Yog tias ib yam khoom nyob rau ib sab ntawm lub lens concave, lub lens concave tuaj yeem tsim ib daim duab ntawm yam khoom. Yog tias qhov chaw ntawm yam khoom nyob rau ib sab ntawm lub lens concave paub, koj yuav kos duab ntawm yam khoom li cas? Txhawm rau kom meej qhov no, xav tias ib yam khoom nyob rau sab laug. lub lens concave raws li qhia hauv daim duab hauv qab no.
Cov Lus Piav Qhia:
Kab txiv kab ntxwv = lub lens concave
Kab xiav = lub lens axis
Xub (ntsuab) = khoom
F1 = qhov ntev ntawm qhov focal 1 thiab F2 = qhov ntev ntawm lub focal 2
Ib daim duab ntawm ib yam khoom lub duab ntxoov ntxoo tau los ntawm kev kos tag nrho cov teeb ci uas hla dhau yam khoom, tab sis qhov no tsis yooj yim vim tias yuav muaj ntau kab uas sawv cev rau cov teeb ci. Rau kev yooj yim, tsuas yog ob peb lub teeb ci raug xaiv los sawv cev rau tag nrho cov teeb ci uas hla dhau yam khoom. Vim tias qhov xwm txheej no cuam tshuam nrog kev cuam tshuam ntawm lub teeb , cov cai ntawm kev cuam tshuam yuav tsum tau ua raws li thaum kos duab ntxoov ntxoo.
Peb lub teeb ci lossis cov teeb ci tshwj xeeblub lens concave
Lub teeb tshwj xeeb 1:
Txoj kab teeb 1 lossis lub teeb ci 1 uas los rau ntawm lub lens concave yog piav qhia tias sib luag rau lub lens axis thiab kov ntug sab saud ntawm cov khoom, tom qab ntawd refracted los ntawm lub lens concave qhov twg lub teeb refracted zoo li los ntawm qhov chaw tseem ceebCov kab teeb ci thiab cov kab teeb ci uas tau piav qhia yuav tsum ua tiav txoj cai ntawm kev cuam tshuam ntawm lub teeb.
Lub teeb tshwj xeeb 2:
Txoj kab teeb 2 lossis lub teeb 2 uas los rau ntawm lub lens concave yog piav qhia zoo li nws tab tom mus rau qhov chaw tseem ceeb thiab kov ntug sab saud ntawm cov khoom, tom qab ntawd refracted los ntawm lub lens concave qhov twg lub teeb refracted yuav tsum sib luag rau lub lens axis. Lub teeb ci thiab lub teeb refracted uas tau piav qhia yuav tsum ntsib txoj cai ntawm kev cuam tshuam ntawm lub teeb.
Lub teeb tshwj xeeb 3:
Txoj kab teeb 3 lossis lub teeb ci 3 uas los rau ntawm lub lens concave yog piav qhia tias dhau los ntawm qhov chaw sib tshuam ntawm lub lens concave thiab lub lens axis, tom qab ntawd txuas ntxiv mus.
Kev tsim duab ntxoov ntxoo (ob lub teeb tshwj xeeb)
Tsuas yog siv ob lub teeb ci xwb thiaj li piav tau qhov duab ntxoov ntxoo ntawm ib yam khoom, raws li pom hauv daim duab hauv qab no. Yog tias siv ob lub teeb ci lossis ob lub teeb tshwj xeeb, ces yuav muaj peb daim duab uas qhia tau tias muaj duab ntxoov ntxoo.
Cov kab tshwj xeeb 1 thiab 2
Cov kab tshwj xeeb 1 thiab 3
Cov kab tshwj xeeb 2 thiab 3
Daim duab ntawm kev tsim cov duab ntawm ib yam khoom siv tsuas yog ob lub teeb ci yuav tsum tau kho kom haum rau qhov deb ntawm yam khoom ntawm lub lens concave. Yog tias qhov deb ntawm yam khoom ntawm lub lens concave zoo li hauv daim duab saum toj no, muaj peb txoj hauv kev los kos cov duab tsim siv tsuas yog ob lub teeb ci. Yog tias qhov deb ntawm yam khoom ntawm lub lens concave txawv ntawm daim duab saum toj no, piv txwv li, yam khoom nyob nruab nrab ntawm qhov chaw tsom mus rau qhov chaw thiab qhov chaw nruab nrab ntawm qhov nkhaus, ces tej zaum yuav tsis tas yuav muaj peb txoj hauv kev los kos cov duab tsim, tej zaum tsuas yog ob txoj hauv kev los kos.
Yog koj kos duab los ntawm lub lens concave, koj tuaj yeem xaiv ib txoj kev thiab tsis tas yuav siv ob lossis peb txoj kev.
Kev tsim duab (peb lub teeb tshwj xeeb)
Qhov kev tsim ntawm ib yam khoom lub duab ntxoov ntxoo tuaj yeem piav qhia siv peb lub teeb ci lossis peb lub teeb tshwj xeeb, raws li pom hauv daim duab hauv qab no.
Yog tias qhov deb ntawm cov khoom ntawm lub lens concave tsis zoo li hauv daim duab saum toj no, piv txwv li cov khoom nyob nruab nrab ntawm lub lens concave thiab qhov chaw tsom, lossis cov khoom nyob nruab nrab ntawm qhov chaw tsom thiab qhov chaw nruab nrab ntawm qhov nkhaus ntawm lub lens concave, ces nws tsis tas yuav yog qhov teeb meem uas kev tsim cov duab ntawm cov khoom tuaj yeem piav qhia siv peb txoj hauv kev lossis peb txoj hauv kev zoo li hauv daim duab saum toj no. Tej zaum yuav muaj tsuas yog ob txoj hauv kev lossis ob txoj hauv kev los kos cov duab tsim. Thov saib cov piv txwv ntawm cov duab ntawm kev tsim cov duab ntawm cov khoom los ntawm lub lens concave, qhov twg qhov deb ntawm cov khoom ntawm lub lens concave sib txawv, ntawm cov ncauj lus ntawm cov duab ntawm lub lens concave.
