Sida aan wada ognahay, waxaa jira laba hab oo tijaabo ah oo lagu sheegay CIE121: 1966 Farqada 6.1, CIE127-2007 faqradda 6.2, iyo IES-LM-79-08 Farqada 9.0: Mid waa in la isticmaalo goob isku dhafan oo lagu daray sawir-qaade ama spectroradiometer si loo tijaabiyo Iftiinka iftiinka LED. Habka isku dhafan waa habka cabbiraadda qaraabada ee isugeynta iftiinka iftiinka (CIE121: 1966 Farqada 6.1.1, CIE127-2007 Farqada 6.2.2, iyo IES-LM-79-08 Farqada 9.0). Midda kale waa habka sawir-qaadista iyadoo la isticmaalayo goniophotometer. Kani waa habka cabbiraadda buuxda ee wadarta qulqulka iftiinka. Haddii aan isticmaalno habka isku dhafan iyo habka sawir-qaadista si aan u tijaabino isla laambad, isbarbardhigga natiijooyinka baaritaanka, waxaan ogaan doonnaa in wadarta xogta iftiinka iftiinka ee ay tijaabiyeen labadoodu ay aad u kala duwan yihiin. Maqaalkani wuxuu diiradda saarayaa farqiga u dhexeeya tijaabada lumen ee nalalka LED-ka ee isdhexgalka iyo goniopotometerka.
Mabda'a habka isku dhafan ee lagu tijaabiyo wadarta iftiinka iftiinka waa in la qiyaaso heerka qulqulka iftiinka. Maadaama lagu qiyaaso nalka caadiga ah, ma aha lagama maarmaan in la ogaado wax soo saarka spectral of sphere. Qulqulka iftiinka φTEST (λ) ee alaabta nalka LED ee la tijaabiyay waxaa lagu xisaabiyaa iyadoo la barbar dhigayo nalka caadiga ah. Guud ahaan, habka is dhexgalku wuxuu ku habboon yahay nalalka LED-ka ee isku-dhafan ee yar yar iyo ilo iftiin yar oo LED ah si loo tijaabiyo wadarta qulqulka iftiinka iyo cabbirrada chromaticity. Tani waa habka tijaabada isbarbardhigga ee wadarta qulqulka iftiinka. Habka isdhexgalka ayaa leh faa'iidooyinka xawaaraha cabbirka degdegga ah iyo ma jiro qol mugdi ah. Mugga yar, oo u dhow isha iftiinka, ayaa si sax ah natiijada imtixaanka.
Si kastaba ha noqotee, marka la isticmaalayo habka muhiimka ah si loo tijaabiyo nalalka LED-ga ee cabbirka weyn, xaddidadeedu waa mid aad u weyn marka la barbardhigo habka sawir-qaadista. Habka ugu horreeya waa in la isticmaalo qalab tijaabo ah oo muhiim ah, nalalka LED-ku waxay wajahayaan qaabab kala duwan, ilaha iftiinka LED-ka, nalalka LED-yada, nalalka LED-ka, iwm, iyo nooca nalka LED-ka ayaa saameyn weyn ku leh finalka tijaabada qulqulka iftiinka. Isla mar ahaantaana, iyadoo la adeegsanayo habka isdhexgalka ayaa sidoo kale u baahan in la sameeyo hagaajinta isdhexgalka. Guud ahaan, haddii aad tijaabinayso nalalka LED-ka, nalka caadiga ahi wuxuu u baahan yahay inuu yeesho sifooyin iftiin leh oo la mid ah nalka tijaabada, iyo LED cad oo deggan ayaa ah doorashada ugu fiican. Dabcan, noocyada kale ee nalalka ayaa sidoo kale loo isticmaali karaa sida isha iftiinka ee cabbirka, laakiin tani waxay saameyn doontaa saxnaanta cabbirka. Midda labaad waa farqiga uu keenay habka imtixaanku: Guud ahaan, haddii nalka tijaabada ku jira uu u iftiimay agagaarka, waxaa lagama maarmaan ah in la isticmaalo habka tijaabada 4π si loogu rakibo laambadda tijaabada ee bartamaha wareegga isdhexgalka (IESLM). -79-08 faqradda 9.2.5). Baaritaanka noocaan ah wuxuu leeyahay saameynta ugu wanaagsan. Haddii nalalku ay yihiin iftiin jihada ah, sida nalalka LED-ka, nalalka waddooyinka, iwm., nalka tijaabada ku jira wuxuu u baahan yahay in lagu rakibo dhinaca dhinaca isku dhafka ah ee tijaabada 2π (IESLM-79-08 Farqada 9.2.5) . 4π isku dhafka cabbirka habka tijaabada, haddii awoodda la cabbiray ee laambada ama laambada gurigu ay ku jirto dhammaan nalka weyn oo cabbirkiisu weyn yahay, ka badan ama ka yar wakhtiga tijaabinta saamaynta is-nuugista, baahida loo qabo isticmaalka wakhtigan si loo sameeyo Kor u qaadida laambadda caawimada (IESLM-79-08 Farqada 9.1.5). Guud ahaan, habka is-dhexgalka ayaa ku habboon nalalka LED-ka ee isku-dhafan ee yar-yar iyo ilo iftiin yar oo LED ah. Isticmaalka habka isdhexgalka si loo tijaabiyo nalalka LED-yada noocan oo kale ah waxay hubin karaan saxnaanta iyo xasilloonida wadarta natiijooyinka iftiinka iftiinka, tusaale ahaan, marka la tijaabinayo nalalka LED-ga ee cabbirka weyn. , Xaddidaadda habka isku dhafan waa mid weyn. Sababta ayaa ah, sida kor lagu soo sheegay, iyo wadarta guud ee tijaabada iftiinka iftiinka ayaa leh heer cayiman oo hubaal ah.
Isticmaalka tijaabada spectrophotometric Wadarta qulqulka iftiinka ee la qaybiyo sawir-qaade, wadarta guud ee qulqulka iftiinka ayaa xaddidan. Photometric Tijaabada wadarta guud ee qulqulka iftiinka ee qadarka ugu sarreeya ee cabbiraadda iftiinka iftiinka waxaa loo qaybiyaa jihooyin badan oo kala duwan oo isha iftiinka ah (ama iftiinka meel fog laga keenay isha iftiinka) xoogga iftiinka qalabka, xogta xoogga iftiinka ee jihada kasta. Si loo xisaabiyo wadarta qulqulka iftiinka. Marka la barbardhigo habka isku dhafan, sababtoo ah kala duwanaanshaha qaybinta xoogga ee isha iftiinka tijaabada, habka sawir-qaadista wax qalad ah kuma laha aragtida, sidaas darteed waa hab tijaabo ah oo dhammaystiran oo loogu talagalay wadarta iftiinka iftiinka ee LED-ka. Uma baahna wadarta guud ee qulqulka iftiinka, laakiin waxay qaadataa wakhti dheer muunad kasta-waqtiga cabbirka. Qaadashada habka sawir-qaadista, tijaabada Goniophotometer waxay ku lug yeelan doontaa Nooca C Goniophotometer (IES-LM-79-08 Farqada 9.3.1, CIE121: 1996 Farqada 3.2) qolka mugdiga ah, fogaanta tijaabada (IES-LM-79-08 Farqada 9.3, CIE121: 1996 Farqada 6.2.1.4), Iyo wixi la mida. Qodobbada ugu muhiimsan ee saameeya farqiga u dhexeeya wadarta wax soo saarka iftiinka iftiinka ee goniophotometer waa nooca goniophotometer, habka tijaabada (CIE121: 1996 Farqada 3.4.2, Farqada 3.4.1 iyo faqrada 3.4.3), fogaanta tijaabada, Nalalka baaritaanka sawir-qaadista, iwm., marka loo eego si loo tijaabiyo noocyada kala duwan ee alaabada LED, waxaan hagaajin karnaa hababka tijaabada ama qalabka ku habboon; Haddii aan la kulanno alaabada LED-ka oo leh xagal cidhiidhi ah, waxaan dooran karnaa Goniophotometer yar, dooran nooca C Goniophotometer, hagaajinta fogaanta tijaabada, oo dooro heer sare oo heer sare ah Fasalka L sawir-qaadista sawir-qaadista waxay gaari karaan imtixaan sax ah oo sarreeya oo ah wadarta iftiinka iftiinka. Marka la tijaabinayo wadarta iftiinka iftiinka LED-ka, tijaabada sawir-qaadista waxay gaari kartaa cabbirka saxda ah ee ugu sarreeya. Sababtoo ah xaddidaadaha dabiiciga ah ee habka isdhexgalka, way adagtahay in la baabi'iyo qaladka iyada oo loo marayo hagaajinta qalabka, oo kaliya waxay yareyn kartaa qaladkan. Isla mar ahaantaana, tijaabada photometric Qalabka loo baahan yahay laftiisa ma aha mid aad u xaddidan, sidaas darteed qaladka waxaa lagu magdhabi karaa iyada oo la hagaajinayo habaynta iyo hawlgalka qalabka.
Sida kor lagu sharaxay, mid ka mid ah siyaabaha ugu fudud ee lagu cabbiro qulqulka iftiinka iftiinka LED waa in la isticmaalo sawir-qaade isugeyn ah. Waa qalab isku-dhafan oo muuqaal ahaan isku dhafan. Isticmaalka fogaanta sawir qaade go'an si loo cabbiro wadarta guud ee cabbiraadda waa mid degdeg ah oo fudud. Isticmaal iskudarka qulqulka iftiinka iftiinka si aad u cabbirto sawir mitirka is dhexgalka. Isha iftiinka tijaabada waxaa lagu cabbiraa marka la barbardhigo isha iftiinka caadiga ah oo leh qaybin muuqaal iyo muuqaal la mid ah. Sidaa darteed, habkani wuxuu u baahan yahay il iftiin caadi ah oo loo habeeyey qulqulka iftiinka. Marka la barbar dhigo tijaabiyaha qaybinta iftiinka, xawaaraha imtixaanku aad ayuu u dheereeyaa, laakiin marka baaxadda baaxadda baaxadda ee LED-ka tijaabada ah, iyo isha iftiinka caadiga ahi aanu la mid ahayn, way fududahay in la soo saaro khaladaadka. Qaladka noocan oo kale ah way adag tahay in la saxo, markaa waa inay ahaataa iyada oo loo marayo joomatari naqshad aad u fiican iyo noocyada la midka ah ee LED-yada caadiga ah si loo yareeyo khaladkan.
Sidii hore loo soo sheegay, qaabka ugu dhow ee qalabka tijaabada ayaa ah isha iftiinka, inta badan ee saxda ah ee natiijada isku dhafka ah ee isdhexgalka ayaa noqon doonta. Marka marka aan u baahanahay inaan tijaabino qiimaha lumen ee nalalka, nalalka guluubka, nalalka LED-yada yar yar, nalalka LED-ka ee isku dhafan, tuubooyinka laambada, iyo nalalka kale ee leh xagal alwaax ka weyn 180 °, waxaan u isticmaali karnaa isdhexgalka isdhexgalka oo leh spectrometer tijaabo 4π . Nalalka waaweyn, nalalka translucent, nalalka taraafigga, iyo laambadaha kale ee leh xagal iftiin ka yar 180 °, haddii aad rabto in aad isticmaasho goob isdhexgalka si aad u tijaabiso, waxaad u baahan tahay inaad isticmaasho goob isku dhafan oo leh meelo bannaan oo dhinac ah oo loogu talagalay 2π tijaabinta ama isticmaal nalal caawin Caawinta Imtixaanka, habka imtixaanku waa mid caajis ah oo aan la hubin. Habka ugu saxsan ee tijaabada laambada noocan ah waa in la isticmaalo goniophotometer oo leh qol madow oo caadi ah oo lagu baaro. Waxa uu heli karaa qulqul iftiin badan oo sax ah. Si kastaba ha noqotee, marka wakhtiga tijaabada ee sawir-qaadaha la qaybiyo, kala duwanaanshaha habka tijaabada waa in la ogaadaa in, sida nalka guddiga guud ahaan loo isticmaalo tijaabada C-γ, nalalka taraafigga iyo iftiinka guud ahaan waxay ku taliyaan baaritaanka B-β; sidoo kale waxay u baahan yihiin Heerarka Qolka mugdigu wuxuu u baahan yahay jawi tijaabo oo xirfad leh iyo shaqaale imtixaan si ay u shaqeeyaan marka la barbar dhigo imtixaanka isdhexgalka.
Marka la soo koobo, mabaadi'da cabbiraadda, deegaanka, iyo hababka tijaabinta ee isdhexgalka sphere iyo goniophotometer way kala duwan yihiin, natiijooyinka cabbiraadda labadooduna ma aha kuwo is barbar dhig ah. Waxaan dooran karnaa hab ku habboon tijaabinta iyadoo loo eegayo heerar kala duwan iyo shuruudo kala duwan.
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