Iilensi zeVarifocal luhlobo lwelensi edla ngokusetyenziswa kwiikhamera zikamabonakude ovaliweyo (CCTV). Ngokungafaniyo neelensi ezigxininisiweyo zobude obumiselweyo, ezinobude obumiselwe kwangaphambili obungenakulungiswa, iilensi ze-varifocal zibonelela ngobude bojoliso obuhlengahlengiswayo ngaphakathi koluhlu oluchaziweyo.
Inzuzo ephambili yeelensi ze-varifocal kukuguquguquka kwazo malunga nokulungelelanisa indawo yekhamera yekhamera (FOV) kunye nenqanaba lokusondeza. Ngokutshintsha ubude bojoliso, ilensi ikuvumela ukuba utshintshe i-angle yokujonga kwaye usondeze ngaphakathi okanye ngaphandle njengoko kufuneka.
Olu phawu luluncedo ngakumbi kwizicelo zokucupha apho ikhamera inokufuna ukujonga iindawo ezahlukeneyo okanye izinto ezikwimigama eyahluka-hlukeneyo.
Iilensi ezahlukeneyozidla ngokuchazwa kusetyenziswa amanani amabini, njenge 2.8-12mm okanye 5-50mm. Inani lokuqala limele obona bude bokujongisisa bufutshane belensi, ibonelela umhlaba obanzi wokujongwa, ngelixa inani lesibini limele obona bude bokujongisisa bude, ivumela ibala elimxinwa lokujonga ngokwandisa ngakumbi.
Ngokulungelelanisa ubude bojoliso phakathi kolu luhlu, unokwenza imbonakalo yekhamera ilungele iimfuno ezithile zokucupha.
Ubude obugxilwe kwilensi ye-varifocal
Kubalulekile ukuqaphela ukuba ukulungelelanisa ubude bogxininiso kwilensi ye-varifocal kufuna ungenelelo olwenziwa ngesandla, mhlawumbi ngokujika iringi kwilensi okanye ngokusebenzisa indlela enemoto elawulwa kude. Oku kuvumela uhlengahlengiso kwisiza ukuhambelana neemfuno eziguqukayo zokucupha.
Umahluko omkhulu phakathi kwe-varifocal kunye ne-fixed lens kwiikhamera ze-CCTV zilele ekukwazini ukulungelelanisa ubude obugxilwe kunye nentsimi yokujonga.
Ubude bokuJonga:
Iilensi ezizinzileyo zinobude obugxininise obuthile, obungenakuguqulwa. Oku kuthetha ukuba xa ifakiwe, indawo yekhamera yokujonga kunye nenqanaba lokusondeza lihlala lingatshintshi. Ngakolunye uhlangothi, iilensi ze-varifocal zibonelela ngoluhlu lobude obulungelelaniswayo, okuvumela ukuguquguquka ekutshintsheni indawo yokujonga yekhamera kunye nenqanaba lokusondeza njengoko kufuneka.
Indawo yokuJonga:
Ngelensi emiselweyo, indawo yokujonga imiselwe kwangaphambili kwaye ayinakuguqulwa ngaphandle kokutshintsha ngokwasemzimbeni.Iilensi ezahlukeneyo, ngakolunye uhlangothi, unikeze ukuguquguquka ukulungelelanisa ngesandla i-lens ukufezekisa indawo ebanzi okanye encinci yokujonga, kuxhomekeke kwiimfuno zokubeka iliso.
Inqanaba lokwandisa:
Iilensi ezilungisiweyo azinalo uphawu lokusondeza, njengoko ubude bazo obugxininise buhlala buhleli. Iilensi zeVarifocal, nangona kunjalo, zivumela ukusondeza ngaphakathi okanye ngaphandle ngokuhlengahlengisa ubude bengqwalasela phakathi koluhlu oluxeliweyo. Olu phawu luluncedo xa ufuna ukugxila kwiinkcukacha ezithile okanye izinto kwimigama eyahlukeneyo.
Ukhetho phakathi kwe-varifocal kunye ne-fixed lens kuxhomekeke kwiimfuno ezithile zokucupha isicelo. Iilensi ezilungisiweyo zifanelekile xa indawo yokujonga rhoqo kunye nenqanaba lokusondeza lanele, kwaye akukho mfuneko yokulungelelanisa imbono yekhamera.
Iilensi ezahlukeneyoziguquguquka ngakumbi kwaye ziluncedo xa ubhetyebhetye kwindawo yokujonga kunye ne-zoom ifunwa, ivumela ukuziqhelanisa neemeko ezahlukeneyo zokucupha.
Ixesha lokuposa: Aug-09-2023
