LED ILLUMINATION SYSTEM

摘要

PURPOSE: An LED(Light Emitting Diode) lighting system is provided to improve the optical efficiency by adopting the PWM(Pulse Width Modulation) mode using the decay time of the fluorescent substance or the phosphorescent substance. CONSTITUTION: An LED lighting system comprises a driver IC(11), a microcomputer(12), a constant current controller(13), and a LED(14). The driver IC uses the decay time of the fluorescent substance or the phosphor. The microcomputer is connected to the driver IC. The microcomputer offers a PWM dimming signal. The constant current controller is connected to the driver IC. The constant current supplies a constant current to the LED. The LED is arranged between the driver IC and the constant current controller.