Ultraviolet muaj peb pawg sib txawv, UVA / UVB / UVC, thiab cov ntawv thov tseem ceeb sib txawv.
UVA band: wavelength 320-420nm, 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 reach the dermis layer 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 ultraviolet rays with wavelengths of 300-420nm can pass through special colored glass lamps that completely cut off visible light, and only radiate ultraviolet light centered at 365nm. Shenzhen Yinghong is used to make non-destructive flaw detection lamps, fluorescent leak detection lamps, degreasing cleaning lamps, Criminal police forensic inspection lights, laboratory inspection lights, etc. In addition, this ultraviolet light can also be used for ore identification, anti-counterfeiting verification, banknote inspection, curing, security inspection...
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.
UVA ultraviolet lub teeb yog tsuas yog siv rau kev laus thiab yellowing kuaj ntawm qhov chaw ntawm cov khoom thiab txhawb kev loj hlob ntawm cov tsiaj thiab nroj tsuag. Nruab nrab- siab mercury teeb lossis qis- siab mercury teeb nrog cov phosphor tshwj xeeb tuaj yeem siv los ua lub teeb ci. Qhov nqaim -spectrum UVB kuj tuaj yeem siv los kho tib neeg cov kab mob ntawm daim tawv nqaij, xws li vitiligo, psoriasis thiab lwm yam.
UVC band: wavelength 200 275nm, tseem hu ua luv -wave sterilization ultraviolet. Nws muaj peev xwm nkag mus tsis muaj zog tshaj plaws thiab tsis tuaj yeem nkag mus rau feem ntau pob tshab iav thiab yas. Qhov luv -wave ultraviolet rays uas muaj nyob rau hauv tshav ntuj yog yuav luag tag absorbed los ntawm ozone txheej. luv- wave ultraviolet rays yog qhov teeb meem rau tib neeg lub cev. Lub sij hawm luv luv - tuaj yeem hlawv daim tawv nqaij. Ntev -lub sij hawm los yog siab - kis tau tus mob tuaj yeem ua rau mob qog noj ntshav.
UVC ultraviolet rays muaj peev xwm ua kom tsis muaj menyuam thiab tuaj yeem siv los ua cov teeb ci ultraviolet. Lub hauv paus ntsiab lus yog tias C-wave ultraviolet rays tuaj yeem txiav tawm DNA txuas ntawm cov kab mob xws li cov kab mob thiab cov kab mob, ua rau lawv poob lawv lub peev xwm los tsim thiab ua cov kab mob bactericidal. Nws cov txiaj ntsig tau nce siab ntawm 264nm, uas yog ze heev rau lub ncov spectral uas tawm los ntawm qis - siab UV teeb. Yog li ntawd, qis- cov teeb hluav taws xob mercury feem ntau yog siv rau hauv qhov chaw uas yuav tsum tau tshuaj tua kab mob.
Ultraviolet rays hauv UVC band tuaj yeem ua rau saum npoo ntawm cov khoom siv photocatalyst nrog rau cov khoom siv catalyst kom decompose cov organic teeb meem ntawm macromolecules rau hauv dej thiab carbon dioxide. Qhov kev ua tau zoo no tam sim no tau nce ntxiv rau kev tu lub teeb hauv kev lag luam microelectronics, organic pov tseg roj degradation hauv kev lag luam tiv thaiv ib puag ncig, thiab kev lim cua hauv tsev hauv kev lag luam hauv tsev. Thiab nws tau raug pov thawj tias nws yog qhov ua tau zoo, ib puag ncig tus phooj ywg, lub zog -txuag thiab tsis muaj txoj kev kho cov pa phem thib ob.
Yog tias koj xav tau ib hom UVA / UVB / UVC LED, thov hu rau kuv: Nickole@szgmled.com.
