Tsev > Xov xwm > Ntsiab lus

Anti-paab Txheej

May 13, 2017

Ib antireflective los yog anti-thiaj (AR) txheej yog ib hom ntawm kho qhov muag txheej thov mus rau qhov chaw ntawm lo ntsiab muag thiab lwm yam kho qhov muag hais rau txo thiaj. Nyob rau hauv raug imaging tshuab, qhov no pab txoj kev ua hauj lwm zoo vim tsawg lub teeb yog poob lawm. Nyob rau hauv txoj tshuab xws li ib tug lub tsom iav raj, cov yuav txo tau nyob rau hauv reflections kuj pab txoj kev zoo ntawm cov duab los ntawm tshem tawm ntawm stray teeb. Qhov no yog tshwj xeeb tshaj yog ib qho tseem ceeb nyob rau hauv planetary astronomy. Nyob rau hauv lwm yam kev siv, cov thawj pab yog cov tshem tawm ntawm lub thiaj nws tus kheej, xws li ib tug txheej on eyeglass lo ntsiab muag uas ua rau lub qhov muag ntawm tus wearer ntau pom mus rau lwm tus neeg, los yog ib tug txheej los txo cov glint los ntawm ib tug covert tuav lub binoculars los yog telescopic pom.

Muaj ntau coatings muaj pob tshab nyias zaj duab xis lug nrog alternating khaubncaws sab nraud povtseg ntawm contrasting refractive index. Txheej thicknesses tau raug xaiv los ua tug cuam nyob rau hauv lub beams reflected los ntawm cov interfaces, thiab constructive cuam nyob rau hauv lub sib nug xov kis kab teeb. Qhov no ua rau cov qauv kev kawm hloov nrog wavelength thiab teeb meem lub, yog li ntawd xim los feem ntau tshwm sim tom oblique cov ces kaum. Ib tug wavelength ntau yuav tsum tau teev thaum tsim los yog ordering xws coatings, tab sis kev kawm zoo tau feem ntau yuav tiav rau ib tug kuj ntau yam ntawm frequencies: feem ntau ib tug xaiv ntawm IR, pom, los yog UV yog muaj.

Anti-paab coatings yog siv nyob rau hauv ib tug ntau yam ntawm daim ntaub ntawv twg lub teeb kis tau los ntawm ib tug kho qhov muag nto, thiab tsis tshua muaj poob los yog tsawg thiaj yog qhov kev kawm. Piv txwv li anti-glare coatings rau kho lo ntsiab muag thiab lub koob yees duab lens hais, thiab antireflective coatings rau hnub ci hlwb.