Abstract: A dimmable LED lamp is provided, including an accessory, an end cap, and LEDs. The accessory includes a wireless receiver and an IR emitter. The wireless receiver receives a wireless dimming signal. The IR emitter transmits an IR signal corresponding to the wireless dimming signal. The dimmable LED lamp includes an end cap. The end cap includes an IR sensor, an MCU, and a driver circuit. The IR sensor receives the IR signal and transmits a corresponding sensor signal. The MCU receives the sensor signal and transmits a corresponding dimming control signal. The driver circuit receives an AC mains power signal from the AC mains power supply, receives the dimming control signal, and generates an LED power signal based on the AC mains power signal and having a duty cycle corresponding to the dimming control signal. The LEDs receive the LED power signal.

Abstract: The present disclosure is directed to methods and apparatus for estimating end-of-life for solid state lighting. By tracking actual operating parameters, such as the temperature (330) and current (320) supplied to a lighting fixture (100) over time and comparing it with estimated life time prediction data (370) stored in a look-up table (360), a precise prediction of the lifetime status of the lighting fixture may be obtained.