Letlalo le tloaelehileng le na le bokhoni ba ho monya leseli ho sireletsa litho le lisele tsa 'mele ho senyeha ha leseli. Bokhoni ba leseli ho kena liseleng tsa motho bo amana haufi-ufi le bolelele ba maqhubu a lona le sebopeho sa lisele tsa letlalo. Ka kakaretso, ha bolelele ba maqhubu bo le khuts'oane, ho kenella ka har'a letlalo ho sa teba. Letlalo la letlalo le nka leseli ka khetho e totobetseng. Ka mohlala, li-keratinocyte tse ka har'a stratum corneum li ka khona ho monya mahlaseli a mangata a makhutšoane a mahlaseli a kotsi (wavelength ke 180 ~ 280nm), 'me lisele tsa spinous tse ka har'a lesapo la mokokotlo le melanocyte e karolong ea basal e monya mahlaseli a nako e telele a mahlaseli a kotsi. wavelength ke 320 nm ~ 400nm). Letlalo le monya maqhubu a fapaneng a khanya ka tsela e fapaneng, 'me mahlaseli a mangata a ultraviolet a monngoa ke epidermis. Ha leqhubu le ntse le eketseha, tekanyo ea ho kenella ha leseli le eona ea fetoha. Mahlaseli a infrared haufi le mochini o khanyang o mofubelu a phunyeletsa ka har'a letlalo le tebileng, empa a monngoa ke letlalo. Leqhubu le lelelele la infrared (botelele ba maqhubu ke 15 ~ 400μm) le phunyeletsa hampe haholo, 'me boholo ba lona le kenngoa ke epidermis.
E ka holimo ke theoretical motheo oa hore theletlalo analyzere ka sebelisoa ho bona mathata a tebileng a letlalo. Theletlalo analyzere sebelisa li-spectra tse fapaneng (RGB, lebone la Cross-polarized, lebone le Parallel-polarized, lebone la UV le lebone la Wood) ho theha maqhubu a fapaneng a maqhubu ho fumana mathata a letlalo ho tloha holimo ho isa karolong e tebileng, ka hona wrinkles, methapo ea sekho, li-pores tse kholo, matheba a holimo, matheba a tebileng, mabala a mebala, mebala, ho ruruha, porphyrins le mathata a mang a letlalo a ka bonoa ke mohlahlobi oa letlalo.
Nako ea poso: Apr-12-2022
