Abantu balinganisa izibane besebenzisa iiyunithi ezahlukeneyo ezifana neCandela, iLux, kunye neLumens. Ngaba ukhe wacinga ngokuvavanya izibane usebenzisa nayiphi na kwezi yunithi?
Usenokungena engxakini ngokwenza oko ngenxa yokuba iiyunithi zokulinganisa ukukhanya iCandela, iLux, kunye neLumens zihlala zitshintshana. Ngoko ke ndagqiba ekubeni ndinihlangule kwesi sidubedube ngokuzisa iiyantlukwano zabo.
Iiyunithi Candela, Lux, kunye neLumens zilinganisa ubunzulu bokukhanya. I-Lux ibhekisa kubuninzi bokukhanya obufikelela kwinto. Kwaye iLumens kunye neCandela ziimetrics ezisetyenziselwa ukujonga ubungakanani bokukhutshwa kokukhanya.
Ukanti, la magama mathathu asoloko esetyenziswa kakubi xa kumiselwa ukukhanya kokukhanya. Yiyo loo nto kufuneka uyazi ukuba zithetha ukuthini kwaye zeziphi izinto ezahlulahlula iiyunithi enye kwenye.
Masingene kwingxoxo ukuze sazi ngakumbi.
Yintoni uCandela?
I-Candela ichaza Ukukhanya Okukhanyayo komthombo wokukhanya. Eli gama lisuka kwigama lesiLatini elithi 'Candela' kwaye linxulumene nobunzulu bekhandlela. Umzekelo, enye iCandela iphantse ilingane nokuqaqamba kwekhandlela.
Ngokwemigaqo, uCandela ulinganisa ubunzulu bokukhanya kwicala okanye i-engile ethile. Ayicacanga? Cinga ngokukhanya kwelaser; isalathisa ukukhanya kwicala elithile. Yiyo loo nto inqanaba leCandela lilelona liphezulu kwilaser okanye izibane.
Yintoni uLux?
I-Lux (lx) yiyunithi yokulinganisa yokukhanyisa. Ibonisa ubuninzi bokukhanya okubonakaliswe kwi-square meter nganye.
Ke, ukukala kweLux, kufuneka uqwalasele indawo yegumbi okanye umgama womthombo wokukhanya ukusuka kwindawo ethile. Kule meko, ixabiso le-Lux lihambelana ngokuphambeneyo kwisikwere ukuya kubude. Oko kukuthi, njengoko umgama ukhula, ixabiso leLux liyancipha. Ngaloo ndlela, ukukhanya okubonakala kuqaqambile kwigumbi elincinane akuyi kukhangeleka kuqaqambile xa kufakwe kwigumbi elikhulu.
Ngamagama eencwadi, uLux uchazwa njengo-1 lx ulingana no-1lm/m^2. Oko kukuthi, ixabiso leLux lixhomekeke kwiLumens (lm). Ke, masitsibe kwiLumens ukuze sifunde ngcono iLux-
Yintoni iLumen?
Ixabiso leLuminous Flux lilinganiswa ngeLumen (lm). Lelona gama lisetyenziswa kakhulu ukubonisa ubunzulu bezibane.
IiLumens zichaza umthamo opheleleyo womthombo wokukhanya. Oko kukuthi, ukuqaqamba kukonke okuveliswa kukukhanya ziiLumens. Ngokungafaniyo neCandela (cd), iLumens ayibali ukukhanya ukusuka kwicala elithile. Kunoko ibonisa iLumens ekrwada.
Le Lumen ikrwada ilinganisa ukuqaqamba komthombo wokukhanya macala onke. Ngenxa yoko, kungakhathaliseki ukuba yiyiphi i-angle yokuphuma kokukhanya, ixabiso le-Lumen lihlala lihleli.
Ngaphaya koko, ixabiso leLumens liyahluka ngokohlobo lokukhanya, umbala, kunye nomthombo wamandla.
Candela vs Lux vs Lumens - Yintoni Umahluko?
Umahluko ophambili phakathi kweCandela, iLux, kunye neLumens umi ngolu hlobo lulandelayo kwitheyibhile engezantsi-
| iinkcukacha | Candela | Lumens | Lux |
| inkcazelo | I-Candela lizinga lokukhanya komthombo wokukhanya kwi-engile ethile kunye necala. | I-Lumen ibonisa ukukhutshwa okupheleleyo kokukhanya kuwo onke amacala. | Isixa sokukhanya esibetha kwindawo nganye yemitha yesikwere yiLux. |
| Umlinganiselo weYunithi ye | Ubunzulu bokukhanya | Isibane esikhanyayo | Ukukhanya |
| Uphawu (SI) | cd | lm | lx |
ICandela yinxalenye yomlinganiselo weLuminous Intensity. Ngeli xesha, iLumen kunye neLux ziiyunithi zeLuminous Flux kunye neIlluminance.
Ngamagama alula, uCandela ubonisa indlela oqaqambe ngayo umthombo wokukhanya; I-Lux ilinganisa ukuba into ibonakala iqaqambe kangakanani kumthombo wokukhanya. Kwaye i-Lumen ibonisa isiphumo esipheleleyo esivela kumthombo wokukhanya.
Ukutshintsha komgama kuchaphazela ixabiso leLumen kunye neLux, kodwa uCandela uhlala engatshintshi. Kungenxa yokuba ixabiso likaCandela lixhomekeke kwii-engile endaweni yomgama.
Candela vs Lux vs Lumens-Zinxulumana njani?
Olona nxulumano luqhelekileyo phakathi kwala magama mathathu kukuba onke asisilinganisi somlinganiselo wokukhanya. Ukucacisa ingqikelelo, masifikelele kwingcambu yala magama-
I-Lumens luhlobo oluphuma kwiCandela. Omabini la magama alinganisa ukukhanya; oko kukuthi, bachaza ukuqaqamba komthombo wokukhanya. Umahluko kukuba i-lumens ithathela ingqalelo imiqadi yokukhanya ukusuka macala onke. Ngokuchaseneyo, uCandela uqwalasela oko kwicala elithile.
Kwakhona, iyunithi ye-Lux ngumlinganiselo we-Lumens nge-square meter nganye. Yindlela yokuphuma kweLumens. Ngokwezibalo, i-1 lx = 1lm/m^2. Le nxaki ibonelela ngomboniso ochanekileyo wokuqaqamba kokukhanya kuneLumens.
Kwaye inyani enomdla ngakumbi kukuba i-Lux luguqulelo lwemetric yamakhandlela eenyawo (igama elidala elibhekisa kuCandela).
| Ithathwe kwi-Derived from Lux ———————→ Lumens ——————–→ Candela 1 lx = 1 lm/m2 = 1 cd·sr/m2 |
Ke, iCandela, iLux, kunye neLumens zinxibelelene enye kwenye. Nangona kunjalo, bachaza izazisi ezintathu ezahlukeneyo, kodwa ziqhagamshelwe kwaye ziyaguqulwa.
Ingqukuva egcweleyo ine-engile eqinileyo ye-4π steradians, ngoko ke umthombo wokukhanya osasaza ikhandlela ngokufanayo macala onke unokukhanya okuguquguqukayo okupheleleyo.
I-1 cd × 4πsr = 4π cd · sr ≈12.57 lm.
Izinto ezichaphazela ixabiso leCandela Vs. ULux Vs. Lumens
Amaxabiso eCandela, Lux, kunye neLumens ayaguquguquka ngenxa yezi zinto zilandelayo:
Umgama
Umgama phakathi kwento kunye nomthombo wokukhanya uchaphazela amaxabiso eLux kunye neLumens. Kungenxa yokuba isikwere somgama sichanekile ngokwezi yunithi.
Ukwandisa ubude ngamaxesha amabini, ixabiso le-lx liya kunciphisa ukuya kwi-1/4th yamaxabiso okuqala. Kodwa umgama awulichaphazeli ixabiso leCandela, kuba ikhonsathi eneengile kunomgama.
I-engile yeRadiance
I-angle eveliswa ngumthombo wokukhanya ichaphazela ukukhanya. Incinci i-angle, ngakumbi ixabiso leCandela kunye neLux; ngakumbi ukukhanya.
Ngaphezu koko, indawo yokukhanyisa iyanda kwii-engile ezinkulu zokukhanya, igcina ixabiso le-lm lingatshintshi.
Ubuchule obuqaqambileyo
Ukusebenza okukhanyayo kulinganisa amandla omthombo wokukhanya ukuvelisa izibane eziqaqambileyo. Kuxhomekeke kumthombo wamandla weWattage kunye ne-Lumens rating. Ukusebenza okukhanyayo kuyanda njengoko ixabiso leWatt liyancipha.
Oko kukuthi, okukhona ukukhanya okuqaqambileyo kusiba, kokukhona kuqaqamba ngakumbi ukukhanya.
Yeyiphi iYunithi yoMlinganiso wokuKhanya oMgangatho woMtya we-LED?
Iyunithi yokulinganisa ukukhanya okusemgangathweni ye-LED Stipe ziiLumens. Kodwa, sihlala sisenza iimpazamo xa silinganisa ukuqaqamba kwemivimbo ye-LED ngeWattage. Leyo yinto engafanelekanga ngokupheleleyo njengoko ukukhanya okwahlukileyo kunokusebenza okukhanyayo okwahlukileyo.
Ke, indlela echanekileyo yokugweba ukusebenza komgca we-LED ngeLumen ngenyawo / imitha.
Nangona kunjalo, ixabiso leLumens liyahluka kunye nombala womgca we-LED. Umzekelo, imigca emhlophe ye-LED inexabiso eliphezulu le-Lumen kunemigca ye-LED enemibala.
Zinxulumana njani iiLumens & Wattage?
IiLumens zibonisa isiphumo esipheleleyo esivela kumthombo wokukhanya, ngelixa i-Wattage ingamandla asetyenziselwa ukuqhuba ukukhanya. Sekunjalo, ukugweba ukusebenza kokukhanya, kufuneka uqwalasele ukusebenza kakuhle kokukhanya ngokwazi i-lumen kunye nexabiso leWattage.
Kule meko, ii-bulbs zokulondoloza amandla zizona zisebenza kakuhle. Ngenxa yokuba bavelisa isantya esiphezulu se-lumen besebenzisa amandla amancinci (Wattage). Yiyo loo nto zibizwa ngokuba ziibhalbhu ezonga amandla.
Ukusebenza kokukhanya kubalwa njengeLumen ngeWatt. Yiyo i
Ukusebenza kokukhanya, E = lm/W
Ke, ukusebenza kokukhanya kuyanda xa ukusebenza kuphucuka. Kwangaxeshanye, izibane ezisebenza kakuhle kakhulu zinciphisa ityala lakho lombane.
FAQs
isiphelo
Ndiyathemba, ukuba ufunda eli nqaku, ngoku uyazi umahluko phakathi kweCandela, iLux, kunye ne-lumens kakuhle. Ke, akusayi kuphinda kubhideke ekugwebeni ukuqaqamba kokukhanya ukusukela namhlanje.
Singumzi-mveliso okhethekileyo ekuveliseni umgangatho ophezulu olungiselelweyo Imichilo ye-LED kunye nezibane ze-neon ze-LED.
Ndiyacela Qhagamshelana nathi ukuba ufuna ukuthenga izibane ze-LED.
