Nruab nrab illuminance (Eav)=luminous flux ntawm ib lub teeb × naj npawb ntawm cov teeb (N) × qhov chaw siv coefficient (CU) × tu coefficient (K) ÷ pem teb cheeb tsam (ntev × dav)
Daim ntawv piav qhia:
1. Lub luminous flux Φ ntawm ib lub teeb yog hais txog tag nrho cov luminous flux tus nqi ntawm lub teeb liab qab ntawm lub teeb ci muaj nyob hauv lub teeb.
2. Qhov chaw siv coefficient (CU) yog hais txog qhov feem pua ntawm cov teeb pom kev zoo tawm ntawm lub teeb pom kev zoo uas ncav cuag hauv pem teb thiab chaw ua haujlwm, yog li nws muaj feem xyuam rau kev tsim, kev teeb tsa qhov siab, chav tsev loj thiab qhov cuam tshuam ntawm lub teeb pom kev zoo. Tus nqi kuj hloov raws li. Piv txwv li, thaum lub teeb vaj huam sib luag siv nyob rau hauv qhov chaw siab txog 3 meters, nws qhov kev siv CU tuaj yeem nyob nruab nrab ntawm 0.6-0.75; thiab thaum lub txhuas npog ntawm lub teeb raug tshem tawm thiab qhov chaw siab yog 6-10 meters, nws qhov kev siv CU tuaj yeem nyob rau hauv qhov ntau ntawm 0.7- -0.45; Thaum cov teeb pom kev zoo siv hauv qhov chaw ntawm li 3 meters, qhov kev siv CU tuaj yeem siv tau {{10}}.4--0.55; thiab thaum lub teeb xws li lub teeb sawb siv rau hauv qhov chaw ntawm li 4 meters, qhov kev siv coefficient CU tuaj yeem siv 0.3--0.5 . Cov ntaub ntawv saum toj no yog cov txiaj ntsig empirical thiab tsuas yog siv tau rau kev kwv yees ntxhib xwb. Yog tias koj xav kom xam cov nqi tshwj xeeb, koj yuav tsum tau muab lub tuam txhab sau ntawv. Cov tsis muaj feem cuam tshuam nyob ntawm no rau kev siv nkaus xwb.
3. Nws txhais tau hais tias nrog kev laus ntawm cov teeb pom kev zoo, lub teeb pom kev muaj peev xwm ntawm cov teeb pom kev zoo txo qis thiab lub sij hawm siv cov teeb pom kev zoo nce ntxiv, thiab lub teeb pom kev puas tsuaj; los yog vim muaj cov plua plav nyob hauv chav tsev, qhov chaw pom kev ua haujlwm tau txo qis, uas ua rau txo qis hauv illuminance. Coefficient. Feem ntau huv si, xws li chav nyob, chav pw, chaw ua hauj lwm, chav kawm ntawv, chav nyeem ntawv, tsev kho mob, high-end khw muag khoom, art galleries, tsev cia puav pheej, thiab lwm yam., cov coefficient ntawm tu K yog 0.8; thaum lub khw muag khoom, khw muag khoom loj, chaw ua lag luam, chaw ua yeeb yam Kev saib xyuas coefficient K ntawm qhov chaw xws li machining rhiav thiab chaw nres tsheb yog 0.7; thiab kev saib xyuas coefficient K ntawm qhov chaw uas muaj qhov ua kom muaj kuab paug loj dua tuaj yeem raug coj los ua txog 0.6.
