Led 燈珠熒光 LED紫光燈珠 |
| 發布時間:2022-08-21 13:20:41 |
大家好今天來(lai)介紹Led 燈(deng)珠熒(ying)光(燈(deng)關(guan)了以(yi)后有熒(ying)光)的問題(ti)，以(yi)下是小編(bian)對此問題(ti)的歸(gui)納(na)整(zheng)理，來(lai)看看吧。 文章目錄列表:led燈關了電還有熒光是為什么LED燈，是一種對電流極其敏感的器件，極其微弱的電流就可以發光，它的工作電壓也很低，僅3.4V左右，而市電電網電壓是220V的較高電壓，很容易產生漏電流，也很容易在電路中產生感應電壓、感應電流，在LED的驅動電路又比較簡單時，即使這種漏電流或感應電壓、感應電流很小，也足以使LED燈發出微弱的光。有時在斷電之后，驅動器電路中的電容還會存儲一些電能，來不及釋放，會使LED發光延續一段時間，電能釋放完了之后，才能熄滅。如果是漏電，或感應電，就會長時間有微光，不過電流很小，不會影響LED的壽命，耗電也極其微弱，不會影響您的計費，這不算什么大問題，不必擔心。
紫光LED燈珠的使用要注意什么要看紫光(guang)LED燈(deng)珠的波長，紫光(guang)LED燈(deng)珠常見用途： 1：殺菌消毒需要的紫(zi)光(guang)LED波長一(yi)般是250nm左右； 2：驗鈔燈的(de)紫外線波長400nm左右； 3：引誘蚊(wen)蟲(chong)的紫外線波長(chang)400nm左(zuo)右； 4：玉石珠寶鑒定的紫光LED波(bo)長400nm左右； 5：少部分植(zhi)物(wu)生長用到395-420nm范圍的(de)紫光(guang)LED燈(deng)珠。除此之外，紫光(guang)LED燈(deng)珠可以讓(rang)熒(ying)光(guang)物(wu)質發光(guang)，用于熒(ying)光(guang)反射等其它一(yi)些用途。 LED燈珠上面黃色膠是什么是熒光膠，具體含(han)義： 熒光(guang)膠是一(yi)種(zhong)有(you)機硅(gui)彈性(xing)體材料。 熒光(guang)膠是雙組分、加熱(re)固化有(you)機硅彈性體材(cai)料，用于LED封(feng)裝。固化后具有(you)透光(guang)率高，折射(she)率高，熱(re)穩定性好，應(ying)力小，吸濕性低等特(te)點。 技術(shu)參數： 項目技術(shu)參數固化前 （A組分）外觀無色透(tou)(tou)明液體(ti)粘度Pa·s（25℃）4固化前 （B組分）外觀無色透(tou)(tou)明液體(ti)粘度Pa·s（25℃）4使用比列1：1混(hun)合后粘度mPa·s（25℃）4500典型(xing)固化條件(jian)150℃×1h固化后外觀高透(tou)(tou)明彈性體(ti)硬度（ShoreA）52折射(she)率（25℃）1.53透(tou)(tou)光率（%、450 nm）﹥95。 led燈關了電還有熒光是為什么LED燈(deng)，是一(yi)(yi)種(zhong)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)極(ji)其敏感(gan)的器件，極(ji)其微(wei)(wei)弱的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)就可以(yi)發光(guang)(guang)，它的工(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓也(ye)(ye)(ye)很低(di)，僅(jin)3.4V左右，而市電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓是220V的較高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，很容(rong)易(yi)產(chan)生(sheng)漏(lou)(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，也(ye)(ye)(ye)很容(rong)易(yi)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中產(chan)生(sheng)感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓、感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，在(zai)LED的驅動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)又比較簡單(dan)時，即使這種(zhong)漏(lou)(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)或感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓、感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)很小，也(ye)(ye)(ye)足(zu)以(yi)使LED燈(deng)發出微(wei)(wei)弱的光(guang)(guang)。有時在(zai)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)之后，驅動器電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)還會(hui)(hui)(hui)存儲(chu)一(yi)(yi)些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)，來不及釋放(fang)，會(hui)(hui)(hui)使LED發光(guang)(guang)延續一(yi)(yi)段時間，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)釋放(fang)完了之后，才(cai)能(neng)熄滅。如果是漏(lou)(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，或感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，就會(hui)(hui)(hui)長時間有微(wei)(wei)光(guang)(guang)，不過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)很小，不會(hui)(hui)(hui)影響LED的壽命(ming)，耗電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)也(ye)(ye)(ye)極(ji)其微(wei)(wei)弱，不會(hui)(hui)(hui)影響您的計費，這不算什(shen)么大問題，不必(bi)擔心。而白熾燈(deng)和熒(ying)光(guang)(guang)燈(deng)，均需要較高(gao)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓才(cai)能(neng)工(gong)作(zuo)，也(ye)(ye)(ye)不像LED這樣敏感(gan)，所以(yi)不會(hui)(hui)(hui)出現類似發微(wei)(wei)光(guang)(guang)現象 LED透鏡切線上方有黃色光斑正常么肯定是不正常的。 半導體材料的(de)(de)發光(guang)機理決(jue)定了單一的(de)(de)led芯片無法發出連續光(guang)譜的(de)(de)白光(guang)，因此工藝上必須混合兩(liang)種以(yi)上互補色的(de)(de)光(guang)而形成白光(guang)。 目前實現白(bai)光(guang)(guang)(guang)led的方法主要有三種：藍光(guang)(guang)(guang)led+yag黃色熒光(guang)(guang)(guang)粉，rgb三色led和紫(zi)外led+多色熒光(guang)(guang)(guang)粉，而(er)白(bai)光(guang)(guang)(guang)led的實現都是(shi)在封裝(zhuang)環(huan)節(jie)，因此封裝(zhuang)工藝對于白(bai)光(guang)(guang)(guang)led燈珠的質(zhi)量至關重要。 目前市場上普(pu)通的白光(guang)貼片(pian)led燈珠(zhu)都是支架杯內直接填(tian)滿熒光(guang)膠體，使(shi)得(de)芯(xin)片(pian)與(yu)熒光(guang)粉通過(guo)激發發光(guang)，但是市場上的白光(guang)led燈珠(zhu)在使(shi)用過(guo)程中(zhong)發現打光(guang)會出現黃色光(guang)斑(ban)，而且黃色光(guang)斑(ban)透(tou)過(guo)外加光(guang)學透(tou)鏡也(ye)無法消除，影響了led燈珠(zhu)的使(shi)用效果。 以(yi)上(shang)就是小編對(dui)于Led 燈珠(zhu)熒(ying)(ying)光(燈關(guan)了(le)以(yi)后有熒(ying)(ying)光)問題(ti)和相關(guan)問題(ti)的解答了(le)，希望對(dui)你有用 |
