Igipimo cy’ubuvuzi bworoheje kibarwa hakoreshejwe iyi formula:
Ubucucike bw'ingufu x Igihe = Igipimo
Ku bw'amahirwe, ubushakashatsi buheruka bukoresha ibice bisanzwe mu gusobanura protocole yabyo:
Ubucucike bw'ingufu muri mW/cm² (milliwatts kuri santimetero kare)
Igihe muri s (amasegonda)
Igipimo muri J/cm² (Joule kuri santimetero kare)
Ku bijyanye no kuvura urumuri mu rugo, ubucucike bw'ingufu ni cyo kintu cy'ingenzi ugomba kumenya - niba utabizi, ntuzamenya igihe ugomba gukoresha igikoresho cyawe kugira ngo ugere ku gipimo runaka. Ni igipimo cy'ubukana bw'urumuri (cyangwa umubare w'amafotoni ari mu gace runaka).
Hamwe na za LED zisohoka zifite inguni, urumuri rugenda rukwirakwira uko rugenda, rutwikira agace kanini kandi kanini. Ibi bivuze ko ubukana bw'urumuri ahantu hose bugenda bugabanuka uko intera iri hagati y'aho ruturuka yiyongera. Itandukaniro ry'inguni z'imirasire kuri za LED naryo rigira ingaruka ku bucucike bw'ingufu. Urugero, LED ya 3w/10° izagaragaza ubucucike bw'ingufu z'urumuri kure kurusha LED ya 3w/120°, izagaragaza urumuri rudakomeye mu gace kanini.
Inyigo zo kuvura hakoreshejwe amashanyarazi yoroheje zikoresha ubucucike bw'amashanyarazi buri kuri ~ 10mW/cm² kugeza kuri ~ 200mW/cm².
Ingano ni ukukubwira gusa igihe ubwo bucucike bw'ingufu bwakoreshejwe. Ubukana bw'urumuri rwinshi bivuze ko hakenewe igihe gito cyo kuyikoresha:
5mW/cm² ikoreshejwe mu masegonda 200 itanga 1J/cm².
20mW/cm² ikoreshejwe mu masegonda 50 itanga 1J/cm².
100mW/cm² ikoreshejwe mu masegonda 10 itanga 1J/cm².
Ibi bipimo bya mW/cm² n'amasegonda bitanga umusaruro muri mJ/cm² - ukubye inshuro 0.001 kugira ngo ubone J/cm². Bityo rero, formula yuzuye, ukurikije ibipimo bisanzwe ni iyi:
Igipimo = Ubucucike bw'ingufu x Igihe x 0.001