Kuv tau sau cov lus qhia yooj yim txog lub illuminometer
Tib neeg thiab txhua yam muaj sia nyob hauv lub ntiaj teb ntawm qhov kaj, yam tsis muaj kev ua neej nyob yuav tsum tso tseg. Nyob rau hauv kev xyaum ntawm reusing tej yam ntuj tso lub teeb qhov chaw thiab inventing cov khoom tsim teeb pom kev zoo, tib neeg lossi koom nrog cov txheeb ze sib piv ntawm luminosity. Photometry muaj ntau yam kev siv hauv lub neej txhua hnub. Yog li ntawd, manufacturers tau tsim ntau yam photometers, nrog rau illuminometers.
Illuminometer (tseem hu ua Lexometer) yog qhov tsis siv neeg luam ntawv fiber ntau optic kho qhov muag ntsuas ntsuas ntsuas qhov siv ntawm lub teeb ci thiab ntuj tsim. Nws daws qhov teeb meem ntawm kev ntsuas tsis tu ncua ntawm lub teeb siv thiab tsis siv neeg kaw. Nws yog tsim los ntawm photodetector, ib qho kev hloov pauv tsis siv neeg lub voj voog, lub kaw lus nkhaus, lub tshuab luam ntawv digital, thiab cov khoom siv tam sim no digital. Lub nkhaus kaw cov cuab yeej siv lub fiber optic frictionless kaw txoj kev, thiab lub photodetector yog tsim los ntawm ib tug lim thiab ib tug xiav silicon photocell, thiaj li hais tias cov pom spectrum teb nkhaus conforms rau tib neeg pom spectrum nkhaus tau teev tseg los ntawm International Commission on Illumination (CIE) .
Lub hauv paus ntsiab lus ntawm kev ntsuam xyuas ntawm lub illuminometer yog ib qho khoom siv hluav taws xob uas ncaj qha hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob. Illuminance yog qhov ntom ntom ntawm cov luminous flux tau txais ntawm lub dav hlau illuminated. Illuminometer yog siv los ntsuas qhov kev siv ntawm lub teeb (illuminance), uas yog qhov degree ntawm qhov khoom uas tau teeb pom kev zoo, uas yog, qhov sib piv ntawm cov luminous flux tau los ntawm qhov chaw ntawm qhov khoom mus rau thaj chaw illuminated. Nws yog ib qho ntawm cov cuab yeej siv feem ntau hauv kev ntsuas qhov pom kev.
Lub hauv paus ntsiab lus ntawm lub illuminometer: Lub illuminometer muaj lub taub hau photometer (tseem hu ua lub teeb tau txais kev sojntsuam, suav nrog lub receiver, V ( λ) ) Nws muaj ob ntu: lub lim, cosine corrector, thiab nyeem ntawv. siv selenium (Se) photocells lossis silicon (Si) photocells, tseem hu ua lux meters.
Cov kev cai siv rau illuminometer: Kev sojntsuam ntawm lub illuminometer yog ua los ntawm cov khoom siv iav, uas yooj yim tawg thiab puas, thiab cov nyhuv dej tsis zoo thaum siv.
1. Photocells yuav tsum siv selenium (Se) photocells los yog silicon (Si) photocells nrog zoo linearity; Ua kom muaj kev ruaj ntseg zoo thiab muaj kev nkag siab zoo txawm tias tom qab ua haujlwm ntev; Thaum siv high E, xaiv photocells nrog siab sab hauv tsis kam, uas tsis tshua muaj rhiab heev thiab zoo linearity, thiab tsis yooj yim puas los ntawm lub teeb muaj zog irradiation;
2. Kev them nyiaj sab hauv nrog V ( λ ) Kho cov lim dej kom raug, haum rau kev siv lub teeb pom kev ntawm lub teeb pom kev zoo heterochromatic, nrog qhov yuam kev me me;
3. Yog vim li cas ntxiv ib cosine lub kaum sab xis compensator (milky dawb iav los yog dawb yas) nyob rau hauv pem hauv ntej ntawm photocell yog hais tias thaum lub teeb meem lub kaum sab xis loj, lub photocell deviates los ntawm txoj cai cosine;
4. Lub illuminometer yuav tsum khiav ntawm lossis ze ntawm chav tsev kub (qhov drift ntawm photocell hloov nrog kub).
Classification ntawm illuminometers:
1. Visual illuminometer: siv tsis yooj yim, tsis muaj tseeb, tsis tshua siv;
2. Photoelectric illuminometer: feem ntau siv selenium photocell illuminometer thiab silicon photocell illuminometer.
