1.Chii chinonzi nhete bhendi sefa?

Sefamidziyo yemaziso inoshandiswa kusarudza yaunoda bhendi remwaranzi.Narrow band mafirita imhando ye bandpass sefa inobvumira mwenje mune yakati wavelength renji kuti ifambiswe nekupenya kwepamusoro, ukuwo mwenje mune mamwe mafungu ewavelength inotorwa kana kuratidzwa, nekudaro inowana mhedzisiro yekusefa.

Iyo passband yakamanikana bhendi mafirita yakatetepa, kazhinji isingasviki 5% yepakati kukosha kwewavelength, uye inogona kushandiswa zvakanyanya munzvimbo dzakasiyana siyana, senge nyeredzi, biomedicine, kutarisa kwezvakatipoteredza, kutaurirana, nezvimwe.

2.Basa rakamanikana bhendi filters

Basa reiyo nhete bhendi sefa ndere kupa wavelength kusarudzwa kweiyo optical system, kunyanya mune zvinotevera zvinhu:

(1)Kusarudza kusefa kwechiedza

Narrow bandfiltersinogona kusarudza kusarudza kunze kwechiedza mune mamwe mafungu ewavelength uye kuchengetedza mwenje mune chaiyo wavelength siyana.Izvi zvakakosha kumashandisirwo anoda kusiyanisa pakati pezviedza zvemasaisai akasiyana-siyana kana kuti zvinoda malights emamwe mawavelength ezviedzo kana maonero.

(2)Deredza ruzha rwechiedza

Narrow band mafirita anogona kuvhara mwenje mumasaisai asina kufanira, kuderedza mwenje unobva kune mwenje kana kukanganiswa kwechiedza chekumashure, uye kunatsiridza kusiyana kwemufananidzo uye kujeka.

Bandi rakamanikana rinosefa

(3)Spectral analysis

Narrow band mafirita anogona kushandiswa kuongorora spectral.Iko kusanganiswa kweakawanda akatetepa bhendi mafirita anogona kushandiswa kusarudza mwenje weakananga wavelengths uye kuita chaiyo spectral ongororo.

(4)Chiedza chakasimba chekudzora

Narrow band mafirita anogona zvakare kushandiswa kugadzirisa kusimba kwechiedza chemwenje sosi, kudzora kusimba kwechiedza nekusarudza kufambisa kana kuvharira mwenje wemasaisai chaiwo.

3.Nheyo yenarrow band sefa

Narrow bandfiltersshandisa chiitiko chekuvhiringidza kwechiedza kufambisa kana kuratidza chiedza mune imwe wavelength yakasiyana.Nheyo yaro inobva pakuvhiringidza uye kutora maitiro echiedza.

Nekugadzirisa mutsauko wechikamu mune yakaturikidzana yeakatetepa firimu akaturikidzana, mwenje chete mune inotarirwa wavelength renji inofambiswa zvakasarudzika, uye chiedza chemamwe wavelengths chinovharika kana kuratidzwa.

Kunyanya, yakamanikana bhendi mafirita anowanzo kurongedzerwa neakawanda akaturikidzana emafirimu, uye iyo refractive index uye ukobvu hwega ega bhaisikopo inogadziridzwa zvinoenderana nezvinodiwa zvekugadzira.

Nekudzora ukobvu uye refractive index pakati peakatetepa firimu akaturikidzana, mutsauko wechikamu chechiedza unogona kugadziridzwa kuti uwane kukanganisa kunokanganisa mune yakatarwa wavelength renji.

Kana chiedza chechiitiko chikapfuura nepasefa yakamanikana bhendi, mwenje wakawanda unozoratidzwa kana kutorwa, uye chiedza chete chiri muchikamu chewavelength ndicho chichafambiswa.Izvi zvinodaro nekuti mune yakaonda firimu layer stacking chimiro chesefa, chiedza cheimwe wavelength chaiyo chichabudisa mutsauko wechikamu, uye chiitiko chekuvhiringidza chichaita kuti chiedza cheimwe wavelength chaiyo chiwedzere, asi chiedza chemamwe mafungu achaita kubviswa kwechikamu uye kuratidzwa kana kubatwa.