Dab tsi yog qhov tob ntawm thaj chaw ntawm lub tshuab kuaj kab mob bio
Lwm lub npe rau qhov tob ntawm kev ua kom pom tseeb ntawm lub tshuab kuaj kab mob lom neeg yog scenery, thiab qhov tob ntawm kev ua kom pom tseeb yog luv rau qhov tob ntawm kev tsom. Yuav ua li cas to taub qhov tob ntawm kev tsom xam? Thaum peb saib cov khoom peb-dimensional, peb maj mam kho qhov ntxhib thiab zoo hloov kho ntawm lub tshuab kuaj kab mob lom kom lub hom phiaj lens ze rau cov khoom hauv kev tshuaj xyuas. Lub sijhawm no, ib feem ntawm cov khoom saum toj kawg nkaus ntawm lub dav hlau ze tshaj plaws rau lub hom phiaj lens yog qhov tseeb tshaj plaws, tsis yog tsuas yog ib feem ntawm qib no yog qhov tseeb, tab sis kuj yog ib feem nrog qee qhov tuab hauv qab no kuj pom tau meej meej. Qhov no kom meej meej resolvable thickness yog qhov tob ntawm daim teb ntawm lub tshuab tsom. Qhov ntau dua qhov tob ntawm daim teb, cov khoom ntau tuaj yeem pom vertically. Txwv tsis pub, tsuas yog ib txheej nyias nyias tuaj yeem pom meej.
Qhov tob ntawm thaj chaw muaj feem xyuam nrog cov txheej txheem tsis zoo ntawm lub tshuab tsom. Ua ntej, qhov tob ntawm kev tsom xam yog inversely proportional rau tag nrho magnification thiab tus lej aperture ntawm lub hom phiaj lens. Lwm yam tsis hloov pauv. Qhov loj dua qhov magnification, qhov me me qhov tob ntawm tsom iav tsom iav. Ib yam li ntawd, qhov me me ntawm cov lej aperture ntawm lwm qhov tsis muaj. Qhov loj dua, qhov me me qhov tob ntawm kev tsom xam. Qhov thib ob, qhov tob ntawm kev tsom xam muaj qee qhov kev sib raug zoo nrog kev daws teeb meem. Qhov loj dua qhov tob ntawm kev tsom xam, qhov kev daws teeb meem ntawm lub tshuab kuaj kab mob ntshav qis qis dua.
Txhawm rau daws cov teeb meem saum toj no ob peb qhov tsis sib xws thiab xav kom tau txais cov duab ntxim nyiam ntawm qhov tob ntawm thaj chaw, kev nthuav dav thiab kev daws teeb meem siab, peb tuaj yeem daws nws los ntawm cov duab digital. Qee lub tshuab luam ntawv digital muaj kev ua haujlwm ntawm txheej txheej. Thaum peb xav tau qhov tob ntawm qhov chaw thiab siab Rau kev nthuav dav thiab kev daws teeb meem siab, cov dluab ntawm qhov loj loj thiab qhov tob ntawm qhov chaw ntawm tag nrho cov khoom ntawm txhua theem raug xa mus rau lub computer los ntawm CCD, thiab tom qab ntawd cov duab ua software nrog. txheej merging muaj nuj nqi txuam nrog CCD yog siv los hloov pauv txhua Tom qab sib koom ua ke cov duab siab txhais ntawm cov txheej txheem sib txawv, peb tuaj yeem thaum kawg tau txais cov duab nrog qhov tob ntawm daim teb, siab magnification thiab siab daws teeb meem.
