Lub wavelengths ntawm kev lag luam muaj UVA teeb fixtures feem ntau poob ntawm 365 thiab 405 nm, nrog 365 thiab 395 nm yog cov kev xaiv nrov tshaj plaws. Nyob rau hauv UV dub lub teeb thiab fluorescence nrhiav pom daim ntawv thov, nws yog feem ntau coj mus rau hauv tus account thaum txiav txim siab ntawm 365 nm thiab 395 nm.
Lub wavelengths ntawm lub teebUV spectrum yog 365 nm thiab 395 nm. Vim tias lawv yuav ua rau qee yam khoom fluoresce lossis tsim lub teeb pom kev, cov wavelengths, uas nyob hauv thaj tsam UVA, qee zaum hu ua "blacklight."
Tab sis yog 365 nm thiab 395 nm siv rau tib yam? Dab tsi ua rau lawv txawv ntawm ib leeg? Cia peb tshawb xyuas qhov no ua ke.
Dub thiab UVA Teeb
Blacklight yog ib yam tshwj xeeb ntawm UV teeb pom kev zoo uas tsim kom pom qhov txawv los ntawm kev siv feem ntau UVA teeb. UVA lub teeb yog siv nyob rau hauv blacklight illumination los txhawb ib yam khoom fluorescent zoo, uas ua rau lub emission ntawm pom lub teeb.
Cov khoom siv fluorescent zoo li cov xim fluorescent, fluorescent inks, thiab cov ntawv nplaum fluorescent tuaj yeem ua rau pom kev zoo nkauj hauv qhov tsaus ntuj los ntawm cov xim ci ntsa iab thaum raug lub teeb dub. Lub teeb dub tshwj xeeb yog nrov hauv kev lom zem, kho kom zoo nkauj, thiab kev lag luam tshwj xeeb vim lawv cov nyhuv.
UVA lub teeb muaj zog nkag mus rau lub zog thiab lub zog pheej yig ua rau nws lub teeb pom kev zoo rau lub teeb dub. Lub ultraviolet A band, uas muaj lub wavelength ntawm 315 thiab 400 nanometers thiab raug suav tias yog lub teeb pom kev, raug xa mus rau UVA lub teeb nyob rau hauv lub hnub ci spectrum.
Vim li cas tus nqi wavelength tseem ceeb heev txawm tias lub teeb nrog wavelengths tsawg dua 400 nm yog undetectable rau tib neeg lub qhov muag?Qhov no yog vim qhov tseeb tias UV lub teeb daim ntawv thov qeb yog txiav txim siab los ntawm nws qhov wavelength. Piv txwv li, 365 nm thiab 395 nm yog ob qho tib si hauv UVA qeb, tab sis 300 nm yog nyob rau hauv qeb UVB thiab 270 nm yog nyob rau hauv qeb UVC.
1. Cov ntawv thov rau UVA teeb muaj xws li fluorescence nrhiav pom, pom cov cim kev ruaj ntseg, cov nyiaj cuav, ntshav thiab cov kua dej hauv lub cev, thiab lwm yam; kho inks, coatings, kua nplaum, thiab resins; thiab ntes kab.
2. UVB teebKev siv suav nrog kev kho mob ntawm daim tawv nqaij xws li psoriasis thiab eczema, kho mob raws caij nyoog (SAD), kho tshuaj kho mob rau lwm yam teeb meem ntawm kev puas siab puas ntsws thiab lub cev tsis zoo, thiab tanning los ua kom lub cev tsis muaj hnub ci.
3. Daim ntawv thov rauUVC teebsuav nrog kev ua zaub mov, kev kho dej, kev ua kom huv hauv huab cua, tshuaj tua kab mob, thiab tshuaj tua kab mob thiab kom tsis muaj menyuam.
365nm VS 395 nm
Txawm hais tias tsuas muaj 30 nm sib txawv ntawm 365 thiab 395 nm UVA teeb, uas ob qho tib si tsim lub teeb dub thiab kho cov teebmeem, 395 nm UV lub teeb zoo li ntshav rau lub qhov muag tsis pom vim nws ze rau pom lub teeb, lossis violet, tshaj 365 nm.
365 nm UV hluav taws xob tshwm li xim xiav-dawb xim rau qhov muag tsis pom vim nws mus "qhov tob" rau hauv qhov pom tsis pom UV spectrum tshaj 395 nm, muaj lub teeb pom kev tsawg, thiab muaj qhov luv luv wavelength.
Vim li cas thiaj pom lub teeb ntawm 365 nm thiab 395 nm txawv ntawm ib leeg?395 nm tsis yog tsuas yog emit lub teeb nrog ib tug wavelength ntawm 395 nm, thiab 365 nm tsis tsuas emit lub teeb nrog ib tug wavelength ntawm 365 nm.
Txawm hais tias lawv kuj tsim lub zog tseem ceeb nyob ze ntawm 350 nm txog 380 nm thiab 390 nm txog 410 nm ntau, 365 nm thiab 395 nm UV teeb tawm lub zog siab tshaj plaws ntawm 365 nm thiab 395 nm, raws li. Nrog rau ob sab ntawm 365 nm thiab 395 nm spectra, lub zog ntawm cov wavelengths ploj zuj zus.
Vim tias feem pua ntawm 395 nm spectrum tso zis ntau dua nyob rau hauv thaj chaw pom violet dua li ntawm 365 nm, nws ua rau pom kev pom muaj zog dua thiab tuaj yeem siv rau hauv cov teeb pom kev zoo nkauj lossis chaw lom zem.
Ntawm qhov tod tes, lub zog tsawg dua tam sim no thaum 365 nm spectral emission nyob ze qhov pom 400 nm. Vim tias qhov sib txawv no, 365nm LED yog qhov kev xaiv pom zoo rau feem ntau ntawm UV-A daim ntaub ntawv.
Vim muaj kev txwv nyob rau hauv LED tus tsim los yog cov khoom zoo, ib tug 365 nm LED yuav emit ib tug tsawg npaum li cas ntawm pom "kua" los yog hluav taws xob tshaj lub 365 nm wavelength, txawm lub fact tias lub wavelength no tob nyob rau hauv lub invisible spectrum.
Es tsis txhob ua cov ntshiab UV tso zis ntawm lub hom phiaj ib wavelength ntawm 365 nm, cov khoom pom no tej zaum yuav nyob rau hauv lub xiav los yog dawb spectral cheeb tsam, muab lub illumination koj pom ib tug drab xiav-dawb xim.
Yog li ntawd, txhawm rau txo qhov cuam tshuam ntawm lub teeb pom kev "kua paug" thiab tau txais UV cov zis los ze zog rau cov ntshiab 365nm, nws yuav tsum tau siv cov khoom zoo dua qub, ua haujlwm ua haujlwm LED rau cov kev siv tshwj xeeb, tshwj xeeb yog cov uas xav tau qhov tseeb UV tso zis.
365nm rau kev kuaj pom fluorescence
Thaum raug UV lub teeb ntawm 365 nm, fluorescent dyes thiab cov cim, cov ntawv nyiaj thiab cov cim kev ruaj ntseg, cov zaub mov thiab cov pob zeb, cov khaub ncaws dawb, thiab cov tshuaj ntxuav hniav ntxuav hniav dawb nqus lub zog loj tshaj plaws thiab rov ua dua nws zoo li cov fluorescence. Qhov no txhais tau hais tias thaum cov ntaub ntawv no pom ntawm 365 nm, cov nyhuv fluorescence tau tshaj tawm thiab muaj zog.
Lub teeb pom kev tsaus nti ntawm 395 nm
Ntawm 395 nm, UVA teeb muaj lub ntsej muag liab liab xwb. Cov ntawv thov uas xav tau qhov sib npaug ntawm fluorescence thiab visibility, nrog rau cov chaw lom zem thiab teeb pom kev zoo, feem ntau siv cov xim no.
Piv nrog rau luv luv 365nm UVA wavelength, 395nm UVA wavelength tsis tshua muaj zog thiab sib piv tsis muaj teeb meem. Nws feem ntau tsis mob hnyav rau ib puag ncig lossis tib neeg thaum muaj kev tiv thaiv zoo los ntawm UV rays.
