1. Cov ntsiab lus kho qhov muag thiab cov chav nyob:
Lub kaum sab xis: Lub kaum sab xis tsim los ntawm ib cheeb tsam ntawm ib tus kheej txheeb ze rau nws qhov chaw yog hu ua lub kaum sab xis. Chav tsev ntawm lub kaum sab xis yog Sr (radian). Lub kaum sab xis txheeb ze ntawm tag nrho tus kheej yog 4π.
Luminous flux: Lub zog hluav taws xob los ntawm lub teeb ci mus rau qhov chaw nyob ib puag ncig hauv chav tsev lub sijhawm thiab ua rau lub zeem muag hu ua luminous flux, sawv cev los ntawm lub cim Φ. Chav tsev yog lumen lm. Nws yog tsuas yog siv los piav txog tag nrho cov kev ua tau zoo ntawm lub teeb los yog lub teeb beam.
Illuminance: Illuminance yog siv los qhia txog lub teeb siv ntawm lub teeb ci ntsa iab (point). Qhov piv ntawm luminous flux mus rau qhov chaw illuminated nto yog hu ua nto illuminance. Kuv yuav siv lub cim E, thiab chav tsev yog lux.
Optical Performance indicators, As yog siv rau kev teeb pom kev zoo.
Luminous siv: Lub luminous flux radiated los ntawm lub teeb qhov chaw nyob rau hauv ib tug tej yam kev taw qhia ntawm qhov chaw nyob rau hauv ib chav tsev lub kaum sab xis yog hu ua lub luminous siv ntawm lub teeb qhov chaw nyob rau hauv cov kev taw qhia. Kuv yuav siv lub cim I, candela CD.
Feem ntau yog siv rau qhov ntsuas qhov ua tau zoo ntawm cov teeb liab teeb liab.
Brightness: Brightness yog hais txog kev siv lub cev kom muaj nuj nqis ntawm lub teeb (reflector) ntawm lub teeb lub cev (reflector). Tib neeg lub qhov muag pom lub teeb ci los ntawm ib qho kev taw qhia, thiab qhov sib piv ntawm lub teeb siv nyob rau hauv qhov kev taw qhia mus rau thaj tsam ntawm lub teeb ci "pom" los ntawm tib neeg lub qhov muag txhais tau tias yog chav tsev ci ntsa iab ntawm lub teeb ci, uas yog, qhov luminous siv ib chav tsev projection cheeb tsam. Chav tsev: nitrate (CD / m2)
Lub teeb ci efficiency:
Lub teeb efficiency hais txog kev ua haujlwm ntawm kev hloov hluav taws xob hluav taws xob mus rau lub teeb lub zog. Chav tsev: lumen / watt lm / W
2. Xim rendering:
Raws li txoj cai, lub teeb ci yuav tsum yog tib yam li lub teeb ntuj, cia tib neeg lub qhov muag kom raug qhov txawv ntawm cov xim ntawm cov khoom, ntawm chav kawm, nyob ntawm qhov chaw thiab lub hom phiaj ntawm lub teeb pom kev zoo. Qhov℃uas lub teeb ci nthuav tawm xim ntawm ib qho khoom hu ua xim rendering. Nws feem ntau hu ua "xim rendering index" (RA).
Xim rendering yog hais txog kev sib raug zoo ntawm cov xim tiag tiag (tus kheej xim) ntawm ib yam khoom thiab cov xim uas pom nyob rau hauv lub teeb pom kev zoo. Tus nqi Ra yog txiav txim siab los ntawm kev sib piv 8 cov xim xeem uas tau teev tseg hauv DIN6169 tus qauv nrog cov qauv teeb pom kev zoo yuav tsum tau kuaj. Qhov me me ntawm cov xim sib txawv, qhov zoo dua cov xim rendering nyhuv ntawm lub teeb qhov chaw raug kuaj. Lub teeb qhov chaw nrog tus nqi Ra ntawm 100 txhais tau hais tias cov xim ntawm cov khoom nyob rau hauv nws lub teeb yog tib yam li cov xim nyob rau hauv ib tug qauv teeb qhov chaw.
3. Xim kub:
Lub teeb liab tsaus, thaum cov khoom dub tau kub rau qee qhov kub, nws pib ci, thiab ntawm qhov kub siab dua cov xim hloov mus rau xim daj / dawb / xiav dawb. Thaum ib yam khoom emits lub teeb ntawm ib qho xim, peb hu nws qhov kub thiab txias ntawm cov xim ntawm cov xim.
