The wavelength range and spectral characteristics of UVC lamp beads.
UVC lamp beads, short for ULTR**IOLET C, are lamp beads that use short-wave ultraviolet rays. Because of its strong bactericidal effect, it is widely used in medical, hygiene, food and other fields. The wavelength range and spectral characteristics are important characteristics of UVC lamp beads, which determine their sterilization effect and application range.
1. The wavelength range of UVC lamp beads.
The wavelength range of UVC lamp beads is usually between 200-280 nm, with the most commonly used wavelength being 254 nm. Ultraviolet rays in this wavelength range have a strong bactericidal effect, which can destroy the DNA structure of bacteria, viruses and other microorganisms, so that they cannot replicate normally, so as to achieve the purpose of sterilization. In addition, UVC lamp beads have a short wavelength and weak transmission ability, so they are mainly suitable for surface sterilization and air purification.
2. Spectral characteristics of UVC lamp beads.
The spectral characteristics of UVC lamp beads mainly include two aspects: spectral distribution and light intensity distribution.
1.Spectral distribution.
The spectral distribution of UVC lamp beads refers to the ultraviolet output power of lamp beads in different wavelength ranges. Generally speaking, the spectral distribution of UVC lamp beads is relatively concentrated, mainly around 254 nm, so its sterilization effect is also mainly in this wavelength range. In addition, the spectral distribution of UVC lamp beads produced by different manufacturers may also vary, so it is necessary to select the right lamp bead according to the specific application needs.
2.Light intensity distribution.
The light intensity distribution of UVC lamp beads refers to the ultraviolet output power of lamp beads at different angles. Due to the strong directionality of the ultraviolet rays of UVC lamp beads, the light intensity distribution will be quite different at different angles. Generally speaking, the light intensity distribution of UVC lamp beads presents a "unimodal" or "bimodal" shape, in which the "unimodal" form lamp bead has the largest light intensity at a certain angle, while the "double peak" lamp bead has the largest light intensity at two different angles. Therefore, in practical applications, it is necessary to select the right lamp beads according to specific needs.
3. Application of UVC lamp beads.
Because UVC lamp beads have a strong sterilization effect, they are widely used in medical, hygiene, food and other fields. For example, in hospitals, the use of UVC lamp beads can sterilize and disinfect operating rooms and wards to avoid cross-infection; In food processing, the use of UVC lamp beads can sterilize and disinfect the surface of food and extend the shelf life of food. In addition, UVC lamp beads can also be used in air purification and other fields.
IV. Conclusions. As a kind of lamp bead that uses short-wave ultraviolet rays, UVC lamp beads have a strong sterilization effect and are widely used in various fields. Understanding the wavelength range and spectral characteristics of UVC lamp beads is the key to the correct use of UVC lamp beads, which can better exert their sterilization and disinfection effects. In the future, with the continuous progress of science and technology and the continuous improvement of application needs, the application prospect of UVC lamp beads will be broader.