Video: Yuav ua li cas diffraction txwv lub sharpness ntawm ib daim duab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Diffraction ua rau txhua qhov taw tes sib kis hauv lub voj voog zoo li tus qauv, Airy disk. Txoj kab uas hla ntawm lub disk yog ncaj qha proportional rau tus f-number: uas yog " diffraction txwv "Raws li tus naj npawb f tau nce, Airy disks loj dua. daim duab sharpest.
Tsis tas li ntawd, peb tuaj yeem tiv thaiv qhov sib txawv ntawm kev yees duab li cas?
Txawm hais tias koj tsis tuaj yeem hla txoj cai ntawm physics, muaj ib qho txoj kev kom tsis txhob diffraction hauv koj duab : siv lub aperture loj dua. Yog tias koj xav tau qhov tseeb tshaj plaws yees duab , qhov no tsuas yog txoj kev zam cov teebmeem ntawm kev txawv txav.
Ib tug kuj yuav nug, dab tsi yog diffraction hauv kev yees duab? LENS DIFFRACTION & PHOTOOGRAPHY . Diffraction yog qhov teebmeem optical uas txwv tag nrho cov kev daws teeb meem ntawm koj kev yees duab - tsis muaj teeb meem pes tsawg megapixels koj lub koob yees duab yuav muaj. Nws tshwm sim vim lub teeb pib tawg los yog "diffract" thaum dhau los ntawm qhov qhib me me (xws li koj lub koob yees duab aperture).
Hais txog qhov no, dab tsi yog diffraction txwv aperture?
Diffraction - txwv - Aperture . DLA yog lub ntsiab lus rau Diffraction Limited Aperture . Qhov no aperture tus nqi yog qhov tshwm sim ntawm tus lej lej uas kwv yees tus aperture qhov twg kev txawv txav pib pom qhov tsis zoo rau cov duab sharpness ntawm qib pixel.
Vim li cas thiaj muaj qhov txwv tsis pub muaj?
Cov Abbe diffraction txwv rau microscope kom nce tus kev daws teeb meem, luv wavelengths tuaj yeem siv tau xws li UV thiab X-ray microscopes. Cov txheej txheem no muab kev daws teeb meem zoo dua tab sis kim, raug kev txom nyem los ntawm qhov tsis sib xws hauv cov qauv lom neeg thiab yuav ua rau puas tsuaj tus qauv.
Pom zoo:
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