1. Raw Khoom Npaj:
Xaiv cov khoom siv raw uas tsim nyog yog qhov tseem ceeb los xyuas kom meej qhov zoo ntawm cov khoom siv kho qhov muag. Hauv kev tsim kho qhov muag niaj hnub, cov iav kho qhov muag lossis cov yas kho qhov muag feem ntau yog xaiv los ua cov khoom tseem ceeb. Cov iav kho qhov muag muaj npe nrov rau nws txoj kev sib kis tau zoo tshaj plaws thiab kev ruaj ntseg, muab qhov tshwj xeeb kho qhov muag rau kev ua haujlwm siab thiab ua haujlwm siab xws li lub tshuab tsom iav, telescopes, thiab lub koob yees duab zoo tshaj plaws.
Tag nrho cov ntaub ntawv raw tau raug soj ntsuam nruj nruj ua ntej nkag mus rau cov txheej txheem tsim khoom. Qhov no suav nrog kev ntsuas qhov tseem ceeb xws li pob tshab, homogeneity, thiab refractive index kom ua raws li cov qauv tsim. Tej yam me me tsis xws luag tuaj yeem ua rau cov duab tsis zoo los yog qhov muag plooj, uas tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm cov khoom kawg. Yog li, kev tswj xyuas kom zoo yog qhov tseem ceeb los tswj cov txheej txheem siab thoob plaws txhua pawg ntawm cov khoom.
2. Txiav thiab Moulding:
Raws li kev tsim tshwj xeeb, cov cuab yeej txiav kev tshaj lij yog siv los ua cov khoom siv raw. Cov txheej txheem no xav tau kev ua haujlwm siab heev, vim tias qhov sib txawv me ntsis tuaj yeem cuam tshuam rau kev ua haujlwm tom ntej. Piv txwv li, nyob rau hauv kev tsim cov precision optical lo ntsiab muag, feeb yuam kev tuaj yeem ua rau tag nrho lub lens tsis ua haujlwm. Txhawm rau ua tiav qib ntawm qhov tseeb no, kev tsim kho qhov muag niaj hnub no feem ntau siv cov cuab yeej CNC siab heev uas muaj cov cuab yeej ua haujlwm siab thiab cov tshuab tswj muaj peev xwm ntawm micron-theem raug.
Tsis tas li ntawd, cov khoom siv lub cev ntawm cov khoom yuav tsum tau txiav txim siab thaum txiav. Rau cov iav kho qhov muag, nws cov hardness siab yuav tsum tau ceev faj tshwj xeeb los tiv thaiv kev tawg thiab khib nyiab; rau optical plastics, yuav tsum tau saib xyuas kom tsis txhob deformation vim overheating. Yog li, kev xaiv cov txheej txheem txiav thiab qhov ntsuas qhov ntsuas yuav tsum tau ua kom zoo raws li cov khoom siv tshwj xeeb kom ntseeg tau tias cov txiaj ntsig zoo.
3. Kev sib tsoo zoo thiab polishing:
Kev sib tsoo zoo yog ib kauj ruam tseem ceeb hauv kev tsim cov khoom siv kho qhov muag. Nws koom nrog kev siv cov khoom sib xyaw ntawm cov khoom abrasive thiab dej txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ua tiav ob lub hom phiaj tseem ceeb: (1) kom ze rau qhov sib npaug ntawm lub vojvoog tsim; (2) tshem tawm kev puas tsuaj subsurface. Los ntawm kev tswj hwm qhov loj me thiab qhov siab ntawm cov abrasive, kev puas tsuaj hauv av tuaj yeem txo qis, yog li txhim kho qhov kev ua tau zoo ntawm lub lens. Tsis tas li ntawd, nws yog ib qho tseem ceeb kom ntseeg tau tias qhov chaw tsim nyog thickness los muab cov npoo txaus rau polishing tom ntej.
Tom qab kev sib tsoo zoo, lub lens yog polished kom ua tiav lub vojvoog ntawm curvature, spherical irregularity, thiab nto tiav siv polishing disc. Thaum lub sij hawm polishing, lub lens vojvoog yog rov ntsuas thiab tswj tau siv cov qauv los xyuas kom meej kev ua raws li cov qauv tsim. Spherical irregularity yog hais txog qhov siab tshaj plaws tso cai cuam tshuam ntawm lub ntsej muag kheej kheej, uas tuaj yeem ntsuas los ntawm kev ntsuas kev sib cuag lossis kev cuam tshuam. Interferometer kuaj pom muaj qhov tseeb dua thiab lub hom phiaj piv rau cov qauv ntsuas, uas yog nyob ntawm tus neeg ntsuas kev paub dhau los thiab tuaj yeem qhia txog kev kwv yees yuam kev. Tsis tas li ntawd, qhov chaw ntawm lub lens defects xws li khawb, pitting, thiab notches yuav tsum ua tau raws li cov qauv qhia kom paub meej qhov zoo thiab kev ua tau zoo ntawm cov khoom kawg.
4. Centering (Tswj ntawm Eccentricity los yog sib npaug Thickness txawv):
Tom qab polishing ob sab ntawm lub lens, lub lens ntug yog finely av nyob rau hauv ib tug tshwj xeeb tshuab dhos ua kom tiav ob txoj hauj lwm: (1) sib tsoo lub lens rau nws txoj kab uas hla kawg; (2) xyuas kom meej tias cov axis kho qhov muag sib haum nrog cov neeg kho tshuab axis. Cov txheej txheem no yuav tsum muaj cov txheej txheem sib tsoo siab, ntsuas qhov tseeb, thiab hloov kho. Kev sib haum xeeb ntawm cov khoom siv kho qhov muag thiab cov axes ncaj qha cuam tshuam rau lub lens qhov kev ua haujlwm kho qhov muag, thiab txhua qhov sib txawv tuaj yeem ua rau cov duab distortion lossis txo kev daws teeb meem. Yog li ntawd, cov cuab yeej ntsuas siab, xws li laser interferometers thiab cov tshuab tsis siv neeg sib dhos, feem ntau yog ua haujlwm los xyuas kom meej kev sib raug zoo ntawm cov khoom siv kho qhov muag thiab cov axes.
Ib txhij, sib tsoo lub dav hlau los yog tshwj xeeb tsau chamfer ntawm lub lens kuj yog ib feem ntawm cov txheej txheem centering. Cov chamfers no txhim khu kev txhim kho qhov tseeb, txhim kho cov khoom siv dag zog, thiab tiv thaiv kev puas tsuaj thaum siv. Yog li, qhov chaw nruab nrab yog qhov tseem ceeb rau kev ua kom pom tseeb ntawm kev ua haujlwm kho qhov muag thiab kev ua haujlwm ruaj khov ntawm lub lens ntev.
5. Txheej Kev Kho Mob:
Lub lens polished undergoes txheej los ua kom lub teeb kis tau tus mob thiab txo qhov kev xav, yog li txhim kho cov duab zoo. Txheej yog ib kauj ruam tseem ceeb hauv kev tsim cov khoom siv kho qhov muag, hloov kho lub teeb nthuav tawm cov yam ntxwv los ntawm kev tso ib lossis ntau dua cov yeeb yaj kiab nyias ntawm lub lens nto. Cov ntaub ntawv txheej txheem muaj xws li magnesium oxide thiab magnesium fluoride, paub txog lawv cov khoom kho qhov muag zoo thiab tshuaj lom neeg ruaj khov.
Cov txheej txheem txheej yuav tsum muaj kev tswj xyuas meej ntawm cov khoom sib faib thiab cov yeeb yaj kiab tuab kom ntseeg tau tias kev ua tau zoo ntawm txhua txheej. Piv txwv li, nyob rau hauv multilayer coatings, lub thickness thiab cov khoom ua ke ntawm cov txheej txheem sib txawv tuaj yeem txhim kho kev xa tawm thiab txo qhov kev xav tsis zoo. Tsis tas li ntawd, cov coatings tuaj yeem muab cov haujlwm tshwj xeeb kho qhov muag, xws li UV tiv thaiv thiab tiv thaiv pos huab, nthuav dav lub lens daim ntawv thov ntau yam thiab kev ua haujlwm. Yog li ntawd, txheej txheej tsis yog tsuas yog qhov tseem ceeb rau kev txhim kho qhov muag pom kev ua tau zoo tab sis kuj tseem ceeb heev rau kev ua kom tau raws li cov kev xav tau sib txawv.
Post lub sij hawm: Dec-23-2024