Filayen ƙira sune matattarar ƙima, kuma aka sani da matattarar tsangwama, fina-finai na gani da ake amfani da su don rarrabuwar kawuna ko launi.Dangane da nau'in nau'in bakan da aka raba, an raba shi zuwa tace band-pass, tace mai yanke-kashe, tace Notch, da tacewa ta musamman.Gabaɗaya, ana kiranta da band-stop ko band-suppression filter, wanda ke nufin tacewa wanda ke da siffa mai ma'ana ta hanyar hasken tsawon zangon da aka ba shi, gwargwadon iyawa, ta hanyar sauran tsayin raƙuman ruwa gwargwadon iyawa.Fita ce mai yankewa, wanda galibi ana amfani da ita don kawarwa ko rage takamaiman haske da haɓaka sauran kuzarin gani.Zurfin yankewa da shimfidar wuri na watsawa shine maɓalli na ma'auni na ma'auni.Fitar da ƙima na iya watsa mafi yawan tsayin raƙuman raƙuman ruwa, amma rage haske a cikin takamaiman kewayon tsayin tsayi (band band) zuwa ƙaramin matakin ƙarami, wanda ya saba wa hanyar amfani da madaidaicin madaidaicin matatun bandpass.
Tsawon zangon tsakiya | FWHM (nm) | Toshewa | Watsawa (matsakaici) | zangon zango | Y/N na al'ada |
405nm ku | 40nm ku | OD4 | T≥90% | 350-900 nm | Y |
488nm ku | 40nm ku | OD4 | T≥90% | 350-900 nm | Y |
532nm ku | 40nm ku | OD4 | T≥90% | 350-900 nm | Y |
632.8nm | 40nm ku | OD4 | T≥90% | 350-900nm | Y |
785nm ku | 40nm ku | OD4 | T≥90% | 350-900 nm | Y |
808nm ku | 40nm ku | OD4 | T≥90% | 400-1100 nm | Y |