Tsab xov xwm hais txog Cov Khoom ntawm daim duab uas tsim los ntawm daim iav convex
Qhov nrug ntawm yam khoom me dua qhov ntev ntawm lub iav convex (do < f)
Raws li kev xam ntawm daim duab tsim los ntawm daim iav convex , nws tuaj yeem xaus lus tias yog tias qhov deb ntawm yam khoom (do) me dua qhov ntev focal (f), cov khoom ntawm daim duab yog:
- Virtual txhais tau tias lub teeb tsis hla dhau daim duab vim tias daim duab nyob tom qab daim iav convex.
- Ntsug
– Qhov deb ntawm daim iav convex ntawm qhov khoom, qhov loj ntawm daim duab yuav me dua.
- Qhov deb ntawm daim iav convex, qhov me dua ntawm daim iav convex
Qhov nrug ntawm cov khoom yog tib yam li qhov ntev ntawm lub iav convex (do = f)
Raws li kev xam ntawm cov duab tsim los ntawm daim iav convex , nws tuaj yeem xaus lus tias yog tias qhov deb ntawm cov khoom sib npaug rau qhov ntev ntawm daim iav, cov khoom ntawm daim duab yog:
- Virtual txhais tau tias lub teeb tsis hla dhau daim duab vim tias daim duab nyob tom qab daim iav convex.
- Ntsug
- Txo kom me me (Qhov loj ntawm daim duab = ½ npaug ntawm qhov loj ntawm yam khoom)
– Qhov nrug ntawm daim duab me dua qhov nrug ntawm yam khoom (qhov nrug ntawm daim duab = ½ npaug ntawm qhov nrug ntawm yam khoom)
Qhov nrug ntawm yam khoom loj dua qhov ntev ntawm lub lens thiab me dua qhov radius ntawm curvature ntawm daim iav convex (f < do < R)
Raws li kev xam ntawm daim duab tsim los ntawm daim iav convex , nws tuaj yeem xaus lus tias yog tias cov khoom nyob nruab nrab ntawm qhov chaw tsom mus rau qhov chaw thiab lub vojvoog ntawm qhov nkhaus, cov khoom ntawm daim duab yog:
- Virtual txhais tau tias lub teeb tsis hla dhau daim duab vim tias daim duab nyob tom qab daim iav convex.
- Ntsug
- Qhov loj ntawm daim duab me dua li qhov loj ntawm yam khoom
- Qhov deb ntawm qhov khoom nyob ntawm daim iav convex, qhov deb ntawm daim duab ntawm daim iav convex
Qhov nrug ntawm cov khoom yog sib npaug rau lub vojvoog ntawm qhov nkhaus ntawm daim iav convex (do = R)
Raws li kev xam ntawm daim duab tsim los ntawm daim iav convex , nws tuaj yeem xaus lus tias yog tias qhov deb ntawm cov khoom zoo ib yam li lub vojvoog ntawm qhov curvature, cov khoom ntawm daim duab yog:
- Virtual txhais tau tias lub teeb tsis hla dhau daim duab vim tias daim duab nyob tom qab daim iav convex.
- Ntsug
- Minimized (qhov loj ntawm daim duab = 1/3 npaug ntawm qhov loj ntawm yam khoom)
- Qhov nrug ntawm daim duab me dua qhov nrug ntawm yam khoom (Qhov nrug ntawm daim duab = 1/3 npaug ntawm qhov nrug ntawm yam khoom)
Qhov nrug ntawm yam khoom loj dua li lub vojvoog ntawm qhov nkhaus ntawm daim iav convex (do > R)
Raws li kev xam ntawm cov duab tsim los ntawm daim iav convex , nws tuaj yeem xaus lus tias yog tias qhov deb ntawm cov khoom loj dua lub vojvoog ntawm qhov nkhaus ntawm daim iav, cov khoom ntawm daim duab yog:
- Virtual txhais tau tias lub teeb tsis hla dhau daim duab vim tias daim duab nyob tom qab daim iav convex.
- Ntsug
- Qhov loj ntawm daim duab me dua li qhov loj ntawm yam khoom
- Qhov deb ntawm daim duab me dua qhov deb ntawm yam khoom (daim duab nyob ze rau daim iav, yam khoom nyob deb ntawm daim iav)
- Daim duab hom twg yog tsim los ntawm daim iav convex?
Cov iav convex ib txwm tsim cov duab virtual, diminished, thiab erect.
- Qhov chaw ntawm ib yam khoom cuam tshuam li cas rau qhov chaw ntawm daim duab hauv daim iav convex?
Txawm yog yam khoom ntawd nyob qhov twg los xij, daim duab uas tsim los ntawm daim iav convex yeej ib txwm nyob nruab nrab ntawm daim iav thiab qhov tsom.
- Vim li cas cov duab uas tsim los ntawm cov iav convex thiaj li ploj mus?
Cov duab raug txo qis vim tias cov teeb ci sib txawv thaum cuam tshuam. Yog li ntawd, lawv zoo li los ntawm ib qho chaw uas nyob ze rau daim iav dua li qhov khoom tiag tiag, ua rau daim duab zoo li me dua li qhov khoom.
- Qhov magnification 'm' ntawm daim iav convex cuam tshuam li cas rau daim duab thiab qhov deb ntawm cov khoom?
Qhov kev loj hlob ntawm daim iav convex yog muab los ntawm qhov sib piv ntawm qhov siab ntawm daim duab rau qhov siab ntawm cov khoom, uas kuj sib npaug rau qhov sib piv ntawm qhov deb ntawm daim duab 'v' rau qhov deb ntawm cov khoom 'u'. Rau daim iav convex, 'm' sib npaug -v/u.
- Qhov tseem ceeb ntawm lub cim tsis zoo hauv cov mis loj rau cov iav convex yog dab tsi?
Lub cim tsis zoo qhia tias daim duab yog virtual thiab erect, vim tias cov duab tsim los ntawm cov iav convex yeej ib txwm virtual thiab erect.
- Qhov ntev focal 'f' ntawm daim iav convex muaj feem cuam tshuam li cas rau lub vojvoog ntawm curvature 'R'?
Qhov ntev ntawm daim iav convex yog ib nrab ntawm lub vojvoog ntawm qhov nkhaus, yog li 'f' sib npaug R / 2. Rau daim iav convex, qhov ntev ntawm qhov nkhaus raug suav tias yog qhov tsis zoo, qhia tias qhov kev tsom mus rau yog virtual.
- Puas yog qhov deb ntawm yam khoom 'u' zoo los yog tsis zoo rau daim iav convex?
Rau daim iav convex, qhov deb ntawm yam khoom 'u' raug suav tias yog qhov tsis zoo. Cov lus cog tseg no tshwm sim los ntawm qhov tseeb tias yam khoom ib txwm muab tso rau ntawm pem hauv ntej ntawm daim iav.
- Yuav ua li cas los xam qhov sib npaug ntawm daim iav rau daim iav convex thiab nws tau los li cas?
Tus qauv ntawm daim iav yog 1/v + 1/u = 1/f. Nws yog los ntawm cov duab geometry ntawm cov iav kheej kheej, xav txog kev sib raug zoo ntawm qhov deb ntawm cov khoom, qhov deb ntawm daim duab, thiab qhov ntev ntawm lub lens.
- Thaum lub khoom mus txog daim iav, daim duab uas tsim los ntawm daim iav convex yuav zoo li cas?
Thaum lub khoom los ze rau daim iav, daim duab kuj los ze rau daim iav, tab sis nws yeej ib txwm me dua li lub khoom thiab nyob nruab nrab ntawm tus ncej thiab qhov tsom.
- Vim li cas cov iav convex feem ntau siv rau cov iav saib tom qab hauv tsheb?
Cov iav convex feem ntau siv ua cov iav saib tom qab vim tias lawv tsim cov duab me dua, muab qhov pom dav dua. Qhov no tso cai rau tus tsav tsheb pom ntau qhov chaw nyob tom qab lub tsheb, ua kom muaj kev nyab xeeb ntxiv.
