Cov tawv nqaij ib txwm muaj peev xwm nqus tau lub teeb los tiv thaiv lub cev thiab cov ntaub so ntswg hauv lub cev los ntawm lub teeb puas. Lub peev xwm ntawm lub teeb nkag mus rau tib neeg cov ntaub so ntswg yog ze ze rau nws cov wavelength thiab cov qauv ntawm daim tawv nqaij. Feem ntau, qhov luv luv wavelength, qhov ntiav qhov nkag mus rau hauv daim tawv nqaij. Cov tawv nqaij absorbs lub teeb nrog pom kev xaiv. Piv txwv li, cov keratinocytes nyob rau hauv lub stratum corneum tuaj yeem nqus tau ntau ntawm cov hluav taws xob luv luv ultraviolet (wavelength yog 180 ~ 280nm), thiab cov hlwb spinous hauv txheej spinous thiab melanocytes nyob rau hauv lub basal txheej absorb ntev-yoj ultraviolet rays ( wavelength yog 320nm ~ 400nm). Cov ntaub so ntswg absorbs txawv wavelengths ntawm lub teeb sib txawv, thiab feem ntau ntawm ultraviolet rays yog absorbed los ntawm lub epidermis. Raws li lub wavelength nce, qhov degree ntawm kev nkag mus ntawm lub teeb kuj hloov. Infrared rays nyob ze ntawm lub teeb liab tshuab nkag mus rau hauv cov khaubncaws sab nraud povtseg ntawm daim tawv nqaij, tab sis yog absorbed los ntawm daim tawv nqaij. Qhov ntev-yoj infrared (yav dav yog 15 ~ 400μm) nkag mus tsis zoo, thiab feem ntau nws yog absorbed los ntawm epidermis.
Cov saum toj no yog lub hauv paus theoretical uas tusdaim tawv nqaij analyzertuaj yeem siv los txheeb xyuas cov teeb meem ntawm daim tawv nqaij sib sib zog nqus pigmentation. Covdaim tawv nqaij analyzersiv cov spectra sib txawv (RGB, Hla-polarized lub teeb, Parallel-polarized lub teeb, UV lub teeb thiab Ntoo lub teeb) los tsim cov wavelengths sib txawv kom pom cov teeb meem ntawm daim tawv nqaij los ntawm qhov chaw mus rau txheej tob, yog li wrinkles, kab laug sab leeg, qhov pores loj, qhov chaw saum npoo, tob me ntsis, pigmentation, pigmentation, o, porphyrins thiab lwm yam teeb meem ntawm daim tawv nqaij tuaj yeem kuaj pom los ntawm daim tawv nqaij analyzer.
Post lub sij hawm: Apr-12-2022
