Cov tsom iav luam theej kabtsim ib feem tseem ceeb ntawm cov tshuab pom kev. Lawv xaiv yog ib qho kev ua haujlwm ntau yam, thiab yog ib theem tseem ceeb uas yuav tsum tau muaj kev ntsuam xyuas tag nrho ntawm kev sib raug zoo ntawm ntau yam, suav nrog tag nrho cov kab scan imaging system, qhov xwm txheej ntawm daim ntawv thov tshwj xeeb, thiab cov xwm txheej ib puag ncig.
Zuag qhia tag nrho, cov hauv qab no yog cov kev xav tseem ceeb rau kev xaiv lub lens scan kab:
1.Cov qauv kho qhov muag tseem ceeb
(1)Kev daws teeb meem: Kev daws teeb meem ntawm lub lens txhais tau hais tias lub lens muaj peev xwm daws tau cov ntsiab lus zoo; nws yuav tsum tau phim rau lub koob yees duab qhov loj me ntawm pixel thiab feem ntau yuav tsum tshaj qhov ceev ntawm lub koob yees duab pixel kom ntseeg tau tias qhov tsawg kawg nkaus ntawm kev kuaj pom yog qhov pom tseeb. Yuav kom ua tiav cov duab zoo dua, feem ntau nws yog qhov tsim nyog los xaiv lub lens nrog kev daws teeb meem siab dua; yog tias xaiv lub lens qis dua, cov txiaj ntsig uas lub koob yees duab muaj pixel ntau yuav tsis tuaj yeem ua tiav tag nrho.
(2)Qhov Ntev Focal: Qhov ntev ntawm lub lens ua haujlwm ua qhov txuas txuas qhov deb ua haujlwm, thaj chaw pom, thiab qhov loj ntawm lub sensor; nws yog qhov tseem ceeb tshaj plaws uas txiav txim siab qhov loj ntawm daim duab thiab cuam tshuam rau ob qho tib si qhov chaw thiab qhov ntev ntawm txoj kev pom ntawm lub cev. Qhov ntev ntawm lub lens ntev dua ua rau muaj qhov loj dua thiab thaj chaw pom me dua, ua rau nws tsim nyog rau kev tshuaj xyuas cov khoom me me lossis rau cov ntawv thov uas xav tau qhov loj dua; ntawm qhov tod tes, qhov ntev ntawm lub lens luv dua ua rau muaj qhov loj dua thiab thaj chaw pom loj dua, ua rau nws tsim nyog rau kev tshuaj xyuas cov khoom dav dav.
(3)Qhov qhib thiabdepth ntawmfthaj teb: Qhov loj ntawm lub qhov (aperture) cuam tshuam rau qhov ntau ntawm lub teeb nkag mus rau hauv daim duab thiab qhov tob ntawm daim teb. Lub qhov dav dav yog qhov tsim nyog rau cov chaw uas muaj teeb pom kev tsawg, txawm hais tias nws yuav ua rau muaj qhov tob ntawm daim teb; ntawm qhov tod tes, lub qhov nqaim ua rau qhov tob ntawm daim teb ntau dua tab sis xav tau lub teeb ci ntau dua. Feem ntau, cov khoom uas muaj qhov chaw tsis sib xws xav tau qhov tob ntawm daim teb ntau dua, ua rau muaj kev sib npaug zoo ntawm qhov loj ntawm lub qhov thiab lub sijhawm raug teeb pom kev; txawm li cas los xij, thaum thaij duab cov khoom txav mus los ceev lossis hauv cov ntawv thov uas xav tau lub sijhawm raug teeb pom kev luv luv, yuav tsum xaiv lub lens dav dav kom txhim kho qhov ci ntawm daim duab.
Qhov aperture yog qhov tseem ceeb ntawm cov lens scan kab
(4)Thaj chaw pom thiab qhov deb ua haujlwm: Lub tshav pob ntawm qhov pom yog txiav txim siab los ntawm qhov ntev ntawm lub lenslub lensthiab qhov ntev ntawm lub koob yees duab lub sensor. Yuav tsum txiav txim siab qhov chaw pom kev zoo raws li qhov loj ntawm qhov chaw tua. Piv txwv li, thaum tua cov khoom loj, yuav tsum xaiv lub lens uas muaj qhov chaw pom kev loj dua. Qhov deb ua haujlwm yog txiav txim siab los ntawm kev tsim qauv tshuab; nws yog ib qho tseem ceeb kom txhais qhov ntau thiab tsawg ntawm qhov deb ua haujlwm thiab, tom qab ntawd, xaiv lub lens uas poob rau hauv qhov ntau thiab tsawg no raws li qhov deb tiag tiag ntawm lub lens thiab cov khoom hauv kev siv tiag tiag.
2.Cov yam ntxwv ntawm kev kho tshuab thiab kev teeb tsa
Ua ntej tshaj plaws, lub lens scan kab uas xaiv yuav tsum sib xws nrog lub koob yees duab lub sensor loj; qhov no ua kom lub lens siv tau tag nrho thaj chaw thaij duab ntawm lub sensor thiab tiv thaiv cov teeb meem xws li kev cuam tshuam duab ntawm ntug. Tsis tas li ntawd, nws yog ib qho tseem ceeb kom paub tseeb tias lub lens scan kab uas xaiv phim hom interface ntawm lub koob yees duab lossis lub kaw lus tshuaj xyuas.
Cov hom mount feem ntau muaj xws li C, CS, F, thiab M42; qhov sib txawv ntawm qhov interface yuav ua rau kev sib dhos lossis kev tsom mus rau qhov tsis yooj yim sua. Tsis tas li ntawd, nyob rau hauv cov chaw teeb tsa uas muaj qhov chaw tsawg, ib tus yuav tsum xav txog qhov cuam tshuam ntawm qhov loj me thiab qhov hnyav ntawm lub lens rau cov txheej txheem teeb tsa.
3.Cov ntsuas kev ua tau zoo
(1)Kev ua tau zoo ntawm MTF: MTF (modulation transfer function) ntsuas lub peev xwm ntawm lub lens los daws teeb meem ntawm ntau qhov zaus sib txawv, suav nrog ntau cov ntaub ntawv xws li kev sib piv, kev daws teeb meem, zaus sib txawv, thiab chromatic aberration. Qhov ntsuas no tseem ceeb heev rau kev sim hauv kev lag luam uas xav tau kev ntsuas meej. MTF siab ua kom muaj kev ncaj ncees ntawm cov ntsiab lus thaum lub sijhawm luam theej kab; yog li ntawd, kev xaiv lub lens nrog MTF kev ua tau zoo dua ua rau muaj txiaj ntsig zoo dua.
Piv txwv cov txiaj ntsig ntawm kev xeem Lens MTF
(2)Kev cuam tshuam thiab chromatic aberration: Kev cuam tshuam thiab chromatic aberration yog cov teeb meem tshwm sim hauv cov tshuab kho qhov muag. Thaum xaiv ib qholub lens, koj yuav tsum tau them sai sai rau qib kev tswj hwm kev cuam tshuam thiab chromatic aberration. Cov kab ke scan yog qhov rhiab heev rau geometric distortion, uas tuaj yeem ua rau muaj qhov yuam kev ntsuas, thiab chromatic aberration tuaj yeem cuam tshuam rau kev sib xws ntawm cov duab hla ntau qhov wavelengths. Tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej tshuaj xyuas uas xav tau qhov tseeb siab heev, nws yog qhov tseem ceeb kom xaiv cov iav uas muaj qhov cuam tshuam tsawg thiab kev kho chromatic aberration zoo; cov iav kab-scan siab kawg feem ntau tswj tus nqi cuam tshuam tsawg dua 0.05%.
(3) Kev sib npaug ntawm daim duab: Yuav tsum muaj cov iav ntsuas kab kom tswj tau qhov kev daws teeb meem ruaj khov thoob plaws hauv daim duab, kom ntseeg tau tias muaj qhov ntse sib xws hauv ntau qhov chaw ntawm daim duab, nrog rau qhov ntse sib xws ntawm ntau dua 98% ntawm qhov chaw nruab nrab thiab ntug.
4.Cov duab zoo thiab cov kev cai tshwj xeeb
(1)Kev sib phim spectralThaum qhov chaw kuaj pom yog lub teeb pom kev, infrared lossis ultraviolet, yuav tsum xaiv lub lens nrog cov spectral range sib xws kom tsis txhob muaj kev cuam tshuam spectral thiab kev txo qis ntawm cov duab. Piv txwv li, yog tias siv lub koob yees duab UV lossis IR, yuav tsum xaiv lub lens UV lossis IR uas tsim tshwj xeeb los kho qhov chromatic aberration rau qhov band ntawd.
(2)Tus nqi kab: Tus nqi ntawm kab yog txiav txim siab los ntawm qhov ceev ntawm kab ntau lawm, qhov dav ntawm qhov pom, thiab qhov loj ntawm pixel. Lub lens yuav tsum tswj tau qhov kev ua tau zoo ntawm qhov muag (MTF, lub teeb ci ntsa iab) ntawm tus nqi ntawm kab uas xav tau.
Kev zoo ntawm cov duab thiab cov kev cai tshwj xeeb ntawm cov iav ntsuas kab
5.Ib puag ncig siv thiab cov kev cai ntawm daim ntawv thov
Thaum xaiv lub lens, nws tseem ceeb heev uas yuav tsum xaiv lub lens uas muaj kev ruaj khov thiab hloov tau yooj yim—raws li qhov xwm txheej siv thiab cov kev cai ntawm daim ntawv thov—kom ntseeg tau tias kev ua haujlwm zoo thiab ua tiav cov txiaj ntsig xav tau thoob plaws ntau qhov chaw. Piv txwv li, nyob rau hauv cov chaw ua haujlwm hnyav (kev co, qhov kub sib txawv loj), cov lens qib kev lag luam nrog cov hlau ruaj khov thiab cov qauv tsim uas tiv taus plua plav thiab dej txaws yuav tsum tau xav txog.
Hauv kev xaus lus, kev xaiv ntawm ib qholens luam theej kabyuav tsum muaj ib txoj kev uas yuav tsum tau ua kom tiav qhov yuav tsum tau ua thaum kuaj xyuas, suav cov yam ntxwv ntawm lub lens, sib phim cov interfaces thiab cov mechanisms mounting, thiab kev ntsuam xyuas qhov kev hloov pauv ntawm ib puag ncig. Txoj kev no feem ntau yuav tsum tau xav txog cov yam tseem ceeb uas tau hais los saum toj no kom paub tseeb tias yuav xaiv lub lens uas haum, yog li ntawd thiaj li tau txais cov txiaj ntsig zoo thiab ua tau raws li qhov xav tau ntawm daim ntawv thov tiag tiag.
Cov Lus Xaus:
Yog tias koj xav yuav ntau hom lens rau kev soj ntsuam, scanning, drones, smart home, lossis lwm yam kev siv, peb muaj yam koj xav tau. Tiv tauj peb hnub no kom paub ntau ntxiv txog peb cov lens thiab lwm yam khoom siv.
Lub sijhawm tshaj tawm: Plaub Hlis-21-2026
