Lisefe tsa optical ke li-filters tsa optical tse atisang ho sebelisoa, e leng lisebelisoa tse khethang ho fetisa khanya ea wavelengths e fapaneng, hangata likhalase tse sephara kapa lisebelisoa tsa polasetiki tse tseleng ea optical, tse dailoeng kapa tse nang le litšitiso.Ho ea ka litšoaneleho tsa spectral, e arotsoe ka filthara ea "pass-band" le "filter-off";tlhahlobong ea spectral, e arotsoe ka filthara ea ho monya le filthara ea tšitiso.
1. Filter ea thibelo e entsoe ka ho kopanya lidae tse khethehileng ka resin kapa lisebelisoa tsa khalase.Ho ea ka bokhoni ba ho monya leseli la maqhubu a fapaneng a fapaneng, e ka bapala phello ea ho sefa.Lifilimi tsa khalase tse mebala li tumme haholo 'marakeng,' me melemo ea tsona ke botsitso, ho ts'oana, boleng bo botle ba mabone, le litšenyehelo tse tlase tsa tlhahiso, empa li na le bokhopo ba "passband" e batlang e le kholo, hangata e ka tlase ho 30nm.ea.
2. Li-filters tsa ho kena-kenana le Bandpass
E amohela mokhoa oa ho roala ka vacuum, 'me e koahela lera la filimi ea optical e nang le botenya bo itseng holim'a khalase.Hangata, sengoathoana sa khalase se etsoa ka ho phahamisa lihlopha tse ngata tsa lifilimi, 'me molao-motheo oa tšitiso o sebelisoa ho lumella maqhubu a khanya sebakeng se itseng sa spectral ho feta.Ho na le mefuta e mengata ea li-filters tsa litšitiso, 'me likarolo tsa tsona tsa kopo le tsona li fapane.Har'a tsona, li-filters tse sebelisoang haholo ke li-bandpass, li-cutoff filters le li-dichroic filters.
(1) Li-Filters tsa Bandpass li ka fetisa leseli la leqhubu le itseng feela kapa lesela le moqotetsane, 'me leseli le kantle ho paseband le ke ke la feta.Lipontšo tse ka sehloohong tsa optical filter ea bandpass ke: center wavelength (CWL) le halofo ea bandwidth (FWHM).Ho ea ka boholo ba bandwidth, e arotsoe ka: filthara ea narrowband e nang le bandwidth<30nm;filthara ea Broadband e nang le bandwidth>60nm.
(2) Sefate se khaotsoeng se ka arola sekhahla ka libaka tse peli, leseli sebakeng se le seng se ke ke sa feta sebakeng sena se bitsoa sebaka se khaotsoeng, 'me leseli le sebakeng se seng le ka feta ka botlalo le bitsoa sebaka sa passband; Lisefe tse tloaelehileng tse khaotsoeng ke lisefe tsa ho feta nako e telele le li-short-pass.Leqhubu le lelelele la leqhubu la lebone la laser: Ho bolela hore sebakeng se itseng sa maqhubu a maqhubu, ho fetisoa tsela ea maqhubu a malelele, 'me tsela ea maqhubu a makhuts'oane e khaotsoe, e bapalang karolo ea ho arola maqhubu a khuts'oane.Filter e khuts'oane ea wave pass: Sesefa se khuts'oane sa wave wave se bua ka sebaka se itseng sa maqhubu a maqhubu, tsela e khuts'oane ea wave e fetisoa, 'me tsela ea maqhubu a malelele e khaotsoe, e bapalang karolo ea ho arola leqhubu le lelelele.
3. Sefahla sa Dichroic
Sefahla sa Dichroic se sebelisa molao-motheo oa tšitiso.Mekhahlelo ea tsona e etsa letoto le tsoelang pele la likheo tse khantšang tse lumellanang le bolelele bo lakatsehang.Ha litlhōrō le likotlolo li kopana, maqhubu a mang a maqhubu a tlosoa kapa a bonahala ka mokhoa o senyang.Li-filters tsa Dichroic (tse tsejoang hape e le "reflective" kapa "filimi e tšesaane" kapa "li-interference" filters) li ka etsoa ka ho roala substrate ea khalase ka letoto la liphahlo tsa optical.Li-filters tsa Dichroic hangata li bonahatsa likarolo tse sa batleheng tsa leseli ebe li fetisetsa tse ling kaofela.
Mefuta ea mebala ea li-filters tsa dichroic e ka laoloa ke botenya le tatellano ea liphahlo.Ka kakaretso li theko e boima haholo ebile li bobebe ho feta lihloela tsa ho monya.Li ka sebelisoa lisebelisoa tse kang dichroic prism ka har'a lik'hamera ho arola maballo a khanya ka likarolo tsa mebala e fapaneng.
Nako ea poso: Sep-29-2022