Lub hauv paus ntsiab lus imaging ntawm magnifying iav
Lub lens kho qhov muag ua los ntawm iav lossis lwm cov ntaub ntawv pob tshab nrog lub ntsej muag nkhaus tuaj yeem nthuav dav thiab cov duab khoom. Daim duab kho qhov muag pom tau pom hauv daim duab 1. Cov khoom AB nyob rau hauv qhov chaw focal F ntawm cov khoom sab, thiab nws qhov loj me yog y, hloov mus rau hauv cov duab virtual A'B' ntawm qhov loj y' los ntawm lub iav magnifying.
iav magnifying iav
Γ=250/f'
Hauv cov qauv, 250--photopic nrug, chav tsev yog mm
f'-- lub focal ntev ntawm lub iav magnifying, hauv mm
Qhov kev nthuav dav yog hais txog qhov sib piv ntawm lub kaum sab xis saib ntawm cov duab pom nrog lub iav tsom mus rau qhov pom lub kaum sab xis ntawm cov khoom pom yam tsis muaj lub iav loj nyob rau hauv qhov deb ntawm 250mm.
