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<table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83593"> <div class="quote"><blockquote><strong>下面引用由<u>jamesleng</u>在 <i>2004/02/26 11:46am</i> 发表的内容：</strong><br /> 一般的3片的PANEL都是要求用到远心光路，否则在象素的重合上容易产生对准误差。<br /> 如果不是远心光路可以通过OFFSET STOP APERTURE来实现，道理很简单，主光线不对称，只能改变光栏，使光栏不关于光轴对称。<br /> 同意否？</blockquote></div>同意</td></tr></table> </div> <div id="comment_83593" class="cm"> </div> <div id="post_rate_div_83593"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83593"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83593&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83593&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = 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的chief ray平行<br /> 但真实系统是很难做到 <br /> 所以一般定义pupil的位置 <br /> <br /> 离轴设计是指0-filed的chief ray 和镜轴不平行<br /> 当然加大像高是一个方法<br /> 但这样镜头会大很多<br /> 如果要离轴一半很多 那这方法下 镜头会大将近两倍<br /> 这是我个人想法 参考看看吧<br /> </td></tr></table> </div> <div id="comment_83594" class="cm"> </div> <div id="post_rate_div_83594"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83594"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83594&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83594&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_83594').innerHTML ? $('review_support_83594').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_83594"></span></a> <a 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href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83595" id="postnum83595" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>15</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83595" src="static/image/common/ico_lz.png" /> 楼主<span class="pipe">|</span> <em id="authorposton83595">发表于 2004-2-27 08:32:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=1453" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83595"> [这个贴子最后由clearwaterqq在 2004/02/27 00:37am 第 1 次编辑]<br /> <br /> ^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^<br /> 远心是指telecentric吧<br /> 如果是 是指all field 的chief ray平行<br /> 但真实系统是很难做到 <br /> 所以一般定义pupil的位置<br /> ^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^<br /> We know,<br /> telecentric system: EP or XP is at infinite, as shown in Fig above.<br /> <br /> ^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^<br /> 离轴设计是指0-filed的chief ray 和镜轴不平行<br /> 当然加大像高是一个方法<br /> 但这样镜头会大很多<br /> 如果要离轴一半很多 那这方法下 镜头会大将近两倍<br /> 这是我个人想法 参考看看吧<br /> ^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^^.^<br /> 同意!<br /> <br /> 设计像面中心OFFSET的PROJECTION LENS，用远心系统加大像高的方法是否真的可行？<br /> 还是象Samsung一样，将STOP做一些OFFSET。<br /> 还是有其它方法？<br /> 1)telecentric system<br /> 2)离轴fiels lens<br /> 3)convertional lens with stop offset<br /> <br /> </td></tr></table> </div> <div id="comment_83595" class="cm"> </div> <div id="post_rate_div_83595"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83595"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83595&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a 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cellpadding="0"><tr><td class="t_f" id="postmessage_83596"> 用这个做projection lens如何？<br /> F/2 FOV=38deg</td></tr></table> </div> <div id="comment_83596" class="cm"> </div> <div id="post_rate_div_83596"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83596"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83596&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83596&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_83596').innerHTML ? $('review_support_83596').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_83596"></span></a> <a class="replysubtract" 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</td> <td class="plc"> </td> </tr> </table> </div><div class="postaaa posta4" id="post_83597" ><table id="pid83597" class="plhin" summary="pid83597" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar83597" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xw1" style="color: #FFCC00">clearwaterqq</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo83597" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83597_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xi2" style="color: #FFCC00">clearwaterqq</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=1453&do=profile" target="_blank" class="xi2">5533</a></dd> </dl><div class="imicn"> <a 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href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83597" id="postnum83597" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>17</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83597" src="static/image/common/ico_lz.png" /> 楼主<span class="pipe">|</span> <em id="authorposton83597">发表于 2004-2-27 09:02:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=1453" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83597"> [这个贴子最后由clearwaterqq在 2004/02/27 01:10am 第 1 次编辑]<br /> <br /> MTF,<br /> one-pannel system<br /> <br /> 另，<br /> 怎么看一个lens系统是属于field lens系统？</td></tr></table> </div> <div id="comment_83597" class="cm"> </div> <div id="post_rate_div_83597"></div> 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id="authorposton83598">发表于 2004-3-1 18:54:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=6958" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83598"> telecentric system，fiels lens 我想跟离没有直接关系，<br /> 主要跟照明系统设计有关。如采用TIR架构，telecentric system会比较适合。<br /> 如不是TIR那一般就以field lens做主要架构。<br /> 至于，这两种架构都有人做离轴设计，只是看要离的程度要多少。<br /> 而offset stop我想会在照明端能配合，应该OK吧。<br /> Field lens我记得好象是将LENS很靠近image端的样子，我不是很记得。<br /> 在设计上要连同照明端一起设计，会复杂很多，目前没有实际设计过，所以没办法提供太多建议。<br /> </td></tr></table> </div> <div id="comment_83598" class="cm"> </div> <div id="post_rate_div_83598"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83598"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> 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</div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83599"> <div class="quote"><blockquote><strong>下面引用由<u>clearwaterqq</u>在 <i>2004/02/27 01:02am</i> 发表的内容：</strong><br /> 用这个做projection lens如何？<br /> F/2 FOV=38deg</blockquote></div>看起来还不错，不过肉厚可能会不够。<br /> MTF一般看到40lp/mm在0.6以上就够了，多了没有实质上的意义。<br /> 色差，TV-distortion可能要注意一下。<br /> <font color="#00008B">文字</font></td></tr></table> </div> <div id="comment_83599" class="cm"> </div> <div id="post_rate_div_83599"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83599"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83599&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" 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href="http://club.oecr.com/home.php?mod=magic&mid=namepost&idtype=pid&id=83599:10060" id="a_namepost_83599" onclick="showWindow(this.id, this.href)"><img src="static/image/magic/namepost.small.gif" />显身卡</a><li> </ul> <script type="text/javascript" reload="1">checkmgcmn('post_83599')</script> </div> </div> </td> </tr> <tr class="ad"> <td class="pls"> </td> <td class="plc"> </td> </tr> </table> </div><div class="postaaa posta7" id="post_83600" ><table id="pid83600" class="plhin" summary="pid83600" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar83600" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-6958.html" target="_blank" class="xw1" style="color: #FF00CC">seanhwong</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo83600" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83600_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-6958.html" target="_blank" class="xi2" style="color: #FF00CC">seanhwong</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=6958&do=profile" target="_blank" class="xi2">4035</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=6958&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=seanhwong" id="a_showip_li_83600" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=seanhwong" id="a_repent_83600" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-6958.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=6958&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83600" id="postnum83600" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>20</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83600" src="static/image/common/online_member.gif" /> <em id="authorposton83600">发表于 2004-3-1 19:03:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=6958" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83600"> 忘了说一点，这个应该不是DLP or LCOS的镜头吧。<br /> 照明端可能不好配合。<br /> </td></tr></table> </div> <div id="comment_83600" class="cm"> </div> <div id="post_rate_div_83600"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83600"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83600&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83600&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_83600').innerHTML ? $('review_support_83600').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_83600"></span></a> <a class="replysubtract" href="forum.php?mod=misc&action=postreview&do=against&tid=10060&pid=83600&hash=7db56aaf" 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id="post_83601" ><table id="pid83601" class="plhin" summary="pid83601" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar83601" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xw1" style="color: #FFCC00">clearwaterqq</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo83601" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83601_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xi2" style="color: #FFCC00">clearwaterqq</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=1453&do=profile" target="_blank" class="xi2">5533</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=1453&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=clearwaterqq" id="a_showip_li_83601" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=clearwaterqq" id="a_repent_83601" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-1453.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=1453&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83601" id="postnum83601" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>21</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83601" src="static/image/common/ico_lz.png" /> 楼主<span class="pipe">|</span> <em id="authorposton83601">发表于 2004-3-12 19:05:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=1453" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83601"> “照明端可能不好配合。”<br /> 可不可以详细解释一下呀！多谢。</td></tr></table> </div> <div id="comment_83601" class="cm"> </div> <div id="post_rate_div_83601"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83601"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83601&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83601&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_83601').innerHTML ? $('review_support_83601').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_83601"></span></a> <a class="replysubtract" href="forum.php?mod=misc&action=postreview&do=against&tid=10060&pid=83601&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_against_83601').innerHTML ? $('review_against_83601').innerHTML : 0) + ' 人 反对'">反对 <span id="review_against_83601"></span></a> </em> <p> <a href="javascript:;" id="mgc_post_83601" onmouseover="showMenu(this.id)" class="showmenu">使用道具</a> <a href="javascript:;" onclick="showWindow('miscreport83601', 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id="userinfo83602" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83602_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-6958.html" target="_blank" class="xi2" style="color: #FF00CC">seanhwong</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=6958&do=profile" target="_blank" class="xi2">4035</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=6958&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=seanhwong" id="a_showip_li_83602" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=seanhwong" id="a_repent_83602" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-6958.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=6958&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83602" id="postnum83602" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>22</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83602" src="static/image/common/online_member.gif" /> <em id="authorposton83602">发表于 2004-3-15 01:44:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=6958" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83602"> 非远心镜头 照明的exit pupil 和镜头的 entrance pupil相对于panel要对称<br /> 所以设计上要一起设计 整体系统会复杂很多 <br /> 优化时要同时考虑两边 <br /> 而非远心系统 在ＴＩＲ架构下是有问题<br /> 照明光边缘光线会被砍掉<br /> 用filed lens 又有一片是照明和投影共享<br /> 优化时要一起考量<br /> </td></tr></table> </div> <div id="comment_83602" class="cm"> </div> <div id="post_rate_div_83602"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83602"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83602&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83602&hash=7db56aaf" onclick="showWindow('login', this.href)" 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src="static/image/magic/namepost.small.gif" />显身卡</a><li> </ul> <script type="text/javascript" reload="1">checkmgcmn('post_83602')</script> </div> </div> </td> </tr> <tr class="ad"> <td class="pls"> </td> <td class="plc"> </td> </tr> </table> </div><div class="postaaa posta10" id="post_83603" ><table id="pid83603" class="plhin" summary="pid83603" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar83603" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xw1" style="color: #FFCC00">clearwaterqq</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo83603" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83603_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-1453.html" target="_blank" class="xi2" style="color: #FFCC00">clearwaterqq</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=1453&do=profile" target="_blank" class="xi2">5533</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=1453&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> <a href="http://club.oecr.com/home.php?mod=magic&mid=showip&idtype=user&id=clearwaterqq" id="a_showip_li_83603" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/showip.small.gif" alt="" /> IP卡</a> <a href="http://club.oecr.com/home.php?mod=magic&mid=checkonline&idtype=user&id=clearwaterqq" id="a_repent_83603" class="xi2" onclick="showWindow(this.id, this.href)"><img src="static//image/magic/checkonline.small.gif" alt="" /> 狗仔卡</a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> <div class="avatar"><a href="http://club.oecr.com/space-uid-1453.html" class="avtm" target="_blank"><img src="http://www.oecr.com/uc_server/avatar.php?uid=1453&size=middle" /></a></div> </div> </div> </td> <td class="plc"> <div class="pi"> <strong> <a href="http://bbs.oecr.com/forum.php?mod=redirect&goto=findpost&ptid=10060&pid=83603" id="postnum83603" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>23</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83603" src="static/image/common/ico_lz.png" /> 楼主<span class="pipe">|</span> <em id="authorposton83603">发表于 2004-3-15 19:43:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=1453" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83603"> To: seanhwong<br /> <br /> 我还是没找到用field lens作架构的projection lens。<br /> 看过一些资料，projection lens一般采用telecentric,petzval,double gauss等；<br /> field lens 一般用在relay system，eyepiece上。<br /> 可不可以提供相关的资料呀？<br /> 谢了先。 </td></tr></table> </div> <div id="comment_83603" class="cm"> </div> <div id="post_rate_div_83603"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83603"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=3&tid=10060&repquote=83603&extra=page%3D1&page=2" onclick="showWindow('reply', this.href)">回复</a> <a class="replyadd" href="forum.php?mod=misc&action=postreview&do=support&tid=10060&pid=83603&hash=7db56aaf" onclick="showWindow('login', this.href)" onmouseover="this.title = ($('review_support_83603').innerHTML ? $('review_support_83603').innerHTML : 0) + ' 人 支持'">支持 <span id="review_support_83603"></span></a> <a class="replysubtract" 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</td> <td class="plc"> </td> </tr> </table> </div><div class="postaaa posta11" id="post_83605" ><table id="pid83605" class="plhin" summary="pid83605" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar83605" class="pls favatar"> <div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-3795.html" target="_blank" class="xw1" style="color: #003366">jessia</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo83605" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo83605_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-3795.html" target="_blank" class="xi2" style="color: #003366">jessia</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=3795&do=profile" target="_blank" class="xi2">211</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=3795&do=profile" 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onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>24</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon83605" src="static/image/common/online_member.gif" /> <em id="authorposton83605">发表于 2004-3-17 18:51:00</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=10060&page=2&authorid=3795" rel="nofollow">只看该作者</a> </div> </div> </div><div class="pct"><div class="pcb"> <h2>求教：projection lens 设计问题</h2> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_83605"> 远心光路是一项重要的参数，要求出射光束主光线与光轴的夹角小于一定的角度，要求主光线与DMD芯片垂直,以保证能量全部被利用。</td></tr></table> </div> <div id="comment_83605" class="cm"> </div> <div id="post_rate_div_83605"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition83605"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> 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