Ngenxa yomthelela omkhulu wendawo yokukhanyisa empilweni yabantu, i-photohealth, njengenkambu emisha embonini enkulu yezempilo, iya ngokuya igqama futhi isiphenduke imakethe evela emhlabeni wonke. Imikhiqizo yezempilo ekhanyayo isetshenziswe kancane kancane emikhakheni ehlukahlukene njengokukhanyisa, ukunakekelwa kwezempilo, ukunakekelwa kwezokwelapha, kanye nezinsizakalo. Phakathi kwazo, ukukhuthaza "ukukhanyisa okunempilo" ukuthuthukisa ikhwalithi yokukhanya nokunethezeka kunokubaluleka okusebenzayo okubalulekile, ngosayizi wemakethe ongaphezu kwethriliyoni eyodwa ye-yuan.
I-spectrum egcwele isho ukulingisa i-spectrum yokukhanya kwemvelo (ngezinga lokushisa lombala ofanayo) nokususa imisebe ye-ultraviolet eyingozi kanye ne-infrared ekukhanyeni kwemvelo. Uma kuqhathaniswa nokukhanya kwemvelo, ubuqotho be-spectrum egcwele buseduze nokufana kwe-spectrum yokukhanya kwemvelo. I-LED ye-spectrum egcwele inciphisa ukukhanya okuluhlaza okwesibhakabhaka uma kuqhathaniswa ne-LED evamile, ithuthukisa ukuqhubeka kwebhendi yokukhanya ebonakalayo, futhi ithuthukisa ngempumelelo ikhwalithi yokukhanyisa kwe-LED. Ithiyori eyinhloko yezempilo yokukhanya iwukuthi "ukukhanya kwelanga ukukhanya okunempilo kakhulu", futhi ubuchwepheshe bayo obuthathu obuyisisekelo buyinhlanganisela ephumelelayo yekhodi yokukhanya, ifomula yokukhanya, nokulawula ukukhanya, okuvumela ukuboniswa kwezinzuzo ezifana nokugcwala kombala, ukukhiqizwa kombala, nokukhanya okuluhlaza okwesibhakabhaka okuphansi ezigcawini ezikhanyayo. Ngokusekelwe kulezi zinzuzo, i-LED ye-spectrum egcwele ngokungangabazeki iwumthombo wokukhanya wokwenziwa ofaneleka kakhulu wezidingo "zezempilo ezilula" okwamanje.
Okubaluleke nakakhulu, impilo ekhanyayo ingaphinda ichaze ukukhanya okugcwele kwe-spectrum. Nakuba i-spectrum egcwele esixoxa ngayo njengamanje emkhakheni wokukhanyisa kwe-LED ikakhulukazi ibhekisela kububanzi obugcwele bokukhanya okubonakalayo, okusho ukuthi ingxenye yengxenye ngayinye yamaza ekukhanyeni okubonakalayo iyafana neyokukhanya kwelanga, kanye nenkomba enikeza umbala ukukhanya kokukhanya kuseduze nokukhanya kwelanga. Ngokuthuthuka okuqhubekayo kobuchwepheshe kanye nesidingo semakethe, isiqondiso sokuthuthukiswa kwesikhathi esizayo se-LED ye-spectrum egcwele nakanjani kufanele ihambisane nokukhanya kwelanga, okuhlanganisa inhlanganisela ye-spectra yokukhanya engabonakali. Ngeke isetshenziswe kuphela ekukhanyeni, kodwa futhi emkhakheni wezempilo okhanyayo, futhi ingasetshenziswa kabanzi emikhakheni efana nempilo elula kanye nemithi elula.

Izibani ze-LED ze-spectrum ezigcwele zifaneleka kakhulu izigcawu ezidinga ukumelwa kombala okunembile. Uma kuqhathaniswa nama-LED ajwayelekile, ama-LED e-spectrum agcwele anohlu olubanzi lwamathemba ohlelo lokusebenza. Ngaphezu kokusetshenziswa ekukhanyisweni kokufundisa, amalambu etafula okuvikela amehlo, nokukhanyisa kwasekhaya, angasetshenziswa nasezindaweni ezidinga ikhwalithi ephezulu yokubona, njengezibani zokuhlinza, izibani zokuvikela amehlo, izibani zasemnyuziyamu, nokukhanyisa kwendawo ephezulu. Kodwa-ke, ngemva kweminyaka yokulima emakethe, izinkampani eziningi ziye zangena ekukhanyeni okugcwele kwezempilo, kodwa ukuthandwa kwemakethe kokukhanya okugcwele kwe-spectrum akukabi phezulu, futhi ukukhushulwa kusenzima. Kungani?
Ngakolunye uhlangothi, ubuchwepheshe obugcwele be-spectrum buwubuchwepheshe obuyinhloko bokufaka isicelo sokukhanyisa impilo, futhi izinkampani eziningi zibuthatha njenge-"BMW". Intengo yayo ayithengeki futhi kunzima kubathengi abaningi ukwamukela. Ikakhulukazi, imakethe yokukhanyisa yamanje inekhwalithi yomkhiqizo engalingani kanye namanani ahlukahlukene, okwenza kube nzima kubathengi ukuhlukanisa nokuthonywa kalula amanani. Ngakolunye uhlangothi, ukuthuthukiswa kwemboni yokukhanyisa okunempilo kuye kwahamba kancane, futhi imboni ekhuthazwa emakethe isengakavuthwa.
Njengamanje, i-LED egcwele ye-spectrum isesesiteji esikhulayo, njengoba izindleko zayo ziphakeme okwesikhashana kune-LED evamile, futhi ngenxa yemingcele yamanani, isabelo semakethe se-LED egcwele emakethe yokukhanyisa sincane kakhulu. Kodwa ngokuthuthukiswa kobuchwepheshe kanye nokuthandwa kokuqwashisa ngezibani zezempilo, kukholakala ukuthi abasebenzisi abaningi bazoqaphela ukubaluleka kwekhwalithi yokukhanya kwemikhiqizo yokukhanyisa egcwele, futhi isabelo sabo semakethe sizokhula ngokushesha. Ngaphezu kwalokho, uhlelo lokukhanyisa oluhlanganisa i-spectrum egcwele ye-LED nokulawula okuhlakaniphile lungasetshenziswa kangcono ezimweni ezihlukahlukene, lusebenzise ngokugcwele izinzuzo ze-spectrum egcwele ye-LED ekuthuthukiseni izinga lokukhanyisa nokuthuthukisa ukuqashelwa kwabantu kokunethezeka kokukhanya.