Sesefa sa "Band pass" se ka arola sehlopha sa leseli la monochromatic, phetisetso e nepahetseng ea sefahla sa "band-pass" ka har'a bandwidth ke 100%, athe sehlopha sa 'nete sa "band-pass" ha se sekwere se loketseng. Setlhopha sa 'nete sa "band-pass" ka kakaretso se na le "wavelength e bohareng" λ0, "transmittance" T0, bophara ba halofo ea "pass band" (FWHM, sebaka se pakeng tsa maemo a mabeli moo phetisetso ea sehlopha sa "pass" e leng halofo ea phetisetso ea tlhoro) lintlha tse ling tsa bohlokoa ho hlalosa.
Band-pass filthara e arotsoe ka filthara e moqotetsane le filthara ea Broadband.
Ka kakaretso, bandwidth e moqotetsane haholo kapa moepa o phahameng haholo o tla etsa hore sehlahisoa se be thata ho feta ho sebetsa; Khabareng, phetisetso ea sehlopha sa pase le botebo bo khaotsoeng hape ke sesupo se hanyetsanang
Li-filters tsa "band-pass" tsa Wuhan Especial Optics li entsoe ka mokoloko oa likarolo tse lekanang tsa dielectric. Palo ea mekhahlelo le botenya li baloa ka botebo bo botle ba ho khaola (hangata ho fihla ho OD5 kapa holimo), moepa o betere le phetisetso e phahameng (70% narrowband, 90% broadband).
Lisebelisoa:
1. Fluorescence microscopy
2. Ho lemoha ha Raman fluorescence
3. Teko ea karolo ea mali
4. Ho lemoha tsoekere ea lijo kapa litholoana
5. Tlhahlobo ea boleng ba metsi
6. Laser interferometer
7. Ho cheselletsa liroboto
8. Tebello ea sebonela-hōle sa linaleli tsa leholimo nebula ea leholimo
9. Laser ho tloha joalo-joalo
Boleng ba Pele, Tšireletseho e Tiisitsoe