The packaging of COB light sources is more like a "quasi-surface light source" than that of single-crystal packaged light source lamps. It can better facilitate secondary or tertiary optical design without entanglement in the overall lamp performance. More importantly, how much useful light is irradiated on the illuminated object, and the shadow of the object is clearer than that of single-crystal packaged or combined lamps, and the light spot has no mixed colors and mixed shadows.
Lenses can better control glare than reflective cups. Don't let excess light directly hit the human eye, which will cause problems for human health. There are appropriate means to control the light loss rate.
The improvement and improvement of the packaging process and materials of the light source can improve the reduction of the light source area, the reduction of thermal resistance, the smaller color tolerance, and the elimination of color drift. Thereby changing the heat dissipation method and volume of the lamp. To cure the disease, we must cure the root cause, and there will be no problems such as lobby lighting, high pole lighting, and what cannot replace halogen lamps above 70W to 300W (the original lamp hole size specifications must be modified). In this way, the overall lighting problem of Terminal 3 of Capital Airport can be solved.
Don't always raise questions based on superficial phenomena without proposing solutions, such as "blue light hazards" and color fade and drift. Quantum dot lighting technology and phosphor process control can effectively solve these light source problems.