Ntawv
- Taw qhia: Qhov rai mus rau hauv qhov tsaus ntuj
- Fom yog dab tsi? Cov hauv paus
- Vim li cas fom teeb meem
- Fom {2000+ vs. 2500+
- Txwv ntawm Fom: Dab tsi nws nco
- Lub neej yav tom ntej ntawm Fom
Taw qhia: Qhov rai mus rau hauv qhov tsaus ntuj
Daim duab sau rau hmo pom kev tsaus ntuj goggles thiab pom lub ntiaj teb ntxoov ntxoo taws teeb hauv ntsuab. Qhov ntawd yog kev ua haujlwm ntawm cov duab ua kom sib haum ntawm lub raj (iit), lub plawv ntawm cov hmo ntuj lub zeem muag. Tab sis yuav ua li cas koj thiaj paub yog tias cov goggles yog sab saum toj-tier lossis tsuas yog tsim nyog? Uas yog qhov twgDaim duab ntawm kev tsim txiaj (FOM)Cov kauj ruam hauv-ib tus lej uas suav nrog Iit qhov zoo. Kuv twb tau hooked ntawm no metic thaum kuv tau pib tshawb nrhiav lub zeem muag hmo ntuj, thiab nws yog ntau tshaj ib tus lej-nws yog qhov tseem ceeb rau koj pom muaj. Hauv cov ntawv sau no, Kuv yuav unpack dab tsi fom yog, vim li cas nws tseem ceeb hauv i}} Kuv yog dab tsi} Cia peb ntsaub mus rau hauv lub ci ci.
Fom yog dab tsi? Cov hauv paus
Fom, lossis daim duab ntawm kev tsim txiaj,Tus nqi ib qho Iit muaj peev xwm tig mus rau hauv cov duab ntshiab. Nws tau xam nrog cov mis yooj yim:
Fom=daws teeb meem (LP / MM) × teeb liab-rau-suab nrov piv (SNR)
- Teeb meem: Ntsuas hauv kab ua ke ib millimeter (LP / hli), qhov kev sib tw no-muaj pes tsawg tus dub-and-dawb kab sib zog koj tuaj yeem paub qhov txawv ua ntej lawv plooj. Gen 1 yuav ntaus 25-35 lp / hli, gen 2 mus txog {to {}}}} {8}}}, ib lub optics kev lag luam video.
(LINE khub ib millimeter (LP / hli)=1 / kab khub dav dav)
- Tus SNR: Qhov no yog qhov sib piv ntawm cov ntsiab lus duab kos duab rau keeb kwm yav dhau los-siab dua txhais tau tias tsis muaj qoob loo tsawg. GEN 1 yuav nyob ib puag ncig 10, thaum Gen 3 tuaj yeem ntaus 20-30+.
Piv txwv li, lub raj nrog 64 lp / hli thiab ib qho SNR ntawm 25000-ua haujlwm cov leeg ntawm 1000, nrog sab saum toj-kawg GAN 3 {7}}. Uas koj pom? Nws yog los ntawm cov tshuaj phosphor no, cov ncauj lus qhia txog cov vis dis aus rau peb lub qhov muag rhiab, thiab fom ntsuas ntsuas cov duab zoo li cas.
Vim li cas fom teeb meem
Fom teeb meem vim tias pom lub zeem muag hmo ntuj tsis yog saib - nws yog hais txog pom meej. Kuv cia siab rau qhov chaw teeb pom kev zoo li muaj hnub qub los yog cov menyuam yaus, thiab FOM qhia koj seb lawv coj li cas. Ib qho qis-fom tube (hais, 350) tej zaum yuav muab plooj plooj, ib zaug ntawm 1600 muab cov lus qhia meej, thaum muaj ib qho ntawm 1600 muab cov lus qhia meej crisp txog rau {5}} meters. Nws yog cov tub rog xav tau xav tau nws los nthuav hem, cov neeg yos hav zoov taug kev ua si. Cov neeg yuav khoom siv FOM los tiv thaiv cov nqi, los ntawm ob peb puas Euro rau Gen 1, raws li cov ntawv sau video. Nws yog qhov kev kuaj xyuas nrawm nrawm, txawm hais tias nws skips extras li rhiab lossis raj tawv.
Fom {1800+ / 2000+ Kuv 2500+:
Hauv xyoo tsis ntev los no tawm ntawm kev ua haujlwm siab tshiab IUs Gen 2+}} lossis Gen3 nrog Elite Fom> 2500, uas tseem ceeb tshaj yav dhau los hauv kev ntsuas {3}}; Ntawm no yog kev lom zem ntu:dab tsi yog qhov sib txawv ntawm ib fom ntawm 2000+} thiab 2500+ tawm hauv daim teb? Hais tias koj tau txais gen 3 lub raj ntawm 2000 (tej zaum (tej zaum (tej zaum 64 lp / hli × 31,25 SNR) piv ib ntawm 2500 (72 lp / hli × 34.72 SNR). Qhov kev sib tw uas muaj lub suab nrov loj, tab sis nws puas ua kom pom thaum koj peering los ntawm kev tsaus ntuj?
Hauv kuv lub tswv yim, nws hinges ntawm qhov xwm txheej. Thaum 2 {{0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 elite txaus kom qhia ib daim duab ntawm 400 metres lub teeb pom kev zoo, muaj suab yau. Dhia mus rau 2500, thiab koj yuav xaiv cov lus qhia zoo nkauj-zoo li lub kaus mom, lossis pom cov duab huv si nyob ze-blackout (xav 0.001 Lux). Qhov siab SNR txiav speckes, thiab cov kev daws teeb meem ntxiv tau ua kom pom cov npoo, tswj kom pom thiab lees paub me ntsis. Rau ib tug neeg hauv lub luag haujlwm tseem ceeb - zoo li ib qho kev sib tw hmo ntuj, lossis hauv lub teeb sib zog nqus nrog yuav luag ob peb lub teeb tsaus ntuj-uas tuaj yeem txhais tau tias muaj teeb meem maj mam. Tab sis rau cov neeg siv xws li, zoo li hmo ntuj-lub sij hawm hiker, 2000 fom (los yog txawm {13} fom) feem ntau txaus; Qhov sib txawv yuav hnov tsis meej tshwj tsis yog koj muab piv sab-ib sab.
Tom qab ntawd muaj nqi. 1800+}} 2000+}}}} {}}}}}}}}}}}}}} fom nce ntxiv. Hauv kev sib xyaw lub teeb (hais, lub nroog ntug), koj yuav tsis pom ntau yam. Hauv kev sib sib zog nqus tsaus, {2500+} rub tawm tom ntej, tab sis tsis txaus los muab nyiaj ob npaug tshwj tsis yog tias txhua yam ntawm txoj sia-tuag. SNR feem ntau trumps daws teeb meem rau pom zoo, yog li lub siab-SNR 2000 yuav ntau, {} hits cov qab zib-ploj rov qab rov qab ncaws mus rau qhov ntawd.
Txwv ntawm Fom: Dab tsi nws nco
Fom's key tab sis tsis zoo tag nrho. Nws dhiaPhotocatode rhiab-Qhov zoo lub raj nqa lub teeb-uas yog qhov tseem ceeb nyob ze-tsaus ntuj (gen 3} {} μa μA / LM, ib daim yeeb yaj kiab). LIFPANPAN, POJ-MASE-lub teeb tiv taus, thiab teb ntawm qhov pom kuj tseem ceeb, tab sis fom tsis quav ntsej lawv. Ib qho 2000 fom raj yuav outlast ib tug 2500 fom ib lossis coj ntsia zoo dua. Ntxiv rau, Fom tsuas yog rau kuv qhov nws tsis mus kov digital lossis thermal hmo pom kev, nqaim nws ncav cuag ntau yam ua thev naus laus zis.
Lub neej yav tom ntej ntawm Fom
Nrhiav rau pem hauv ntej, FOM muaj peev xwm nce toj. Gen 3 Leeg Hit 2000+ Tam sim no, tab sis zoo dua Microchandes tuaj yeem thawb Resolution yav dhau los 72 LP thiab dhau ntawm 2500-3000. Dawb phosphor cov ntxig-tsawg dua ntsuab, ntau tshaj plaws ntuj ceeb tsheej kev txiav txim siab txiav txim, tab sis cov qauv tuav. Tus nqi yog tus nqi hluav taws kub-siab-fom hlab yog cov kwv yees, tab sis scaled ntau lawm tuaj yeem poob qhov ntawd. Fom yuav ua rau kev coj noj ua haus zoo thaum tsaus ntuj pom kev hloov pauv, ntsuas qhov ntsuas thiab tus nqi.