Ama-lens ahlukahlukene aluhlobo lwelensi esetshenziswa kaningi kukhamera wethelevishini (CCTV) avaliwe (CCTV). Ngokungafani namalensi wobude obugxile obuhleliwe, abanobude obugxile obunqunyelwe abangenakulungiswa, amalensi ahlukahlukene anikela ngobude obugxile ekugxilwe kulo lonke uhla olubekiwe.
Ithuba eliyinhloko le-varifocal lens ukuguquguquka kwazo ngokuya ngokulungisa inkambu yekhamera yokubuka (i-FOV) neleveli yokusondeza. Ngokushintsha ubude obugxile, ama-lens akuvumela ukuthi uhluka kabusha kokubuka nokusondeza ngaphakathi noma ngaphandle njengoba kudingeka.
Lesi sici siwusizo ikakhulukazi kwizicelo zokubhekwa lapho ikhamera zingadinga khona ukuqapha izindawo ezihlukile noma izinto ezimabanga ahlukahlukene.
Amalensi ahlukahlukenezivame ukuchazwa kusetshenziswa izinombolo ezimbili, njenge-2.8-12mm noma ngo-5-50mm. Inombolo yokuqala imele ubude obumfushane kakhulu belensi, ukuhlinzeka ngensimu ebanzi yokubuka, ngenkathi inombolo yesibili imelela ubude obukhulu kunazo zonke, okwenza inkambu emincane kakhulu yokugxila, inika amandla inkambu emincane yokubuka nge-zoom ethe xaxa.
Ngokushintsha ubude obugxile ngaphakathi kulolu banga, ungenza ngokwezifiso umbono wekhamera ukuze uvumelane nezidingo ezithile zokubhekwa.
Ubude obugxile belensi ye-varifocal
Kuhle ukuqaphela ukuthi ukuguqula ubude obugxile ku-lens ye-varifocal kudinga ukungenelela okunencwajana, kungaba ngokuguqula indandatho emzimbeni nge-lens noma ngokusebenzisa indlela esetshenzisiwe elawulwa ukude. Lokhu kuvumela ukulungiswa kwesayithi ukuze kuvumelane nezidingo zokuguqula ukubhekwa.
Umehluko omkhulu phakathi kwamalensi ahlukahlukene kanye namalensi ahleliwe kumakhamera e-CCTV alele emandleni abo okulungisa ubude obugxile kanye nomkhakha wokubuka.
Ubude obugxile:
Amalensi ahleliwe anobude obuthile obugxile, abangaguquki. Lokhu kusho ukuthi uma usufakiwe, inkampani yekhamera yokubuka kanye nezinga lokusondeza kuqhubeke njalo. Ngakolunye uhlangothi, amalensi e-varifocal anikela ngobubanzi obunhlobonhlobo bokugxila okuguqukayo, okuvumela ukuguquguquka ekushintsheni inkambu yekhamera yokubuka nokusondeza izinga njengoba kudingeka.
Inkambu yokubuka:
Ngelensi ehleliwe, inkambu yokubukwa inqunyelwe kusengaphambili futhi ayikwazi ukuguqulwa ngaphandle kokubuyisela ilensi ngokomzimba.Amalensi ahlukahlukene, ngakolunye uhlangothi, zinikeza ukuguquguquka ukuze kulungiswe ngesandla ilensi ukuze kufinyelelwe inkambu ebanzi noma emincane yokubuka, ngokuya ngezidingo zokubhekwa.
Ukusondeza izinga:
Amalensi ahleliwe awanaso isici sokusondeza, njengoba ubude babo obugxile buhlala buhlala bukhona. Amalensi ahlukahlukene, noma kunjalo, avumela ukusondeza ngaphakathi noma ukuphuma ngokulungisa ubude obugxile ngaphakathi ebangeni elicacisiwe. Lesi sici siwusizo lapho udinga ukugxila emininingwaneni ethile noma izinto kumabanga ahlukene.
Ukuzikhethela phakathi kwamalensi ahlukahlukene kanye namalensi ahleliwe kuya ngezidingo ezithile zokubhekwa zohlelo lokusebenza. Ama-lens ahleliwe afanelekile lapho insimu yokubuka nokusondeza yanele, futhi akukho sidingo sokushintsha umbono wekhamera.
Amalensi ahlukahlukeneziguquguqukayo ngokwengeziwe futhi zinenzuzo lapho ukuguquguquka emkhakheni wokubuka nokusondeza kufiswa, ukuvumela ukuzivumelanisa nezimo zokubhekwa ezahlukahlukene.
Isikhathi sePosi: Aug-09-2023
