Qhov sib txawv thiab cov yam ntxwv ntawm cov cuab yeej pom kev hmo ntuj
Cov cuab yeej pom kev hmo ntuj tau muab faib ua thawj, thib ob thiab thib peb tiam raws li qib ntawm cov raj intensifier.
Lub cim thib peb yog cov cuab yeej cuab tam hmo ntuj pom kev zoo tshaj plaws tam sim no muaj rau pej xeem siv. Nws nto yog coated nrog ib tug heev rhiab heev gallium arsenide photocathode txheej, uas muaj peev xwm hloov lub teeb mus rau hauv hluav taws xob lub zog zoo dua nyob rau hauv lub teeb tsis muaj zog heev. Lub cim thib peb muab cov duab meej, pom kev hmo ntuj. Muaj cov duab ua haujlwm siab ua haujlwm siab nrog qhov tsawg kawg ntawm 51lp / mm, uas yog 3 units siab dua li tus qauv yam tsawg kawg nkaus ntawm 45lp / mm. Kab ib millimeter (lp/mm) yog chav ntsuas uas siv los ntawm cov duab daws teeb meem siab dua los tsim cov duab ntse dua.
Qhov thib ob tiam ntawm disk tsim tuaj yeem tsim ntau txhiab tus electrons. Qhov no ua kom pom cov duab meej nyob rau hmo ntuj, tsis muaj kev cuam tshuam piv rau tiam 1 thiab tiam 0.
Thawj tiam muaj teeb meem nrog distortion thiab luv luv li tube lub neej. Nws siv cov ntaub ntawv uas hloov photoelectrons zoo dua li tiam zero. Cov khoom siv no muaj peev xwm ua haujlwm ntawm lub teeb ci qis dua li Generation Zero, hu ua "starlight brightness." Imported night vision goggles feem ntau siv thawj tiam duab intensifiers, txawm tias lawv tau lees tias yog tiam thib ob.
Raws li rau lub zero tiam, nws tso siab rau lub teeb lub zog los txhim kho lub teeb sab nraud. Lub teeb-hloov hluav taws xob hluav taws xob yog tsom los ntawm cov khoom siv hluav taws xob uas dhau cov khoom siv hluav taws xob los ntawm cov khoom siv lub khob hliav qab (anode) kom nrawm rau lawv, yog li lawv muaj zog ntau dua thaum lawv ntaus lub vijtsam fluorescent, yog li tsim cov duab. Hmoov tsis zoo, kev ceev cov electrons hauv txoj kev no ua rau txo cov duab zoo thiab ua rau lub neej luv luv.
Txhua yam khoom thib peb uas muag rau hauv kev lag luam thoob ntiaj teb xav tau daim ntawv tso cai xa tawm los ntawm US Department of State, uas yog kev tiv thaiv kev lag luam tswj cov khoom, raws li US Federal International Transportation of Arms (ITAR), Tshooj 22. Feem ntau ntawm ob qhov no Cov khoom lag luam raug tswj los ntawm US Department of Commerce raws li tus lej 6A002.
Cov yam ntxwv ua haujlwm
Muaj peb yam tseem ceeb los txiav txim nws qhov kev ua tau zoo. Lawv yog: rhiab heev, teeb liab hloov dua siab tshiab thiab clarity. Raws li tus neeg siv khoom, koj yuav tsum paub peb tus yam ntxwv no los txiav txim siab qib kev ua haujlwm ntawm koj qhov kev pom kev hmo ntuj.
Nws rhiab heev, los yog cov duab teb muaj peev xwm, yog lub peev xwm los ntes lub teeb. Nws feem ntau yog ntsuas hauv "uA / lm", (microampere ib lumen). ATN cov thev naus laus zis thiab cov txheej txheem ua kom peb muab peb cov neeg siv khoom nrog cov khoom lag luam zoo tshaj plaws. Tias yog vim li cas ntau ntawm peb cov khoom tsis suav nrog cov qauv infrared illuminators. Hauv ntau daim ntawv thov, teeb pom kev zoo tsis tsim nyog. Peb cov neeg sib tw muab lawv cov khoom nyob rau hauv lub teeb pom kev zoo infrared kom ua tiav qhov kev ua tau zoo hauv cov teeb pom kev tsawg.
Kev hloov pauv teeb liab ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm tsis pom kev hmo ntuj. ATN's access board thev naus laus zis muab lub peev xwm hloov pauv muaj zog rau kev tawm tswv yim thiab tso tawm cov cim. Ib yam li cov cuab yeej tso suab siab siab muab lub suab zoo rau koj, ATN hmo ntuj pom kev muab cov duab zoo rau koj yam tsis muaj "cov suab nrov tawm."
Qhov thib peb qhov tseem ceeb hauv koj qhov kev txiav txim siab yuav khoom hmo ntuj tsom iav tsom iav yog qhov muaj peev xwm pom kev nthuav dav hauv cov duab koj pom. ATN cov cuab yeej pom kev hmo ntuj muaj cov khoom siv kho qhov muag zoo thiab cov khoom siv tes ua tshiab tshaj plaws. Qee qhov ntawm peb cov neeg sib tw suav nrog kev nthuav dav optics rau hauv lawv cov khoom kom ua tiav qhov kev daws teeb meem siab. Tab sis sib raug zoo, thaj tsam ntawm kev pom kev yog txi. ATN muaj qhov kev xaiv ntawm qhov loj loj yog tias koj xav tau. Cov kab ke no tsis tas yuav muaj kev nthuav dav kom ua tau zoo. Peb cov thev naus laus zis muab txoj hauv kev tshwj xeeb los tsim qhov sib txawv siab tshaj plaws ntawm qhov screen, yog li tsim cov khoom zoo tshaj plaws rau cov neeg siv khoom.
