[ATI2008] Roma exhibited high power white LED input power 5W

Rom in the "AT International 2008" (July 2008 23 ~ 25 days, Makuhari Messe Convention Center) on display at the maximum input power white LED 5W. The average color rendering index (Ra) is approximately 72 of the approximate white light type and the Ra is higher than the high color type. Approximate white (in the CIE color table for the "0.3, 0.3)" light type products in the input current flux of 1.5A 400lm, luminous efficiency of up to 78.4lm/W. The current time flux and luminous efficiency of 1.5A with high color temperature of 5000K are 250lm and 49lm/W respectively. The package is equipped with 10 large size blue LED chip, a combination of yellow phosphor material. Package size is 15.5mm * 13.4mm * 2.6mm. The product is still in the development stage, but if the order can also be supplied. Blue LED chip manufactured by the United States CREE. In order to support the large input power, the heat dissipation of the package is improved. By encapsulating the blue LED chip on the copper substrate, the heat of the chip can be easily distributed. In addition to 5W products, but also exhibited the input power of 3W, 1W and 0.5W products. Both the approximate white light and high color. 3W and 1W products with the same size as the 5W product blue chip LED. Package equipped with the number of chips, 3W products for 6, 1W products for the 1. Luminous flux and luminous efficiency, 3W approximate white type in the input 0.9A current were 250lm and 81.7lm/W, the color temperature of 5000K high color were 165lm and 54lm/W. 1W products, the approximate white light input current in the 0.35A flux and luminous efficiency of 100lm and 86.6lm/W, respectively, the color temperature of the high color 5000K were 67lm and 58lm/W. Package size, 3W product is 14.4mm * 11mm * 2.6mm, 1W product is 11mm * 7mm * 2.45mm.

Source: Nikkei BP