Mayelana ne-Spectrum Yomshini Wokuhlaziya Isikhumba

Imithombo yokukhanya ihlukaniswe yaba ukukhanya okubonakalayo nokukhanya okungabonakali. Umthombo wokukhanya osetshenziswa yi-isikhumba analyzerumshini empeleni uyizinhlobo ezimbili, eyodwa ukukhanya kwemvelo (RGB) kanti enye ukukhanya kwe-UVA. Lapho ukukhanya kwe-RGB + i-polarizer ehambisanayo, ungathatha isithombe sokukhanya esihambisanayo; lapho ukukhanya kwe-RGB + kunqamula i-polarizer, ungathatha isithombe sokukhanya esiphambanayo. Ukukhanya kukaWood nakho kuwuhlobo lokukhanya kwe-UV.

Umgomo kanye nomsebenzisyezinhlobo ezi-3 ze-spectrum

I-parallel polarized lightumthombo ungaqinisa ukubonakaliswa okukhethekile futhi wenze buthaka ukubonakaliswa okusabalele; umphumela we-specular reflection ubonakala kakhulu ebusweni besikhumba ngenxa yamafutha angaphezulu, ngakho-ke kumodi yokukhanya ehambisanayo ye-polarized, kulula ukubuka izinkinga zesikhumba ngaphandle kokuphazanyiswa ukukhanya okujulile okubonakalayo okubanzi. Ngokuyinhloko isetshenziselwa ukubuka imigqa emihle, ama-pores, amabala, njll ebusweni besikhumba.

I-cukukhanya kwe-ross-polarizedingagqamisa ukubonakaliswa okusabalele futhi isuse ukubonakaliswa okukhethekile. Kumodi yokukhanya kwe-cross-polarized, ukuphazamiseka kokukhanya kwe-specular reflection endaweni yesikhumba kungahlungwa ngokuphelele, futhi ukukhanya okukhanyayo okusabalalisa ezingxenyeni ezijulile zesikhumba kungabonwa. Ngakho-ke, izithombe ezikhanyayo ze-cross-polarized zingasetshenziswa ukubuka ukuzwela, ukuvuvukala, ububomvu kanye ne-pigment engaphezulu ngaphansi kwesikhumba, kufaka phakathi izimpawu ze-acne, amabala, ukushiswa yilanga, njll.

Isibani se-UVesetshenziswa yiisikhumba analyzerumshini uwumthombo wokukhanya we-UVA (wavelength 320~400nm) onamandla aphansi kodwa amandla angena ngamandla. Umthombo wokukhanya we-UVA ungangena kungqimba lwe-dermis, ngakho-ke ungasetshenziswa ukubuka izindawo ezijulile kanye ne-dermatitis ejulile; ngasikhathi sinye, ngenxa yokuthi ukukhanya kwe-UV kubuye kube igagasi kagesi futhi kunokuguquguquka, ama-harmonics azokwenzeka lapho ubude begagasi bemisebe yento buhambisana nobude begagasi bemisebe ye-ultraviolet ekhanyiswa phezu kwayo. Igagasi liyaduma, lidala ubude begagasi obusha bokukhanya okuthi, uma bubonakala ngeso lomuntu, lubanjwe umshini wokuhlaziya isikhumba. Ngokusekelwe kulesi simiso, ama-porphyrins, izinsalela ze-fluorescent, amahomoni nezinye izinto esikhumbeni zingabonwa. Ukuhlanganiswa kwePropionibacterium kucace kakhulu ngaphansi kwemodi yokukhanya ye-Wood.

Kungani i-spectra yezinga eliphezuluama-analzyers esikhumbaangaphansi kwamamodeli ashibhile?

Abahlaziyi besikhumba abasezingeni eliphezulu (ISEMECO, RESUR) banezinhlobo ezi-3 kuphela ze-spectrum: i-RGB, ukukhanya kwe-cross-polarized, nokukhanya kwe-UV;

II-MEICET MC88futhiI-MC10amamodeli anezinhlobo ezi-5 ze-spectrum: i-RGB, ukukhanya kwe-polarized parallel, ukukhanya kwe-polarized cross, ukukhanya kwe-UV (365nm), nokukhanya kwe-Wood (365+402nm);

Imodeli yobungcweti yamukela ikhamera ye-SLR esezingeni eliphezulu, futhi izithombe ezithathiwe zicace ngokwanele, ukuze ukwazi ukubona izinkinga ebusweni besikhumba: izimbotshana, imigqa emihle, amabala, njll. Ngendlela efanayo, ngenxa yokuthi isithombe sokukhanya kwe-UV sicace ngokwanele, akusadingeki ukwengeza ukukhanya kuka-Wood ukuze uhlole iqembu le-Propionibacterium.

Ngoba iMC88futhiI-MC10imodeli isebenzisa ikhamera eza ne-iPad, amaphikseli awafani naleyo yekhamera ye-SLR echwepheshile, ngakho ukukhanya okuhlukanisiwe kuyadingeka ukuze kuthuthukiswe ukukhanya okukhethekile kwendawo yesikhumba ukuze kubonwe izimbotshana, imigqa emihle, amabala nezinye izinkinga. Ukwengeza ukukhanya kuka-Wood kungenza iqembu le-Propionibacterium liboniswe ngokucacile.