Dab tsi yog IEC60825 Kev faib tawm ntawm 632.8nm 2mW Nws-Ne Laser?

Lub He-Ne laser, ua haujlwm ntawm lub cim 632.8nm liab wavelength, yog ib qho cuab yeej uas muaj nyob rau hauv kev kawm ua qauv qhia, kev tshawb fawb lub chaw soj nstuam, thiab tej daim ntawv thov kev sib raug zoo. Ib tug qauv emitting 2.3 milliwatts (mW) sawv cev rau ib theem fais fab rau cov khoom siv. Kev txiav txim siab nws qhov tseeb IEC kev nyab xeeb kev faib tawm yog qhov tseem ceeb rau kev siv cov kev tiv thaiv tsim nyog, ua kom cov neeg siv kev nyab xeeb, thiab ua tiav cov cai raws li txoj cai thoob plaws ntiaj teb kev lag luam.
 

1. Core Framework ntawm IEC 60825 Standard

IEC 60825-1 tsim kom muaj kev nyab xeeb kev faib tawm raws li cov hluav taws xob laser lub peev xwm ua rau muaj kev puas tsuaj lom, feem ntau ntawm qhov muag thiab tawv nqaij. Kev faib tawm yog tsim los txiav txim siab los ntawm kev sib piv cov laserNkag tau Emission Limit (AEL)rau ib chav kawm tshwj xeeb tiv thaiv nws qhov ntsuasSiv tau Emission Level. AEL yog lub zog siab tshaj plaws (rau txuas ntxiv-wave lasers) lossis lub zog (rau cov lasers pulsed) tso cai rau ib chav kawm raws li kev ntsuas ntsuas.

Kev faib tawm Hierarchy (los ntawm tsawg kawg mus rau feem ntau txaus ntshai):

Chav Kawm 1:Muaj kev nyab xeeb nyob rau hauv txhua qhov tsim nyog tau pom zoo ntawm kev ua haujlwm. Cov pa hluav taws xob qis dua AEL rau Chav Kawm 1 rau txhua lub sijhawm raug.

Chav Kawm 1M & 2M:Muaj kev nyab xeeb rau lub qhov muag tsis pom kev vim muaj lub zog qis lossis cov nqaj loj sib txawv, tab sis muaj peev xwm ua rau muaj kev phom sij thaum saib nrog cov cuab yeej kho qhov muag (xws li, binoculars, microscopes) lossis rau Chav Kawm 2M, thaum lub beam yog condensed ntawm lub qhov muag.

Chav Kawm 2:Tsuas yog siv raupom lasers (400-700 nm). Muaj kev nyab xeeb rau lub sijhawm, kev raug mob tshwm sim (txog 0.25 vib nas this, lub sijhawm teb rau tib neeg aversion). AEL rau CW Class 2 lasers yog 1 mW.

Chav Kawm 3R: "Txo Risk"chav kawm rau lasers (pom thiab qee qhov pom tsis pom) nrog cov emissions siv tau 1 txog 5 npaug ntawm AEL ntawm Chav Kawm 2 (kom pom) lossis Chav Kawm 1 (kom pom tsis pom). Thaum ua rau muaj kev pheej hmoo siab ntawm kev raug mob ntau dua li Chav Kawm 2, qhov kev pheej hmoo raug txwv, thiab tsawg dua kev tsim khoom yuav tsum tau siv dua li Chav Kawm 3B.

Chav Kawm 3B:Muaj kev phom sij rau kev pom ncaj qha rau hauv intrabeam thiab specular reflections. Diffuse reflections feem ntau muaj kev nyab xeeb. Yuav tsum muaj kev tswj xyuas engineering nruj me ntsis (tseem ceeb hloov, kev ruaj ntseg interlocks, emission indicators).

Chav Kawm 4:Siab - lasers muaj peev xwm ua rau cov tawv nqaij raug mob tam sim ntawd thiab qhov muag puas los ntawm cov kab ncaj nraim, diffuse, los yog cov kab teeb pom kev zoo. Lawv nthuav tawm hluav taws kub thiab xav tau kev tswj hwm nruj tshaj plaws.

Key Parameters rau Classification:Wavelength, tso zis fais fab / lub zog, emission duration, mem tes yam ntxwv, beam divergence, thiab qhov luaj li cas yog tag nrho cov tseem ceeb yam tseem ceeb nyob rau hauv kev txiav txim rau cov chav kawm raug.

2. Kev tshuaj ntsuam xyuas ntawm Helium-Neon Laser hauv Lus Nug

Lub laser nyob rau hauv kev ntsuam xyuas muaj txhais cov yam ntxwv tseem ceeb rau nws cov kev faib:

Lub wavelength: 632.8nmQhov no tso nws squarely nyob rau hauv lubpom spectrum(liab). Tib neeg lub qhov muag yog pob tshab rau qhov wavelength no, thiab lub teeb pom tau tias yog xim liab, ua rau lub ntuj aversion teb (blink reflex, ~ 0.25 s).

Cov zis hluav taws xob: 2.3mW (Nruam Wave):Qhov no yog ntsuas, khov kho- lub xeev lub zog. CW xwm ua kom yooj yim rau kev faib tawm, vim nws tsis koom nrog kev suav cov pulse zog.

3. Kev Txiav Txim Siab rau 632.8nm 2.3mW Laser

Cov txheej txheem suav nrog kev sib piv ncaj qha rau AELs uas tau teev tseg hauv IEC 60825-1 rau pom, tsis tu ncua-yoj lasers.

Sib piv nrog Chav Kawm 2 AEL:Rau pom CW lasers, Chav Kawm 2 AEL yog1 mW ib. Lub laser tso zis ntawm2,3m wbkom meej meej tshaj qhov txwv no. Yog li ntawd, nwstsis tuaj yeem raug cais raws li Chav Kawm 2.

Sib piv nrog Class 3R AEL:Rau pom CW lasers, Chav Kawm 3R AEL txhais tau tias5 npaug ntawm Chav Kawm 2 AEL. Qhov no suav rau5mw ua. Lub laser tso zis ntawm 2.3 mW yogntau dua 1 mW tab sis tsawg dua 5 mW.

Kev txiav txim siab ntawm Lwm yam Factors:

Wavelength kho:Tsis muaj wavelength- nyob ntawm qhov kev kho qhov cuam tshuam siv sib txawv rau Chav Kawm 2 thiab 3R nyob rau hauv qhov pom band rau qhov kev suav fais fab no.

Kev ntsuas ntsuas:Tus nqi 2.3 mW yog suav tias yognkag tau emission theemraws li tau hais los ntawm tus qauv (qhov phem tshaj - rooj plaub, post-collimating optics tso zis).

Aversion Teb:Rau Chav Kawm 3R, qhov kev tiv thaiv tau them los ntawm cov lus teb aversion tseem suav hais tias, txawm tias muaj cov paj tsawg dua rau Chav Kawm 2.

Kev xaus ntawm Classification:Raws li IEC 60825-1 lub moj khaum, anruam-wave, 632.8nm helium-neon laser nrog lub zog siv tau ntawm 2.3 mW yog cais raws li Class 3R laser khoom.

4. Kev Nyab Xeeb Kev Nyab Xeeb thiab Kev Tswj Xyuas Kev Ntsuas rau Chav Kawm 3R Lasers

Thaum Class 3R sawv cev rau qeb "txo kev pheej hmoo" piv rau 3B thiab 4, nws yogtsis yog"kev nyab xeeb" zoo li Chav Kawm 2. Cov kev cai tshwj xeeb thiab kev ceev faj txog kev nyab xeeb siv tau:

Chaw tsim tshuaj paus Requirements (IEC 60825):

Kev sau npe:Yuav tsum dais aceeb toomnrog rau lo lus "LASER RADIATION" lossis "LASER LIGHT," chav kawm 3R tsim, thiab daim duab peb sabceeb toom cim(dub sunburst ntawm daj tom qab).

Cov ntaub ntawv siv:Phau ntawv yuav tsum muaj cov lus qhia meej txog kev nyab xeeb, nrog rau cov lus ceeb toom tiv thaiv qhov muag ncaj qha.

Cov kev coj nyab xeeb rau cov neeg siv (pom zoo heev):

Tsis txhob txhob txwm ntsia rau hauv kab teeb lossis saib nws nrog cov cuab yeej kho qhov muag.

Terminate txoj kab teeb.Ib txwm siv lub nqaj nres lossis muaj kev tiv thaiv zoo, tsis yog - lub hom phiaj cuam tshuam los nqus cov nqaj thaum kawg ntawm nws txoj kev muaj txiaj ntsig.

Tswj ib puag ncig.Khaws txoj kab nqaj saum toj lossis qis dua qhov muag hauv thaj chaw nyob. Tshem tawm lossis npog qhov chaw muaj kev cuam tshuam (xws li cov hniav nyiaj hniav kub, watches, lossis cov cuab yeej glossy) los ntawm txoj kab nqaj.

Muab Tus Neeg Saib Xyuas Kev Nyab Xeeb Laser (LSO).Rau cov chaw ua haujlwm (labs, universities), LSO yuav tsum saib xyuas kev siv Class 3R thiab lasers siab dua, ua kom cov txheej txheem muaj kev nyab xeeb.

Muab kev cob qhia neeg siv.Txhua tus neeg ua haujlwm ntawm Chav Kawm 3R laser yuav tsum tau txais kev cob qhia kev nyab xeeb laser yooj yim npog cov kev phom sij tshwj xeeb thiab kev tswj hwm rau cov cuab yeej ntawd.

5. Kev txiav txim siab zoo rau kev siv ntau

Hom HeNe laser no muaj nyob rau hauv cov chaw tshwj xeeb:

Kev Kawm & Kev Tshawb Fawb:Siv nyob rau hauv physics labs rau optics demonstrations (kev cuam tshuam, diffraction), kev sib raug zoo ntawm optical benches, thiab raws li ib tug lub teeb qhov chaw nyob rau hauv holography los yog spectroscopy setups. Hauv cov chaw no, kev saib xyuas nruj thiab cov txheej txheem kev nyab xeeb meej yog qhov tseem ceeb.

Tsawg-Power Alignment & Pointing:Keeb kwm siv nyob rau hauv kev tsim kho lossis kev tsim khoom rau qis - zog sib dhos. Daim ntawv thov no tam sim no feem ntau hloov los ntawm Chav Kawm 2 liab diode lasers.

Cov Khoom Siv Tiv Thaiv Tus Kheej (PPE):Rau niaj hnub siv ntawm 2.3mW HeNe laser, tshwj xeeb laser tsom iav tsom iav yog feem ntautsis xav tauyog cov thawj coj thiab cov txheej txheem tswj tau nruj me ntsis raws li. Txawm li cas los xij, yog tias muaj kev pheej hmoo ua ntej ntawm kev saib lub sijhawm ntev (piv txwv li, thaum lub sijhawm ua haujlwm sib raug zoo), cov tsom iav uas tsim nyog Optical Density (OD) rau 632.8nm tej zaum yuav ua tau zoo.

6. Cov lus xaus thiab cov lus pom zoo kawg

Cov ntsiab lus tseeb:Ib qho txuas ntxiv -wave helium-neon laser emitting ntawm 632.8 nm nrog lub zog ntawm 2.3 mW yog cais raws li ib tugClass 3R laserRaws li IEC 60825-1.

Txawm hais tias nws qhov kev pheej hmoo qis dua qhov siab dua - chav kawm fais fab, nws nthuav tawm qhov teeb meem qhov muag tiag tiag yog saib ncaj qha. Nws qhov kev faib tawm yuav tsum muaj qib siab ntawm kev paub txog kev nyab xeeb dua li qhov siv hom 2 laser pointer. Cov neeg siv yuav tsum:

Saib xyuas cov ntawv ceeb toomthiab kho cov cuab yeej ua ib qho kev phom sij.

Ua thiab ua raws li cov txheej txheem ua haujlwm nyab xeeb, feem ntau tsom rau kev zam kom tsis txhob muaj qhov pom qhov muag intrabeam.

Xyuas kom lub beam raug kaw kom raugnyob rau hauv ib puag ncig tswj.

Kev ua raws li cov hauv paus ntsiab lus no tso cai rau kev siv tau zoo thiab nyab xeeb ntawm cov cuab yeej kho qhov muag classic thiab muaj txiaj ntsig zoo.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.