Yuav ua li cas xam qhov magnification ntawm microscope

Microscopes tau ua ib qho kev tshawb fawb tseem ceeb rau ntau pua xyoo, tso cai rau cov kws tshawb fawb thiab cov kws tshawb fawb nkag mus rau lub ntiaj teb tsis pom. Lub peev xwm nthuav dav cov khoom thiab cov kab mob tau pab ua ntej kev nkag siab txog kev tshawb fawb thiab tau ua rau muaj kev cuam tshuam ntau heev. Ib qho ntawm cov khoom tseem ceeb ntawm lub tshuab tsom iav yog nws qhov kev nthuav dav, uas yog hais txog qhov degree uas cov duab ntawm ib yam khoom lossis cov kab mob loj hlob mus rau nws qhov loj me. Qhov no magnification yog qhia nyob rau hauv cov nqe lus ntawm tus lej nqi hu ua magnification factor los yog magnification zog.

 

Feem ntau, muaj ob hom microscopes: optical microscopes thiab electron microscopes. Optical microscopes siv lub teeb pom kev los ua kom pom cov qauv thiab tuaj yeem muaj lub zog loj ntawm 40x txog 1000x. Electron microscopes, ntawm qhov tod tes, siv cov khoom siv hluav taws xob los tsim cov duab, thiab tuaj yeem ua tiav lub zog loj dua, txog li ib lab zaug.

 

Tam sim no, peb tuaj yeem tham txog yuav ua li cas los laij qhov kev nthuav dav ntawm optical microscope.

 

Nyob rau hauv optical microscopes, muaj ob hom lo ntsiab muag uas ua rau kom magnification: lub hom phiaj & eyepiece. Lub hom phiaj yog lub luag haujlwm rau kev sau thiab tsom teeb pom kev los ntawm cov qauv, thaum lub lens eyepiece pab nthuav cov duab ntxiv. Lub zog loj ntawm lub tshuab ntsuas qhov muag yog qhov khoom ntawm qhov loj ntawm lub hom phiaj lens thiab qhov loj ntawm lub qhov muag qhov muag.

Cov duab pom nyob rau hauv lub optical microscope tsuas yog ib tug dav hlau duab ntawm cov qauv, yog li nws magnification yog hais txog qhov sib txuas magnification ntawm qhov ntev lossis dav ntawm cov qauv, tsis yog qhov sib txuas ntawm qhov ntim ntawm qhov khoom, lossis qhov sib txuas ntawm qhov loj ntawm cov khoom. thaj tsam ntawm qhov khoom, tsis yog qhov sib thooj ntawm qhov chaw ntawm daim duab.

 

Muaj ob lub ntsiab lus ntawm kev nthuav dav tag nrho, ib qho yog optical magnification, thiab lwm yam yog digital magnification (digital magnification tsuas yog koom nrog thaum cov khoom siv duab txuas nrog).

 

1. Optical magnification yog hais txog qhov loj ntawm cov khoom pom los ntawm lub qhov muag ntawm lub tshuab tsom. Txoj kev suav ntawm optical magnification yog qhov yooj yim, uas yog, lub hom phiaj lens ntau * eyepiece ntau.

 

Piv txwv li, thaum xam qhov magnification ntawm lub stereoscopic microscope, lub hom phiaj ntawm ib tug nruam zoom stereoscopic microscope feem ntau yog 0.68-4.7X, thiab tag nrho cov magnification ntawm lub microscope yog 6.{{4} }X thaum lub qhov muag yog 10X.

 

Kev suav cov tshuab kuaj kab mob lom neeg thiab cov tshuab kuaj kab mob metallographic yog yooj yim dua. Lub hom phiaj ntawm kev teeb tsa yog 4X / 10X / 40X / 100X. Cov pa configuration ntawm eyepiece yog 10X, 15X thiab 20X. Tag nrho cov magnification tuaj yeem tau txais los ntawm kev sib faib ntau qhov ntawm qhov muag thiab lub hom phiaj feem.

 

2 Digital magnification

 

Digital magnification yog hais txog qhov kev nthuav dav pom ntawm daim duab tom qab lub cuab yeej sab nraud txuas nrog. Tam sim no, kev ua lag luam feem ntau yog siv lub tshuab microscope, uas txuas nrog lub khoos phis tawj, saib lossis TV los ntawm CCD / CMOS lub koob yees duab rau kev soj ntsuam, txhawm rau txo qhov muag nkees thiab tib lub sijhawm txhawb kev sib koom nrog lwm tus.

 

1 Ntsuas cov duab ncaj qha

 

Muab micrometer rau ntawm lub tshuab hluav taws xob thiab kho nws kom tau txais cov duab micr ntawm lub monitor, thiab tom qab ntawd coj tus pas ntsuas ncaj qha ntsuas qhov ntev ntawm micrometer ntawm lub monitor,

 

Kev ntsuas qhov tshwm sim ntawm ib daim phiaj / qhov ntev ntawm txhua daim phiaj ntawm micrometer= khoom magnification

 

object magnification/objective magnification =digital magnification.

 

Feem ntau, qhov ntsuas yuav raug ntxiv rau daim duab los qhia qhov loj ntawm cov khoom hloov kho.

 

Lus Cim: Yog tias tsis muaj micrometer, nws tuaj yeem hloov tau los ntawm tus kav. Nyob rau tib lub sijhawm, nws tuaj yeem ntsuas ob peb daim phiaj ntxiv thaum lub sijhawm xam los txo qhov yuam kev.

2 Xam qhov tseeb magnification los ntawm tus qauv

Digital magnification=lub hom phiaj magnification * {25.4 * screen loj (inch)/camera diagonal} * adapter magnification.

Nco tseg:

1) Lub hom phiaj lens ntau yog hais txog ntau yam ntawm lub hom phiaj lens ntawm lub tshuab tsom iav uas koj siv tam sim no, xws li 20X

2) Magnification ntawm lub adapter: yog hais txog qhov loj ntawm qhov txuas ntawm lub tshuab tsom iav thiab cov khoom siv duab, feem ntau yog 1x, tab sis kuj yog 0.35, 0.5, thiab 0. 75x ib

3.

4) Lub koob yees duab kab pheeb ces kaum: hais txog lub nti loj ntawm CCD / CMOS, feem ntau yog 1/3 nti, 1/2 nti, 2/3 nti, thiab qhov sib txuas ntev yog 6 hli; 8 hli; 11 hli.

 

Piv txwv li: , lub hom phiaj yog 40X, C-mount yog 0.5X, saib loj yog 27", lub koob yees duab yog 1/2.8"(5.18 * 3.89mm) 5.0MP lub koob yees duab((Nco tseg:kab pheeb ces kaum ntawm lub koob yees duab no yog hais txog 5.05mm, nws yog xam).

 

Tam sim no,digital magnification {{0}}*0.5*27"*25.4/5.05=2716