1. Ruminous flux:
Simba rinobudiswa nechitubu chechiedza munzvimbo yakapoteredza panguva yeyuniti uye kukonzera maonero ekuona anonzi luminous flux Φ Inomiririrwa mu lumens (Lm).
2. Kusimba kwechiedza:
Kupenya kunopenya kunovhenekerwa nechiedza munzira yakati mukati mechikamu chakasimba chekona inodaidzwa kuti kupenya kwechiedza chechiedza munzira iyoyo, inodaidzwa kunzi light intensity kwenguva pfupi.Inomiririrwa nechiratidzo Ini, mu candela (Cd), I = Φ/ W .
3. Kuvhenekera:
Iyo inopenya inoyerera inogamuchirwa payuniti plane nzira inonzi illuminance, inoratidzwa muE, uye iyo unit ndeye lux (Lx), E = Φ/ S .
4. Kupenya:
Kupenya kwakajeka kwechiedza pane iyo unit projection nzvimbo mune yakapihwa gwara kunonzi kupenya, uko kunoratidzwa muL, uye iyo unit ndeye candela pa square mita (Cd/m).
5. Tembiricha yemavara:
Kana ruvara rwunobudiswa nechiedza rikafanana neruvara rwunobudiswa neblackbody richidziiswa kune imwe tembiricha, inodanwa kunzi tembiricha yeruvara rwechiedza, ichidimburirwa setembiricha yeruvara.
Iyo yakananga kutendeuka hukama hwe LED lighting unit mutengo
Iyo inopenya inoyerera ye1 lux = 1 lumen inogoverwa zvakaenzana pamusoro penzvimbo ye 1 square mita.
1 lumen=luminous flux inoburitswa nepoint light source ine kupenya kwakanyanya kwekenduru 1 muyuniti yakasimba kona.
1 lux=kupenya kunogadzirwa nechiedza chepoindi chine kupenya kwekenduru 1 pabhora rine radius yemamita 1.