Lub teeb hauv Optical Microscope
Apr 17, 2023
Lub kaw lus kho qhov muag uas txwv qhov aperture ntawm lub teeb pom kev zoo lossis cov duab ntau hauv qhov kho qhov muag hu ua "diaphragm", uas yog ib qho cuab yeej zoo rau kev kho qhov aberrations.
Hauv kev xyaum, qhov kho qhov muag yuav muaj ntau qhov apertures. Peb txhais lub aperture aperture raws li lub aperture, uas txiav txim qhov loj (dav) ntawm cov duab beam nyob rau hauv ib tug optical system. Nws txoj haujlwm yog los tswj lub zog ntawm lub teeb nkag mus rau qhov kho qhov muag; Txiav txim siab qhov kev daws teeb meem ntawm qhov kho qhov muag; Tshem tawm lub teeb tsis pom kev thiab kho cov axis aberrations hauv cov tshuab kho qhov muag.
Feem ntau aperture apertures: tib neeg cov menyuam kawm ntawv, lub koob yees duab aperture, thiab lwm yam.
Aperture Diaphragm hauv Microscope
1. Hloov tus lej aperture
Aperture diaphragm yog ntsia rau ntawm lub condenser. Txawm hais tias kho lub aperture diaphragm tuaj yeem hloov lub teeb siv, nws tsis yog nws txoj haujlwm tseem ceeb, yog li tsis txhob kho lub teeb siv los ntawm txoj kev no. Lub luag haujlwm ntawm aperture diaphragm yog hloov NA tus nqi ntawm lub condenser los ntawm kev hloov nws qhov loj.
2. Tshem tawm qhov tsis xws luag
Ntawm ntau qhov aberrations, spherical aberration, coma, thiab optical axis yog ze ze. Ntawm lawv, spherical aberration yog tsim los ntawm ib lub teeb xim ib leeg, uas yog vim muaj qhov sib txawv ntawm lub teeb ze ntawm lub teeb thiab lub teeb tsis nyob ze. Yog hais tias lub aperture aperture raug txo, nws tuaj yeem thaiv qhov nkag ntawm qhov tsis nyob ze ntawm lub teeb, yog li tshem tawm spherical aberration.
Teb Diaphragm hauv Microscope
Daim teb diaphragm feem ntau piav qhia txog cov duab ntau ntawm cov duab kho qhov muag ntawm cov khoom lossis duab dav hlau (los yog hauv cov khoom lossis duab qhov chaw). Hauv cov tshuab kho qhov muag, lub aperture muab tso rau ntawm cov khoom siv dav hlau lossis cov duab dav hlau los txwv cov duab ntau yog feem ntau hu ua qhov chaw saib aperture. Tej zaum nws yuav yog lub lens thav duab lossis ib txheej ntawm lub lens thav duab hauv qhov muag pom, lossis nws yuav yog qhov tsim tshwj xeeb aperture.
