Cov yam ntxwv
Lub f-theta tsom iav tsom iav, qhov tseeb, yog ib hom iav daim iav, yog tsim los ua kom cov duab siab thiab scanning lub kaum sab xis kom txaus siab rau kev sib raug zoo y = f * θ lens pawg (θ yog lub kaum sab xis ntawm deflection ntawm galvanometer) , yog li daim iav f-theta tseem hu ua linear lens.Nws muaj ntau yam nta:
(1) Rau lub teeb monochromatic, lub dav hlau imaging rau lub dav hlau, tag nrho cov duab dav hlau duab zoo ib yam, lub aberration yog me me.
(2) Qee qhov deflection ceev ntawm qhov teeb meem teeb pom kev sib raug rau qhov nrawm nrawm nrawm, yog li qhov ntsuas kab sib luag tuaj yeem pom tau nrog qhov teeb meem ntawm qhov sib npaug ntawm qhov nrawm nrawm.
Kev paub txog F-Theta Focusing Field Mirror Selection
Cov kev tsis tseem ceeb ntawm daim iav tsom iav suav nrog kev ua haujlwm wavelength, scanning ntau yam (lossis focal length), thiab tsom qhov chaw txoj kab uas hla.
1) Ua haujlwm Wavelength:Lub wavelength ua hauj lwm ntawm lub teb lo ntsiab muag yog txiav txim los ntawm lub laser ntawm lub marking tshuab.Lub wavelength ntawm fiber ntau laser yog 1064 nm, lub wavelength ntawm CO2 laser yog 10.6 um, lub wavelength ntawm lub ntsuab laser yog 532 nm, lub wavelength ntawm lub UV laser yog 355 nm, thiab cov coj teb lo ntsiab muag yog xaiv rau cov coj. laser.
2) Scanning cheeb tsam:Kev tsom xam daim iav tsom iav thaj tsam yog txiav txim siab los ntawm qhov ntev ntawm lub tsom iav tsom iav, qhov focal ntev ntawm daim iav daim iav feem ntau tsuas yog cim rau ntawm focal ntev, focal ntev thiab cheeb tsam scanning muaj ib qho qauv qhia: thaj tsam f = 0.7 × focal ntev. .
Piv txwv li, f = 160 mm daim iav sib raug rau 112 mm square, kev kho dav dav ntawm qhov dav ntawm tus lej yog 110 mm × 110 mm, f = 100 mm daim iav sib haum rau qhov dav ntawm 70 mm × 70 mm.
3)Cov tub ntxhais kawm xwm txheej:Cov tub ntxhais kawm qhov xwm txheej ntawm daim iav daim iav yuav tsum yog kwv yees li qhov sib npaug ntawm txoj kab uas hla ntawm lub laser beam los ntawm galvanometer.Tab sis ua li cas peb thiaj paub qhov loj ntawm txoj kab uas hla ntawm lub laser beam los ntawm galvanometer?Siv qhov tsawg tshaj plaws ntawm ob tus lej: ib qho = qhov chaw tawm ntawm lub laser * tus multiplier ntawm lub nqaj expander;lwm qhov yog sib npaug rau qhov chaw naj npawb ntawm galvanometer.
Yuav ua li cas yog hais tias lub cheeb ntawm lub laser beam los ntawm lub galvanometer yog loj tshaj qhov teeb meem me nyuam kawm ntawv ntawm daim iav teb?Thaum ua si daim teb lo ntsiab muag ntawm qhov loj tshaj plaws ntawm cov qauv, qhov chaw nruab nrab yog tsis muaj teeb meem, lub ntug ntawm ib feem yuav hnov ntxhiab ntau lub teeb tsis muaj zog, cim qhov tob kuj yuav ntiav ntau.Qhov no parameter yog ib tug ntau ntawm cov neeg muag khoom tsis xyuam xim rau, tab sis kuj feem ntau ua yuam kev, yuav tsum tau ceev faj.
4) Focusing qhov chaw diam "d":los ntawm qhov yooj yim tsom xam qhov chaw formula “d” = 2fλ / D paub, qhov ntev ntawm qhov focal ntev “f”, qhov loj dua qhov chaw tsom kab txoj kab uas hla “d”;wavelength "λ" ntev dua, qhov loj dua qhov chaw tsom kab txoj kab uas hla "d";qhov loj ntawm txoj kab uas hla ntawm qhov xwm txheej qhov chaw D, qhov me me ntawm qhov chaw tsom kab kab "d".
Tab sis peb yuav ua li cas thiaj paub tias daim iav tsom iav yog tsom ntau npaum li cas?Muaj ib qho parameter nyob rau hauv qhov dav dav teb lens tsis: qhov txwv ntawm qhov chaw diffraction lossis hu ua qhov chaw diffuse lossis hu ua qhov tsawg kawg nkaus qhov chaw, tus nqi no yog qhov sib npaug ntawm qhov tsawg kawg nkaus ntawm lub lens lens tuaj yeem tsom, tab sis tus nqi no yog tus nqi theoretical, tus nqi tiag tiag yog feem ntau loj dua tus nqi no.
5) Ua haujlwm nrug:Ntau tus neeg muas zaub yuav lo ntsiab muag thiab pom qhov ntev ntawm qhov focal, tab sis qhov ntsuas ntawm kev ua hauj lwm nyob deb tsis tshua pom.Tab sis thaum yuav lub lens ntev focal ntev, qhov ntsuas no yuav tsum tau them nyiaj tshwj xeeb rau, txwv tsis pub nws yooj yim ua yuam kev.Vim hais tias ntau tus neeg muas zaub ntawm lub txee uas nqa kem hloov qhov siab yog txwv.Tsis tas li ntawd, thaum xav txog qhov siab ntawm kem, peb kuj yuav tsum xav txog qhov siab ntawm cov khoom nws tus kheej, qhov siab ntawm cov khoom nws tus kheej yog 200 hli siab, ces qhov siab ntawm cov kab sib txuas yuav tsum tau ntxiv rau qhov siab ntawm cov khoom.
6) Muaj qee qhov nkhaus nto los yog siab thiab tsis tshua muaj undulation ntawm cov khoom, kom ua kom lub cim dav, tau paub qhov tob ntawm kev tsom mus rau qhov yuav tsum tau ua.Raws li peb paub, mus ntaus cov khoom uas muaj qee yam nkhaus lossis qis dua thiab qis ntawm kev tsom xam, thiab yog tias nws muaj qhov ntev focal ntev yuav tsum tau ntev.Yog li lub sijhawm no los xav txog daim iav daim iav tsis tuaj yeem tsuas saib qhov dav, tab sis kuj coj qhov tob ntawm kev tsom mus rau hauv tus account, yog li koj yuav tsum tau nce qhov dav, yog li qhov focal ntev nce, qhov sib thooj qhov tob ntawm kev tsom xam kuj yuav nce.
7) Xov rau daim iav teb.Qee lub tuam txhab muaj cov kab iav sib txawv.Yog li thaum koj yuav daim iav daim teb, koj yuav tsum paub txog cov xov, yog tias koj tsis tuaj yeem pom cov xov sib txuas ntawm daim iav teb, koj tuaj yeem nrhiav daim iav teb los ua laser npav tshuab txee los ua ib lub nplhaib hloov dua siab tshiab.
8) Qee qhov seem ntawm qhov tseem ceeb kuj tseem ceeb rau kev nco: M1 thiab M2 qhov tseem ceeb (qhov deb ntawm lub galvanometer lens los ntawm lub teb lo ntsiab muag), lub kaum sab xis scanning θ, qhov loj ntawm lub lens, retroreflective point (qhov no yog qhov tseem ceeb rau lub tshuab hluav taws xob siab) , tab sis cov kev txwv no muaj kev txhawj xeeb me ntsis, thiab cov neeg siv khoom tshwj xeeb tuaj yeem thov cov no.
Post lub sij hawm: Nov-09-2023