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    [讨论]公差分析结果的疑问 [复制链接]

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    离线sansummer
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    只看楼主 倒序阅读 楼主  发表于: 2011-06-21
    我现在在初学zemax的公差分析，找了一个双胶合透镜 dY!u)M;~~  
    qM",( Bh  
    X`:'i?(yj  
    G>w+#{(  
    然后添加了默认公差分析，基本没变 T_LLJ}6M  
    + BL{@,zr  
    eh(<m8I  
    dz-y}J11  
    然后运行分析的结果如下： | kXm}K  
    )&,{?$.  
    Analysis of Tolerances _Zc4=c,K  
    6ZOy&fd,Ty  
    File : E:\光学设计资料\zemax练习\f500.ZMX xq[Yg15d%  
    Title: D."=k{r.  
    Date : TUE JUN 21 2011 ~Y7dH Dn  
    })Yv9],6  
    Units are Millimeters. rjk( X|R*  
    All changes are computed using linear differences. [=uIb._Wv  
    *jITOR!uF`  
    Paraxial Focus compensation only. I4t*?  
    =-#G8L%Q  
    WARNING: Solves should be removed prior to tolerancing. z-r2!^q27  
    </[: 9Cl  
    Mnemonics: _mJG5(|  
    TFRN: Tolerance on curvature in fringes. D-&a n@  
    TTHI: Tolerance on thickness. 94/BG0  
    TSDX: Tolerance on surface decentering in x. taWqSq!  
    TSDY: Tolerance on surface decentering in y. gb" 4B%Hm  
    TSTX: Tolerance on surface tilt in x (degrees). 4w93}t.z  
    TSTY: Tolerance on surface tilt in y (degrees). 28I^$> [  
    TIRR: Tolerance on irregularity (fringes). Z>P*@S,6G  
    TIND: Tolerance on Nd index of refraction. 7TX2&kMoc  
    TEDX: Tolerance on element decentering in x. fjG&`m#"  
    TEDY: Tolerance on element decentering in y. pQa:pX  
    TETX: Tolerance on element tilt in x (degrees). w7TJv4_  
    TETY: Tolerance on element tilt in y (degrees). rD &D)w  
    ezm&]F`  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 7DD&~ZcD  
    f&KdlpxKv  
    WARNING: Boundary constraints on compensators will be ignored. = QO g 6  
    )[Z!*am  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm p3(2?UO!  
    Mode                : Sensitivities kmPYx)o  
    Sampling            : 2 pUYM}&dX  
    Nominal Criterion   : 0.54403234 eiVC"0-c}  
    Test Wavelength     : 0.6328 pG3k   
    ?C-Towo=i  
    vB\]u.  
    Fields: XY Symmetric Angle in degrees ]?+{aS-]?k  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 3gEMRy*+  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 nz]&a1"&  
    M@et6aud;K  
    Sensitivity Analysis: =qy@Wvj$  
    2JGL;U$  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| 0RFRbi@n(  
    Type                      Value      Criterion        Change          Value      Criterion        Change soRv1)el  
    Fringe tolerance on surface 1 88s/Q0l  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 49H+(*@v@  
    Change in Focus                :      -0.000000                            0.000000 80OtO#1y  
    Fringe tolerance on surface 2 ^h' Sla  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 qet>1<  
    Change in Focus                :       0.000000                            0.000000 V!_71x\-Q  
    Fringe tolerance on surface 3 +0Q,vK#j^  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 .B2]xfo"`  
    Change in Focus                :      -0.000000                            0.000000 NPa\Cg[  
    Thickness tolerance on surface 1 FS6`6M.K  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 2Os1C}m  
    Change in Focus                :       0.000000                            0.000000 *cuuzi&  
    Thickness tolerance on surface 2 (V`Md\NL`  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 w8S!%abl1  
    Change in Focus                :       0.000000                           -0.000000 kRCQv-*  
    Decenter X tolerance on surfaces 1 through 3 XRx+Dddt;  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fxaJZz$o  
    Change in Focus                :       0.000000                            0.000000 "TyJP[/  
    Decenter Y tolerance on surfaces 1 through 3 +ZMls [  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 G 2bDf-1ew  
    Change in Focus                :       0.000000                            0.000000 *iBTI+"]  
    Tilt X tolerance on surfaces 1 through 3 (degrees) Hmt^h(*/2  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 nn/?fIZN4  
    Change in Focus                :       0.000000                            0.000000 {%lXYMyu  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) P262Q&.}d  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 i 9<pqQ  
    Change in Focus                :       0.000000                            0.000000 -VxTx^)>  
    Decenter X tolerance on surface 1 #'D" 'B  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ajR%c2G;  
    Change in Focus                :       0.000000                            0.000000 !* Ti}oIo&  
    Decenter Y tolerance on surface 1 zi R5:d3   
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 wI]"U2L5  
    Change in Focus                :       0.000000                            0.000000 o1W:ox?kO  
    Tilt X tolerance on surface (degrees) 1 R'EUV0KX>Y  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %,Sf1fUJ  
    Change in Focus                :       0.000000                            0.000000 c0B|F  
    Tilt Y tolerance on surface (degrees) 1 voP7"Dl[  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ('wY9kvL&  
    Change in Focus                :       0.000000                            0.000000 <h%O?mkC  
    Decenter X tolerance on surface 2 poGc a1  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Nkxm m/Z  
    Change in Focus                :       0.000000                            0.000000 ::Ke ^dp  
    Decenter Y tolerance on surface 2 @k[R/,#'[t  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 z%MW!x  
    Change in Focus                :       0.000000                            0.000000 Q_* "SRz  
    Tilt X tolerance on surface (degrees) 2 ) [0T16  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 t@u7RL*n:<  
    Change in Focus                :       0.000000                            0.000000 A+6 n#  
    Tilt Y tolerance on surface (degrees) 2 + a- 6Q ~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 'WaPrCw@Mf  
    Change in Focus                :       0.000000                            0.000000 +fvaUV_-  
    Decenter X tolerance on surface 3 l^ZI* z7N  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 |f~@8|MQP+  
    Change in Focus                :       0.000000                            0.000000 bM8If"  
    Decenter Y tolerance on surface 3 2gO2jJlv  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _ZY)M  
    Change in Focus                :       0.000000                            0.000000 3"o"fl  
    Tilt X tolerance on surface (degrees) 3 6qcO?U  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 % K(<$!  
    Change in Focus                :       0.000000                            0.000000 nKW*Y}VO  
    Tilt Y tolerance on surface (degrees) 3 H*#s }9=kZ  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 zSo)k~&[3  
    Change in Focus                :       0.000000                            0.000000 ^Ge+~o?x  
    Irregularity of surface 1 in fringes Q+g!V5'  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634  r.4LU  
    Change in Focus                :       0.000000                            0.000000 XsnF~)YW  
    Irregularity of surface 2 in fringes ,%\o4Rc'o  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Neg,qOt  
    Change in Focus                :       0.000000                            0.000000 x|yEt O&  
    Irregularity of surface 3 in fringes FQ g~l4WX  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 8_T6_jL<  
    Change in Focus                :       0.000000                            0.000000 v) vkn/:  
    Index tolerance on surface 1 yAoe51h?  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 A&nU]R8S  
    Change in Focus                :       0.000000                            0.000000 zZVfj:i8  
    Index tolerance on surface 2 PRz/inru-  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 . 'Y]R3\M+  
    Change in Focus                :       0.000000                           -0.000000 G:zua`u[  
    v4C{<8:X  
    Worst offenders: JV;OGh>  
    Type                      Value      Criterion        Change um9_ru~  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 FQ=@mjh  
    TSTY   2             0.20000000     0.35349910    -0.19053324 ]Dw]p! @  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 rETRTp0HT  
    TSTX   2             0.20000000     0.35349910    -0.19053324 Iu$K i  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 zbq@pj)Qu  
    TSTY   1             0.20000000     0.42678383    -0.11724851 Mn)@{^  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 ~%YBI9$+  
    TSTX   1             0.20000000     0.42678383    -0.11724851 OE}*2P/M>  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 I1PuHf Qs  
    TSTY   3             0.20000000     0.42861670    -0.11541563  cReB~wk  
    CiB%B`,N  
    Estimated Performance Changes based upon Root-Sum-Square method: HuOIFv  
    Nominal MTF                 :     0.54403234 8MSC.0   
    Estimated change            :    -0.36299231 8']9$#  
    Estimated MTF               :     0.18104003 D9z|VIw8  
    H,b5C_D29  
    Compensator Statistics: hZ.Z3`v70  
    Change in back focus: {)-aSywe  
    Minimum            :        -0.000000 O} f80K  
    Maximum            :         0.000000 T<XA8h*  
    Mean               :        -0.000000 >%wLAS",w  
    Standard Deviation :         0.000000 {?yr'*  
    mvq&Pj 1}L  
    Monte Carlo Analysis: D:erBMKv,  
    Number of trials: 20 gvL f|+m  
    7D<#(CE{  
    Initial Statistics: Normal Distribution b[`Yi1^]%g  
    92EWIHEWZ  
      Trial       Criterion        Change Y'ow  
          1     0.42804416    -0.11598818 ;UxP Kpl  
    Change in Focus                :      -0.400171 utIX  %0  
          2     0.54384387    -0.00018847 ;Rv!k&Df  
    Change in Focus                :       1.018470 |o\8  
          3     0.44510003    -0.09893230 ]w.;4`l*  
    Change in Focus                :      -0.601922 _'(,  
          4     0.18154684    -0.36248550 wu)w   
    Change in Focus                :       0.920681 ^/r7@:  
          5     0.28665820    -0.25737414 .FLy;_f+  
    Change in Focus                :       1.253875 sQ fFu  
          6     0.21263372    -0.33139862 ?Orxmxc 2  
    Change in Focus                :      -0.903878 OVV]x{  
          7     0.40051424    -0.14351809 0PWg;>^'  
    Change in Focus                :      -1.354815 U-|NY  
          8     0.48754161    -0.05649072 Z:*76PP,  
    Change in Focus                :       0.215922 R00eisd  
          9     0.40357468    -0.14045766 1&- </G#  
    Change in Focus                :       0.281783 /AW=5Ck-#  
         10     0.26315315    -0.28087919 9M:O0)s  
    Change in Focus                :      -1.048393 {HCz p,Y  
         11     0.26120585    -0.28282649 ;A*`e$  
    Change in Focus                :       1.017611 BG<qIQd  
         12     0.24033815    -0.30369419 $f zaPD4.  
    Change in Focus                :      -0.109292 @~%r5pz6  
         13     0.37164046    -0.17239188 + ~>Aj  
    Change in Focus                :      -0.692430 mVy|{Oh  
         14     0.48597489    -0.05805744 QDhOhGK  
    Change in Focus                :      -0.662040 #*KNPh  
         15     0.21462327    -0.32940907 s{$(*_  
    Change in Focus                :       1.611296 o}$ EG  
         16     0.43378226    -0.11025008 H XmS|PX  
    Change in Focus                :      -0.640081 6*3.SGUY  
         17     0.39321881    -0.15081353 bLwAXW2K+  
    Change in Focus                :       0.914906 }&[  
         18     0.20692530    -0.33710703 ;S>])5<  
    Change in Focus                :       0.801607 >Vwc3d  
         19     0.51374068    -0.03029165 jJ5W>Q1mK$  
    Change in Focus                :       0.947293 D/Mi^5H)  
         20     0.38013374    -0.16389860 lk( }-  
    Change in Focus                :       0.667010 zaK#Z?V}  
    aL&n[   
    Number of traceable Monte Carlo files generated: 20 1#ft#-g}  
    ^Gqt+K%  
    Nominal     0.54403234 v^1pN>#%g  
    Best        0.54384387    Trial     2 7BJzM lJ1Y  
    Worst       0.18154684    Trial     4 W#hj 1  
    Mean        0.35770970 4/wa+Y+=vt  
    Std Dev     0.11156454 W;,C_   
    wwyPl  
    J%,*is EL  
    Compensator Statistics: egq67S  
    Change in back focus: <kx&w(=  
    Minimum            :        -1.354815 sk=-M8;\  
    Maximum            :         1.611296 E<Q f!2s$  
    Mean               :         0.161872 o}* hY"&  
    Standard Deviation :         0.869664 (G[ *|6m  
    yc?a=6q'm  
    90% >       0.20977951               [m|YWT=  
    80% >       0.22748071               D"a~ #^  
    50% >       0.38667627               ZR(x%ews  
    20% >       0.46553746               E(Z8  
    10% >       0.50064115                'LE =6{#  
    `pGa~!vl  
    End of Run. /N&CaH\;^$  
    /\4'ddGU  
    这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 _Nqt21sL  
    ZOZ+Y\uU  
    D F*:_B )  
    是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 Bi @2  
    [O?z@)dx  
    不吝赐教
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    只看该作者 1楼 发表于: 2011-06-21
    我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？
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    只看该作者 2楼 发表于: 2011-06-22
    90% >       0.20977951                 2kIa*#VOJ  
    80% >       0.22748071                 k[:bQ)H  
    50% >       0.38667627                 6{^E{go  
    20% >       0.46553746                 fngOeLVG  
    10% >       0.50064115 WRrd'{sB  
    &8g?4v  
    最后这个数值是MTF值呢，还是MTF的公差？ &QGdLXOn  
    rjp-Fw~1w  
    也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   d;>#Sxf  
    `CgaS#  
    怎么没人啊，大家讨论讨论吗
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    只看该作者 3楼 发表于: 2011-06-23
    没有人啊？？？
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    只看该作者 4楼 发表于: 2011-06-23
    引用第2楼sansummer于2011-06-22 08:56发表的  : X  .5aMm  
    90% >       0.20977951                 w6W}"Uw  
    80% >       0.22748071                 .[JYj(p  
    50% >       0.38667627                 =yyp?WmC8  
    20% >       0.46553746                 N,;5{y1;J  
    10% >       0.50064115 #~l(]h@ )  
    ....... "huFA|`  
    >w^YO25q  
    yGPS`S  
    这些数值都是MTF值
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    只看该作者 5楼 发表于: 2011-06-23
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   V` 1/SQX  
    Mode                : Sensitivities 8_6Q~  
    Sampling            : 2 3 "Q=Vl"  
    Nominal Criterion   : 0.54403234 LM-J !44  
    Test Wavelength     : 0.6328 qQsku;C?i  
    6N;wqn  
    波长632.8nm 时 mtf 是 0.54403234  没达到0.6
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    只看该作者 6楼 发表于: 2011-06-24
    回 5楼(天地大同) 的帖子
    谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ eL\;Nf+Zp  
    '=G|Sq^aO  
    这个评价标准和我理想的设计结果的0.6有什么联系吗，另外这个 0.54403234  是这么来的？
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    只看该作者 7楼 发表于: 2011-06-24
    回 6楼(sansummer) 的帖子
    你试试把原来的系统波长改成632.8nm，看看Geometric MTF    30 per mm 的mtf值是不是0.54403234
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    只看该作者 8楼 发表于: 2011-06-24
    回 7楼(天地大同) 的帖子
    啊...这倒也是。换了波长的确可能有所变化。另外还有就是如果现在百分比太低，我是否应该考虑把最敏感的公差再紧一些，就会好了？
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    只看该作者 9楼 发表于: 2011-06-28
    回 8楼(sansummer) 的帖子
    恩，多多尝试
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