TXAUS SIAB RAU ULTRAVIOLET LED APPLICATIONS THIAB CEEB TOOM

TXAUS SIAB RAU ULTRAVIOLET LED APPLICATIONS THIAB CEEB TOOM

Nyob rau hauv lub electromagnetic spectrum, pom lub teeb precedes ultraviolet lub teeb, thiab x-rays raws li ultraviolet lub teeb. Txawm li cas los xij, ntau lub lag luam optoelectronic tseem suav tias lub wavelengths siab li 430 nm kom nyob rau hauv UV ntau. Qhov ntau ntawm wavelengths uas suav hais tias yog ultraviolet yog piav raws li nyob nruab nrab ntawm 10 nm thiab 400 nm. Txawm hais tias feem ntau ntawm lub teeb tawm los ntawm UV qhov chaw tsis pom ntawm tib neeg lub qhov muag, qhov teeb pom kev no tseem tau muab lo lus "ultraviolet" vim tias "violet" xim nws tsim nyob rau hauv qhov pom ntawm electromagnetic spectrum.

UV-A, UV-B, thiab UV-C yog qhia los ntawm lawv cov xim nyob rau hauv no spectrum.

Nyob rau ob peb xyoos dhau los, UV LEDs tau nyiam qhov nthuav dav heev. Qhov no tsis yog tsuas yog qhov tshwm sim ntawm kev nce qib hauv kev tsim cov khoom siv hauv lub xeev UV, tab sis kuj yog qhov tshwm sim ntawm kev xav tau ntau ntxiv rau ecologically lees txais txoj hauv kev tsim cov teeb ci UV, uas tam sim no tau tswj hwm los ntawm mercury teeb. Tshwj xeeb, qhov kev ntshaw no tau ua rau kev txhim kho cov khoom siv hauv lub xeev UV. Kev xaiv tam sim no ntawm UV LEDs muaj nyob rau hauv kev ua lag luam rau optoelectronics suav nrog cov khoom siv nrog wavelengths xws li nyob ib ncig ntawm 265nm txog 420nm thiab ntau hom pob ntawv sib txawv, xws li dhau-qhov, nto mount, thiab COB (Chip-On-Board) configurations. Muaj ntau hom kev siv uas tuaj yeem ua rau siv UV LED emitters; Txawm li cas los xij, qhov kev vam meej ntawm txhua tus yog vam khom ntau ntawm lub wavelength thiab lub zog tso zis. Feem ntau, ultraviolet lub teeb tawm los ntawm LEDs tuaj yeem muab faib ua peb pawg. Cov rays no tau muab faib ua peb pawg: UV-A, UV-B, thiab UV-C.

Daim ntawv thov

Txij li thaum xyoo 1990s lig, cov neeg siv khoom tau nkag mus rau cov khoom siv uas tau muab cais ua "sab sauv" UVA. Cov LEDs no ib txwm tau siv rau hauv cov ntawv thov xws li kev txheeb xyuas lossis kev lees paub ntawm cov khoom cuav (Txiaj Ntsig, Daim Ntawv Tso Cai Tsav Tsheb, Cov Ntaub Ntawv, thiab lwm yam), nrog rau Kev Tshawb Fawb Txog Kev Ua Phem Txhaum Cai (Cime Scene Investigations), rau npe rau ob peb tug. Qhov tseeb wavelengths uas siv tau poob rau qhov chaw ntawm 390 nm mus rau 420 nm, thiab lub zog tso zis yuav tsum tau siv rau cov ntawv thov no tsis tshua muaj siab.

Thaum lub sij hawm ntawd, qis wavelengths tsis tuaj yeem siv hauv kev tsim khoom vim lawv tsis muaj. Cov hom LEDs no yog tus nqi qis tshaj ntawm tag nrho cov khoom UV thiab tau nyob rau hauv kev ua lag luam tau ntev txij li lawv yooj yim los tsim thiab muaj tus nqi qis, yog li lawv tau dav siv los ntawm ntau tus neeg muag khoom. Nyob rau hauv ob peb xyoos dhau los, lub "nruab nrab" UVA LED tivthaiv cheeb tsam tau pom qhov loj tshaj plaws ntawm kev nthuav dav. UV kho ntawm cov khoom lag luam thiab cov khoom lag luam xws li cov nplaum nplaum, txheej, thiab cov inks tso nyiaj rau feem ntau ntawm kev siv nyob rau hauv no wavelength ntau yam (txog 350 nm - 390 nm).

Qhov no suav nrog feem ntau ntawm cov ntawv thov hauv qhov no. Txoj kev kho ib txwm siv, xws li mercury lossis fluorescent, muab ntau qhov zoo uas LEDs tsis ua, suav nrog kev ua haujlwm siab dua, txo tus nqi tag nrho ntawm cov tswv cuab, thiab qhov system miniaturisation. LEDs muab cov txiaj ntsig zoo heev.

Raws li cov saw hlau txuas ntxiv tso siab rau cov tuam txhab tsim khoom siv thev naus laus zis LED, muaj kev txav mus los ntawm kev siv LEDs rau kev kho cov txheej txheem. Txawm hais tias cov nuj nqis cuam tshuam nrog qhov kev sib tw wavelength no ntau dua li cov uas cuam tshuam nrog thaj tsam UVA sab saud, cov nqi pheej yig tsis tu ncua vim kev nce qib sai hauv kev tsim khoom nrog rau kev loj hlob. Qhov "qis" UVA thiab "saum" UVB wavelengths (kwv yees li 300 nm txog 350 nm) yog qhov tshiab tshaj plaws ntxiv rau kev lag luam cov khoom muag.
Cov cuab yeej no muaj peev xwm siv tau rau ntau yam kev siv, qee qhov suav nrog UV kho, biomedical, DNA tsom xam, thiab ntau hom kev hnov. Muaj ntau qhov sib tshooj hauv tag nrho peb ntawm UV spectral ntau yam; Yog li ntawd, ib tug yuav tsum tau soj ntsuam tsis tsuas yog dab tsi yog qhov zoo tagnrho rau daim ntawv thov, tab sis kuj yog dab tsi yog qhov zoo tshaj plaws kev xaiv ntawm cov nqi, raws li lub luv luv wavelength, lub kim kim LED yuav ib txwm yuav.

Muaj qhov sib tshooj tseem ceeb hauv tag nrho peb ntawm UV spectral ranges. Qhov "qis" UVB thiab "saum" UVC ranges (kwv yees 250nm - 300nm) yog ob qho tib si uas tseem muaj ntau heev hauv lawv cov menyuam mos; tsis tau, muaj kev txaus siab thiab kev thov rau cov khoom no nyob rau hauv ob qho tib si huab cua thiab dej purification systems. Tam sim no, tsuas yog qee tus lag luam me uas muaj peev xwm tsim cov teeb ci ultraviolet-emitting diodes (UV LEDs) nyob rau hauv qhov kev sib tw wavelength no, thiab tsawg dua tus naj npawb yog tsim cov khoom lag luam uas muaj lub neej txaus, kev cia siab, thiab kev ua tau zoo.

Raws li qhov tshwm sim ntawm qhov no, tus nqi ntawm cov khoom siv ua haujlwm hauv UVC / B spectrum tseem nyob siab heev, thiab cov nuj nqis yuav ua rau lawv siv tsis tau hauv qee qhov xwm txheej.

Txij li thaum pib ua lag luam thawj zaug UVC LED-raws li tshuaj tua kab mob hauv xyoo 2012, kev ua lag luam tau pab kom nce mus rau qhov chaw uas muaj ntau lub lag luam tam sim no nrhiav cov khoom siv LED. Kev ceev faj Cov ntsiab lus ntawm seb UV LEDs puas muaj kev phom sij rau cov neeg siv yog ib qho uas nquag nug txog cov teeb no.

Raws li twb tau tham lawm, muaj ntau tshaj ib theem ntawm UV teeb. Lub "dub lub teeb" yog ib qho ntawm cov paub zoo tshaj plaws thiab siv dav siv los tsim cov hluav taws xob ultraviolet.

Cov khoom no tau siv rau ntau lub hom phiaj thoob plaws hauv chav kawm ntawm ntau xyoo caum, suav nrog kev txheeb xyuas cov duab kos duab thiab cov txiaj ntsig, ntxiv rau kev tsim cov ci ntsa iab lossis fluorescent cuam tshuam rau qee yam ntawm cov ntawv tshaj tawm. Lub teeb uas tau tsim los ntawm kev nkag siab txog cov ntawv thov thiab kev ceev faj rau kev siv ultraviolet LEDs

Cov qij no feem ntau yog nyob rau hauv "sab sauv" UVA spectrum uas nyob ze tshaj plaws nyob rau hauv wavelength mus rau qhov pom ntau yam nrog lub zog qis. Qhov no ntawm UVA spectrum yog qhov nyab xeeb tshaj plaws ntawm peb qhov ntau yam ntawm UV teeb, txawm hais tias muaj kev cuam tshuam loj heev tau cuam tshuam rau kev mob qog noj ntshav hauv tib neeg nrog rau lwm yam teeb meem xws li ua kom tawv nqaij laus.

LEDs (raws li qhov tsis zoo rau cov qauv incandescent lossis fluorescent hom qhov muag teev) kuj yog cov kev taw qhia zoo nrog cov duab nqaim heev. Saib ncaj qha rau hauv UV LED tuaj yeem ua teeb meem rau lub qhov muag. Nws yog qhov zoo tshaj plaws los txwv qhov raug UVA tsim cov khoom. UVC thiab ntau ntawm UVB spectrums ntawm lub teeb yog feem ntau yog siv rau kev tua kab mob thiab ua kom tsis muaj menyuam. Lub teeb uas tsim los ntawm cov wavelengths no tsis yog tsuas yog tsim kev puas tsuaj rau cov kab mob microorganisms, tab sis kuj muaj kev phom sij rau tib neeg thiab lwm yam kev ua neej uas tuaj yeem cuam tshuam nrog nws.

Cov teeb ci LED no yuav tsum muaj kev tiv thaiv ib txwm thiab tsis tuaj yeem pom ntawm qhov muag liab qab txawm tias nws yuav tshwm sim tias me me lossis tsis muaj lub teeb tawm ntawm lub cuab yeej. Kev cuam tshuam rau cov wavelengths no yuav ua rau mob qog noj ntshav ntawm daim tawv nqaij thiab ib ntus lossis tas li tsis pom kev lossis tsis pom kev.

Tsis tas li ntawd, ua ntej yuav yuav UVC lossis UVB LED, ntau lub tuam txhab xav kom txhua tus neeg siv khoom kos npe rau daim ntawv qhia tias lawv nkag siab thiab pom zoo rau kev ceev faj txog kev siv thiab tuav cov khoom no.

High Power Uv Led Lub teeb

Nta:

● High Wattage uv coj lub teeb zoo ib yam li qhov loj thiab zoo li cov pa roj hmab UV teeb tab sis muaj peev xwm ua haujlwm ntawm cov zis ntau dua UV.

● High Wattage uv coj lub teeb yog dav siv nyob rau hauv yuam cua duct systems thiab dej disinfection daim ntaub ntawv.

● High Wattage uv coj lub teeb feem ntau pom muaj nyob rau hauv kev tswj tsw tsw thiab kev siv tshuaj photochemical.

● Muaj nyob rau hauv Low Ozone thiab Ozone Producing versions.

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