we provide customers with application support, design and documentation on using UVC LEDs in disinfection applications.

Principle of ultraviolet sterilization: through ultraviolet irradiation on bacteria, viruses and other microorganisms, destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in microbial body cells, cause DNA strand breakage, cross-linking rupture of nucleic acid and protein, and cause growth cell death and regenerative cell death, so as to achieve the effect of sterilization and disinfection. Among them, the ultraviolet disinfection with the wavelength of 253.7 nm is the best.

The most popular product in the LED industry this year is the UV disinfection products of UVC series. The last article explained in detail what UVC is and the principle of UV disinfection and sterilization. In this issue, we will take you to understand the materials we use for the mass production of UVC light source.

From the perspective of time dimension, the application direction of UVC can be divided into short-term market and medium and long-term market. The short-term market includes household air conditioner, humidifier, air purifier, intelligent garbage pass, electric toothbrush sterilization box, water dispenser, ice maker, intelligent toilet and food preservation; The medium and long-term market includes commercial air conditioners, vertical air conditioners, sterilization of mother and baby products, sterilization of overflow direct drinking water, etc.

UVC: the first choice of healthy light source UV (ultraviolet) refers to the electromagnetic wave with the wavelength between 10nm-400nm, that is, ultraviolet. According to the wavelength, ultraviolet can be divided into long wave ultraviolet (UVA), medium wave ultraviolet (UVB) and short wave ultraviolet (UVC). The wavelengths are 320-400nm, 280-320nm and 100-280nm respectively.

Ultraviolet (UV) occupies the electromagnetic spectrum between X-rays and visible light. The sun emits ultraviolet rays. However, most of them are absorbed by the earth's ozone layer. Just as visible light consists of different colors in a rainbow, the ultraviolet radiation spectrum is divided into three regions, called UVA, UVB and UVC. When sunlight passes through the atmosphere. All UVC and most UVB are absorbed by ozone, water vapor, oxygen and carbon dioxide. UVA is not filtered so obviously by the atmosphere. Their biological activity and degree of penetration into the skin are different

In Europe at the end of the 19th century, smooth beaver fur hats and silk hats prevailed among princes and nobles, affecting folk fashion. It is found that rabbit skin can also be used to make top hats with the same texture without using rare beaver skin. However, the skin and meat of rabbits are closely connected. If Hatters want to separate rabbit skin and meat, they must use a substance - mercury.