Según diferentes efectos biológicos, los rayos ultravioleta se dividen en cuatro bandas según la longitud de onda:
UVA band, wavelength 320 400nm, also known as long-wave dark spot effect ultraviolet. It has strong penetrating power and can penetrate most transparent glass and plastics. More than 98 percent of the long-wave ultraviolet rays contained in sunlight can penetrate the ozone layer and cloud layer to reach the earth's surface. UVA can directly reach the dermis of the skin, destroy elastic fibers and collagen fibers, and tan our skin. The UVA ultraviolet rays with wavelength of 360nm are in line with the phototaxis response curve of insects, and can be used to make trap lights. UVA rays with wavelengths of 300-420nm can pass through special colored glass lamps that completely cut off visible light, and only radiate near-ultraviolet light centered at 365nm, which can be used in ore identification, stage decoration, banknote inspection and other places.
UVB band, wavelength 275 320nm, also known as medium wave erythema effect ultraviolet. Medium penetrating power, its shorter wavelength part will be absorbed by transparent glass, most of the medium-wave ultraviolet rays contained in sunlight are absorbed by the ozone layer, and only less than 2 percent can reach the earth's surface, which is especially strong in summer and afternoon. UVB ultraviolet rays have an erythematous effect on the human body, which can promote the metabolism of minerals and the formation of vitamin D in the body, but long-term or excessive exposure will tan the skin and cause redness and peeling. Ultraviolet health lamps and plant growth lamps are made of special transparent violet glass (which does not transmit light below 254nm) and phosphors with a peak value around 300nm.
Banda UVC, longitud de onda 100 275nm, también conocida como ultravioleta de esterilización de onda corta-. Tiene la capacidad de penetración más débil y no puede penetrar la mayoría de los vidrios y plásticos transparentes. Los rayos ultravioleta de onda corta- contenidos en la luz solar son absorbidos casi por completo por la capa de ozono. Los rayos ultravioleta de onda corta-son muy dañinos para el cuerpo humano. La exposición a corto-plazo puede quemar la piel. La exposición a largo-plazo o de alta-intensidad también puede causar cáncer de piel. Las lámparas germicidas ultravioleta emiten rayos ultravioleta de onda corta-UVC.
Banda UVD, la longitud de onda es inferior a 100 nm, también conocida como ultravioleta de vacío.
uv tube light
origen: China
Marca: GUANYI
voltaje: 220V
Certificate: CE ROHS
longitud de onda (nm): 254
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