Amalensi e-Varifocal awuhlobo lwamalensi ajwayele ukusetshenziswa kumakhamera kamabonakude wesifunda esivaliwe (CCTV). Ngokungafani namalensi obude obugxilile obugxilile, anobude bokugxila obunqunywe kusengaphambili obungakwazi ukulungiswa, amalensi ahlukahlukene anikezela ngobude bokugxila obulungisekayo ngaphakathi kwebanga elithile.
Inzuzo eyinhloko yamalensi e-varifocal ukuguquguquka kwawo mayelana nokulungisa indawo yokubuka yekhamera (FOV) kanye nezinga lokusondeza. Ngokushintsha ubude bokugxila, ilensi ikuvumela ukuthi uguqule i-engeli yokubuka futhi usondeze ngaphakathi noma ngaphandle njengoba kudingeka.
Lesi sici siwusizo ikakhulukazi ezinhlelweni zokusebenza zokugada lapho ikhamera ingase idinge ukuqapha izindawo noma izinto ezihlukene ebangeni elihlukahlukene.
Ama-lens ahlukahlukenezivame ukuchazwa kusetshenziswa izinombolo ezimbili, ezifana 2.8-12mm noma 5-50mm. Inombolo yokuqala imelela ubude bokugxila obufushane kakhulu belensi, ihlinzeka ngendawo yokubuka ebanzi, kuyilapho inombolo yesibili imelela ubude bendawo ende kakhulu, okuvumela inkambu encane yokubuka ngokusondeza okwengeziwe.
Ngokulungisa ubude bokugxila kulobu bubanzi, ungenza ngendlela oyifisayo umbono wekhamera ukuze uvumelane nezidingo ezithile zokugada.
Ubude bokugxila belensi ye-varifocal
Kuhle ukuqaphela ukuthi ukulungisa ubude bokugxila kulensi ye-varifocal kudinga ukungenelela okwenziwa ngesandla, noma ngokuphendula indandatho ngokoqobo kulens noma ngokusebenzisa indlela enenjini elawulwa ukude. Lokhu kuvumela ukulungiswa kwesayithi ukuze kuhambisane nezidingo ezishintshayo zokugada.
Umehluko omkhulu phakathi kwama-varifocal namalensi angashintshi kumakhamera we-CCTV usekhonweni lawo lokulungisa ubude bokugxila kanye nenkundla yokubuka.
Ubude bokugxila:
Amalensi angashintshi anobude bokugxila obuthile, obungalungiseki. Lokhu kusho ukuthi uma isifakiwe, indawo yokubuka yekhamera kanye nezinga lokusondeza lihlala lingashintshi. Ngakolunye uhlangothi, amalensi e-varifocal anikezela ngebanga lobude bokugxila obulungisekayo, okuvumela ukuguquguquka ekushintsheni indawo yokubuka yekhamera kanye nezinga lokusondeza njengoba kudingeka.
Inkambu yokubuka:
Ngelensi egxilile, inkambu yokubuka inqunywa kusengaphambili futhi ayikwazi ukuguqulwa ngaphandle kokushintsha ilensi ngokomzimba.Ama-lens ahlukahlukene, ngakolunye uhlangothi, hlinzeka ngokuguquguquka kokulungisa ilensi mathupha ukuze kuzuzwe inkambu yokubuka ebanzi noma emincane, kuye ngezidingo zokugada.
Ileveli yokusondeza:
Amalensi angashintshi awanaso isici sokusondeza, njengoba ubude bawo bokugxila buhlala bunjalo. Amalensi ahlukahlukene, nokho, avumela ukuhlehlisa noma ukuhlehlisa ngokulungisa ubude bokugxila ngaphakathi kwebanga elishiwo. Lesi sici siwusizo uma udinga ukugxila emininingwaneni ethile noma ezintweni ezikude.
Ukukhetha phakathi kwama-varifocal namalensi angashintshi kuncike ezidingweni ezithile zokugada zohlelo lokusebenza. Amalensi angashintshi afaneleka uma indawo yokubuka engashintshi kanye nezinga lokusondeza kwanele, futhi asikho isidingo sokulungisa indlela ikhamera ebuka ngayo.
Ama-lens ahlukahlukeneziguquguquka kakhudlwana futhi zinenzuzo uma kudingeka ukuguquguquka emkhakheni wokubuka nokusondeza, okuvumela ukuzivumelanisa nezimo ezihlukahlukene zokugada.
Isikhathi sokuthumela: Aug-09-2023
