LED teeb raug mob rau qhov muag? Tag nrho cov xiav teeb loading tsis ncaj ncees lawm?

Xyoo 2013, Ntawv Dawb rau "Kev Taws Teeb Hluav Taws Xob Taws Teeb thiab Kev Tshawb Pom Taws Xob". 15 tus kws qhia piav txog lub ntsiab ntawm LED teeb pom kev zoo, thiab combed nrog Blu-ray kom meej meej. Yog li, puas muaj teeb meem nrog LED teeb thaum kawg? Zhou Jingming, xib fwb ntawm Lub Tsev Haujlwm Taws Teeb thiab Kev Teeb Haujlwm ntawm Fudan University hauv Shanghai, thiab Jing Jing, Thawj Coj ntawm Hueys Asia Pacific Pacific Eye Tsev Kho Mob, piav qhia.

LED teeb muaj kev pom zoo

LED yog lub cim ntawm lus Askiv lub teeb emitting diode (LED), nws cov qauv yooj yim yog ib qho khoom siv electroluminescent semiconductor, muab tso rau hauv ib lub txee khiab, thiab ces khi nrog epoxy cob ib ncig los tiv thaiv tub ntxhais. Qhov no ua rau nws muaj zog dua, tab sis nws qhov ua tau zoo tshaj qhov ntawd.

"Soj ntsuam lub teeb ci, teeb siab photoelectric, feem ntau peb siv lumens." Hais tias Zhou Taiming. Lumen yog lub hauv paus ntawm qhov muaj zog txaus. Hauv chav no, nws tuaj yeem pom tias ntau npaum li cas lub teeb tawm thaum lub teeb ci tawm 1 Watt (W) ntawm hluav taws xob. Feem ntau, qhov siab tshaj ntawm kev hloov lub teeb ci siab yog 555 nanometers (nm). Teeb lub teeb nrig tib lub sijhawm tsuas ncav cuag 15nm, lub teeb hluav taws xob yog 50nm, thiab lub zog teeb txuag hluav taws xob nyob hauv kev ua lag luam muaj peev xwm ncav cuag 60nm tam sim no. "Tab sis cov no tsis ua teeb ci, nws muaj peev xwm ncav cuag 120 ~ 140nm." Cov duab no tau zoo kawg li. " Hais tias Zhou Taiming.

Tsis tas li ntawd, lub neej ntev txog 50,000 teev rau cov teeb uas muaj teeb pom kev zoo dua ntawm lub teeb hluav taws xob kom txog 200 teev thiab cov roj teeb. Ntxiv mus, rau cov neeg ua haujlwm, cov teeb ci teeb pom kev zoo kuj yog kev xaiv zoo. Ua ntej tshaj, nws yog tsim los ntawm cov ntaub ntawv uas tsis yog tshuaj lom. Tsis zoo li cov roj fluorescent, mercury uas muaj mercury tuaj yeem ua kom muaj kuab paug. Tib lub sijhawm, LEDs tuaj yeem siv tau thiab rov qab siv dua. Qhov ob, LED noj tsawg. Feem ntau, qhov ua hauj lwm voltage ntawm LED yog 2 ~ 3.6V. Qhov kev khiav hauj lwm tam sim no yog 0.02 ~ 0.03. Qhov no txhais tau hais tias nws consumes tsis ntau tshaj li 0.1W ntawm hluav taws xob.

Kev tsis sib to taub yuam kev

Vim tias LED teeb muaj ntau yam zoo, vim li cas neeg tsis ntseeg nws? Ib qho tseem ceeb tshaj plaws yog qhov muag Blu-qhov muag. Yuav kom tshab xyuas qhov teeb meem no, thawj zaug saib lub tswv yim ntawm xiav lub teeb.

Nyob hauv daim ntawv dawb "General Lighting LEDs and Blu-ray," cov neeg tau hais tias lub teeb uas muaj lub siab tshaj 435 txog 500 nm yog hu ua xiav lub teeb thiab xiav teeb, tab sis feem ntau, 400 mus 500 nm yog hu ua cheeb tsam xiav. "Blu-Ray yog ib feem nrog lub zog siab tshaj plaws ze rau ultraviolet lub teeb," piav qhia Xiao Jing. Yog tias ib tus neeg raug lub teeb xiav ntev, nws tuaj yeem ua rau qhov muag puas tsuaj, tshwj xeeb tshaj yog ua rau lub cev tsis zoo. Vim hais tias xiav lub teeb yog absorbed los ntawm retinal pigment epithelium, dawb radicals raug tsim, thiab cov dawb radicals ua apoptosis ntawm retinal epithelial hlwb thiab yog li tsis muaj peev xwm muab photoreceptors.

Txawm li cas los xij, Blu-ray tshav tsuas tsis muaj nyob hauv teeb liab. Muaj lub teeb xiav hauv cov tshav ntuj, cov xov tooj ntawm tes xov tooj, thiab lwm yam, thiab Blu-ray yog tsis siv. Ua ntej tshaj, nws yog ib feem ntawm lub hnub. Yog tias tsis muaj lub teeb xiav, neeg yuav tsis pom lub ntuj xiav. Ntxiv mus, nws muaj peev xwm kho lub cev tib neeg lub cev. Xyoo 2003, cov kws tshawb fawb ntawm Brigham thiab Cov Tsev Kho Mob ntawm poj niam hauv Boston thiab Jefferson Tsev Kawm Ntawv Tshuaj Kho Mob hauv Teb Chaws Asmeskas tau pom hais tias tib neeg lub cev ua hauj lwm tseem ceeb dua ntais ntawm lub teeb ntu ntawm lub teeb ci dua lub teeb ci ntsa iab. "Thaum tshav kub tuaj thaum sawv ntxov thiab xiav lub teeb hauv tshav ntuj nce, qhov tso pa tawm ntawm cov qog hauv lub cev qis, thiab neeg sawv los ntawm lawv cov kev npau suav. Thaum tsaus ntuj, xiav lub teeb yuav ploj, lub hnub hloov mus rau hauv ib lub hnub liab, thiab lub cev melatonin nce. Kev xav, neeg xav tsaug tsaug zog. "Zhou Taiming said.

"Cov neeg tsis tuaj yeem tig rau hnub tshav mus ib txhis, yog li cov neeg siv cov teeb ci teeb ci tsis tuaj yeem saib qhov muag teeb," said Zhou Taiming. Nyob rau hauv daim ntawv dawb, cov kws tshawb fawb tau tshawb xyuas cov kev tshawb fawb thiab pom tias tsis muaj qhov sib txawv ntawm qhov teeb meem ntawm LED teeb liab thiab lwm yam teeb ci, tab sis nws tseem pom zoo kom ntxiv ib qho kev tiv thaiv ntawm sab nraum lub teeb ci. Jing Jing tseem tau teev tias thaum nriav cov teeb ci teeb ci, nws yog ib qho tsim nyog yuav tau xaiv cov khoom nrog guaranteed zoo. Nyob rau hauv lub neej zoo, cov neeg muaj peev xwm tiv thaiv cov zaub ntsuab thiab cov txiv hmab txiv ntoo uas muaj ntau lub txiv lutein, xws li cov zaub qhwv, zaub paj, zaub qhwv, zaub txhwb, thiab lwm yam, thiab caij nyoog caij nthwv dej los sis hnav cov xim xiav. Tshaj li, yog tias ib tug neeg ua qe phais, nws yog qhov zoo tshaj rau koj xaiv lub lens qho khoom siv nrog xiav lub teeb pom kev zoo.

Tsis tas li ntawd, Zhou Taiming tau hais tias nws yog qhov zoo tshaj plaws los tsim teeb ci teeb ci hauv chav pw, vim lub teeb xiav zoo rau kev tso pa tawm ntawm melatonin nyob rau hauv tib neeg lub cev thiab ua rau neeg tsaug zog.

kev loj hlob yav tom ntej

"Niaj hnub no, LED teeb yog niaj hnub theem ntawm kev hloov cov teeb pom kev pom zoo. Piv txwv li, cov qij txhuam cov roj muaj qhov nkag mus hauv cov tsev neeg uas tsis yooj yim. "Zhou Taiming ntxiv lawm," Qhov thib ob theem yuav ua rau cov txheej txheem LED teeb mus kev, thiab qhov thib peb Cov theem yog ntse. "

Kev tshaj tawm thiab kev txawj ntse yog tag nrho raws li LED txiv kab ntxwv, ntsuab, xiav, liab doog, thiab xiav. Tsis ntev tom ntej no, tib neeg tuaj yeem hloov lub teeb, zoo li lub hnub pom los ntawm tib neeg thaum ntxov thaum yav tsaus ntuj. Kev hloov ntawm cov teeb pom kev zoo yuav tsis txwv rau kev hloov qis thiab qaug zog, tab sis nws tsuas tso tau ib qhov teeb pom kev zoo los hloov xim. "Piv txwv li, yog tias koj xav ua kom dawb, koj tuaj yeem thim tus liab." Yog tias koj xav tau lub teeb daj, koj tuaj yeem tig lub xiav, "said Zhou Taiming.