Iilensi zeMWIR

Ilensi ye-infrared ephakathi kwamazaes (Ilensi ye-MWIRes) zizinto ezibalulekileyo ezisetyenziswa kwiintlobo ngeentlobo zezicelo ezifuna imifanekiso yobushushu, njengokujonga, ukufumana ithagethi, kunye nohlalutyo lobushushu. Ezi lensi zisebenza kummandla we-infrared ophakathi kwe-spectrum ye-electromagnetic, ngokuqhelekileyo phakathi kwe-3 kunye ne-5 microns (Ilensi ye-3-5um), kwaye zenzelwe ukujolisa imitha ye-infrared kwi-detector array.
Iilensi zeMWIR zenziwe ngezinto ezinokudlulisa nokugxila kwimitha ye-IR ngaphakathi kummandla weMWIR. Izinto ezisetyenziswa kakhulu kwiilensi zeMWIR ziquka i-germanium, i-silicon, kunye neeglasi ze-chalcogenide. I-Germanium yeyona nto isetyenziswa kakhulu kwiilensi zeMWIR ngenxa ye-refractive index yayo ephezulu kunye neempawu ezilungileyo zokudlulisela kuluhlu lwe-MWIR.
Ilensi ye-MWIR iza ngeendlela ezahlukeneyo zoyilo kunye noqwalaselo, kuxhomekeke kwisicelo esicetywayo. Enye yezona ndlela ziqhelekileyo yilensi elula yeplano-convex, enomphezulu omnye othe tyaba kunye nomphezulu omnye othe tyaba. Le lensi kulula ukuyenza kwaye isetyenziswa kwiindawo ezininzi apho kufuneka inkqubo yomfanekiso esisiseko. Ezinye iindlela zoyilo ziquka iilensi ezimbini, eziqulathe iilensi ezimbini ezinee-refractive indices ezahlukeneyo, kunye neelensi ze-zoom, ezinokulungelelanisa ubude be-focal ukuze zisondeze okanye zikhuphe into.
Iilensi zeMWIR zizinto ezibalulekileyo kwiinkqubo ezininzi zokuthatha imifanekiso ezisetyenziswa kumashishini ahlukeneyo. Emkhosini, iilensi zeMWIR zisetyenziswa kwiinkqubo zokujonga, iinkqubo zokhokelo lwee-missile, kunye neenkqubo zokufumana iithagethi. Kwiimeko zoshishino, iilensi zeMWIR zisetyenziswa kuhlalutyo lobushushu kunye neenkqubo zolawulo lomgangatho. Kwiinkqubo zonyango, iilensi zeMWIR zisetyenziswa kumfanekiso wobushushu ukuze kufunyanwe uxilongo olungenabungozi.
Enye into ebalulekileyo ekufuneka iqwalaselwe xa ukhetha ilensi ye-MWIR bubude bayo obuphambili. Ubude obuphambili belensi bumisela umgama phakathi kwelensi kunye noluhlu lwesixhobo sokufumanisa, kunye nobukhulu bomfanekiso oveliswayo. Umzekelo, ilensi enobude obufutshane belensi iya kuvelisa umfanekiso omkhulu, kodwa umfanekiso awuyi kuba nankcukacha ingako. Ilensi enobude obuphezulu belensi iya kuvelisa umfanekiso omncinci, kodwa umfanekiso uya kuba nenkcukacha engaphezulu, njengeIlensi ye-MWIR engama-50mm.

Enye into ebalulekileyo ekufuneka iqwalaselwe sisantya selensi, esimiselwa yinombolo yayo ye-f. Inombolo ye-f yireyithingi yobude be-focal ukuya kububanzi belensi. Ilensi enenombolo ye-f ephantsi iya kukhawuleza, oko kuthetha ukuba inokubamba ukukhanya okungakumbi ngexesha elifutshane, kwaye idla ngokukhethwa kwiimeko zokukhanya okuphantsi.
Ukuqukumbela, iilensi zeMWIR ziyinxalenye ebalulekileyo kwiinkqubo ezininzi zokujonga imifanekiso ezisetyenziswa kumashishini ahlukeneyo. Zenzelwe ukujolisa imitha ye-infrared kwi-detector array kwaye ziza ngeendlela ezahlukeneyo kunye noyilo, kuxhomekeke kwisicelo esicetywayo.