LED luminaire yekuona tekinoroji
LED mwenje sosi uye yechinyakare mwenje sosi ine misiyano yakakura muhukuru hwemuviri uye kugoverwa kwenzvimbo kwechiedza chinoyerera, spectrum uye kusimba kwechiedza. Kuonekwa kwe LED hakugone kukopa zviyero zvekuonekwa uye nzira dzechinyakare magetsi masosi. Aya anotevera maitiro ekuona ezvakajairwa LED luminaires.
Kuonekwa kwe optical parameters yemarambi e LED
1, kupenya kusimba kwekuona
Kusimba kwechiedza, kusimba kwechiedza, zvinoreva kuwanda kwechiedza chinoburitswa pane imwe kona. Nekuda kwechiedza chakanyanya che LED, iyo inverse skweya mutemo haishande munzvimbo yepedyo. Chiyero cheCIE127 chinotsanangura nzira mbiri dzekuyeresa: yekuyera mamiriro A (kure munda mamiriro) uye yekuyera mamiriro B (pedyo nemunda mamiriro) yekuyera kusimba kwechiedza. Muchiitiko chechiedza chechiedza, nzvimbo ye detector yemamiriro ose maviri ndeye 1 cm 2. Kazhinji, kupenya kwesimba kunoyerwa uchishandisa yakajairwa mamiriro B.
2, luminous flux uye kujekesa kwechiedza
Iyo inopenya inoyerera ihuwandu hwehuwandu hwechiedza chinoburitswa nemwenje sosi, ndiko kuti, huwandu hweruminescence. Nzira dzekuona dzinonyanya kusanganisira marudzi maviri anotevera:
(1) Nzira yekubatanidza. Mwenje wakajairika uye mwenje unoyedzwa unobatidzwa sequentially muchikamu chekubatanidza, uye kuverenga kwavo mushanduro yephotoelectric kunorekodhwa.
(2) Spectroscopic nzira. Iyo inopenya inoyerera inoverengerwa kubva kune inotaridzika simba P(λ) kugovera.
Kubwinya kwakanyatsojeka ndiko chiyero chechiedza chinopenya chinobudiswa nechiedza kune simba rinoshandiswa naro, uye kupenya kwe LED kunowanzoyerwa nenzira inogara iripo.
3. Kuonekwa kwehunhu
Iyo spectral hunhu hwekuonekwa kweiyo LED inosanganisira spectral simba rekugovera, mavara anoronga, tembiricha yemavara, mavara ekupa index nezvimwe zvakadaro.
Iyo spectral simba kugovera kunoratidza kuti mwenje wemwenje sosi inoumbwa neakawanda akasiyana wavelengths emwaranzi yemavara, uye simba remwaranzi yewavelength imwe neimwe zvakare rakasiyana. Uyu mutsauko unorongeka zvakatevedzana newavelength, iyo inonzi spectral simba rekugovera kwechiedza chinobva. Chiedza chechiedza chinowanikwa nekuenzanisa kuyerwa uchishandisa spectrophotometer (monochromator) uye mwenje wakajairika.
Iyo coordinate yeruvara iratidziro yedhijitari yehuwandu hweruvara runovhenekera rwechiedza pagirafu. Iyo coordination graph inomiririra ruvara ine akawanda ekubatanidza masisitimu, kazhinji muiyo X uye Y coordinate masisitimu.
Tembiricha yeruvara ndiyo chiyero chemwenje sosi yemavara tafura (kuonekwa kweruvara kutaridzika) kunoonekwa neziso remunhu. Kana mwenje unoburitswa nemwenje unofanana neruvara rwechiedza chinoburitswa nemuviri mutema chaiwo pane imwe tembiricha, tembiricha ndiyo tembiricha yeruvara. Mumunda wekuvhenekera, tembiricha yemavara chinhu chakakosha parameter inotsanangura maoptical maitiro echiedza sosi. Dzidziso yetembiricha yeruvara inotorwa kubva kune yeblackbody radiation, iyo inogona kuwanikwa kubva kune mavara coordinates eblackbody locus nemavara coordinates ekwakabva.
Indekisi yeruvara inotaridza huwandu hunoitwa chiedza nechinobuditsa chiedza kuratidza nenzira kwayo ruvara rwechinhu, icho chinowanzo ratidzwa neindex yeruvara rwerendering indekisi Ra, inova masvomhu eindekisi yeruvara inobudisa indekisi yemavara masere. samples. Ruvara runopa indekisi chinhu chakakosha chemhando yechiedza, chinotaridza huwandu hwemashandisirwo emwenje. Kuvandudza iyo mavara ekupa index yechena LED nderimwe remabasa akakosha ekutsvagisa kweLED nekusimudzira.
4, chiedza chakanyanya kugovera bvunzo
Hukama huri pakati pesimba rechiedza nekona yenzvimbo (direction) inonzi pseudo-light intensity distribution, uye curve yakavharwa inoumbwa nekugovera kwakadaro inodaidzwa kuti light intensity distribution curve. Sezvo kune akawanda ekuyera mapoinzi uye imwe neimwe poindi inogadziriswa nedata, inowanzoyerwa neye otomatiki yekugovera photometer.
5. Mhedzisiro yekushisa kwekuita pane optical maitiro e LED
Tembiricha inokanganisa optical properties ye LED. Huwandu hukuru hwekuyedza hunogona kuratidza kuti tembiricha inokanganisa iyo LED emission spectrum uye mavara anoronga.
6, kuyera kwepamusoro kuyera kuyerwa
Kupenya kwechitubu chechiedza mune imwe nzira ndiko kupenya kwakajeka kwechitubu chemwenje munzvimbo yakarongedzerwa yechitubu chechiedza. Kazhinji, mita yekupenya kwepamusoro uye mita yekupenya inonangwa inoshandiswa kuyera kupenya kwepasi, uye kune zvikamu zviviri zvenzira yemwenje yekuvavarira uye yekuyera nzira yechiedza.
Kuyerwa kwemamwe maparamita ekuita kwemarambi e LED
1. Kuyera kwemagetsi emagetsi emarambi e LED
Iwo magetsi parameters anonyanya kusanganisira kumberi uye kudzosera kumashure uye reverse currents. Izvo zvine chekuita nekuti marambi e LED anogona kushanda zvakajairwa. Ndiyo imwe yenheyo yekutonga kwekutanga kuita kwemarambi e LED. Kune marudzi maviri emagetsi parameter kuyerwa kwemwenje ye LED: ndiko kuti, kana ikozvino inogara iripo, iyo test voltage parameter; kana iyo voltage inogara iripo, iyo parameter iripo inoedzwa. Iyo chaiyo nzira ndeyekutevera:
(1) Voltage yemberi. Iyo yekumberi ikozvino inoshandiswa kune mwenje we LED kuti uonekwe, uye kudonha kwevoltage kunogadzirwa kumativi maviri. Gadzirisa kukosha kwazvino kuti uone simba rekupa, rekodha kuverenga kwakakodzera paDC voltmeter, inova iyo yekumberi voltage ye LED luminaire. Zvinoenderana nepfungwa yakajairwa, kana iyo LED ichiita munzira yekuenda kumberi, kuramba kudiki, uye nzira yekubatanidza yekunze uchishandisa ammeter yakanyatso.
(2) Reverse current. Isa reverse voltage kune iyo LED luminaire iri kuedzwa, gadzirisa yakadzorwa magetsi, uye ikozvino kuverenga mita ndiko kudzoreredza ikozvino kwechiedza che LED. Izvo zvakafanana nekuyera kumberi kwemhepo, nokuti kushorwa kwe LED kunodzoserwa kana reverse conduction yakakura, mita yazvino inobatanidzwa mukati.
2, LED mwenje yekupisa maitiro bvunzo
The thermal maitiro e LED ane zvakakosha pesvedzero pane optical uye magetsi emagetsi e LEDs. Thermal resistance uye junction tembiricha ndiwo akanyanya kupisa maitiro e LED 2. Thermal resistance inoreva kupikisa kwemafuta pakati pePN junction nepamusoro peimba, kureva kuti, chiyero chemusiyano wetembiricha uchitevedza nzira yekuyerera kwemagetsi kune simba rakabviswa. pachiteshi. Iyo tembiricha yekusangana inoreva tembiricha yePN junction ye LED.
Nzira dzekuyera tembiricha yejunction ye LED uye kuramba kwemafuta kazhinji dzinosanganisira: infrared micro-imager nzira, spectroscopy nzira, yemagetsi parameter nzira, photothermal kuramba scanning nzira, nezvimwe. Iyo tembiricha yepasi peiyo LED chip inoyerwa neiyo infrared tembiricha yekuyera maikorosikopu kana miniature thermocouple seyejoni tembiricha ye LED, uye iko kurongeka hakuna kukwana.
Iyo inowanzoshandiswa yemagetsi parameter nzira ndeye kushandisa hunhu hwekuti kudonha kwemagetsi kumberi kweiyo LED PN junction inoenderana neiyo PN junction tembiricha, uye tembiricha yekusangana kweiyo LED inowanikwa nekuyera kumberi kwevoltage kudonha musiyano patembiricha dzakasiyana.