When the amber LED lighting China and green LED conversion phosphor combination of warm white high CRI and high efficiencyon August 10th, 2012 at 1:36 AM
When the amber LED lighting China and green LED conversion phosphor combination of warm white high CRI and high efficiency.
OSRAM Opto Semiconductors (OSRAM Opto Semiconductors) solid-state lighting products, product marketing manager Mark Dyble said, the potential mix of other colors of the monochromatic LED and phosphor conversion LEDs (PC-LEDs) of high CRI and high efficiency. LED Trade Fair last week to demonstrate the method.
Said Mark Dyble, color mixing (eg, OSRAM launched Brilliant Mix) provide another model to achieve high-end retail applications such as high CRI. He explained that the current warm / neutral light LED and high CRI (> 90) often lead to a loss of 75 lm / W light efficiency. However, if the multi-chip board chip or chip array, the monochrome LED (amber) and green phosphor conversion LED combination of 90 lm / W light efficiency (in the LED, at 2700K the case levels can reach 110 lm / W).
Mark Dyble pointed out that this method requires some careful consideration. For example, the light hybrid combinations need to obtain the necessary color uniformity. In addition, the correlated color temperature (CCT) above room temperature or change. Can be installed in order to improve stability, light and temperature sensors can also use the compensation circuit.
But, Mark Dyble think, the color mixing programs than those over-drive the LED and the early light failure mode is better. In addition, from the user’s position to consider more cost-effective transmission ratio by adjusting the monochrome PC-LED, between efficiency and color rendering. “We can do this one of the reasons we have been able to line of monochrome LED power,” said Mark Dyble.