1. Luminous flux:
Lub zog tawm los ntawm lub teeb ci mus rau qhov chaw nyob ib puag ncig ib lub sijhawm thiab ua rau pom kev pom yog hu ua luminous flux Φ Sawv cev hauv lumens (Lm).
2. Lub teeb siv:
Lub luminous flux radiated los ntawm lub teeb qhov chaw nyob rau hauv ib qho kev taw qhia nyob rau hauv ib tug unit khoom lub kaum sab xis yog hu ua lub luminous siv ntawm lub teeb qhov chaw nyob rau hauv cov kev taw qhia, uas yog hu ua lub teeb siv luv luv.Sawv cev los ntawm lub cim I, hauv candela (Cd), I = Φ / W.
3. Iluminance:
Lub luminous flux txais nyob rau hauv chav tsev dav hlau txoj kev hu ua illuminance, qhia hauv E, thiab chav tsev yog lux (Lx), E = Φ / S.
4. Brightness:
Lub luminous siv ntawm lub illuminant ntawm chav tsev projection cheeb tsam nyob rau hauv lub muab kev coj yog hu ua brightness, uas yog qhia nyob rau hauv L, thiab chav tsev yog candela ib square meter (Cd / m).
5. Xim kub:
Thaum cov xim emissions los ntawm lub teeb ci yog tib yam li cov xim emitted los ntawm ib tug blackbody rhuab mus rau ib tug tej yam kub, nws yog hu ua xim kub ntawm lub teeb qhov chaw, abbreviated raws li cov xim kub.
Qhov ncaj qha kev sib raug zoo ntawm LED teeb pom kev zoo chav tsev nqi
Lub luminous flux ntawm 1 lux = 1 lumen yog sib npaug ntawm thaj tsam ntawm 1 square meter
1 lumen = luminous flux emitted los ntawm lub teeb qhov chaw nrog luminous siv 1 tswm ciab nyob rau hauv chav tsev khoom lub kaum ntse ntse
1 lux = illuminance generated los ntawm ib tug taw tes lub teeb qhov chaw nrog luminous siv ntawm 1 tswm ciab ntawm ib tug kheej kheej nrog ib tug vojvoog ntawm 1 meter