Polarizer vs UV Filter
Polarizers thiab UV lim yog ob lub cuab yeej siv los lim cov khoom siv hluav taws xob tsis zoo. Cov polarizer yog siv kom tau txais polarization, thiab UV lim yog siv los lim tawm cov kab hluav taws xob ultraviolet los ntawm cov kab hluav taws xob hluav taws xob. Ob leeg ntawm cov khoom siv no muaj ntau yam kev siv thiab muaj txiaj ntsig zoo hauv lub neej txhua hnub. Nws yog ib qho tseem ceeb kom nkag siab txog dab tsi polarizers thiab UV cov ntxaij lim dej kom ua tau zoo hauv thaj chaw xws li optics, kev yees duab, kev tsim qauv kev nyab xeeb thiab ntau yam haujlwm. Hauv tsab xov xwm no, peb yuav tham txog dab tsi polarization yog dab tsi, polarizers thiab UV cov ntxaij lim dej yog dab tsi, lawv cov ntawv thov, qhov zoo sib xws ntawm polarizations thiab UV lim, lawv muaj dab tsi, thiab thaum kawg qhov txawv ntawm UV lim thiab polarizers.
Polarizer
Yuav kom nkag siab txog polarizer, ib tus yuav tsum xub nkag siab polarization. Polarization tsuas yog txhais tau tias yog ib hom kev taw qhia ntawm oscillations hauv nthwv dej. Polarization ntawm nthwv dej piav qhia cov kev taw qhia ntawm oscillation ntawm nthwv dej nrog rau kev coj ntawm kev nthuav tawm; Yog li ntawd, tsuas yog transverse nthwv dej tso saib polarization. Lub oscillation ntawm hais nyob rau hauv ib tug longitudinal yoj ib txwm nyob rau hauv cov kev taw qhia ntawm propagation; Yog li ntawd, lawv tsis pom polarization. Muaj peb hom polarization, uas yog linear polarization, ncig polarization thiab elliptical polarization. Xav txog ib tug nthwv dej taug kev los ntawm qhov chaw. Yog hais tias lub nthwv dej yog ib tug mechanical yoj, ib tug particle yog cuam tshuam los ntawm nthwv dej thiab oscillates. Yog hais tias cov particle oscillates ntawm ib txoj kab perpendicular mus rau kev taw qhia ntawm propagation, yoj yog hais tias yuav linearly polarized. Yog hais tias lub particle traces tawm ib tug ellipse ntawm ib tug dav hlau perpendicular mus rau lub zog ntawm propagation, nthwv dej yog ib tug elliptical polarized nthwv dej. Yog hais tias lub particle taug qab ib lub voj voog ntawm ib lub dav hlau perpendicular mus rau cov kev taw qhia ntawm propagation, lub yoj yog hais tias yuav ncig polarized. Cov txheej txheem ntawm polarizing yog ua tiav siv lub polarizer. Lub polarizer yog ib qho khoom siv uas tsuas yog tso cai rau qee feem ntawm nthwv dej dhau los ntawm nws.
UV lim
YUV yog lub npe siv los qhia txog cov kab hluav taws xob ultraviolet. UV rays nyob hauv thaj tsam ntawm 10 txog 400 nanometers, lossis 5 eV txog 124 eV. UV cov ntxaij lim dej yog tsim los lim tawm UV ntau yam ntawm electromagnetic nthwv dej ntawm ib txheej. Qhov no muaj txiaj ntsig zoo heev, vim tias qhov ntev ntev ntawm UV rays tuaj yeem ua rau mob qog noj ntshav. UV lim tsom iav (UV txiav) yog siv dav hauv tsheb. Ntau qhov ntau ntawm UV rays tau tawm hauv cov txheej txheem arc vuam. Lub iav cob alt yog siv los lim tawm UV hauv cov xwm txheej zoo li no.
Qhov txawv ntawm Polarizer thiab UV Filter yog dab tsi?
• Polarizers lim hauv ib qho kev taw qhia ntawm EM nthwv dej whereas UV lim tawm UV rays.
• Lub polarizer ua haujlwm nyob rau hauv ib lub wavelength, tab sis ib tug UV lim tsuas lim tawm UV rays.
• Ib lub polarizer cia cov nqaj xav tau hla thaum lub polarizer thaiv cov nqaj xav tau.
• Polarizers yog siv nyob rau hauv Polaroid tsom iav thiab tints. UV cov ntxaij lim dej yog siv rau hauv lub tsheb iav tsom iav thiab tiv thaiv qhov muag.
