Isikhumba esivamile sinamandla okumunca ukukhanya ukuze sivikele izitho nezicubu emzimbeni ekulimaleni okukhanyayo. Ikhono lokukhanya lokungena kwezicubu zomuntu lihlobene eduze nobude balo kanye nokwakheka kwezicubu zesikhumba. Ngokuvamile, lapho ubude begagasi bufushane, ukungena kwesikhumba kuyancipha. Izicubu zesikhumba zithatha ukukhanya ngokukhetha okusobala. Isibonelo, ama-keratinocyte ku-stratum corneum angakwazi ukumunca inani elikhulu lemisebe ye-ultraviolet yamagagasi amafushane (ubude begagasi bungu-180 ~ 280nm), futhi amangqamuzana asobhoko kungqimba oluyi-spinous kanye nama-melanocyte kungqimba lwe-basal amunca imisebe ye-ultraviolet yamaza amade (long-wave ultraviolet). ubude begagasi bungu-320 nm ~ 400nm). Izicubu zesikhumba zimunca amaza okukhanya ahlukene ngokuhlukile, futhi iningi lemisebe ye-ultraviolet imuncwa i-epidermis. Njengoba i-wavelength ikhula, izinga lokungena kokukhanya nalo liyashintsha. Imisebe ye-infrared eduze komshini wokukhanya okubomvu ingena ezingqimbeni ezijulile zesikhumba, kodwa imuncwa isikhumba. I-infrared yamagagasi amade (ubude begagasi buyi-15~400μm) ingena kabi kakhulu, futhi iningi layo limuncwa i-epidermis.
Lokhu okungenhla kuyisisekelo sethiyori sokuthi iisikhumba analyzeringasetshenziswa ukuthola izinkinga ezijulile zesikhumba. Iisikhumba analyzerisebenzisa i-spectra ehlukene (i-RGB, ukukhanya kwe-Cross-polarized, ukukhanya kwe-Parallel-polarized, ukukhanya kwe-UV kanye nokukhanya kwe-Wood) ukudala amaza amaza ahlukene ukuze kutholwe izinkinga zesikhumba kusuka phezulu kuya ongqimbeni olujulile, ngakho imibimbi, imithambo yesicabucabu, izimbotshana ezinkulu, izindawo ezingaphezulu, izindawo ezijulile, umbala wombala, umbala, ukuvuvukala, ama-porphyrins nezinye izinkinga zesikhumba konke kungatholwa ngohlaziyo lwesikhumba.
Isikhathi sokuthumela: Apr-12-2022
