED Floodlight Lighting System ; Optical ; Heat Dissipation ; Driving Circuit ; Luminaire ; Light Color ; Color Temperature ; Heat Dissipation ; C.R.I |
| Abstract |
This papers is about 100[W] discrete LED floodlight lighting system, light color and color temperature to be controlled using the 3[W] HGBA LED, is developed the product with optical, heat dissipation, circuit, luminaire and system design. The result, color temperature is changed corresponding to black body locus from 2,000[K] to 10,000[K] and The Color Hendering Index(C.R.I) is achieved from 71 to 91 by high C.R.I. Driving voltage is 90~250[Vac], circuit efficiency is 87[%], P.F is more than 93. moreover the LED lens is designt to achieve narrow, middle, wide beam angle, heat dissipation design is excuted to minimize variation of luminous output by the surroundings temperature and to ensure reliability. |