What is the light attenuation of led fluorescent tubes? What is the chip and phosphor of led?

the biggest determinant of light attenuation is the temperature of the LED. If the heat dissipation is not done well, the temperature will be too high and the attenuation will be very fast. Generally speaking, the light attenuation of the LED is in an ideal state. If it is a fluorescent lamp, because of the use of multiple LEDs, the heat dissipation, the spacing between LEDs, the current and the lamp shell should be considered.

the chip of LED is used for photoelectricity. A sealed LED is coated with phosphor powder and has a LENS outside. The function of phosphor is to make the color packaged by LED become the color you want, such as white light. At present, there is no white light chip. The way to produce white light LED is to use blue chip and yellow phosphor to make white light.

riya has patents on LED chips and phosphors, as well as packaging patents, generally speaking, that is, packaging patents, but it is not the only one. For example, lumileds, Cree and OSRAM under philips, which are relatively large in the world, all have their own patents, especially Lumileds, because it is the first one to package high-power LEDs, so the description of its packaging patents has great limitations for other companies.

Of course, if you want to do packaging without touching the patents of other companies, you should first be familiar with the contents of the patent documents, and then bypass it or pay for the patent right

At present, LED fluorescent tubes are made of two types of LEDs: straw hat LED and patch LED.

LED daylight light decay: about 3% after 1 hours. Depending on the packaging technology and chip quality, it may increase.