Niaj hnub nim no LED tau dhau los ua ib feem ntawm peb lub neej. Hnub no, kuv yuav qhia koj luv luv txog lub tswv yim, cov yam ntxwv, thiab kev faib tawm.

Lub Tswv Yim ntawm LED

Ib lub LED (Light Emitting Diode) yog ib lub khoom siv semiconductor uas hloov hluav taws xob ncaj qha mus rau Lub Teeb. Lub plawv ntawm LED yog ib lub semiconductor chip, nrog ib kawg txuas rau ntawm lub scaffold, ib kawg yog lub electrode tsis zoo, thiab lwm qhov kawg txuas nrog qhov kawg zoo ntawm lub zog fais fab, yog li ntawd tag nrho lub chip tau kaw rau hauv epoxy resin.

Ib lub semiconductor chip muaj ob ntu, ib ntu yog p-type semiconductor, uas qhov nyob hauv, thiab lwm ntu yog n-type semiconductor, uas electrons nyob hauv. Tab sis thaum ob lub semiconductor txuas nrog, "pn junction" tsim ntawm lawv. Thaum muaj hluav taws xob siv rau lub chip los ntawm cov hlau, cov electrons raug thawb mus rau thaj tsam p, qhov chaw uas lawv rov sib koom ua ke nrog qhov thiab tso tawm lub zog hauv daim ntawv ntawm photons, uas yog li cas LEDs ci. Thiab qhov wavelength ntawm lub teeb, xim ntawm lub teeb, yog txiav txim siab los ntawm cov khoom siv uas tsim PN junction.

Cov yam ntxwv ntawm LED

Cov yam ntxwv ntawm LED txiav txim siab tias nws yog qhov chaw zoo tshaj plaws los hloov qhov chaw teeb pom kev zoo ib txwm muaj, nws muaj ntau yam kev siv.

• Ntim Me Me

Lub LED yog ib qho me me heev uas tau ntim rau hauv epoxy resin, yog li nws me me thiab sib dua.

-Kev Siv Hluav Taws Xob Tsawg

Kev siv hluav taws xob LED tsawg heev, feem ntau hais lus, qhov hluav taws xob ua haujlwm ntawm LED yog 2-3.6V.
Lub sijhawm ua haujlwm tam sim no yog 0.02-0.03A.
Uas yog hais tias, nws siv tsis pub ntau tshaj 0.1W ntawm hluav taws xob.

• Kev Pabcuam Ntev

Nrog rau qhov tam sim no thiab voltage zoo, LEDs tuaj yeem muaj lub neej ua haujlwm txog li 100,000 teev.

• Kev Ci Nkaus Siab thiab Kub Tsawg

• Kev Tiv Thaiv Ib puag ncig

Cov teeb LEDs yog ua los ntawm cov khoom tsis muaj tshuaj lom, tsis zoo li cov teeb fluorescent, uas muaj mercury thiab ua rau muaj kuab paug. Lawv kuj tuaj yeem siv dua tshiab.

• Muaj zog thiab ruaj khov

Cov LEDs raug kaw tag nrho hauv epoxy resin, uas muaj zog dua li ob qho tib si lub teeb thiab cov raj fluorescent. Tsis muaj qhov xoob hauv lub teeb, uas ua rau cov LEDs tsis puas tsuaj.

Kev faib tawm ntawm LED

1, Raws li lub teeb emitting rajximcov ntsiab lus

Raws li lub teeb emitting xim ntawm lub teeb emitting raj, nws muaj peev xwm muab faib ua liab, txiv kab ntxwv, ntsuab (thiab daj ntsuab, tus qauv ntsuab thiab ntsuab ntshiab), xiav thiab lwm yam.
Tsis tas li ntawd xwb, qee cov LEDs muaj cov chips ntawm ob lossis peb xim.
Raws li lub teeb emitting diode sib xyaw lossis tsis sib xyaw nrog cov scatterers, xim lossis tsis muaj xim, cov xim sib txawv saum toj no ntawm LED kuj tseem tuaj yeem muab faib ua plaub hom xim pob tshab, tsis muaj xim pob tshab, xim scattering thiab tsis muaj xim scattering.
Cov teeb ci ntsa iab thiab cov teeb ci ntsa iab siv tau ua lub teeb qhia.

2. Raws li cov yam ntxwv ntawm lub luminousntontawm lub raj xa hluav taws xob

Raws li cov yam ntxwv ntawm lub teeb ci ntsa iab ntawm lub raj xa dej, nws muaj peev xwm muab faib ua lub teeb puag ncig, lub teeb plaub fab, lub teeb plaub fab, lub ntsej muag lub teeb ci ntsa iab, lub raj sab thiab lub raj me me rau kev teeb tsa saum npoo, thiab lwm yam.
Lub teeb puag ncig yog muab faib ua Φ2mm, Φ4.4mm, Φ5mm, Φ8mm, Φ10mm thiab Φ20mm, thiab lwm yam.
Txawv teb chaws feem ntau sau cov Φ3mm lub teeb-emitting diode ua T-1, φ5 hli li T-1 (3/4), thiabφ4.4mm li T-1 (1/4).

3. Raws li qhovqauvcov teeb-emitting diodes

Raws li cov qauv ntawm LED, muaj tag nrho cov epoxy encapsulation, hlau puag epoxy encapsulation, ceramic puag epoxy encapsulation thiab iav encapsulation.

4. Raws liLub zog luminous thiab kev ua haujlwm tam sim no

Raws li qhov ci ntsa iab thiab tam sim no ua haujlwm, nws muab faib ua qhov ci ntsa iab LED (qhov ci ntsa iab 100mCD);
Qhov luminous intensity ntawm 10 thiab 100 mCD yog hu ua high bright light-emitting diode.
Lub zog ua haujlwm ntawm LED dav dav yog txij li kaum mA txog kaum ob mA, thaum lub zog ua haujlwm ntawm LED qis qis dua 2 mA (qhov ci ntsa iab zoo ib yam li lub raj xa hluav taws xob ib txwm muaj).
Ntxiv rau cov txheej txheem kev faib tawm saum toj no, kuj tseem muaj cov txheej txheem kev faib tawm los ntawm cov khoom siv chip thiab los ntawm kev ua haujlwm.

Ted: tsab xov xwm tom ntej no kuj yog hais txog LED. Nws yog dab tsi? Thov tos ntsoov.