1.Yini emncane Isihlungi se-Band?

IsihlungiAmadivayisi abonakalayo asetshenziselwa ukukhetha ibhendi ye-radiation oyifunayo. Izihlungi ze-Marthwindi ziluhlobo lwesihlungi se-bandpass esivumela ukukhanya kububanzi obuthile be-wavenweth ukuze badluliselwe ekukhazimulweni okuphezulu, ngenkathi ukukhanya kwamanye amabanga ezinhlamvu kuzothathwa noma kuboniswe, ngaleyo ndlela kuboniswe umphumela wokuhlunga.

I-passbaba yezihlungi ze-band emincane iyinhle, ngokuvamile ingaphansi kuka-5% wenani eliphakathi nendawo, futhi lingasetshenziswa kabanzi ezinhlungwini eziningi, njengezinkanyezi, i-biomediciation, ukuqapha imvelo, ukuxhumana, njll.

2.Umsebenzi omncane izihlungi ze-band

Umsebenzi wesihlungi se-Marchew bhendi ukuhlinzeka ukukhethwa kwe-wavelength kohlelo lokubona, ikakhulukazi kulezi zinto ezilandelayo:

(1)Ukuqokwa kokukhethwa kokukhanya

Ibhendi emncaneisihlungiIngakwazi ukukhanga ngokukhetha ukukhanya kumabanga athile we-wavelength futhi kugcinwe ukukhanya ngamabanga athile e-wavelength. Lokhu kubalulekile ukuthi izinhlelo zokusebenza ezidinga ukwahlukanisa phakathi kwemithombo ekhanyayo yama-wavelength ahlukene noma adinga imithombo ekhanyayo yama-wavelength athile okuhlola noma okubonile.

(2)Yehlisa umsindo okhanyayo

Izihlungi ze-band emincane zingavimba ukukhanya kumabanga we-wavelthth angenasidingo, kunciphise ukukhanya okulahlekile kusuka emithonjeni ekhanyayo noma ukuphazamiseka kwesizinda, futhi uthuthukise umehluko wesithombe nokucaca.

Izihlungi zeqembu elincane

(3)Ukuhlaziywa kokubukeka

Izihlungi zeqembu elincane zingasetshenziselwa ukuhlaziya okubukelayo. Inhlanganisela yezihlungi zamabhendi amaningi amancane ingasetshenziswa ukukhetha ukukhanya kwama-wavelength athile futhi wenze okuqondile kokuhlaziywa kwe-spectral.

(4)Ukulawulwa kokukhanya okukhanyayo

Izihlungi zeqembu elincane nazo zingasetshenziswa ukulungisa ubukhulu bomthombo wokukhanya, ukulawula ubukhulu bokukhanya ngokukhipha noma ukuvimba ukukhanya kwama-wavelength athile.

3.Umgomo wokuhlunga kwe-narlow band

Ibhendi emncaneisihlungiSebenzisa into ephazamisayo yokukhanya ukuze udlulise noma ubonise ukukhanya kububanzi obuthile be-wavelength. Isimiso saso sisuselwa ekuphazanyisweni naseziciniso zokufakwa kokukhanya.

Ngokushintsha umehluko wesigaba ngesakhiwo sokufaka sezendlalelo zefilimu esincanyana, ukukhanya kuphela kuhlu lwe-wavelthth oluhlosiwe ngokukhethekile, futhi ukukhanya kwamanye ama-wavelength avinjelwe noma kuboniswe.

Ngokukhethekile, izihlungi ze-band emincane zivame ukugxiliswa yizendlalelo eziningi zamafilimu, kanye nenkomba evulekayo nobukhulu besendlalelo ngasinye sefilimu kwenziwa ngokuya ngezidingo zokwakhiwa.

Ngokulawula ubukhulu kanye nenkomba eyesikhathi esele phakathi kwezendlalelo zefilimu ezincanyana, umehluko wesigaba ungashintshwa ukuze ufinyelele imiphumela yokuphazamiseka ebangeni elithile le-wavengeth.

Lapho ukukhanya kwesigameko kudlula ngesihlungi sebhendi elincane, iningi lokukhanya lizokhonjiswa noma litholwe, futhi ukukhanya kuphela kububanzi obuthile be-wavenweth buzohanjiswa. Lokhu kungenxa yokuthi kusakhiwo esibonisa ukufakwa kwefilimuvova, ukukhanya kwe-wavelthth ethile kuzoveza umehluko wesigaba, futhi into ephazamisayo izokwenza ukuthi ukukhanya kwe-wavelengng ethile kuthuthukiswe, ngenkathi ukukhanya kwamanye ama-wavelengths kutholakala noma kuboniswe noma kumunwe.