Daim tawv nqaij ib txwm muaj peev xwm nqus tau lub teeb los tiv thaiv cov kab mob thiab cov nqaij hauv lub cev los ntawm kev puas tsuaj ntawm lub teeb. Lub peev xwm ntawm lub teeb nkag mus rau hauv tib neeg cov nqaij yog ze rau nws qhov wavelength thiab cov qauv ntawm cov nqaij tawv nqaij. Feem ntau, qhov luv dua qhov wavelength, qhov tob dua qhov nkag mus rau hauv daim tawv nqaij. Cov nqaij tawv nqaij nqus tau lub teeb nrog kev xaiv pom tseeb. Piv txwv li, cov keratinocytes hauv stratum corneum tuaj yeem nqus tau ntau ntawm cov duab luv luv ultraviolet (wavelength yog 180 ~ 280 nm), thiab cov hlwb spinous hauv txheej spinous thiab melanocytes hauv txheej basal nqus tau cov duab ntev ultraviolet (wavelength yog 320 nm ~ 400 nm). Cov nqaij tawv nqaij nqus tau cov duab sib txawv ntawm lub teeb sib txawv, thiab feem ntau ntawm cov duab ultraviolet raug nqus los ntawm epidermis. Thaum qhov wavelength nce ntxiv, qib ntawm kev nkag mus ntawm lub teeb kuj hloov pauv. Cov duab infrared ze ntawm lub tshuab teeb liab nkag mus rau hauv cov khaubncaws sab nraud povtseg tob tshaj plaws ntawm daim tawv nqaij, tab sis raug nqus los ntawm daim tawv nqaij. Cov duab infrared ntev (wavelength yog 15 ~ 400 μm) nkag mus tsis zoo, thiab feem ntau ntawm nws raug nqus los ntawm epidermis.
Qhov saum toj no yog lub hauv paus theoretical uas covtshuaj ntsuam tawv nqaijsiv tau los nrhiav cov teeb meem pigmentation tob ntawm daim tawv nqaij.tshuaj ntsuam tawv nqaijsiv cov spectra sib txawv (RGB, Cross-polarized light, Parallel-polarized light, UV light thiab Wood's light) los tsim cov wavelengths sib txawv kom pom cov teeb meem ntawm daim tawv nqaij los ntawm qhov chaw mus rau txheej tob dua, yog li wrinkles, kab laug sab veins, qhov hws loj, cov pob ntawm qhov chaw, cov pob tob, pigmentation, pigmentation, o, porphyrins thiab lwm yam teeb meem ntawm daim tawv nqaij tuaj yeem pom los ntawm cov tawv nqaij analyzer.
Lub sijhawm tshaj tawm: Plaub Hlis-12-2022
