1. Kev txawj ntse
Rau cov ntaub ntawv pob tshab lossis cov ntaub ntawv translucent, cov neeg feem coob muaj lub tswv yim tias qhov siab dua lub teeb xa hluav taws xob thiab qhov qis qis, puas muaj kev sib raug zoo ntawm ob qho tib si?
Tu siab, lub tswv yim no tsis yog lawm!
2. Lub hom phiaj tseeb
Kev sib raug zoo ntawm lub teeb xa hluav taws xob thiab hluav taws xob hawb pob zoo li chaotic, tab sis kuv yuav teb tau zoo heev hais tias tsis muaj kev sib raug zoo ntawm ob, thiab nws kuj yog raws li lub hom phiaj tseeb.
vim li cas?
2.1. Lub teeb transmittance
Lub teeb transmittance characterizes lub teeb transmittance ntawm pob tshab thiab semi-pob tshab khoom. Lub ntsiab tseem ceeb cuam tshuam rau lub teeb xa hluav taws xob yog cov khoom siv qhov kev xav lossis kev nqus ntawm lub teeb hauv cov kab sib txawv wavelength. Qhov ntau dua qhov kev xav lossis kev nqus, qhov me me ntawm lub teeb transmittance.
Transmittance tus nqi Tt=(hloov lub teeb flux / xwm txheej lub teeb flux) * 100 feem pua
Kev xa tawm yog yooj yim to taub thiab yuav tsis rov ua dua.
2.2 ,hlo
Lub haze characterizes lub xeev tsis xwm yeem ntawm turbidity ntawm pob tshab thiab translucent cov ntaub ntawv. Lub ntsiab yam tseem ceeb cuam tshuam rau qhov kub hnyiab yog qhov cuam tshuam ntawm cov khoom siv sab hauv, kev taw qhia ntawm cov impurities sab nraud, thiab kev sib txhuam ntawm qhov chaw thiab hnav.
* Internal structural defects, kev taw qhia ntawm lwm impurities, nto kev sib txhuam thiab hnav, thiab lwm yam nyob rau hauv thiaj li hais tias tag nrho cov kis tau tus mob luminous flux obviously nthuav tawm ob feem ntawm parallel kis luminous flux Tp thiab tawg pleb flux Td;
* Cov kab sib txuas sib txuas luminous flux Tp yog nyob rau ntawm txoj kab ncaj nraim nrog lub teeb pom kev, nruj me ntsis hais lus, lub luminous flux nyob rau hauv ib nrab lub kaum sab xis ntawm 2.5 degree, thiab qhov ntau tshaj li ib nrab-lub kaum sab xis 2.5 degree yog hu ua astigmatic kis lub teeb flux Td ;
* Qhov pom tseeb ntau yam xws li kev teeb tsa sab hauv, kev taw qhia ntawm cov impurities sab nraud, kev sib txhuam ntawm qhov chaw thiab hnav, thiab lwm yam, qhov ntau dua tus nqi ntawm lub teeb kis tau los ntawm Td, qhov ntau dua qhov haze muaj nqis.
Haze value Haze=(scattered transmitted luminous flux/tag nrho transmitted luminous flux)* 100 feem pua
Los yog, Haze=(Td/Tt)*100 feem pua
Qee tus neeg ntawm no yuav hais tias qhov siab dua lub teeb xa hluav taws xob ntawm Tt, uas yog, qhov loj dua tus lej, qhov qis dua tus nqi haze. Kuv xav ceeb toom rau koj hauv kev ntseeg zoo, tsis txhob las mees lub luag haujlwm tseem ceeb ntawm kev sib kis Td!
2.3. Tus lej piv txwv ntawm transmittance haze
* Qhov xwm txheej luminous flux yog 100 units, tag nrho kis tau tus mob luminous flux yog 90 units, thiab transmittance yog 90 feem pua.
Scatter kis tau tus mob 10 units, parallel kis tau tus mob 80 units, haze value 10/90=11.1 (%) -- high kis thiab low haze
Scatter kis tau tus mob 80 units, parallel kis tau tus mob 10 units, haze value 80/90=88.9 (%)--siab transmittance thiab siab haze
* Qhov xwm txheej luminous flux yog 100 units, tag nrho cov kis luminous flux yog 20 units, thiab transmittance yog 20 feem pua.
Scatter transmission 2 units, parallel transmission 18 units, haze value 2/20=10 (feem pua )-- kis tau tus mob tsawg thiab haze tsawg
Scatter transmission 18 units, parallel transmission 2 units, haze value 18/20=90 (%) -- tsis tshua muaj kis tau tus mob thiab haze siab
Haze tsis muaj dab tsi ua nrog transmittance!
Hauv cov ntsiab lus, huab cua thiab kev xa tawm tsis muaj dab tsi ua!
Covhaze thiab transmittanceyog ntsuas nrog transmittance haze meter. GBPI muab cov kev daws teeb meem haze transmittance zoo tshaj plaws, kev pabcuam kev tshaj lij, thiab kev vam meej!
