| Lynk Labs Inc., a supplier of AC-LED device, light engine and power-supply technology, has recently been granted additional patents by the Australian Patent Office, Patent No. 51412AUP00, and the European Patent Office Patent No. WO 2005/084080 both of which are entitled “AC Light Emitting Diodes and AC-LED Drive Methods and Apparatus."
The AC-LED technology covered by these patents includes AC-LEDs and AC-OLEDs in the form of chips, packages, drive methods and lighting systems where applicable. The AC-LED and AC-OLED technology includes high- and low-voltage, and high- and low-frequency AC power using various drive methods.
The drive methods behind the patent depend on the AC-LED chip or package application and include 50/60- Hz high voltage or low voltage as well as high-frequency (1000 Hz or greater) power supplies including electronic transformer-type power supplies (typically operating in the 20–50 kHz range) which have been used in lighting for decades.
The patent also covers capacitive current control using RC networks to drive LEDs with AC voltage sources including using the intrinsic capacitance of an LED or LED package to drive AC-LEDs at resonance with high frequency. This could one day lead to maximizing LED-lighting system efficiency by tuning a BriteDriver AC-LED power supply to match the RLC components of a specific LED or light engine. The result could enable up to 98% system efficiency, according to Lynk.
“These new approvals are a welcome addition to a broad and diverse LED intellectual property portfolio that Lynk Labs continues to grow,” said Mike Miskin, Lynk Labs’ president and CEO. “Lynk Labs AC-LED technology is now being integrated into many products by a number of large OEMs in various markets and AC-LED technology is now becoming a leading solution in the future growth of the LED lighting market,” said Miskin.
|
