I-LCP-28 yokuThengisa i-Abbe kunye neSpatial Filtering Experiment Featured Image

I-LCP-28 yoMfanekiso we-Abbe kunye noVavanyo loHluzo lweSithuba

Inkcazelo emfutshane:

Umgaqo we-Abbe imaging ukholelwa ukuba inkqubo yokucinga ye-lens inokohlulwa ibe ngamanyathelo amabini: inyathelo lokuqala kukwenza i-spatial spectrum kwi-plane ekugxilwe kuyo ngasemva (i-spectrum plane) ye-lens ngokukhanya okwahlukanisiweyo ukusuka kwinto, ekuyiyo. "ulwahlulo lwefrikhwensi" isiphumo esibangelwa yi-diffraction;Inyathelo lesibini kukubeka ngokuhambelanayo imiqadi yee-frequency zesithuba ezahlukeneyo kwinqwelomoya yomfanekiso ukwenza umfanekiso wento, eyi "synthesis" isiphumo esibangelwa kukuphazamiseka.Amanyathelo amabini enkqubo yomfanekiso aziinguqu ezimbini zeFourier.Ukuba ezi zimbini zokuguqula i-Fourier zifanelekile ngokupheleleyo, oko kukuthi, akukho kulahleka kolwazi, ngoko umfanekiso kunye nento kufuneka ifane ngokupheleleyo.Ukuba izihluzo zesithuba ezahlukeneyo zisetwe kumphezulu we-spectrum ukuvala iinxalenye ezithile ze-spatial frequency ze-spectrum, umfanekiso uya kutshintsha.Uhluzo lwesithuba kukubeka izihluzo zesithuba ezahlukeneyo kumphezulu we-spectrum wenkqubo yamehlo, ukususa (okanye ukhethe ukudlula) amaza athile omhlaba okanye utshintshe i-amplitude kunye nesigaba, ukuze umfanekiso wento emacala mabini ube nokuphuculwa njengoko kufuneka.Oku kukwangundoqo wokucutshungulwa okuhambelanayo kwamehlo.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Iimvavanyo
1. Yomeleza ukuqondwa kweengqikelelo ze-spatial frequency, i-spatial frequency spectrum kunye nohluzo lwesithuba kwii-Fourier optics.
2. Uqhelene nendlela yokucoca indawo kunye neendlela zokufumana ukupasa okuphezulu, ukupasa okuphantsi kunye nokucoca umkhombandlela.

Iinkcukacha

Umthombo wokukhanya omhlophe	12V,30W
Yena-Ne laser	632.8nm, amandla>1.5mW
Umzila kaloliwe obonakalayo	1.5m
Izihluzi	Isihluzi se-Spectrum, i-zero-order filter, icebo lokucoca umkhombandlela, isihluzo esidlulayo esisezantsi, isihluzi sokupasa okuphezulu, isihluzo sokugqitha ibhendi, isihluzo esincinci somngxuma.
Ilensi	f=225mm,f=190mm,f=150mm,f=4.5mm
Ukwahluza	Ugqithiso lwegrayiti 20L/mm, igrayiti enamacala amabini 20L/mm, igama legridi 20L/mm, θ ibhodi yokumodareyitha
I-diaphragm elungisekayo	0-14mm ehlengahlengiswayo
Abanye	Isilayidi, Isibambi sokuthambeka kwe-axis ezimbini, isibambi selensi, isibuko senqwelomoya, isibambi sepleyiti