Как UVC LED светлината (254/365nm) вреди на човешкото тяло и как да го предпазим?
За да разберем по-интуитивно вредата от ултравиолетовите лъчи върху човешкото тяло, нека първо да представя основните познания за ултравиолетовите лъчи (UV). Ultraviolet (UV) съдържа три братя: UVA/UVB/UVC.
Всяка група има различна личност. Тук се извършват само UVA и UVC; 254nm принадлежи към UVC лентата, докато 365nm принадлежи към UVA лентата. Ултравиолетовата светлина има къса дължина на вълната, но висока енергия. Увреждането на човешкото тяло е различно от двете, затова ще говоря за тях отделно.
The comparison chart of ultraviolet sterilization ability of different wavelength bands First, 254nm: 254nm is the band with the best sterilization effect, which belongs to the deep ultraviolet band, which is what we usually call UVC. This band is mainly used for sterilization. By destroying the genetic material such as DNA of bacteria and viruses, UVC changes the genetic transcription characteristics of cells, so that the organism loses the ability to synthesize and reproduce proteins, and can kill more than 99 percent of bacteria in a very short period of time. You need to be extra careful when you are in contact with this frequency band in daily operations, and the human body is very harmful. In the eye in particular, after UVC is absorbed by the cornea, the DNA of the corneal epithelial cells is damaged, the cells die, and the underlying nerve plexus is exposed. After the nerve is exposed, pain is transmitted directly to the brain until new corneal epithelial cells grow and re-cover the nerve plexus. However, although the UVC force value is very strong, it also has weaknesses. Its biggest disadvantage is its weak penetration ability, which can be blocked by ordinary plastic and glass. If you are accidentally exposed to ultraviolet rays in this band, it is best to go to the hospital and ask your doctor for advice. After talking about 254nm, let's talk about 365nm: 365nm is UVA, which belongs to shallow ultraviolet. UVA can directly pass through the clouds and reach the earth, so the sun we are in daily contact with contains a lot of UVA. This band is mainly used for curing in daily life, and the main application fields are printing, nail art, textile and so on. When we look at the teeth, this light uses UVA.
В сравнение с UVC, UVA е относително мек и не причинява остро увреждане на очите. Но също така е вреден за тен, набръчкана от слънцето кожа и ускорява прогресията на катаракта и свързаната с възрастта{0}}дегенерация на макулата. Ето защо, за 365nm UV лампа, направете слънцезащитен крем и не гледайте директно в очите си!
