At the "New Generation Lighting Technology Exhibition" (Tokyo Ariake International Convention and Exhibition Center, January 19-21, 2011), Cree exhibited LED "XLamp XM" with luminous efficiency up to 160lm/W. -L". The LEDs on display were the products that the company announced in April 2010. Just listed at the end of 2010.
The LED product is driven with a forward voltage of 2.9V and a standard current of 700mA. However, the luminous efficiency at this time is about 135 lm/W. 160 lm/W is the value when the flow current drops to 350 mA.
The color temperature is 5000 to 8300K. The maximum LED junction temperature is 150 °C.
This product has other features besides luminous efficiency. First, it is possible to pass a large current. "When the maximum drive current is 3000mA, the forward voltage is standard 3.35V and the beam is about 1000lm" (Cui Rui commentator). The maximum current of the original product is mostly 1500mA.
Another feature is that a light-emitting module has a diameter of 5 mm, which is twice that of the original product. Regarding this feature, Jaap Schlejen, vice president of professional lighting business of Philips Lighting in the Netherlands, pointed out in the keynote speech of the next-generation lighting technology exhibition: "By expanding the chip, the luminous efficiency can be improved. Cree and Philips Lumileds Lighting are This is in a leading position."
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