Ubuninzi bamandla okukhanya okuvela kuyo nayiphi na isixhobo sonyango lwe-LED okanye lwe-laser bunokuvavanywa nge-'solar power meter' - imveliso edla ngokuba novakalelo ekukhanyeni okukuluhlu lwe-400nm - 1100nm - enika ukufundwa kwi-mW/cm² okanye kwi-W/m² (100W/m² = 10mW/cm²).
Ngesixhobo sokulinganisa amandla elanga kunye nerula, ungalinganisa uxinano lwamandla okukhanya kwakho ngomgama.
Ungavavanya nayiphi na i-LED okanye i-laser ukuze ufumane ubuninzi bamandla kwindawo ethile. Izibane ezipheleleyo ezifana nee-incandescents kunye nezibane zobushushu azinakuvavanywa ngale ndlela ngelishwa kuba uninzi lwemveliso alukho kuluhlu olufanelekileyo lonyango lokukhanya, ngoko ke ukufundwa kuya kunyuswa. Ii-Laser kunye nee-LED zinika ukufundwa okuchanekileyo kuba zikhupha kuphela ubude be-wavelength +/-20 bobude be-wavelength bazo obuchaziweyo. Iimitha zamandla 'zelanga' ngokucacileyo zenzelwe ukulinganisa ukukhanya kwelanga, ngoko ke azilungiswanga ngokugqibeleleyo ukulinganisa ubude be-wavelength enye ukukhanya kwe-LED - ukufundwa kuya kuba ngumfanekiso we-ballpark kodwa kuchanekile ngokwaneleyo. Kukho iimitha zokukhanya ze-LED ezichanekileyo (kwaye zibiza kakhulu).