Thorlabs鍍有保(bao)(bao)護層銀膜的(de)反射(she)(she)式準(zhun)(zhun)直(zhi)(zhi)器(qi)基于90°離(li)軸拋(pao)物(wu)面(mian)反射(she)(she)鏡(jing)。和透鏡(jing)不(bu)一樣的(de)是，金屬(shu)反射(she)(she)鏡(jing)的(de)焦距(ju)在寬波(bo)(bo)長(chang)范(fan)圍內保(bao)(bao)持不(bu)變(bian)。由(you)于這種固有屬(shu)性(xing)，拋(pao)物(wu)面(mian)反射(she)(she)鏡(jing)準(zhun)(zhun)直(zhi)(zhi)器(qi)不(bu)需要(yao)調節就(jiu)能準(zhun)(zhun)直(zhi)(zhi)不(bu)同波(bo)(bo)長(chang)的(de)光(guang)，因此非常(chang)適合用于多(duo)色(se)光(guang)。常(chang)見應用包括需要(yao)準(zhun)(zhun)直(zhi)(zhi)多(duo)個波(bo)(bo)長(chang)的(de)系統、紅外準(zhun)(zhun)直(zhi)(zhi)/耦合以及將(jiang)多(duo)色(se)光(guang)耦合到大芯(xin)徑多(duo)模光(guang)纖中(zhong)。

鍍(du)有保護(hu)層銀膜的(de)反(fan)(fan)射式(shi)準(zhun)(zhun)(zhun)直器在450 nm到20 µm波(bo)長范圍提供高反(fan)(fan)射率(lv)。在可見(jian)光(guang)(guang)和紅外(wai)波(bo)段工作的(de)多(duo)波(bo)長系統中(zhong)，這些(xie)反(fan)(fan)射型準(zhun)(zhun)(zhun)直器既可將多(duo)色(se)準(zhun)(zhun)(zhun)直光(guang)(guang)耦合到大芯(xin)徑(jing)多(duo)模光(guang)(guang)纖(xian)(xian)(xian)中(zhong)，又可準(zhun)(zhun)(zhun)直光(guang)(guang)纖(xian)(xian)(xian)發(fa)射的(de)多(duo)色(se)光(guang)(guang)。注(zhu)意，一般(ban)而(er)言(yan)，多(duo)模光(guang)(guang)纖(xian)(xian)(xian)發(fa)出(chu)的(de)光(guang)(guang)無(wu)法理(li)想(xiang)準(zhun)(zhun)(zhun)直。準(zhun)(zhun)(zhun)直多(duo)模光(guang)(guang)纖(xian)(xian)(xian)跳線(xian)發(fa)出(chu)的(de)光(guang)(guang)時(shi)，光(guang)(guang)纖(xian)(xian)(xian)的(de)數值孔徑(jing)應該(gai)< 0.40(RC02)，< 0.36(RC04)，< 0.167(RC08)或< 0.216(RC12)，以防外(wai)殼(ke)阻擋部分光(guang)(guang)。

RC02、RC04和RC08反射式準(zhun)直(zhi)(zhi)器(qi)外(wai)殼帶(dai)有SM05(0.535"-40)外(wai)螺紋，而RC12準(zhun)直(zhi)(zhi)器(qi)外(wai)殼帶(dai)有SM1(1.035"-40)外(wai)螺紋。因此這些準(zhun)直(zhi)(zhi)器(qi)直(zhi)(zhi)接(jie)兼容SM05或(huo)(huo)SM1螺紋光機(ji)械，比如LMR05或(huo)(huo)LMR1。RC02準(zhun)直(zhi)(zhi)器(qi)后(hou)部加工成Ø1/2英寸(cun)，可以直(zhi)(zhi)接(jie)安(an)(an)裝(zhuang)到Ø1/2英寸(cun)光學調整(zheng)架(jia)中(zhong)。此外(wai)，拆下(xia)RC02、RC04或(huo)(huo)RC08外(wai)殼前面的滾(gun)花環(huan)，再使用SPW909扳(ban)手(shou)或(huo)(huo)SPW801可調扳(ban)手(shou)將其靠著(zhu)Ø1英寸(cun)沉頭孔的后(hou)凸(tu)緣擰入，就直(zhi)(zhi)接(jie)安(an)(an)裝(zhuang)到了(le)Ø1英寸(cun)光學調整(zheng)架(jia)中(zhong)。然后(hou)，擰緊(jin)安(an)(an)裝(zhuang)座的固(gu)定(ding)螺絲，就可以固(gu)定(ding)準(zhun)直(zhi)(zhi)器(qi)。

用于(yu)制造(zao)離(li)軸(zhou)拋物面(mian)反射鏡的金剛石車削工藝(yi)可以實現< 100 Å RMS的表(biao)面(mian)粗糙度(du)(du)，以大程度(du)(du)地(di)減少反射鏡表(biao)面(mian)的散射(在633 nm下約為2%)。

Thorlabs也提(ti)供鍍(du)紫外增(zeng)強型鋁(lv)膜的反射式準直(zhi)器，用于250 - 450 nm波長(chang)范圍。

• 消色差設計，準直反射鏡的整個反射帶
• 有保護層的銀膜(450 nm - 20 µm)提供高反射率
• 非常適合將多色光耦合到多模光纖中
• 表面粗糙度：小于100 Å(RMS)
• 通光孔徑：Ø7.5 mm、Ø11 mm或Ø22 mm
• 無磁不銹鋼外殼

Thorlabs提(ti)供(gong)單模、保偏(pian)和(he)多模光纖(xian)(xian)(xian)(xian)跳(tiao)(tiao)線(xian)，用于耦合和(he)準(zhun)直應用。我們也(ye)提(ti)供(gong)低(di)插入(ru)損(sun)耗光纖(xian)(xian)(xian)(xian)跳(tiao)(tiao)線(xian)，它們采(cai)用纖(xian)(xian)(xian)(xian)芯同(tong)心度(du)更好的單模光纖(xian)(xian)(xian)(xian)，所以插入(ru)損(sun)耗更低(di)，透(tou)過率更高(gao)。如果我們庫存中沒有(you)您所需的光纖(xian)(xian)(xian)(xian)跳(tiao)(tiao)線(xian)，Thorlabs還提(ti)供(gong)可當天發(fa)貨的定(ding)制光纖(xian)(xian)(xian)(xian)跳(tiao)(tiao)線(xian)。