Hom ntawmlub lens kev lag luamnce

Muaj plaub hom interface, uas yog F-mount, C-mount, CS-mount thiab M12 mount. F-mount yog lub interface dav dav, thiab feem ntau haum rau cov lens uas muaj qhov ntev focal ntev dua 25mm. Thaum qhov ntev focal ntawm lub lens tsom tsawg dua li 25mm, vim qhov me me ntawm lub lens tsom, C-mount lossis CS-mount siv, thiab qee qhov siv M12 interface.

Qhov sib txawv ntawm C mount thiab CS mount

Qhov sib txawv ntawm C thiab CS interfaces yog tias qhov deb ntawm qhov chaw sib cuag ntawm lub lens thiab lub koob yees duab mus rau lub dav hlau focal ntawm lub lens (qhov chaw uas CCD photoelectric sensor ntawm lub koob yees duab yuav tsum nyob) yog txawv. Qhov deb rau C-mount interface yog 17.53 hli.

Ib lub nplhaib adapter 5mm C/CS tuaj yeem ntxiv rau lub lens CS-mount, yog li nws tuaj yeem siv nrog cov koob yees duab C-hom.

Qhov sib txawv ntawm C mount thiab CS mount

Cov yam ntxwv tseem ceeb ntawm cov iav lag luam

Thaj chaw pom (FOV):

FOV txhais tau tias qhov pom ntawm cov khoom uas pom, uas yog, qhov ntawm cov khoom uas lub koob yees duab lub sensor ntes tau. (Qhov ntau ntawm qhov pom yog qee yam uas yuav tsum nkag siab hauv kev xaiv)

Thaj chaw pom

Kev Ua Haujlwm Nrug Deb (WD):

Hais txog qhov deb ntawm sab xub ntiag ntawm lub lens mus rau yam khoom uas raug kuaj. Ntawd yog, qhov deb ntawm qhov chaw kom pom tseeb.

Kev daws teeb meem:

Qhov me tshaj plaws ntawm cov yam ntxwv uas pom tau ntawm yam khoom uas tau kuaj xyuas uas lub tshuab ntsuas duab tuaj yeem ntsuas tau. Feem ntau, qhov pom me dua, qhov kev daws teeb meem zoo dua.

Qhov tob ntawm kev pom (DOF):

Lub peev xwm ntawm lub lens los tswj qhov kev daws teeb meem xav tau thaum cov khoom nyob ze lossis deb ntawm qhov chaw zoo tshaj plaws.

Qhov tob ntawm qhov pom

Lwm cov parameter ntawmcov iav tsom iav lag luam

Qhov loj ntawm cov duab ci ntsa iab:

Qhov loj ntawm thaj chaw zoo ntawm lub koob yees duab sensor chip, feem ntau yog hais txog qhov loj ntawm kab rov tav. Qhov parameter no tseem ceeb heev rau kev txiav txim siab qhov scaling ntawm lub lens kom tau txais qhov chaw pom uas xav tau. Qhov piv ntawm lub lens magnification (PMAG) yog txhais los ntawm qhov sib piv ntawm qhov loj ntawm lub sensor chip rau qhov chaw pom. Txawm hais tias cov kev cai yooj yim suav nrog qhov loj thiab qhov chaw pom ntawm lub photosensitive chip, PMAG tsis yog qhov parameter yooj yim.

Qhov loj ntawm cov duab ci ntsa iab

Qhov ntev ntawm lub zeem muag (f):

"Qhov ntev ntawm lub teeb yog qhov ntsuas ntawm qhov sib sau ua ke lossis qhov sib txawv ntawm lub teeb hauv lub tshuab kho qhov muag, uas yog hais txog qhov deb ntawm qhov chaw nruab nrab ntawm lub lens mus rau qhov chaw sib sau ua ke ntawm lub teeb. Nws tseem yog qhov deb ntawm qhov chaw nruab nrab ntawm lub lens mus rau lub dav hlau duab xws li zaj duab xis lossis CCD hauv lub koob yees duab. f = {qhov deb ua haujlwm / thaj chaw pom ntev (lossis luv)} XCCD sab ntev (lossis luv)

Qhov cuam tshuam ntawm qhov ntev focal: qhov me dua qhov ntev focal, qhov tob ntawm daim teb ntau dua; qhov me dua qhov ntev focal, qhov ntau dua qhov distortion; qhov me dua qhov ntev focal, qhov loj dua qhov vignetting phenomenon, uas txo qhov illumination ntawm ntug ntawm aberration.

Kev daws teeb meem:

Qhia txog qhov deb tsawg kawg nkaus ntawm 2 lub ntsiab lus uas tuaj yeem pom los ntawm ib pawg ntawm cov iav tsom iav

0.61x siv wavelength (λ) / NA = kev daws teeb meem (μ)

Txoj kev xam saum toj no tuaj yeem xam qhov kev daws teeb meem, tab sis tsis suav nrog kev cuam tshuam.

※ Lub wavelength siv yog 550nm

Kev txhais lus:

Tus naj npawb ntawm cov kab dub thiab dawb tuaj yeem pom nyob hauv nruab nrab ntawm 1 hli. Chav (lp)/hli.

MTF (Kev Hloov Chaw Hloov Pauv)

MTF

Kev cuam tshuam:

Ib qho ntawm cov cim qhia txog kev ua tau zoo ntawm lub lens yog aberration. Nws hais txog txoj kab ncaj nraim sab nraum lub axis tseem ceeb hauv lub dav hlau ntawm tus neeg, uas dhau los ua ib qho nkhaus tom qab raug thaij duab los ntawm lub tshuab kho qhov muag. Qhov yuam kev thaij duab ntawm lub tshuab kho qhov muag no hu ua distortion. Distortion aberrations tsuas yog cuam tshuam rau geometry ntawm daim duab, tsis yog qhov ntse ntawm daim duab.

Qhov Aperture thiab F-Number:

Ib daim ntawv lenticular yog ib lub cuab yeej siv los tswj qhov ntau ntawm lub teeb hla lub lens, feem ntau yog sab hauv lub lens. Peb siv tus nqi F los qhia qhov loj ntawm lub qhov, xws li f1.4, F2.0, F2.8, thiab lwm yam.

Qhov Aperture thiab F-Number

Kev loj hlob ntawm lub zeem muag:

Cov mis siv los xam qhov piv txwv tseem ceeb yog raws li nram no: PMAG = qhov loj ntawm lub sensor (hli) / qhov pom (hli)

Kev nthuav dav ntawm cov zaub

Kev siv lub tshuab tsom iav los tsom qhov loj ntawm cov khoom ntsuas tau dav dav. Kev siv lub tshuab tsom iav los tsom qhov loj ntawm cov khoom ntsuas tau nyob ntawm peb yam tseem ceeb: kev siv lub lens los tsom qhov loj, qhov loj ntawm lub sensor chip ntawm lub koob yees duab kev lag luam (qhov loj ntawm qhov chaw tsom), thiab qhov loj ntawm cov khoom tso tawm.

Kev loj ntawm lub vijtsam = kev loj ntawm lub lens optical × qhov loj ntawm lub vijtsam × 25.4 / qhov loj ntawm lub kaum sab xis

Cov pawg tseem ceeb ntawm cov iav tsom iav kev lag luam

Kev faib tawm

•Los ntawm qhov ntev ntawm lub focal: prime thiab zoom

•Los ntawm qhov qhib: qhov qhib ruaj khov thiab qhov qhib hloov pauv

Los ntawm interface: C interface, CS interface, F interface, thiab lwm yam.

•Muab faib los ntawm ntau yam: lub lens magnification ruaj khov, lub lens zoom txuas ntxiv mus

• Cov iav tseem ceeb heev uas siv rau hauv kev lag luam pom kev siv tshuab feem ntau suav nrog FA iav, telecentric iav thiab microscopes kev lag luam, thiab lwm yam.

Cov ntsiab lus tseem ceeb uas yuav tsum tau xav txog thaum xaiv ib qholub lens pom kev ntawm lub tshuab:

1. Qhov pom kev, qhov loj ntawm lub lens thiab qhov deb ua haujlwm xav tau: Thaum xaiv lub lens, peb yuav xaiv lub lens uas muaj qhov pom kev loj dua li qhov khoom uas yuav ntsuas, txhawm rau kom yooj yim tswj kev txav mus los.

2. Qhov tob ntawm qhov chaw uas yuav tsum tau ua: Rau cov haujlwm uas xav tau qhov tob ntawm qhov chaw, siv lub qhov me me kom ntau li ntau tau; thaum xaiv lub lens nrog lub magnification, xaiv lub lens nrog lub magnification qis raws li qhov project tso cai. Yog tias qhov project xav tau ntau dua, kuv feem ntau xaiv lub lens tshiab nrog lub tob ntawm qhov chaw siab.

3. Qhov loj ntawm lub sensor thiab lub koob yees duab interface: Piv txwv li, lub lens 2/3″ txhawb nqa qhov loj tshaj plaws ntawm lub koob yees duab kev lag luam rake nto yog 2/3″, nws tsis tuaj yeem txhawb nqa lub koob yees duab kev lag luam loj dua 1 nti.

4. Qhov chaw muaj: Nws tsis tsim nyog rau cov neeg siv khoom hloov qhov loj ntawm cov khoom siv thaum lub tswv yim yog xaiv tau.