1.Chii chinonzi diki sefa yebhendi?

Mafiritazvishandiso zve optical zvinoshandiswa kusarudza radiation band inodiwa. Narrow band filters imhando ye bandpass filter inobvumira chiedza chiri munzvimbo yakatarwa ye wavelength kuti chitumirwe nekupenya kwakanyanya, nepo chiedza chiri mune dzimwe nzvimbo dze wavelength chichatorwa kana kuratidzwa, nokudaro zvichiwana mhedzisiro yekusefa.

Bhandi rekufambisa remafirita ebhandi rakamanikana rakatetepa, kazhinji kacho riri pasi pe5% yehukuru hwewavelength yepakati, uye rinogona kushandiswa zvakanyanya muzvikamu zvakasiyana-siyana, zvakaita sekuongorora nyeredzi, biomedicine, kutarisa zvakatipoteredza, kutaurirana, nezvimwewo.

2.Basa re "nhete" mafirita ebhendi

Basa re "narrow band filter" nderekupa mukana wekusarudza wavelength ye "optical system", kunyanya mune zvinotevera:

(1)Kusefa kwechiedza kwakasarudzwa

Bhendi rakamanikanamafiritainogona kusvina chiedza nenzira yakasarudzika mune mamwe marefu ehurefu hwewavelength uye kuchengetedza chiedza mune mamwe marefu ehurefu hwewavelength. Izvi zvakakosha kune mashandisirwo anoda kusiyanisa pakati pematsime echiedza emarefu akasiyana kana kuti anoda matsime echiedza emarefu chaiwo ewavelengths pakuedza kana kucherechedza.

(2)Deredza ruzha rwechiedza

Mafirita emabhandi madiki anogona kuvharira chiedza munzvimbo dzisingadiwi dzewavelength, kuderedza chiedza chinobva kuchiedza kana kupindira kwechiedza chekumashure, uye kunatsiridza kusiyana kwemufananidzo nekujeka.

Mafirita ebhendi akamanikana

(3)Kuongorora kweSpectral

Mafirita ebhandi rakamanikana anogona kushandiswa pakuongorora maspectral. Kusanganiswa kwemafirita akawanda ebhandi rakamanikana kunogona kushandiswa kusarudza chiedza chemarefu chaiwo uye kuita ongororo chaiyo yemaspectral.

(4)Kudzora kusimba kwechiedza

Mafirita emabhandi madiki anogonawo kushandiswa kugadzirisa simba rechiedza chechiedza, kudzora simba rechiedza nekutumira kana kuvhara chiedza chemawavelengths chaiwo nenzira yakasarudzwa.

3.Nheyo yebhendi rakamanikana firita

Bhendi rakamanikanamafiritaShandisa chiitiko chekupindira kwechiedza kuti usarudze kana kuratidza chiedza munzvimbo yakatarwa yewavelength. Nheyo yacho inobva pane zvinoitwa nechiedza pakupindira uye kupinza chiedza.

Nekugadzirisa musiyano wechikamu muchimiro chekurongedza kwemafirimu matete, chiedza chiri muhuwandu hwewavelength chinongotumirwa nenzira yakasarudzwa, uye chiedza chemamwe mawavelength chinovharwa kana kuratidzwa.

Zvikuru sei, mafirita emabhandi matete anowanzo rongwa nemafirimu akawanda, uye refractive index nehukobvu hwechikamu chimwe nechimwe chefirimu zvinogadziriswa zvinoenderana nezvinodiwa pakugadzira.

Nekudzora ukobvu uye refractive index pakati pezvikamu zvitete zvefirimu, musiyano wechikamu chechiedza unogona kugadziriswa kuti uwane mhedzisiro yekupindira mune yakatarwa wavelength range.

Kana chiedza chechiitiko chikapfuura nepasefa rakamanikana, chiedza chikuru chinozoratidzwa kana kunyudzwa, uye chiedza chiri munzvimbo yakatarwa yewavelength ndicho chinotumirwa. Izvi zvinodaro nekuti muchikamu chidiki chefirimu, chimiro che stacking chesefa, chiedza chewavelength chaiyo chichaburitsa musiyano wechikamu, uye chiitiko chekupindira chichaita kuti chiedza chewavelength chaiyo chiwedzere, nepo chiedza chemamwe mawavelength chichabviswa chikamu uye chicharatidzwa kana kunyudzwa.