Laser-vim qhov muag puas tuaj yeem tshwm sim nrogtej chav kawm laser, nyob ntawmwavelength, lub zog, lub sij hawm raug, thiab beam yam ntxwv. Raws li thoob ntiaj teblaser kev nyab xeebcov qauv (IEC 60825-1: CovthiabANSI Z136.1), lasers yog grouped rau hauvchav kawmraws li lawv lub peev xwm ua rau raug mob.
Hauv qab no yog ib qho kev sib cais ntawm cov chav kawm lasertuaj yeem ua rau qhov muag puas-thiab nyob rau hauv tej yam kev mob.
✅ Cov chav kawm laser uas tuaj yeem ua rau qhov muag puas
| Laser Class | Tso zis zog (Tswj) | Qhov muag Hazard? | Tej yam kev mob rau kev raug mob |
|---|---|---|---|
| Chav Kawm 1 | <0.39 µW (visible) | ❌ Tsis muaj | Muaj kev nyab xeeb nyob rau hauv txhua yam mob; feem ntau embedded nyob rau hauv tag nrho cov tshuab (piv txwv li, DVD players). |
| Chav Kawm 1M | Tsawg zog, tab sis loj txoj kab uas hla los yog divergent beam | ⚠️ Tsuas yog nrog kev pab kho qhov muag | Muaj kev nyab xeeb rau qhov muag liab qab, tab sisKev phom sij yog pom los ntawm kev nthuav dav optics(piv txwv li, binoculars, microscopes). |
| Chav kawm 2 | Tsawg dua lossis sib npaug rau 1 mW (pom tsuas yog: 400-700 nm) | ⚠️ Tsis zoo li, tab sis ua tau | Safe vimblink reflex (<0.25 s aversion). txhob txwm saibnyob rau hauv lub beam tej zaum yuav ua rau ib ntus tom qab los yog retinal stress-tab sis kev puas tsuaj mus tas li yog tsawg. |
| Chav Kawm 2M | Tsawg dua lossis sib npaug li 1 mW, tab sis loj / sib txawv beam | ⚠️ Nrog kev pab kho qhov muag lossis kev pom ntev | Zoo li Chav 2, tab sistxaus ntshai thaum saib nrog lo ntsiab muag lossis telescopes. |
| Chav Kawm 3R | 1-5 mW (pom los yog tsis pom) | ✅ Yog – tsawg rau nruab nrab kev pheej hmoo | Kev raug mob tam sim no feem ntau muaj kev nyab xeeb, tab sisdirect viewing-especially >0.25 s- tuaj yeem ua rau qhov muag raug mob, tshwj xeeb tshaj yog nrog ntsuab (532 nm) lossis pom tsis pom wavelengths. |
| Chav Kawm 3B | 5-500mW (CW) | ✅✅ Yog – txaus ntshai heev | Kev nthuav tawm ncaj qha(txawm luv) rau lub beam los yogspecular reflectionstuaj yeem ua rautam sim ntawd, mus tas li retinal burns los yog tsis pom kev. Diffuse reflections feem ntau muaj kev nyab xeeb. |
| Chav Kawm 4 | >500 mW (CW) lossis siab -zog zog | ✅✅✅ Yog - muaj kev pheej hmoo loj thiab tam sim ntawd | Direct, specular, THIAB tej zaum diffuse reflectionstuaj yeem ua mob qhov muagtam sim ntawd. Kuj ua rau tawv nqaij thiab hluav taws kub. |
🔥 Ntsiab kev pom:
Class 3B thiab Class 4 lasers yog lub hauv paus ua rau cov ntaub ntawv laser qhov muag raug mob.
TxawmChav Kawm 3Rtuaj yeem ua rau muaj kev phom sij nyob rau hauv qhov phem tshaj - cov xwm txheej saib.
🧠 Yuav Ua Li Cas Laser Lub Teeb Ua Rau Qhov Muag
Hom kev raug mob nyob ntawmwavelength:
Pom tau (400–700 nm) & Ze -Infrared (700–1400 nm):
Focused los ntawm lub lens mus rau lubretina → photothermal hlawv, qhov muag tsis pom kev, lossis qhov tsis pom kev mus tas li.
Yam txaus ntshai tshaj plaws- suav nrog cov lasers xws li 532 nm (ntsuab) thiab 1064 nm (Nd:YAG).
Ultraviolet (UV,<400 nm):
Absorbed los ntawmpob kwsthiablens→ photokeratitis ("welder's flash") lossis cataracts.
Far-Infrared (>1400 nm):
Absorbed ntawm lubpob txha nto→ mob pob txha kub hnyiab.
💡 Nco tseg: Infrared lasers (piv txwv li, 1064 nm) yog qhov txaus ntshai tshwj xeeb vim lawv nyob nraumpom tsis tau- tsis muaj kev cuam tshuam blink, yog li kev puas tsuaj tshwm sim yam tsis muaj kev ceeb toom.
⚠️ Tiag -Lub Ntiaj Teb Risk Scenarios
Class 2/3R laser pointers: txhob txwm saib (xws li, los ntawm cov menyuam yaus lossis thaum lub sijhawm nthuav tawm) tau tshwm simretinal qhov txhab.
Class 3B alignment lasers: Kev raug mob tshwm sim thaum lub sij hawm sim teeb tsa →mus tas li scotomas.
Class 4 industrial / kho mob lasers: Reflections tawm cov cuab yeej, hniav nyiaj hniav kub, los yog nto →qhov muag tsis pom kev.
🛡️ Kev Tiv Thaiv: Thaum Yuav Tsum Tiv Thaiv Qhov Muag?
| Laser Class | Xav tau kev tiv thaiv qhov muag? |
|---|---|
| Chav Kawm 1, 1M | Tsis muaj |
| Chav Kawm 2, 2M | Feem ntau tsis yog (tab sis tsis txhob ntsia) |
| Chav Kawm 3R | Pom zoorau kev siv txuas ntxiv lossis kev sib tw |
| Chav Kawm 3B | Yuav tsum tauthaum qhib - nqaj ua haujlwm |
| Chav Kawm 4 | Yuav tsum tau+ engineering tswj (enclosures, interlocks) |
Ib txwm sivwavelength - tshwj xeeb,OD- ntsuas qhov muag pom kev nyab xeeb laserrau chav kawm 3B thiab 4.
✅ Cov ntsiab lus: Lub lasers ua rau qhov muag puas?
Kev pheej hmoo tsawg: Chav Kawm 1, 1M, 2, 2M (nyob rau hauv ib txwm siv)
Muaj kev pheej hmoo: Chav Kawm 3R- kev raug mob tshwm sim nrog kev raug ncaj qha/saib saib
Kev pheej hmoo siab: Chav Kawm 3B - meej qhov muag phom sijlos ntawm cov kab ncaj nraim / tshwj xeeb
Txaus ntshai heev: Chav Kawm 4 - instant qhov muag (thiab daim tawv nqaij) puas, txawm los ntawm lub teeb tawg
🔒 Txoj Cai Golden:
If you can see the beam (or it's invisible but >5 mW), kho nws raws li qhov muag phom sij.
Tsis txhob saib ncaj qha rau hauv ib qho laser aperture-thiab ib txwm txheeb xyuas cov ntawv teev npe ua ntej siv.
Thaum tsis ntseeg, nrog koj thamLaser Safety Officer (LSO)los yog ua raws li cov cai tswj kev nyab xeeb hluav taws xob hauv zos. Koj lub zeem muag tsis tsim nyog rau kev pheej hmoo.