Vim li cas cov teeb pom kev tau hloov nrog LED variants?

Rau cov neeg feem coob yug hauv tebchaws Askiv ua ntej xyoo 2000s, cov teeb pom kev zoo ib txwm yog xim zoo nkauj amber. Qhov no yog vim sodium vapor teeb, uas tau pib pom kev siv dav hauv xyoo 1970s. Ua ntej ntawd, cov cuab yeej siv yog mercury vapor, uas muaj lub teeb xiav-ntsuab. Sodium teeb tuaj nyob rau hauv ob hom tseem ceeb, tsis tshua muaj siab thiab siab siab, thiab cov tshuab feem ntau pom nyob rau hauv UK yog qhov tsawg-siab ntau yam. Cov teeb no siv cov pa roj tsawg (argon, neon, lossis sib tov) thiab ib qho me me ntawm cov khoom sodium uas yog yaj thiab vaporised thaum qhib. Thaum vaporised, lub zog me me yuav tsum tau ua kom muaj zog sodium (ua kom lub teeb sodium muaj zog heev) thiab emit ntau lub teeb pom kev nqaim (zoo ib yam li lub laser).

Thaum cov teeb no tau zoo rau 70 xyoo dhau los ua tsaug rau lawv cov kev ua tau zoo (piv rau lwm cov thev naus laus zis thev naus laus zis), lawv tau hloov pauv nrog LED hloov pauv. Ntau tus ntseeg tias cov teeb no tau hloov pauv rau kev ua tau zoo, tab sis qhov no tsis yog tag nrho vim tias niaj hnub siv hluav taws xob tsis tshua muaj hluav taws xob tsawg tsawg dua li LEDs (37 ~ 120 lumens / watt piv rau 50 ~ 160 lumens / watt. ).

Ib qho laj thawj ntawm kev hloov cov teeb pom kev zoo nrog LEDs yog tias cov teeb pom kev laus tsuas tsim teeb daj, cuam tshuam kev pom rau cov neeg taug kev thiab cov neeg tsav tsheb. Kev tshawb fawb tau pom tias LED teeb (uas tsim lub teeb dawb) tuaj yeem txhim kho qhov pom kev sab nraud thaum hmo ntuj, txo qis kev sib tsoo, thiab pab cov neeg tsav tsheb pom cov teeb meem zoo dua.

Lwm qhov laj thawj rau kev hloov txoj kev teeb nrog LEDs yog tias LEDs muaj kev taw qhia uas yuav pab kom tsis txhob muaj teeb meem ntawm huab cua sab saud. Qhov no tuaj yeem ua tau zoo heev rau cov neeg siv hnub qub siv cov khoom siv telescopic high-end uas yuav tsum muaj lub ntuj ntshiab nrog lub teeb me me. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias lub teeb sodium tuaj yeem lim tau yooj yim los ntawm lub tsom iav vim qhov nqaim ntawm cov teeb pom kev tsis tshua muaj siab sodium, thiab LEDs yog qhov nyuaj rau lim (yog tias ua tau).