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class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_372296"> 1.一个反摄远型<a href="http://display.oecr.com" target="_blank" class="relatedlink">照相</a>物镜由一个焦距ｆ1’=-10毫米和焦距ｆ2’=8毫米的两个薄透镜组成，对无限远物体成像，，两透镜之间的间隔为10毫米，接收器为1/4英寸的ＣＣＤ靶面，（一英寸等于25.4毫米，探测器靶面长与宽之比为4：3）物体所成像在探测器靶面上为内接圆，<br /> 求系统的焦距和像距？物方视场角为多少？假设孔径光阑直径为2 毫米，物体的光亮度Ｌ=1000ｃｄ／ｍ２，整个系统透过率=0.8，求ＣＣＤ靶面上的光照度。<br /> <br /> 2.一个开普勒望远系统由一个物镜，一个分划板和一个目镜组成，孔径光阑与物镜重合，物镜的直径为40毫米，分划板直径为30毫米，目镜焦距为25毫米，出瞳直径为4 毫米。求物方和像方视场角为多少？出瞳距离为多少？假设系统没有渐晕，综合考虑轴上和轴外光束，目镜的直径为多少？如果要求目镜的直径降为30 毫米，采用加场镜的办法，问场镜的焦距为多少？如果希望出瞳距离在现有的基础上增加5毫米，采用加场镜的办法，问场镜的焦距为多少？（所有透镜都看作为薄透镜）<br /> <br /> 3.一个对无限远物体成像的系统 由两个焦距为200毫米的薄透镜组成，两薄透镜之间的距离为50毫米，如果在第二个薄透镜的后面10毫米处加上一个口径为30毫米的直角分光棱镜（玻璃<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>=1.5163，棱镜展开长度），问此时的像距（棱镜第二表面和像平面的距离）为多少？如果希望此时像平面还保持在没有加棱之前的位置，采用只调节第二个薄透镜焦距的方法，问此时第二透镜焦距应调整为多少？此时的新像距为多少？<br /> <br /> 4.一个<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a><a href="http://optics.oecr.com" target="_blank" class="relatedlink">加工</a>系统由一个负透镜和一个正透镜组成的倒置伽利略扩束望远镜以及后面的一个成像透镜组成，负透镜焦距为-20毫米，成像透镜焦距为50毫米，从激光器出射的激光光束直径为2毫米，波长为0.0006328毫米 ，要求激光经过扩束望远系统和后面的成像透镜后，在像平面上的理想衍射艾丽斑的直径小于等于0.005 毫米。求扩束望远系统中正透镜的焦距为多少？ 从扩束望远系统出射的光束直径为多少？<br /> <br /> 5.一个空间成像光学系统由一个凹的主镜反射镜和一个凸的次镜反射镜组成，对无限远物体成像，半视场角为1度，主镜的半径为-300毫米，次镜的半径为-120毫米，两镜间距为110 毫米，求此组合系统的焦距，像高，像距为多少？现主镜加工完后，实际测半径为-303毫米，为保持原有相距不变，采用调节主镜和次镜之间的间隔，应调整为多少？（此系统主镜焦距为正，次镜的焦距为负）。<br /> <br /> 6.证明：有一个用于红外系统的球形浸没透镜，物空间为空气，折射率为1.5,它将物体成像在后表面与球心的1/2处，证明此时的垂轴放大率为1/2。<br /> <br /> <br /> <font size="4">非常感谢谢谢！</font></td></tr></table> </div> <div id="comment_372296" class="cm"> </div> <div id="post_rate_div_372296"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=59536&formhash=e8561f5c" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = 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