Xav tias muaj ntau yam khoom nyob rau hauv kev ua lag luam, uas zoo nkaus li zoo sib xws thiab nws yog ib qho nyuaj rau cov neeg muas zaub xaiv qhov twg yog qhov zoo tshaj plaws, peb xav ua ib tug luv luv phau ntawv qhia rau cov tsis tseem ceeb ntawm cov teeb thiab fixtures.
Luminous efficiency - qhov piv ntawm luminous flux (lumen [lm]) ntawm qhov tshwj xeeb lub teeb rau lub hwj chim (watts [W]), uas yog noj thaum lub sij hawm ua hauj lwm. Nws yog lub zog ua haujlwm ntawm lub teeb ci, qhov siab dua, qhov ntau lub teeb peb tawm ntawm 1 watt. Nws tsis coj mus rau hauv tus account qhov zoo ntawm lub teeb, tsuas yog nws kom muaj nuj nqis.
Lub theoretical siab tshaj tus nqi ntawm luminous efficiency yog 683 lm / W rau lub teeb ntawm ib xim (monochrome) - nyob rau hauv cov ntaub ntawv no, nws yog ib tug ntsuab teeb nrog ib tug electromagnetic yoj ntev ntawm 555 nm.
Peb qhia txog kev ua tau zoo ntawm Lumens / Wat - lm / W.
Piv txwv lub teeb pom kev zoo ntawm ntau qhov chaw ntawm lub teeb (ua ke nrog txoj kev tsim lub teeb):
Lub teeb-emitting diodes:
• Dawb LED diode (electroluminescence) – 80 – 300 lm/W
Cov peev txheej kub:
• Ib txwm teeb lub teeb (incandescence) – 8 – 12 lm/W
• Halogen noob (incandescence) – 12 – 16 lm/W
Fluorescent qhov chaw:
• linear fluorescent teeb (photoluminescence) – 45 – 100 lm/W
• Compact fluorescent teeb (photoluminescence) – 50 – 70 lm/W
• Induction Teeb (photoluminescence) – 60 – 90 lm/W
Cov ntaub ntawv pov thawj:
• Hlau halide teeb (electroluminescence) - 65 - 115 lm / W
• Lub teeb siab sodium teeb (electroluminescence) - 85 - 150 lm / W
• Lub teeb hluav taws xob qis sodium (electroluminescence) - 100 - 200 lm / W
