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Guangmai Technology is professional in making theSMD 3535 uvc led 260-270nm for water purify.
Èske UVC danjere pou kò moun ak kijan pou pwoteje li?
This is a more classic problem. UVC deep ultraviolet is not harmful to human skin, but it is more harmful to human eyes. A typical UVC-LED's ultraviolet light with a wavelength of 275 nm is almost 97% absorbed by the stratum corneum of the human skin, and more than 99.9% is absorbed by the stratum corneum and epidermis, and very little light hits the dermis. Ultraviolet rays only affect the dermis to cause skin cells to become cancerous. Therefore, it is generally believed that UVC has little effect on human skin. Of course, baby skin, including some human skin, has a thinner stratum corneum, and its resistance to UVC ultraviolet rays is even worse. Human eyes have no cuticle protection. Direct UVC ultraviolet rays will cause lens and corneal disease. Therefore, it is forbidden to look directly at the lit UVC-LED lamp beads.
The shorter the wavelength of light, the worse the penetration ability, which is determined by the wave-particle duality of light. Of course, when it comes to matter, it is also related to absorption. Is UVC harmful to human body? The easiest answer is, yes, do not expose to UVC ultraviolet rays. But in fact, there is a big misunderstanding in this, that is, UVA, such as 365, 385, 395 is very harmful to human skin, because this wavelength of ultraviolet light can penetrate the human dermis, causing skin cell cancer.
Sepandan, UVC reyon iltravyolèt, tankou 275nm, gen yon pwofondè transmisyon pi fon nan epidèm granmoun yo. Apre yo fin antre nan stratum korne a, plis pase 97% nan enèji a pral absòbe, ak enèji a ki finalman antre nan dèrm la se pa menm 0.1%. Se poutèt sa, yo dwe egzak, UVC gwo twou san fon iltravyolèt pa danjere pou po moun, ak je moun san yo pa stratum korne yo pi danjere. Natirèlman, ekspoze alontèm nan limyè fèb se tou danjere nan kò imen an.
Se konsa, pa' pa bezwen pè avèg UVC pwofon reyon iltravyolèt, paske domaj nan po kout tèm ka inyore; pa'pa eseye pwòp risk ou, fikse nan dirije a pral definitivman lakòz blesi nan je.
Ki jan yo chwazi materyèl la fenèt limyè pou aplikasyon pou gwo twou san fon ki ap dirije iltravyolèt?
Lè konsepsyon konplo a, kliyan an erè kwè ke plastik komen transparan tankou Acrylic nan konsepsyon an nan plan limyè vizib ta ka itilize tou kòm fenèt limyè pou UVC-LEDs, sa ki lakòz zewo esterilizasyon. Sitiyasyon sa a pa estraòdinè. Prete konsèp nan enèji kosyon, koyefisyan absòpsyon nan lyezon CH ak CO nan UVC ak UVB gwoup yo trè wo, kidonk plastik trè mens ka absòbe prèske tout reyon iltravyolèt gwo twou san fon. Kwen absòpsyon nan polystyrène òdinè ak Acrylic se sou 385nm, ak transmisyon nan 275nm se deja egal a zewo.
Ki kalite materyèl yo ta dwe itilize fè fenèt la limyè nan gwo twou san fon iltravyolèt dirije a? Safi se substra ki ap dirije gwo twou san fon-iltravyolèt la ak sifas ki emèt limyè nan chip la, kidonk li ka itilize kòm yon fenèt limyè, men materyèl la ak depans pwosesis yo wo. Gen anpil kalite kwatz. Gen twa kalite komen nan vè optik, JGS123. Li rekòmande pou UVC-LED 275nm ka sèvi ak kwatz spesifikasyon JGS2, ak LED 265nm oswa mwens bezwen sèvi ak kwatz JGS1 oswa safi. Sa a tou aplike nan materyèl la lantiy nan pake a chaplèt lanp.
SMD 3535 uvc led 260-270nm for water purifygwosè pake:
SMD 3535 uvc dirije 260-270nm pou aplikasyon pou pirifye dlo
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