Cov iav lim dej kho qhov muag yog ib lub iav uas tuaj yeem hloov qhov kev taw qhia ntawm lub teeb kis thiab hloov pauv qhov sib piv ntawm lub teeb ultraviolet, pom, lossis infrared. Cov iav kho qhov muag tuaj yeem siv los ua cov cuab yeej kho qhov muag hauv lub lens, prism, speculum thiab lwm yam. Qhov sib txawv ntawm cov iav kho qhov muag thiab lwm yam iav yog tias nws yog ib feem ntawm lub kaw lus kho qhov muag uas xav tau kev thaij duab kho qhov muag. Yog li ntawd, qhov zoo ntawm cov iav kho qhov muag kuj muaj qee qhov ntsuas nruj dua.
Ua ntej, qhov tshwj xeeb optical tas li thiab qhov sib xws ntawm tib pawg iav
Cov iav kho qhov muag ntau yam muaj cov nqi refractive index rau ntau qhov wavelengths ntawm lub teeb, uas yog lub hauv paus rau cov neeg tsim khoom los npaj cov kab ke kho qhov muag. Yog li ntawd, qhov tsis hloov pauv ntawm cov iav kho qhov muag uas tsim los ntawm lub Hoobkas yuav tsum nyob hauv cov kev ua yuam kev no, txwv tsis pub qhov tshwm sim yuav tawm ntawm qhov kev cia siab ntawm kev xyaum ntawm qhov zoo ntawm daim duab.
Qhov thib ob, qhov transmittance
Qhov ci ntsa iab ntawm daim duab ntawm lub tshuab kho qhov muag yog sib npaug rau qhov pom tseeb ntawm lub iav. Lub iav kho qhov muag yog qhia ua lub zog nqus teeb, Kλ Tom qab ntau lub prisms thiab lens, lub zog ntawm lub teeb poob me ntsis ntawm qhov cuam tshuam ntawm qhov kho qhov muag, thaum lwm qhov raug nqus los ntawm qhov nruab nrab (iav) nws tus kheej. Yog li ntawd, lub tshuab kho qhov muag uas muaj ntau lub lens nyias nyias, tib txoj hauv kev los ua kom tus nqi dhau mus yog txo qhov kev poob ntawm lub lens sab nraud, xws li siv cov txheej membrane permeable sab nraud.
Saida Glassyog kaum xyoo ua iav Hoobkas, teeb tsa kev tshawb fawb thiab kev txhim kho, kev tsim khoom thiab kev muag khoom hauv ib qho, thiab kev thov ua lag luam, kom tau raws li lossis txawm tias tshaj qhov kev cia siab ntawm cov neeg siv khoom.
Lub sijhawm tshaj tawm: Lub Rau Hli-05-2020