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Lub lens twg zoo tshaj plaws qhia txog seb tib neeg pom lawv tus kheej li cas?
Hauv lub neej txhua hnub, cov tib neeg feem ntau vam khom kev thaij duab los sau lawv lub cev zoo li cas. Txawm yog rau kev sib qhia hauv social media, lub hom phiaj ntawm kev txheeb xyuas tus kheej, lossis kev tswj cov duab tus kheej, qhov tseeb ntawm cov duab no tau dhau los ua ib qho kev tshuaj xyuas ntxiv....Nyeem ntxiv -
Lub lens dub - muab kev ua tau zoo dua thaum hmo ntuj rau kev saib xyuas kev ruaj ntseg
Lub thev naus laus zis lens dub sawv cev rau kev daws teeb meem siab heev hauv kev saib xyuas kev ruaj ntseg, muaj peev xwm ua tiav cov duab xim puv ntoob hauv qab qhov kaj tsawg heev (piv txwv li, 0.0005 Lux), qhia txog kev ua tau zoo dua thaum hmo ntuj. Lub cim tseem ceeb ...Nyeem ntxiv -
Qhov sib txawv ntawm cov koob yees duab dome ceev ceev thiab cov koob yees duab ib txwm muaj
Muaj qhov sib txawv tseem ceeb ntawm cov koob yees duab dome ceev ceev thiab cov koob yees duab ib txwm muaj hais txog kev sib koom ua ke, kev tsim qauv, thiab cov xwm txheej siv. Daim ntawv no muab kev sib piv thiab kev tshuaj xyuas los ntawm peb qhov tseem ceeb: cov ntsiab lus tseem ceeb...Nyeem ntxiv -
Kev siv dav dav ntawm cov thev naus laus zis tshuaj xyuas kev pom ntawm lub tshuab
Kev siv tshuab los tshuaj xyuas qhov muag pom kev tau siv dav hauv ntau yam lag luam, qhia txog qhov zoo ntawm kev tsim khoom lag luam, kev kho mob, thiab kev tsim khoom tsheb. Ua ib qho thev naus laus zis sib xyaw ua ke uas suav nrog kev ua cov duab, kev xaiv...Nyeem ntxiv -
Lub interface hom thiab rov qab focal ntev ntawm optical lenses
Lub hom interface thiab qhov ntev focal tom qab (piv txwv li, flange focal distance) ntawm lub lens optical yog cov yam ntxwv tseem ceeb uas tswj hwm qhov sib xws ntawm lub kaw lus thiab txiav txim siab qhov ua tau zoo ntawm kev teeb tsa duab. Daim ntawv no nthuav qhia kev faib tawm ntawm cov qauv uas muaj ntau ...Nyeem ntxiv -
Phau Ntawv Qhia Txog Kev Tshuaj Xyuas Kab MTF
Daim duab kos MTF (Modulation Transfer Function) ua haujlwm ua ib qho cuab yeej tseem ceeb rau kev ntsuam xyuas kev ua haujlwm ntawm cov lens. Los ntawm kev ntsuas lub peev xwm ntawm lub lens los khaws qhov sib piv ntawm ntau qhov zaus sib txawv, nws pom tseeb qhia txog cov yam ntxwv tseem ceeb ntawm kev thaij duab xws li rov ua dua ...Nyeem ntxiv -
Daim ntawv thov ntawm cov lim dej hla ntau yam spectral bands hauv kev lag luam optical
Kev Siv Cov Lim Dej Kev siv cov lim dej hla ntau yam spectral bands hauv kev lag luam kho qhov muag feem ntau siv lawv cov peev xwm xaiv wavelength, ua kom muaj kev ua haujlwm tshwj xeeb los ntawm kev hloov kho wavelength, qhov muaj zog, thiab lwm yam khoom siv kho qhov muag. Cov hauv qab no piav qhia txog th...Nyeem ntxiv -
Cov khoom siv twg zoo dua rau kev siv ua lub plhaub Lens: yas lossis hlau?
Kev tsim qauv ntawm cov iav tsom iav ua lub luag haujlwm tseem ceeb hauv cov khoom siv kho qhov muag niaj hnub no, nrog rau yas thiab hlau yog ob qho kev xaiv khoom siv tseem ceeb. Qhov sib txawv ntawm ob hom no pom tseeb thoob plaws ntau qhov ntev, suav nrog cov khoom siv, kev ruaj khov, qhov hnyav ...Nyeem ntxiv -
Qhov ntev ntawm lub lens thiab qhov pom ntawm lub lens
Qhov ntev ntawm lub teeb yog ib qho tseem ceeb uas ntsuas qhov sib sau ua ke lossis sib txawv ntawm cov teeb pom kev hauv cov tshuab kho qhov muag. Qhov kev ntsuas no ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab seb daim duab tsim li cas thiab qhov zoo ntawm daim duab ntawd. Thaum cov teeb pom kev sib luag dhau los ntawm ib qho...Nyeem ntxiv -
Daim ntawv thov ntawm SWIR hauv kev tshuaj xyuas kev lag luam
Lub teeb Infrared luv luv (SWIR) yog lub lens kho qhov muag uas tsim tshwj xeeb los ntes lub teeb infrared luv luv uas tib neeg lub qhov muag tsis pom. Cov kab no feem ntau yog lub teeb nrog cov wavelengths ntawm 0.9 txog 1.7 microns. T...Nyeem ntxiv -
Kev siv lub lens tsheb
Hauv lub koob yees duab hauv tsheb, lub lens ua lub luag haujlwm ntawm kev tsom lub teeb, tso tawm cov khoom hauv thaj chaw pom ntawm qhov chaw ntawm cov duab nruab nrab, yog li tsim cov duab kho qhov muag. Feem ntau, 70% ntawm cov kev teeb tsa kho qhov muag ntawm lub koob yees duab tau txiav txim siab ...Nyeem ntxiv -
Xyoo 2024 Kev Ruaj Ntseg Expo hauv Beijing
Tuam Tshoj Thoob Ntiaj Teb Kev Ruaj Ntseg Khoom Siv Expo (tom qab no hu ua "Security Expo", Lus Askiv "Security China"), tau pom zoo los ntawm Ministry of Commerce ntawm People's Republic of China thiab txhawb nqa thiab tuav los ntawm Tuam Tshoj Security Products Industry Association...Nyeem ntxiv
