LCP-28 Abbe Imaging thiab Spatial Filtering Experiment

Lus piav qhia luv luv:

Lub hauv paus ntsiab lus ntawm Abbe imaging ntseeg hais tias cov txheej txheem imaging ntawm lub lens yuav muab faib ua ob kauj ruam: thawj kauj ruam yog tsim ib tug spatial spectrum ntawm lub rear focal dav hlau (spectrum dav hlau) ntawm lub lens los ntawm lub teeb diffracted los ntawm cov khoom, uas yog lub "frequency division" cuam tshuam los ntawm diffraction;Qhov thib ob kauj ruam yog kom coherently superimpose lub beams ntawm txawv spatial frequencies ntawm daim duab dav hlau los ua ib tug duab ntawm cov khoom, uas yog lub "synthesis" nyhuv tshwm sim los ntawm kev cuam tshuam.Ob kauj ruam ntawm cov txheej txheem imaging yog qhov tseem ceeb ob Fourier transforms.Yog tias ob qhov Fourier transforms yog qhov zoo tagnrho, uas yog, tsis muaj cov ntaub ntawv poob, ces cov duab thiab cov khoom yuav tsum zoo sib xws.Yog hais tias muaj ntau yam spatial lim tau teem rau ntawm qhov chaw spectrum los thaiv qee qhov spatial zaus ntawm cov spectrum, cov duab yuav hloov.spatial filtering yog muab ntau yam spatial lim rau ntawm qhov chaw spectrum ntawm qhov kho qhov muag, tshem tawm (los yog xaiv kom dhau) qee qhov spatial frequencies lossis hloov lawv qhov amplitude thiab theem, kom cov duab ob sab ntawm cov khoom tuaj yeem txhim kho raws li qhov xav tau.Qhov no kuj yog qhov tseem ceeb ntawm coherent optical processing.