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    [讨论]公差分析结果的疑问 [复制链接]

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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 ){{]3r  
    OBmmOswg~  
    $P%b?Y/  
    WscNjWQ^TD  
    然后添加了默认公差分析，基本没变 9-?[%8  
    ZAcW@xfb  
    :raYt5n1,y  
    Qh. : N  
    然后运行分析的结果如下： ZSg["`  
    N=P+b%%:Z  
    Analysis of Tolerances C~aNOe WR  
    |LNAd:0  
    File : E:\光学设计资料\zemax练习\f500.ZMX /SDDCZ`;|c  
    Title: ^l"  
    Date : TUE JUN 21 2011 Q:~>$5Em5  
    %.*?i9}  
    Units are Millimeters. 6S2v3  
    All changes are computed using linear differences. F)g.xQ  
    89{@2TXR  
    Paraxial Focus compensation only. 6~j.S "  
    K1K3s< y+  
    WARNING: Solves should be removed prior to tolerancing. w %sHA  
    3d|n\!1r  
    Mnemonics: zS##YR  
    TFRN: Tolerance on curvature in fringes. OAiip,  
    TTHI: Tolerance on thickness. =8F]cW'1`  
    TSDX: Tolerance on surface decentering in x. K6Gri>Um  
    TSDY: Tolerance on surface decentering in y. _U`_;=(  
    TSTX: Tolerance on surface tilt in x (degrees). oAgO 3x   
    TSTY: Tolerance on surface tilt in y (degrees). M4:}`p=  
    TIRR: Tolerance on irregularity (fringes). * -Kf  
    TIND: Tolerance on Nd index of refraction. Kqt,sJ  
    TEDX: Tolerance on element decentering in x. ^"!j m  
    TEDY: Tolerance on element decentering in y. a:(.{z?nM  
    TETX: Tolerance on element tilt in x (degrees). !@x'?+   
    TETY: Tolerance on element tilt in y (degrees). ]7`)|PJ  
    K8UgP?c;0  
    WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. C r~!N|(  
    ,mE*k79L6  
    WARNING: Boundary constraints on compensators will be ignored. . !|3a  
    `/mcjKQ&9y  
    Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm D<2|&xaR  
    Mode                : Sensitivities StP7t  
    Sampling            : 2 _bO4s#yI  
    Nominal Criterion   : 0.54403234 dm&vLQVS  
    Test Wavelength     : 0.6328 p/a)vN+*x'  
    2vit{  
    k2xOu9ncEj  
    Fields: XY Symmetric Angle in degrees j<LDJi>O  
    #      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY t(|\3$z  
    1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 >e7w!v]  
    m};Qng]  
    Sensitivity Analysis: CR-6}T   
    #*[G,s#t^  
                     |----------------- Minimum ----------------| |----------------- Maximum ----------------| :{d?B$  
    Type                      Value      Criterion        Change          Value      Criterion        Change od7 [h5r  
    Fringe tolerance on surface 1 E r6'Ig|U  
    TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1{sfDw[s  
    Change in Focus                :      -0.000000                            0.000000 s4RqMO5eI  
    Fringe tolerance on surface 2 S;vE %  
    TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 P-?ya!@"  
    Change in Focus                :       0.000000                            0.000000 52$7vYMto  
    Fringe tolerance on surface 3 +a%Vp!y  
    TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 qd9CKd  
    Change in Focus                :      -0.000000                            0.000000  0~{&  
    Thickness tolerance on surface 1 HY,+;tf2r  
    TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 :h>d'+\  
    Change in Focus                :       0.000000                            0.000000 .CClc(bO_/  
    Thickness tolerance on surface 2 ]Hp o[IF  
    TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Khbkv  
    Change in Focus                :       0.000000                           -0.000000 wsyG~^>  
    Decenter X tolerance on surfaces 1 through 3 f*VBSg[`  
    TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 d85\GEF9i  
    Change in Focus                :       0.000000                            0.000000 TS9=A1J#  
    Decenter Y tolerance on surfaces 1 through 3 A d0dg2Gw  
    TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,1"w2,=  
    Change in Focus                :       0.000000                            0.000000 &J)q_Z8  
    Tilt X tolerance on surfaces 1 through 3 (degrees) idLysxN  
    TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F j_r n  
    Change in Focus                :       0.000000                            0.000000 \(PC#H%  
    Tilt Y tolerance on surfaces 1 through 3 (degrees) 'Jb6CR n  
    TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 S+Aq0B<  
    Change in Focus                :       0.000000                            0.000000 f&w8o5=|I  
    Decenter X tolerance on surface 1 (Yzy;"iAu  
    TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Y~qv 0O6K  
    Change in Focus                :       0.000000                            0.000000 zW`$T 88~  
    Decenter Y tolerance on surface 1 Hz}6XS@  
    TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 k\T,CZ<  
    Change in Focus                :       0.000000                            0.000000 P< +5So0  
    Tilt X tolerance on surface (degrees) 1 *^XfEO  
    TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 8#OcrJzC  
    Change in Focus                :       0.000000                            0.000000 0W|}5(C  
    Tilt Y tolerance on surface (degrees) 1 6B)3SC  
    TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 cSYW)c|t  
    Change in Focus                :       0.000000                            0.000000 ,"PKGd]^  
    Decenter X tolerance on surface 2 (~~*PT-  
    TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 =_%i5]89P  
    Change in Focus                :       0.000000                            0.000000 oaI|A^v  
    Decenter Y tolerance on surface 2 mJ=3faM  
    TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bwjjwu&  
    Change in Focus                :       0.000000                            0.000000 78v4c Q Y  
    Tilt X tolerance on surface (degrees) 2 PQ`p:=~>:i  
    TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6~KtT{MYQ  
    Change in Focus                :       0.000000                            0.000000 B/S~Jn  
    Tilt Y tolerance on surface (degrees) 2 N;XaK+_2F  
    TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 FhZ^/= As  
    Change in Focus                :       0.000000                            0.000000 ,?"cKdiZ  
    Decenter X tolerance on surface 3 ~+1t3M e  
    TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *xEcX6ZHX  
    Change in Focus                :       0.000000                            0.000000 &UhI1mi]h  
    Decenter Y tolerance on surface 3 pA(B~9WQ  
    TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  D(}w$hi8  
    Change in Focus                :       0.000000                            0.000000 ?)$+W+vK  
    Tilt X tolerance on surface (degrees) 3 @add'>)  
    TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #rL%K3'  
    Change in Focus                :       0.000000                            0.000000 )J?Nfi%  
    Tilt Y tolerance on surface (degrees) 3 V[<]BOM\v  
    TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 2%YtMkC5  
    Change in Focus                :       0.000000                            0.000000 ;b=3iT-2"  
    Irregularity of surface 1 in fringes `T H0*:aI  
    TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 nezdk=8J/  
    Change in Focus                :       0.000000                            0.000000 G.2ij%Zz  
    Irregularity of surface 2 in fringes mX78Av.z!  
    TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 9Foo8e  
    Change in Focus                :       0.000000                            0.000000 G3{t{XkV  
    Irregularity of surface 3 in fringes SST1vzm!  
    TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 @1#QbNp#  
    Change in Focus                :       0.000000                            0.000000 .\kcWeC\  
    Index tolerance on surface 1 FNpMu3Q  
    TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 B3V:?#  
    Change in Focus                :       0.000000                            0.000000 c+l1#[Dnc  
    Index tolerance on surface 2 #hEN4c[Ex  
    TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 o9dqHm  
    Change in Focus                :       0.000000                           -0.000000 hLyD#XCFA  
    +8e~jf3E1  
    Worst offenders: o9)pOwk7;  
    Type                      Value      Criterion        Change 8*rd`k1 |g  
    TSTY   2            -0.20000000     0.35349910    -0.19053324 3,~M`~B  
    TSTY   2             0.20000000     0.35349910    -0.19053324 P+iZ5S\kL=  
    TSTX   2            -0.20000000     0.35349910    -0.19053324 6"^Yn.  
    TSTX   2             0.20000000     0.35349910    -0.19053324 S Rs~p  
    TSTY   1            -0.20000000     0.42678383    -0.11724851 N&`VMEB)k  
    TSTY   1             0.20000000     0.42678383    -0.11724851 ,3_;JT"5  
    TSTX   1            -0.20000000     0.42678383    -0.11724851 Kq}/`P  
    TSTX   1             0.20000000     0.42678383    -0.11724851 F|K=].  
    TSTY   3            -0.20000000     0.42861670    -0.11541563 Z:3N*YkL  
    TSTY   3             0.20000000     0.42861670    -0.11541563 *I;,|Jjk  
    a []Iz8*6e  
    Estimated Performance Changes based upon Root-Sum-Square method: cE}R7,y  
    Nominal MTF                 :     0.54403234 2@``=0z  
    Estimated change            :    -0.36299231 YfBb=rN2s  
    Estimated MTF               :     0.18104003 (Dr g  
    ]>R|4K_  
    Compensator Statistics: V[-4cu,Ph^  
    Change in back focus: JcsJfTI  
    Minimum            :        -0.000000 Qq;` 9-&j  
    Maximum            :         0.000000 %{\|/#>:  
    Mean               :        -0.000000 0HUSN_3F  
    Standard Deviation :         0.000000 aC0[OmbG  
    ;D^%)v /i  
    Monte Carlo Analysis: VeO$n*O  
    Number of trials: 20 ]M AB  
    _@CY_`a  
    Initial Statistics: Normal Distribution %u\Oj \8U  
    70,V>=aJ  
      Trial       Criterion        Change wD|,G!8E2  
          1     0.42804416    -0.11598818 y9d[-j ;w  
    Change in Focus                :      -0.400171 6AeX$>k+  
          2     0.54384387    -0.00018847 k CkSu-  
    Change in Focus                :       1.018470 5urM,1SQ@  
          3     0.44510003    -0.09893230 +]|aACt]  
    Change in Focus                :      -0.601922 cjzhuH/y  
          4     0.18154684    -0.36248550 EL!V\J`S_  
    Change in Focus                :       0.920681 &jCT-dj  
          5     0.28665820    -0.25737414 }} cz95  
    Change in Focus                :       1.253875 o -tc}Aa  
          6     0.21263372    -0.33139862 \\F^uM7,  
    Change in Focus                :      -0.903878 s BP.P7u  
          7     0.40051424    -0.14351809 12 HBq8o  
    Change in Focus                :      -1.354815 pEk^;  
          8     0.48754161    -0.05649072 NpV# zzE  
    Change in Focus                :       0.215922 85; BS'  
          9     0.40357468    -0.14045766 3-cCdn  
    Change in Focus                :       0.281783 7Q,9j.  
         10     0.26315315    -0.28087919 ~=hM y`Ml  
    Change in Focus                :      -1.048393 USz |Rh  
         11     0.26120585    -0.28282649 VU+`yQp  
    Change in Focus                :       1.017611 K#bdb  
         12     0.24033815    -0.30369419 )%rGD =2~  
    Change in Focus                :      -0.109292 XMb]&VvH  
         13     0.37164046    -0.17239188 xU$A/!oK  
    Change in Focus                :      -0.692430 N6wea]  
         14     0.48597489    -0.05805744 6^U8Utx  
    Change in Focus                :      -0.662040 L[\m{gN  
         15     0.21462327    -0.32940907 ?sQOz[ig;  
    Change in Focus                :       1.611296 Y<('G5A  
         16     0.43378226    -0.11025008 3nb&Z_/e  
    Change in Focus                :      -0.640081 n_;qB7,,  
         17     0.39321881    -0.15081353 f%n],tE6  
    Change in Focus                :       0.914906 ]v=*WK  
         18     0.20692530    -0.33710703 qzk/P1{-  
    Change in Focus                :       0.801607 Q 6djfEN>  
         19     0.51374068    -0.03029165 WP)r5;Hv`  
    Change in Focus                :       0.947293 5W/!o&x~7  
         20     0.38013374    -0.16389860 noY~fq/U  
    Change in Focus                :       0.667010 Pw`26mB   
    y]|Hrx  
    Number of traceable Monte Carlo files generated: 20 e~tgd8a2a  
    -dXlGOD+C  
    Nominal     0.54403234 OO?d[7Wt0  
    Best        0.54384387    Trial     2 #clOpyT*  
    Worst       0.18154684    Trial     4 ACQc 0:q  
    Mean        0.35770970 \lj.vzD-A  
    Std Dev     0.11156454 DG& ({vy  
    X0<qG  
    S~BBBD  
    Compensator Statistics: v~|~&Dwq  
    Change in back focus: 2xBIfmR^y  
    Minimum            :        -1.354815 nY(>|!  
    Maximum            :         1.611296 N{L'Q0!  
    Mean               :         0.161872 %LBa;M  
    Standard Deviation :         0.869664 hV5Aw;7C  
    r{y&}gA  
    90% >       0.20977951               N$1ZA)M  
    80% >       0.22748071               V +#Sb  
    50% >       0.38667627               r!H'8O!  
    20% >       0.46553746               (S1c6~  
    10% >       0.50064115                y/}[S@4uB  
    (Fc\*Vn  
    End of Run. RbPD3& .  
    <a9<rF =r  
    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 B|%(0j8  
    }j=UO*|  
    12 y=Eh  
    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 ${(v Er#}k  
    #-76E  
    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                 @#HB6B  
    80% >       0.22748071                 uD'yzR!]+  
    50% >       0.38667627                 }sy^ed  
    20% >       0.46553746                 \"]KF8c^_  
    10% >       0.50064115 ;v#BguM  
    Y.}"<{RQ  
    最后这个数值是MTF值呢，还是MTF的公差？ UCu0Xqf  
    ++9?LH4S4  
    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？？？   W=E+/ZvPt  
    Q#kSp8  
    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  : oSf6J:?*e  
    90% >       0.20977951                 5gq  
    80% >       0.22748071                 a1>Tz  
    50% >       0.38667627                 8aqH;|fG}  
    20% >       0.46553746                 I!?)}d  
    10% >       0.50064115 n #l~B@  
    ....... `@<~VWe5  
    \N%L-%^  
    s/l>P~3=  
    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   +h)1NX;o1  
    Mode                : Sensitivities \>\_OfY1W  
    Sampling            : 2 X:/7#fcG8  
    Nominal Criterion   : 0.54403234 o?g9Grk  
    Test Wavelength     : 0.6328 aKFY&zN?  
    tZ.hSDH  
    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？ KTE X]  
    =`k', V_  
    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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