Lanway IPR Services
Lighting apparatus
A lighting apparatus includes a light source, a power converter, an optical coupler, a light sensor, a frequency detector and a controller. The light source includes a LED module. The light switch is connected to the LED module in series. The light switch selectively turns on and turning off the LED module according to a second PWM signal. The power converter converts an alternating current power source with a working frequency to a direct current power. The optical coupler controls the power converter to work in a constant current mode or a constant voltage mode according to a first PWM signal.
XIAMEN LEEDARSON LIGHTING CO., LTD
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Wei Qiqiang Yibin
Liu Lin Chen