The new scheme is white 5700K-6500K color display hongdae 80 does not reduce the luminous flux

At present, the mainstream white LED on the market are made of blue chip to stimulate yellow phosphor, which is relatively simple and low cost, so it has been widely used. However, the production of such products are not high color rendering, then, how can we make a significant product?

We know that the spectra of all rounder can reach high, make high color products. Three primary colors R, G, B after the color of the spectrum of the three kinds of color is very high, so on the object after the diffuse reflection of the human eye will have a very realistic effect. And we are currently using the blue chip to stimulate the yellow phosphor, there are only two kinds of spectrum (blue and yellow), the lack of red spectrum, which led to the color rendering is not high enough. At present, the excitation efficiency of yellow phosphor is higher than that of red phosphor, so we have to add some red phosphor into the yellow phosphor to improve the. But note that: the efficiency of adding red phosphor after the blue chip to stimulate the yellow fluorescent powder will be relatively reduced, this is because the red spectrum is too long, the other spectral coverage, so add pink color rendering index increased at the same time also reduces the luminous flux.

With the announcement of the U.S. energy star, technical requirements are more stringent, the industry is relatively competitive, and soon the white light is very easy to do Ra80. But the warm white light to highlight the same time at the same time high or difficult. The pursuit of warm white highlights high, the industry's usual practice is to use yellow fluorescent powder mixed with red fluorescent powder to achieve, but the product to do so relatively low luminous flux. Fortunately, the market has seen a relatively awesome fluorescent powder, such as the Taiwan Hongda Trade Limited by Share Ltd (Japan is Asia Pacific special chemical agents) orange phosphor YLO-802B the latest (the peak wavelength of 605nm) and YLO-804B (peak 615nm). These two models of 460nm with about 3000K-4000K chips with warm white light can be achieved Ra80 and does not reduce the luminous flux, and stability, consistency is also very good.

5700K-6500K is white and yellow color temperature can be hongdae Y-996 YLO-804B white collocation 80 high color display, can also according to the chip level with YG-535 wavelength green powder and YLO-804B YAG ingredients hongdae collocation do white refers to the 80 light flux does not drop significantly effect.

This is currently on the market of silicate phosphor composition can not compare with that of silicate powder composition due to the characteristics of high temperature, damp heat itself, will often appear color temperature drift, fluorescent powder which is the future may be eliminated, new products will be replaced. With the continuous development of materials industry, the market of high color index products demand more exuberant, hongdae believe that soon there will be more awesome products in expressive CRI 85, June 9, 2012 hongdae Trade Co. Ltd will participate, will display a significant 85 scheme and physical samples, welcome industry friends to visit.