一、氙氣閃光燈是什么意思

氙(xian)氣(qi)(qi)閃光(guang)(guang)燈(deng)，又(you)稱高(gao)(gao)強度(du)(du)氣(qi)(qi)體(ti)放電(dian)(dian)閃光(guang)(guang)燈(deng)。氙(xian)氣(qi)(qi)閃光(guang)(guang)燈(deng)由氙(xian)氣(qi)(qi)燈(deng)泡、變壓(ya)(ya)安定器和絕緣導(dao)線(xian)組成，利用特殊氙(xian)氣(qi)(qi)體(ti)在(zai)超高(gao)(gao)電(dian)(dian)壓(ya)(ya)狀態下擊發放電(dian)(dian)。其工作原理(li)是，通過相(xiang)機的觸點(dian)觸發后(hou)，通過變壓(ya)(ya)器，在(zai)瞬間內將12V電(dian)(dian)源升至2萬伏以上(shang)的高(gao)(gao)壓(ya)(ya)脈沖電(dian)(dian)壓(ya)(ya)，激活(huo)氙(xian)氣(qi)(qi)燈(deng)泡中(zhong)的氙(xian)氣(qi)(qi)在(zai)電(dian)(dian)弧中(zhong)產生6000K--10000K色(se)溫(wen)度(du)(du)的強勁光(guang)(guang)芒，顏(yan)色(se)呈晶鉆白中(zhong)略帶紫藍。

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二、氙氣閃光燈與LED閃光燈的區別有哪些

1、概念形式不同

（1）氙氣閃光燈：氙(xian)(xian)氣(qi)(qi)（讀音xian）是惰(duo)(duo)性氣(qi)(qi)體中(zhong)原(yuan)子(zi)(zi)序數較大的(de)元素(su)（也就是較重的(de)元素(su)），原(yuan)子(zi)(zi)半徑(jing)較大。在弧光放電(dian)(dian)(dian)(dian)中(zhong)，電(dian)(dian)(dian)(dian)子(zi)(zi)與氣(qi)(qi)體發(fa)生彈性碰撞損失的(de)能量同(tong)(tong)氣(qi)(qi)體的(de)原(yuan)子(zi)(zi)量成反比，所(suo)以與其他惰(duo)(duo)性氣(qi)(qi)體相比氙(xian)(xian)氣(qi)(qi)弧光放電(dian)(dian)(dian)(dian)時損失較小，發(fa)光效(xiao)率(lv)高。同(tong)(tong)時，氙(xian)(xian)氣(qi)(qi)的(de)電(dian)(dian)(dian)(dian)離電(dian)(dian)(dian)(dian)勢較低，放電(dian)(dian)(dian)(dian)時電(dian)(dian)(dian)(dian)極附近的(de)電(dian)(dian)(dian)(dian)壓降小，這樣可以延長電(dian)(dian)(dian)(dian)極的(de)壽命(ming)。又由于氙(xian)(xian)原(yuan)子(zi)(zi)結構(gou)的(de)特點，長弧氙(xian)(xian)燈發(fa)出(chu)的(de)光譜和(he)日光非(fei)常接近。

（2）LED閃光燈：LED是(shi)英文(wen)ightemitting diode（發光(guang)二(er)極(ji)管(guan)）的縮寫，它(ta)的基本結構是(shi)一塊(kuai)電致發光(guang)的半(ban)導體材料，置于一個(ge)有引(yin)線(xian)的架子上，然后(hou)四周用環氧(yang)樹脂密封(feng)，起到保護內部芯線(xian)的作(zuo)用。LED燈由于能耗(hao)低亮度高(gao)一般用在(zai)拍照手(shou)機上，用于光(guang)線(xian)不(bu)補(bu)(bu)時的補(bu)(bu)光(guang)。

2、作用原理不同

（1）氙氣閃光燈原理：當按下快(kuai)門(men)時，快(kuai)門(men)反饋給CPU一(yi)個(ge)信(xin)號，同(tong)時，CPU同(tong)步向三(san)極管輸出(chu)一(yi)個(ge)控制(zhi)信(xin)號觸發(fa)電(dian)路，進行閃(shan)光(guang)。接著三(san)極管導通(tong)，使(shi)(shi)觸發(fa)電(dian)容開(kai)始放電(dian)，在變壓器(qi)的(de)(de)初(chu)級(ji)上(shang)(shang)產生一(yi)個(ge)脈沖電(dian)流，這個(ge)電(dian)流有使(shi)(shi)變壓器(qi)的(de)(de)次級(ji)產生近4000v的(de)(de)高壓，激發(fa)閃(shan)光(guang)燈內部疝氣電(dian)離并導通(tong)。使(shi)(shi)電(dian)容上(shang)(shang)存儲的(de)(de)電(dian)能(neng)瞬間通(tong)過閃(shan)光(guang)燈管放電(dian)轉化為光(guang)能(neng)，完成一(yi)次閃(shan)光(guang)。

（2）LED閃光燈的原理：LED并(bing)不是通(tong)過原(yuan)子(zi)(zi)內部的(de)電(dian)子(zi)(zi)躍(yue)變(bian)(bian)來發光的(de)，而是通(tong)過將(jiang)電(dian)壓加在(zai)LED的(de)PN結兩端，使PN結本身形成(cheng)一個能級，然后(hou)電(dian)子(zi)(zi)在(zai)這個能級上(shang)躍(yue)變(bian)(bian)并(bing)產生光子(zi)(zi)來發光的(de)。