Txhua tus muaj qhov sib txawv & muaj qhov xav tau sib txawv
Thaum koj tab tom nrhiav rau lub koob yees duab koj yuav tsum nkag siab tias peb txhua tus muaj cov kev xav tau sib txawv thiab qhov zoo tshaj plaws rau ib tus neeg tuaj yeem ua tsis ncaj ncees rau lwm tus. Muaj tiag tiag tsis muaj ib qho loj-haum-tag nrho thaum nws los txog rau cov khoom siv kho qhov muag.
Koj yuav tsum xav txog cov yam ntxwv uas muaj nyob rau hauv niaj hnub binoculars thiab xaiv cov khub uas tso saib tag nrho lossis feem ntau ntawm cov yam ntxwv uas koj xav tau.
Binocular nta
Tam sim no cia peb nkag mus rau hauv cov yam ntxwv sib txawv muaj nyob rau hauv ob lub koob yees duab thiab muab cov lus piav qhia luv luv ntawm txhua tus los muab qee qhov kev nkag siab rau koj raws nraim qhov koj tab tom nrhiav;
Hom Binocular: Porro Prism lossis Roof Prism?
Cia peb pib los ntawm kev saib ob lub koob yees duab tseem ceeb, ua ntej xyoo 1960s koj yuav tsis muaj qhov kev xaiv no vim tias tsuas muaj ib hom koob yees duab, tab sis ntxiv rau hauv qab no.
Porro Prism Binoculars
Cov no yog cov tsoos hom tsom iav tsom iav nrog lub qhov muag daim ze ze ua ke dua li lub hom phiaj lo ntsiab muag. Txog thaum xyoo 1960, txhua lub koob yees duab tau ua li no. Txawm li cas los xij, lawv tau yuav luag tag nrho tam sim no vim tias lawv yog cov bulkier, hnyav dua thiab tsis muaj peev xwm tiv taus kev kho mob.
Tuav ib khub ntawm Porro prism binoculars rau lub sijhawm ntev tuaj yeem hnov qhov tsis xis nyob tshwj xeeb tshaj yog thaum piv nrog rau lwm hom koob yees duab. Tau hais tias, qee tus neeg nyiam Porro prism binoculars vim lawv qhov zoo li qub thiab feem ntau tus nqi qis dua.
Roof Prism Binoculars
Cov no yog qhov nqaim, zoo nkauj dua saib cov duab thaij duab uas muaj cov kab ncaj nraim. Qhov kev tsim no ua rau kom muaj kev cog lus ntau dua, yooj yim rau kev tswj hwm thiab lub teeb yuag ob lub koob yees duab uas hais rau cov neeg siv niaj hnub no.
Lub ru tsev prism binoculars zoo li muaj zog dua, muaj peev xwm tiv taus cov huab cua hauv British huab cua thiab muaj nitrogen purged, kaw hlau los yog polycarbonate tej kas tham feem ntau them rau hauv cov roj hmab tiv thaiv txheej kom txo tau tej yam kev puas tsuaj los ntawm mishandling.
Zoo nkauj heev tag nrho cov saum toj kawg nkaus ntawm ntau yam binoculars los ntawm tag nrho cov ua manufacturers feature ib lub ru tsev prism tsim.
Magnification
Txhua lub binoculars yuav muaj cov lej luam tawm ntawm lawv qhov chaw. Lawv yuav raug cais los ntawm "X" thiab cov lej ua ntej "X" qhia qhov loj ntawm qhov koj yuav pom thaum saib los ntawm lo ntsiab muag.
Piv txwv li ob lub koob yees duab uas muaj "10 × 42" stamped rau ntawm lawv yuav muaj 10 zaus magnification (peb yuav mus rau lwm tus lej hauv ib feeb). Yog tias koj tsis tau muaj ob lub koob yees duab ua ntej, tej zaum koj yuav xav tias qhov loj dua qhov loj dua, qhov zoo dua.
Thiab whilst qhov ntawd yuav muaj tseeb hauv qee qhov, tom qab tag nrho, tag nrho cov ntsiab lus ntawm lub koob yees duab yog pom deb ntawm cov khoom, feem ntau nws tsis yooj yim. Muaj lwm yam uas tuaj rau hauv kev ua si, qhov no yog vim hais tias thaum koj nce qhov magnification, koj kuj txo qhov ci ntawm daim duab, qhov tob ntawm kev ua kom pom tseeb thiab qhov pom.
Ntxiv rau, qhov siab dua qhov kev nthuav dav ntau dua qhov yuav pom cov duab pom qhov muag plooj vim koj txhais tes tsis zoo uas yog exaggerated los ntawm qib magnification. Qhov no tshwj xeeb tshaj yog nyob rau hauv cov neeg laus, uas txhais tau hais tias rau ntau tus neeg txo qis magnification ua haujlwm zoo dua.
Txawm li cas los xij, cov neeg feem coob pom zoo tias qhov kev nthuav dav ntawm 7x thiab 10x yog qhov zoo rau ntau yam haujlwm. Yog tias koj txiav txim siab mus siab dua 10x koj yuav xav xav txog kev siv lub koob yees duab los txhawb kev kho qhov muag kom tshem tawm tes tuav, tab sis qhov ntawd txwv koj cov kev xaiv kom zoo li qub thaum siv koj lub koob yees duab.
Lub Hom Phiaj Lens Loj (optical brightness)
Lwm tus lej uas raug ntaus rau ntawm lub koob yees duab, ib qho ntawm lwm sab ntawm "X", yog qhov loj ntawm txoj kab uas hla ntawm lub hom phiaj lens hauv millimeters. Lub hom phiaj lo ntsiab muag yog lub lens deb tshaj plaws ntawm koj ob lub qhov muag thaum koj saib los ntawm lub koob yees duab.
Nws yog hu ua lub hom phiaj lens vim nws nyob ze rau qhov khoom uas koj tab tom saib. Qhov loj dua lub hom phiaj lens, ntau lub teeb uas tso cai rau nkag mus rau hauv lub teeb pom kev zoo uas tig mus, txhim kho qhov ci ntawm daim duab koj tuaj yeem pom.
Muaj lub koob yees duab nrog lub hom phiaj loj dua lub lens txoj kab uas hla yog qhov zoo tshaj plaws rau cov neeg uas nyiam siv lawv lub koob yees duab thaum kaj ntug lossis tsaus ntuj. Los yog cov uas tab tom saib mus rau hauv ntom, tsaus ntoo piv txwv.
Qhov loj dua lub hom phiaj lens, qhov hnyav dua thiab loj dua lub koob yees duab zoo li uas txhais tau hais tias muaj qee qhov kev cuam tshuam xav tau ntawm no thiab. Rau cov hom phiaj siv tau zoo tshaj plaws lub hom phiaj loj loj lo ntsiab muag zoo li nyob qhov twg ntawm 30mm mus rau 50mm tab sis nco ntsoov qhov hnyav rau qhov sib piv.
Nws yuav yog koj uas yuav tsum nqa lub koob yees duab ncig thiab tuav lawv ntawm koj lub qhov muag rau lub sijhawm ntev.
Lub koob yees duab loj
Binoculars zoo li tuaj nyob rau hauv peb qhov ntau thiab tsawg uas yog;
1.Compact -Binoculars nrog lub hom phiaj lens qis dua 30 hli
2.Mid Size – Binoculars nrog lub hom phiaj lens loj ntawm 30-40 hli
3.Full Size – Binoculars nrog lub hom phiaj lens loj 42 mm lossis ntau dua
Pom tseeb raws li qhov loj ntawm lub hom phiaj lens nce, yog li qhov loj thiab qhov hnyav ntawm lub koob yees duab. Qhov no txhais tau hais tias cov sijhawm sib txawv tuaj yeem txiav txim cov duab sib txawv.
Piv txwv li, yog tias koj tab tom taug kev los ntawm thaj chaw loj thiab nqa txhua yam koj xav tau ntawm koj nraub qaum, koj yuav xav tau ib nkawm me me, lub teeb pom kev zoo uas tuaj yeem yooj yim haum rau hauv hnab ris lossis koj lub hnab ev ntawv.
Txawm li cas los xij, yog tias koj zaum nyob rau pem hauv ntej ntawm daim duab loj qhov rais saib mus rau hiav txwv, ib khub loj dua yuav haum koj zoo dua. Thaum nws los txog qhov loj ntawm ob lub koob yees duab uas koj xaiv, koj tus kheej lub zog thiab lub peev xwm yuav tsum tau muab rau hauv kev txiav txim siab.
Teb Chaws Saib
Raws li peb tau hais ua ntej, qhov siab dua qhov kev nthuav dav ntawm ob lub koob yees duab yuav cuam tshuam rau qhov pom. Nyob ntawm qhov kev ua si uas koj siv lub koob yees duab rau, thaj chaw saib yog ib qho tseem ceeb.
Kev pom dav dua ua rau nws yooj yim dua los luam theej duab loj, qhov dav dav ua rau nws yooj yim dua los ua raws li cov noog txav nrawm lossis tsiaj hla cov teb qhib. Lub teb ntawm kev pom yuav raug ntsuas raws li lub kaum sab xis (ib qho kev sib txawv rau lub koob yees duab yog 6orau 8o) los yog raws li ib tug linear ntsuas ntawm tus naj npawb ntawm meters pom nyob rau hauv lub teb ntawm ib tug deb ntawm 1000 meters.
Qee zaum qhov kev ntsuas linear kuj tseem nyob hauv yards tshaj 1000 yards. Lub teb ntawm kev pom feem ntau yuav tshwm sim ntawm lub koob yees duab qhov chaw.
Khob qhov muag
Cov koob yees duab niaj hnub no feem ntau muaj lub khob qhov muag kho tau kom lawv siv tau yooj yim dua. Ntau qhov kev xaiv qis dua muaj roj hmab qhov muag khob uas tuaj yeem folded nce lossis nqis.
Cov qauv kim dua tuaj yeem muaj cov yas lossis hlau, roj hmab coated qhov muag khob uas tuaj yeem sib tw thiab nqis raws li xav tau. Lub khob qhov muag pab koj tuav lub koob yees duab ntawm qhov tseeb ntawm qhov kev ncua deb ntawm koj ob lub qhov muag kom pom tag nrho qhov kev pom nrog kev nplij siab thaum tiv thaiv lub teeb sab nraud los ntawm kev ua rau pom.
Yog tias koj hnav tsom iav qhov muag, koj tuaj yeem ntswj cov khob qhov muag tag nrho kom coj koj ob lub qhov muag los ze zog rau lub qhov muag thaum tseem hnav koj lub tsom iav.
Qhov muag nyem
Lub qhov muag nyem nyob rau hauv binoculars hais txog qhov deb tshaj plaws uas tus neeg siv tuaj yeem tso lawv lub qhov muag tom qab lub qhov muag thiab tseem pom qhov pom tag nrho. Pom tau tias qhov muag nyem yog qhov tseem ceeb dua rau cov neeg siv tsom iav vim tias cov iav yuav tsum haum ntawm tus neeg siv lub qhov muag thiab lub qhov muag ntawm lub tsom iav.
Yog tias koj hnav tsom iav, koj yuav tsum tau saib cov duab tsom iav uas qhia txog qhov muag ntev. Ntev qhov muag nyem feem ntau yog qhov ntsuas ntawm 16mm lossis ntau dua. Txawm li cas los xij, nyob ntawm hom thiab tuab ntawm koj lub tsom iav, koj yuav xav tau ob lub koob yees duab nrog lub qhov muag nyem ntawm 18mm lossis ntau dua kom pom qhov pom tag nrho.
Optical Zoo Ntawm Lub Lenses
Obviously lub optics ntawm lub binoculars yog ib qho tseem ceeb thaum txiav txim siab uas khub yuav. Muaj ntau yam khoom siv kho qhov muag tau hais hauv ntau lub koob yees duab nrov dua thiab muaj kev hwm zoo uas suav nrog;
ED lossis HD iav
Ntxiv-tsawg dispersion (ED) los yog siab ceev (HD) cov ntsiab lus nyob rau hauv lub iav ntawm lub hom phiaj lo ntsiab muag yog tsim los txo chromatic aberration. Qhov no yog qhov uas daim duab muaj cov xim ci ntsa iab nyob ib ncig ntawm nws thaum koj tab tom saib hauv lub koob yees duab.
Cov khoom uas tau saib los ntawm lub koob yees duab nrog ED lossis HD iav muaj lub ntsej muag zoo nkauj, ntse dua, txhais tau tias zoo dua thiab cov xim zoo li muaj tseeb dua thoob plaws tag nrho cov spectrum. Qhov no txhais tau tias cov duab zoo li qub los ntawm ED lossis HD iav ua rau lawv zoo tagnrho rau txhua daim ntawv thov suav nrog kev saib noog thiab saib qhov xwm txheej.
Lens & Prism Txheej
Qhov zoo ntawm cov khoom siv kho qhov muag ua rau qhov sib txawv ntawm OK binoculars thiab cov koob yees duab zoo. Cov txheej txheem no feem ntau ua haujlwm siab, tiv thaiv kev cuam tshuam thiab kev sib kis tau zoo thiab yog siv los txhim kho lub teeb kis tau tus mob thiab txo qhov kev xav sab hauv.
Zoo nkauj npaum li txhua ob lub koob yees duab ntawm lub lag luam niaj hnub no siv qee cov txheej txheem los txhim kho lawv cov khoom kho qhov muag. Txawm li cas los xij, cov txheej txheem sib txawv heev los ntawm cov chaw tsim khoom rau cov chaw tsim khoom thiab tag nrho cov nqi ntawm cov tsom iav tuaj yeem txiav txim siab txog qib txheej txheej. Raws li kev qhia dav dav;
Coated
Qhov no txhais tau hais tias qee qhov chaw tau coated nrog cov txheej txheem kho qhov muag tshwj xeeb.
Coated Tag Nrho
Qhov no txhais tau tias tag nrho cov iav nto tau coated
Multi-Coated
Qhov no txhais tau hais tias qee qhov iav qhov chaw tau coated nrog ntau txheej
Siab Multi-Coated
Qhov no txhais tau hais tias tag nrho cov iav nto tau coated nrog ntau txheej txheej tshwj xeeb kho qhov muag
Yog tias koj xav tau qhov zoo tshaj plaws los ntawm koj lub koob yees duab tshiab, koj yuav tsum tau yuav ib khub uas muaj ntau ntau txheej.
Anti-Reflection High Transmission Coatings
Qhov kawg siab dua, sab saum toj ntawm ntau lub koob yees duab muaj ntau txheej txheej ntawm kev tiv thaiv kev cuam tshuam siab kis tau zoo siv rau lawv cov iav kho qhov muag. Qhov no txo cov kev xav sab hauv thiab tsim kom pom cov duab zoo dua.
Txawm li cas los xij, qhov no yog ib qho nyuaj thiab kim txheej txheem uas ua rau kom tus nqi ntawm lub koob yees duab ntau heev.
Phase Corrected Roof Prisms
Lub ru tsev prisms ua hauj lwm los ntawm splitting lub teeb uas hla dhau lawv thiab recombining nws raws li nws txuas ntxiv los ntawm lawv. Tshwj tsis yog cov prisms raug kho raws theem, cov teeb pom kev zoo no tuaj yeem dhau los ntawm theem uas ua rau muaj qhov sib txawv tsawg dua thiab nthuav dav thaum daim duab tau rov ua dua.
Ib khub zoo ntawm lub ru tsev prism binoculars yuav muaj cov txheej txheem kho tshwj xeeb uas siv los tiv thaiv qhov no los ntawm qhov teeb meem.
Ru Tsev Prism Mirror Txheej
Tus tsim ntawm lub ru tsev prisms kuj xav tau ib tug tshwj xeeb reflective daim iav txheej ntawm ib tug ntawm cov prism nto kom pom lub teeb los ntawm lub prism thiab mus rau lub eyepiece. Qhov siab dua lub teeb kis ntawm cov txheej no, qhov ci dua daim duab yuav tshwm nyob rau hauv cov teeb pom kev tsawg.
Muaj peb lub ntsiab iav txheej txheej uas yog siv los pleev xim rau lub ru tsev prisms uas yog;
Aluminium Daim iav Txheej
Hom txheej no feem ntau ua rau lub teeb kis ntawm 87 mus rau 93%
Nyiaj Daim iav Txheej
Hom txheej no feem ntau ua rau lub teeb kis ntawm 95 mus rau 98%
Dielectric Daim iav Txheej
Qhov no yog txheej kim tshaj plaws uas feem ntau pom nyob rau hauv siab kawg, siab spec binoculars. Nws ua rau ntau tshaj 99% lub teeb kis tau tus mob
Cov txheej txheem tiv thaiv
Ntau qhov ntau dua spec binoculars yog coated nrog high tech txheej los tiv thaiv cov ilv txheej uas twb siv rau sab nraud ntawm lub lo ntsiab muag. Cov coatings muaj zog no yog tsim los tiv thaiv khawb thiab abrasions thiab txo qhov xav tau kev tu lub lo ntsiab muag raws li lawv kuj tawm tsam av thiab dej.
Ntxiv rau thaum lub lo ntsiab muag xav tau kev ntxuav, nws yuav siv sij hawm tsawg dua vim yog txheej txheej. Ntau ntawm cov nqi nruab nrab ntawm cov duab tsom iav tau pib siv cov txheej tiv thaiv tam sim no.
Qhov ntawd txhais tau hais tias yog tias koj tuaj yeem them taus siv me ntsis ntau dua li qhov koj xav tau thaum xub thawj, koj tuaj yeem tau txais cov txheej txheem zoo nkauj ntawm optics.
Kev tuav & sib npaug
Cov koob yees duab loj dua yuav nyuaj rau kev ua haujlwm dua li cov qauv me me dua. Txawm li cas los xij, txawm tias qee cov qauv loj yog ergonomically tsim los yooj yim rau kev siv.
Yam tseem ceeb uas cuam tshuam qhov hnyav ntawm lub tsom iav tsom iav suav nrog;
1.Qhov loj ntawm lub hom phiaj lens
2.Cov khoom siv hauv kev tsim kho
3.Qhov ntev ntawm lub teeb pom kev zoo
Tau hais tias, qhov loj thiab cov duab ntawm lub koob yees duab uas koj xaiv yog qhov teeb meem ntawm tus kheej. Dab tsi suits ib tug neeg yuav tsis haum lwm tus.
Fog / Waterproofing
Hauv lub ntiaj teb zoo tshaj plaws, peb tsuas yog siv peb lub koob yees duab nyob rau hnub ntshiab, qhuav. Txawm li cas los xij, qhov tseeb yog qee yam txawv. Txawm hais tias lub hnub pib ci thiab tshav ntuj, cov huab cua tuaj yeem yob hauv txhua lub sijhawm.
Qhov no txhais tau tias koj yuav tsum xaiv ob lub koob yees duab uas muaj kev tiv thaiv huab cua. Peb pom zoo kom yuav cov koob yees duab uas tau muab tshem tawm siv cov roj inert xws li nitrogen lossis argon.
Qhov no yuav tshem tawm cov huab cua thiab cov dej noo uas tiv thaiv cov lo ntsiab muag sab hauv los ntawm fogging los yog condensing. Qhov no tuaj yeem muaj txiaj ntsig zoo thaum tsiv ntawm qhov chaw ntawm lub tsheb sov thiab tawm mus rau hauv huab cua txias lossis ntub dej hauv pas dej.
Choj Hom
Ntau cov kab ke uas tsim los ua ke muaj ib tus choj uas hinges. Txawm li cas los xij, ntau lub tuam txhab tam sim no tau koom nrog cov qauv sib tw sib tw rau hauv lawv qhov ntau.
Cov qauv kev sib tw ntxaib no tuaj yeem muab qee yam ntxiv rau hauv txoj kev ntawm ergonomics thiab kev nplij siab tshwj xeeb tshaj yog tias koj tuav lawv rau lub sijhawm ntev.
Tsev & Roj Hmab Casing
Ib qho ntawm cov ntsiab lus tseem ceeb uas txiav txim siab qhov hnyav tag nrho ntawm lub koob yees duab yog cov khoom siv los ua vaj tsev. Nws tseem yog daim ntawv tseem ceeb ntawm kev tiv thaiv rau cov khoom siv kho qhov muag muag.
Qhov no txhais tau hais tias lub vaj tsev zoo tshaj plaws binocular yuav tsum hnav thiab muaj zog heev. Nyob rau hauv lawv cov kev tshawb fawb rau lub teeb yuag thiab ruaj khov binocular vaj tse, manufacturers tau xaiv peb cov ntaub ntawv tseem ceeb, uas yog;
Polycarbonate
Cov khoom siv no muaj zog tsis tau hnav thiab tus nqi qis dua los tsim piv rau lwm hom khoom siv los tsim cov duab thaij duab. Polycarbonate vaj tse zoo li yuav pom nyob rau hauv ntau qhov qis mus rau nruab nrab nqi ntawm ob lub koob yees duab.
Aluminium Alloy
Aluminium yog lub teeb tsis tau muaj zog ntawm cov hlau alloy thiab feem ntau pom muaj nyob rau hauv ntau qhov nruab nrab mus rau siab nqi binoculars.
Magnesium alloy
Qhov no yog qhov muaj zog tshaj plaws thiab lub teeb tshaj plaws ntawm peb cov ntaub ntawv siv hauv kev tsim kho lub koob yees duab thiab feem ntau pom muaj nyob rau hauv high end optics thiab hwm qauv.
Raws li lub tsev nyob ruaj khov, zoo nkauj npaum li cas txhua lub koob yees duab niaj hnub no tseem yuav muaj qee qib roj hmab tiv thaiv txheej siv rau ob lub thoob los pab tiv thaiv kev puas tsuaj. Cov txheej no tsis tsuas yog tiv thaiv cov pob thiab khawb, tab sis kuj tseem pab txhim kho kev tuav thiab xyuas kom tuav lub koob yees duab zoo ib yam.
Qee tus txawm muaj molded tes tuav kom yooj yim dua thiab txhim kho tuav.
Kaw Focus
Ua kom pom tseeb ze yog cov ntaub ntawv uas tso cai rau koj paub tias ze li cas ntawm cov khoom koj tuaj yeem ua tau thiab tseem pom nws ua cov duab ntse thiab meej. Qhov no tuaj yeem pab tau rau cov neeg saib noog thiab lwm tus uas nyiam saib ze ntawm qhov xwm txheej.
Binoculars uas muaj kev ua kom pom tseeb zoo li lub ntsej muag zoo li hais txog qee yam xws li "kev tsom mus ze 2 meters". Qhov no txhais tau hais tias koj tuaj yeem saib cov duab meej ntawm cov khoom ntawm tsawg li 2 meters deb.
Nqe
Hauv lub ntiaj teb zoo tshaj plaws, peb txhua tus plump rau qhov kev xaiv kim tshaj plaws uas pom zoo rau kev ua si tshwj xeeb uas peb nyiam. Txawm li cas los xij, qhov tseeb yog peb txhua tus muaj peev nyiaj. Nws tsim nyog nco ntsoov tias qhov kev xaiv pheej yig tshaj tsis tas yuav muab qhov zoo tshaj plaws ntawm tus nqi lossis qhov zoo.
Nyob ntawm seb koj xav siv lawv li cas, koj lub koob yees duab yuav yog qhov tseem ceeb tshaj plaws ntawm cov khoom siv uas koj yuav tsum tau yuav. Yog tias koj npaj siab yuav siv lawv li niaj zaus, tus nqi tag nrho yuav ua haujlwm tsawg dua lub sijhawm.
Kev yuav ib tus nqi nruab nrab lossis txawm tias tus nqi siab ntawm ob lub koob yees duab yuav yog qhov kev nqis peev zoo dua. Qhov no yog vim lawv yuav muab koj cov duab zoo dua, daws teeb meem ntau dua nyob rau hauv ntau yam teeb pom kev zoo.
Ntxiv rau lawv yuav muaj kev tsim kho zoo dua thiab tiv taus huab cua thiab lwm yam khoom xws li plua plav thiab lwm yam. Obviously koj yog tib tug uas paub tias koj tuaj yeem siv nyiaj ntau npaum li cas los siv rau ob lub koob yees duab.
Tab sis, qhov zoo dua lawv yog, qhov ntau dua koj yuav siv lawv tsis tu ncua thiab qhov kev lom zem ntau dua lawv yuav muab rau koj.