***突破!新的亮度***
<p>随着科技的不断发展,也随着一篇又一篇的LED新闻的不绝于耳,终于迎来了应用在手电上的新一代LED。Cree,一个LED的大厂总算出了一款能另Luxeon焦虑的产品Cree XR-E。或许和大家一样,我也早被所谓的标称流明值给弄麻木了,所以当Cree推出XR-E时我也没去多多关注,直到前两天收到了一支用了Cree XR-E的手电后,我被其亮度不大不小地给惊讶了。</p><p>先说LED。XR-E标称在350ma的电流时有80流明的亮度,由于个体差异所以最低70流明最高95流明。这可是Luxeon I的电流呀,竟然有那么亮吗?差不多和Luxeon III的Tbin一样了。而且XR-E在700ma时更能达到140流明,而且驱动电压只要3.75V。宣传归宣传,手电没到手前,我就先将期待值减了30%,即使是减低30%,700ma亮度应该仍旧有100流明,这也是个不错的发光效率了。</p><p>这支手电是批量生产的之一,外型沿用原来的Aleph 19,不过反光杯进行重新的定制。由于Cree XR-E的发光角度为75度,不同于Luxeon的大发光角度LED,XR-E似乎天生就是来做聚光手电的,只需一个很小口径的反光杯就能投射出非常汇聚的光束。从图上看,相对SF-L6的大碗,XR-E的杯子真是和L1P或Jet差不多,口径才17mm,却能投射出与L6相似的汇聚光斑。XR-E独特的发光角度配上新设计的反光杯使得聚光与Luxeon的1W/3W手电差不多。</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">最重要的就是亮度了,这个手电使用了</span><span lang="EN-US"><font face="Times New Roman">GD825</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">电路,一节</span><span lang="EN-US"><font face="Times New Roman">123a</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">电池或</span><span lang="EN-US"><font face="Times New Roman">16340</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">或更换筒身使用一节</span><span lang="EN-US"><font face="Times New Roman">17670</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">,驱动稳流在</span><span lang="EN-US"><font face="Times New Roman">825ma</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">左右,我的实测亮度约</span><span lang="EN-US"><font face="Times New Roman">114</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">流明,绝对亮!</span><span lang="EN-US"><font face="Times New Roman">700ma</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">驱动时也有近</span><span lang="EN-US"><font face="Times New Roman">100</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">流明,足够比拼</span><span lang="EN-US"><font face="Times New Roman">Luxeon</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">的</span><span lang="EN-US"><font face="Times New Roman">5W</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">。而且驱动电压低好多,环顾四周,目前还没有</span><span lang="EN-US"><font face="Times New Roman">Luxeon</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">的</span><span lang="EN-US"><font face="Times New Roman">5W</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">可以用单个</span><span lang="EN-US"><font face="Times New Roman">123a</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">来驱动的,就算</span><span lang="EN-US"><font face="Times New Roman">SF</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">-</span><span lang="EN-US"><font face="Times New Roman">KL4</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">最少也要</span><span lang="EN-US"><font face="Times New Roman">3.7V</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">的</span><span lang="EN-US"><font face="Times New Roman">16340</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">才能工作。据</span><span lang="EN-US"><font face="Times New Roman">CPF</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">上大师人物</span><span lang="EN-US"><font face="Times New Roman">McGizmo</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">介绍,在连续测试了数月后,与</span><span lang="EN-US"><font face="Times New Roman">Luxeon</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">相比,要发出相同的亮度,</span><span lang="EN-US"><font face="Times New Roman">XR-E</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">只需约</span><span lang="EN-US"><font face="Times New Roman">Luxeon</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">一半的电力支持,热量也只有一半。经过</span><span lang="EN-US"><font face="Times New Roman">McGizmo</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">用积分球实测,一节</span><span lang="EN-US"><font face="Times New Roman">CR123a</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">锂电</span><span lang="EN-US"><font face="Times New Roman">700ma</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">驱动</span><span lang="EN-US"><font face="Times New Roman">XR-E</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">时亮度在</span><span lang="EN-US"><font face="Times New Roman">97.8</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">流明至</span><span lang="EN-US"><font face="Times New Roman">103.5</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">流明。从光斑对比图中可以看出</span><span lang="EN-US"><font face="Times New Roman">XR-E</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">要比</span><span lang="EN-US"><font face="Times New Roman">L6</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">还亮,更比</span><span lang="EN-US"><font face="Times New Roman">L4</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: \'Times New Roman\'; mso-hansi-font-family: \'Times New Roman\';">亮许多。</span><span lang="EN-US"><br/> <p></p></span></p><p></p><p></p><p></p><p></p><p>XR-E的另一特点是热量控制出色,才约Luxeon V的一半,怪不得Luxeon 5W的效率那么低了,Cree的效率和热量控制比较好,看来Luxeon要抓紧了,特别是与K2相比,两者的售价是同一价位的,约5~7美金。K2这样的产品继续下去是比拼不过Cree的。呵呵,现在总算又多了一种令人满意的高光效LED。还有不确定传言说Surefire也会在一年内推出XR-E的手电新品,不管真假与否,XR-E已经批量供应市场,并开始真正应用在手电上了。</p><p>这支手电用123a时续航约60分钟,90%以上高亮时间约30分钟。暂时没有16340或17670的续航数据,由于充电电池更高的电压支持,用16340时估计90%以上高亮时间在45分钟左右;17670估计能超过90分钟。我懒得做测试,还是等着老外的试验结果吧。<br/></p><br/><br/><br/><br/><br/><br/><br/><br/>[此贴子已经被作者于2006-10-30 17:07:45编辑过]
<p>好东西,不顶不行,呵呵~ </p> 光色比L6白多了! 这个月的新货.吼吼.有TI版的<strong><font face="Verdana">erin0919</font></strong>要去搞个喔 多少米啊? <p>估计贼贵,买不起,看看解馋吧,哈哈哈……</p> 发射角小了. 泛光好. 要远射 可能更适合用透镜. <div><strong>Microfire HID vs. CREE XR-E</strong></div><div><strong><a href="http://www.candlepowerforums.com/vb/showthread.php?t=139069">http://www.candlepowerforums.com/vb/showthread.php?t=139069</a></strong></div> <p>袁兄總是有最好的東西提供大家...可是它的尺寸與LS的好像有一點差別用LS規格的透鏡應該不能裝..</p><p>LED光源種算有點進展..價格又與K2差不多.</p> 发光角度75度?这样要求更深的反光杯才能收集到足够的光线了。对于反光碗来说,发光角度是越大越容易收集。 <p>适合透镜,这东西这么小角度设计来就是用透镜的。</p><p>原厂也有配套的透镜,就是贵了些,要是有兼容的便宜透镜就好了</p> 不知道LED的寿命是多少小时? <p>对技术规范有兴趣的,这里有各种官方文档下载:</p><p><a href="http://www.cree.com/products/xlamp_docs.asp">http://www.cree.com/products/xlamp_docs.asp</a></p> <p>这个手电现在好像还有现货卖,而且型号在不断增加,我的入手价格一千九百多(不含运费)。</p><p>现在就等着McGizmo出钛的,呵呵:)</p>
[此贴子已经被作者于2006-10-30 21:11:06编辑过]
<div class="quote"><b>以下是引用<i>电筒迷</i>在2006-10-30 18:57:01的发言:</b><br/>不知道LED的寿命是多少小时?</div><p></p>寿命不必担心,大厂的东西应该不差。 有竞争是好事,这样才能促进发展。好! 好东西,拿下他,呵呵 老张也想办法进这个做手电吧!!!!牛B的很!!!! <p>期待呀......</p> <font size="4">看图就觉得够亮,中心亮度够高,泛光也强,期待了</font>