When the current acts on the chip through the wire, the electrons will be pushed to the P area, where the electrons recombine with the holes, and then they will emit energy in the form of photons. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction.
However, aluminum is relatively cheap. After a reasonable design, the emitted light will become parallel rays parallel to the optical axis of the lamp. To The semiconductor wafer is composed of two parts, one part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor, which is mainly electrons.
The led is not limited by the starting temperature, it can be started temporarily, usually several MS, and can reach the full luminous flux output temporarily. When the light reaches the outer side,China Home decorative lighting the incident angle of the light on the outer side will be greater than the critical incident angle of the material of the condenser, so it is impossible to refraction.
From the perspective of the city, the perspective of the landscape, the perspective of the street, the perspective of the people, to think about the value of the existence of light, to create a suitable LED modeling lighting environment, to add charm to the city. Especially at night, there are many people watching led modeling lights.
There are also ceramics and high thermal conductivity plastics, and the price is not much different. The outer side and inner side of the condenser cup are designed to have a certain included angle. Led can use DC low voltage power supply, which is safe and reliable. Copper-aluminum composite heat dissipation is good, almost no requirement for water quality, and high cost.