LED security light with integrated motion sensor and motion sensing lighting system

An LED security light with an integrated motion sensor comprising:

• a lamp housing, divided into a first part housing and a second part housing, wherein at least said first part housing is configured with a light diffuser;
• a light emitting unit, configured with an LED load including a plurality of LEDs installed inside said lamp housing;
• at least one condensing lens, installed at said first part housing and integrated seamlessly with said light diffuser of said first part housing;
• an infrared ray motion sensor, coupled with an infrared ray signal detection circuitry, installed inside said second part housing and positioned at a focal point determined by said at least one condensing lens;
• and
• a power control unit, to control said LED load to be turned on for emitting light or to be turned off;
• wherein said first part housing and said second part housing are coupled and fastened through a fastening arrangement to form said lamp housing for accommodating operating components including at least said at least one condensing lens, said light emitting unit, and said infrared ray motion sensor coupled with said infrared ray signal detection circuitry;
• wherein said at least one condensing lens is designed and made of a material penetrable by both infrared ray and LED light to perform a dual function of infrared ray collection and LED light diffusion;
• wherein said at least one condensing lens is designed to collect infrared ray signals generated by an intruder and to remotely converge said infrared ray signals at said infrared ray motion sensor installed in said second part housing such that said infrared ray signals are received, and wherein said infrared ray motion sensor in conjunction with said infrared ray signal detection circuitry decides whether said infrared ray signals being received represent a motion intrusion signal and then operates to activate the power control unit to turn on said LED load to perform a high level illumination for a predetermined time duration.