The design of solar street light / courtyard light absorbs energy from the universe, and combines with high efficiency solar panels, LEDs, and Lithium battery. It adopts advantage technics such as micro—controller, human infrared sensor and so on and combines with integrated design to achieve multiple features such as low power consumption but high brightness (SW average equals to 100W incandescent light), long lifespan and maintenance free, meanwhile with waterproof function and great thermal dissipation. It is one of our great innovation patented products.