Secondary Optical Design of LED Panel Light System. The design of the optical system mainly includes the following aspects: ① Determine the shape of the optical system, the number of LEDs and the size of the power according to the lighting object and luminous flux demand; ② Design several LED luminous tubes as point light source, annular light source or The secondary light source of the surface light source calculates the illumination optical system according to the combined secondary light source. It is very important to control the light distribution of each LED tube on the secondary light source which constitutes the illumination optical system design.
LED panel lights to improve color. Currently white LED (blue led) commonly used blue LED superimposed by the blue light-emitting yellow-emitting yttrium aluminum garnet (YAG) phosphor, synthesized into white. The human eye on the sensitivity of color difference is much higher than the sensitivity of the light intensity, the lighting, the color of the light source is often more important than the luminous efficiency. So add the appropriate amount of red fluorescent powder and can maintain high luminous efficiency is the LED white light in an important issue.