What is the working principle of high-pressure sodium lamp?
1. Working principle of high-pressure sodium lamp: arc tube, which is the most important part of high-pressure sodium lamp, is the key to the operation of high-pressure sodium lamp. The sodium vapor generated during the operation of the arc tube is highly corrosive, so the general sodium resistant glass cannot be used, and most of them will use translucent polycrystalline alumina. This material has good high-temperature resistance and corrosion resistance, and its light transmission performance is also very good.
2. Working principle of high-pressure sodium lamp: due to the influence of material factors, if high-pressure sodium lamp is made of single crystal alumina ceramic tube, its price will be relatively expensive, so it is rarely made of single crystal alumina ceramic tube. The arc tube in the high pressure sodium lamp is composed of polycrystalline ammoniated aluminum ceramic, electrode and solder ring. Then a certain amount of sodium amalgam is added, and a certain amount of xenon is also added, which is to improve the stability of the high pressure sodium lamp and the starting ability of the bulb.