IESNA Kev faib tawm ntawm LED teeb faib:
IESNA faib lub teeb faib los ntawm LED qhov chaw raws li cov duab ntawm thaj chaw uas tau teeb pom kev zoo los ntawm kev teeb tsa.
Hom I: Lub LED yuav muaj ob txoj kev faib tawm ntawm lub teeb, nrog ob lub teeb ci ntsa iab uas ci ntsa iab nyob rau sab nraud. Lub teeb yuav muaj lub kaum sab xis ntawm 15 degree. Nws yog qhov zoo tagnrho rau kev teeb pom kev taug kev thiab kev taug kev.
Hom II: Lub LED yuav muaj qhov dav dav dav ntawm ob lub teeb ci ntsa iab. Feem ntau, lub teeb yuav muaj lub kaum sab xis ntawm 25 degree. Nws yog qhov zoo tshaj plaws rau kev teeb pom kev dav ntawm txoj kev taug kev lossis txoj kev nkag.
Hom III: Lub LED yuav muaj qhov dav dav dav ntawm ob lub teeb ci ntsa iab. Feem ntau, hom III LED teeb faib yuav muaj lub kaum sab xis ntawm 40 degree. Nws yog qhov zoo heev rau kev teeb pom kev dav dav thiab chaw nres tsheb illumination.
Hom IV: Lub LED yuav muaj qhov dav dav dav ntawm ob lub teeb ci ntsa iab. Feem ntau, hom LED teeb faib no yuav muaj lub kaum sab xis ntawm 90 degree - 270 degree . Nws yog qhov zoo heev rau kev teeb pom kev thaj tsam ntawm cov chaw nres tsheb thiab chaw ua lag luam.
Hom V: Lub teeb ci LED yuav muaj lub teeb ci ncig. Hom kev faib tawm no yuav muaj lub kaum sab xis ntawm 360 degree. Nws yog qhov zoo tshaj plaws rau siv nyob rau hauv qhov chaw nruab nrab ntawm qhov chaw nres tsheb, lossis kev sib tshuam ntawm txoj kev.
Hom VI: Lub teeb LED yuav muaj lub teeb faib square. Hom kev faib tawm no yuav muaj lub kaum sab xis ntawm 360 degree. Nws yog qhov zoo tshaj plaws rau siv nyob rau hauv qhov chaw nruab nrab ntawm qhov chaw nres tsheb, lossis kev sib tshuam ntawm txoj kev. Contrary to type V, VS tis muab ntau txhais ntug rau ib cheeb tsam teeb pom kev zoo qauv.
