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As mercury lamps have withdrawn from the market, traditional LEDs usually use SMD lamp beads arranged in a row to solve the problem of thermal management in high-power lamp applications. At the same time, due to the scattered arrangement of light sources and the large luminous area, it is difficult to achieve light cutoff to meet the requirements of airport flight safety, resulting in a large amount of spill light above 0 degrees horizontally, especially the glare towards the control tower, which inevitably affects the tower's observation of aircraft takeoffs and landings. The lights need to be confined to the apron. The high-power COB interview, small luminous surface and high power allow each light source to be independently designed with a light-cutting structure to prevent glare, effectively solving the problem of spill light and promoting environmentally friendly lighting applications

Songshan Lake Materials Laboratory (hereinafter referred to as the "Laboratory") is located in Dongguan, an important node city in the Guangdong-Hong Kong-Macao Greater Bay Area, adjacent to the China Spallation Neutron Source.