[讨论]公差分析结果的疑问 [复制链接]

我现在在初学zemax的公差分析，找了一个双胶合透镜 )yUSuK(Vu  
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图片:1.JPG

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然后添加了默认公差分析，基本没变 7{p6&xXx  
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图片:2.jpg

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然后运行分析的结果如下： O?0`QMY  
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Analysis of Tolerances R|[gEavFl  
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File : E:\光学设计资料\zemax练习\f500.ZMX Hb\['VhzM  
Title: :"gu=u!  
Date : TUE JUN 21 2011 %7 $X *  
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Units are Millimeters. \?vn0;R
4  
All changes are computed using linear differences. f@0Km^aUc  
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Paraxial Focus compensation only. XA\wZV |{  
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WARNING: Solves should be removed prior to tolerancing. C);I[H4Yfw  
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Mnemonics: 2E0oLl[  
TFRN: Tolerance on curvature in fringes. uOPLJ?%  
TTHI: Tolerance on thickness. uQg&]bSv  
TSDX: Tolerance on surface decentering in x. yT
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TSDY: Tolerance on surface decentering in y. IU\h,Ug  
TSTX: Tolerance on surface tilt in x (degrees). ~0rvrDDg  
TSTY: Tolerance on surface tilt in y (degrees). MH=Ld=i  
TIRR: Tolerance on irregularity (fringes). 9yp'-RKjw  
TIND: Tolerance on Nd index of refraction. JZ/T:Hsh4  
TEDX: Tolerance on element decentering in x. d(C5i8d  
TEDY: Tolerance on element decentering in y. '^(qlCI  
TETX: Tolerance on element tilt in x (degrees). hfpis==  
TETY: Tolerance on element tilt in y (degrees). W4=A.2[q  
@zT2!C?^L  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. >3&9Wbv>  
%IIo  
WARNING: Boundary constraints on compensators will be ignored. D&1(qi=x&  
;&XC*R+  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm w,LB  
Mode                : Sensitivities n$<n Yr`X  
Sampling            : 2 k0,]2R  
Nominal Criterion   : 0.54403234 ZUS06#t}  
Test Wavelength     : 0.6328 *9(E0"  
*mn"GK6  
Gm=e;X;r  
Fields: XY Symmetric Angle in degrees 8Fv4\dr  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY !UHX?<3r  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 tc{Qd&"(  
eg"A?S  
Sensitivity Analysis: sLf~o"yb  
fDAT#nlyp  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| X?Or.  
Type                      Value      Criterion        Change          Value      Criterion        Change ,,G'Zur7  
Fringe tolerance on surface 1 oo|Nu+  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 5:%`&B\  
Change in Focus                :      -0.000000                            0.000000 Px&)kEQ  
Fringe tolerance on surface 2 fzUG1|$e  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 fYlqaO4[  
Change in Focus                :       0.000000                            0.000000 b1yS1i D  
Fringe tolerance on surface 3 `E|>K\  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 k=9k4l  
Change in Focus                :      -0.000000                            0.000000 L$ZsNs+  
Thickness tolerance on surface 1 \zhCGDm1_  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 68~5Dx  
Change in Focus                :       0.000000                            0.000000 Pb<6-J

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Thickness tolerance on surface 2 e^UUR-K%
 
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 py6O\` \  
Change in Focus                :       0.000000                           -0.000000 5m\)82s  
Decenter X tolerance on surfaces 1 through 3 zpg5
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TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 M,we,!B0  
Change in Focus                :       0.000000                            0.000000 rVwW%&  
Decenter Y tolerance on surfaces 1 through 3 A@e!~  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 j|@8Vx
Z  
Change in Focus                :       0.000000                            0.000000 )lP(isFP  
Tilt X tolerance on surfaces 1 through 3 (degrees) NT{'BJ  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 g`4WisL1n  
Change in Focus                :       0.000000                            0.000000 |][PbN D  
Tilt Y tolerance on surfaces 1 through 3 (degrees) I(<Trn  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 L;fz7?_j  
Change in Focus                :       0.000000                            0.000000 Z8Tb43?  
Decenter X tolerance on surface 1 ;8w CQ  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 DPfN*a-P(  
Change in Focus                :       0.000000                            0.000000 y:k7eE"  
Decenter Y tolerance on surface 1 O6ltGtF  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 9H2mA$2jnE  
Change in Focus                :       0.000000                            0.000000 r9p ((ir  
Tilt X tolerance on surface (degrees) 1 79B+8= K  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 QT4vjz+|  
Change in Focus                :       0.000000                            0.000000 ?gCP"~  
Tilt Y tolerance on surface (degrees) 1  p4P"U  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .g_^! t  
Change in Focus                :       0.000000                            0.000000 Gz2\&rmN  
Decenter X tolerance on surface 2 HcpAp]L)  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 SPnW8  
Change in Focus                :       0.000000                            0.000000 **c"}S6:mC  
Decenter Y tolerance on surface 2 CHDt^(oa!B  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 zuF]E+  
Change in Focus                :       0.000000                            0.000000 sTvw@o*  
Tilt X tolerance on surface (degrees) 2 i]& >+R<6  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;8cTy8  
Change in Focus                :       0.000000                            0.000000 f||S?ns_  
Tilt Y tolerance on surface (degrees) 2 Th4}$)yrkN  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 sHQO*[[  
Change in Focus                :       0.000000                            0.000000 KK4rVb:-  
Decenter X tolerance on surface 3 tO3#kV\,  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .-1'#Z1T  
Change in Focus                :       0.000000                            0.000000 Gsy'':u  
Decenter Y tolerance on surface 3
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TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 lInf,Q7W  
Change in Focus                :       0.000000                            0.000000 obGvd6\  
Tilt X tolerance on surface (degrees) 3 9ZDbZc  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 azG"Mt|7Z  
Change in Focus                :       0.000000                            0.000000 J2k4k  
Tilt Y tolerance on surface (degrees) 3 gI/(hp3ob  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 3
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Change in Focus                :       0.000000                            0.000000
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Irregularity of surface 1 in fringes j%gle%_  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 +5GPU 9k  
Change in Focus                :       0.000000                            0.000000 b`;Cm)@X!)  
Irregularity of surface 2 in fringes bpa
'`sf  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 k{bC3)'$#R  
Change in Focus                :       0.000000                            0.000000 hJ75(I *j  
Irregularity of surface 3 in fringes M3eFG@,  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 h r6?9RJY  
Change in Focus                :       0.000000                            0.000000 u R]8ZT")  
Index tolerance on surface 1 FJFO0Hb6
  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 PgsG*5WQ  
Change in Focus                :       0.000000                            0.000000 (~fv;}}v  
Index tolerance on surface 2 wGWv<<Qw"  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 z Ece>=C  
Change in Focus                :       0.000000                           -0.000000 sAnb   
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Worst offenders: ~VV$wU!A  
Type                      Value      Criterion        Change |Z8Eu0RSb  
TSTY   2            -0.20000000     0.35349910    -0.19053324 c7nbHJi  
TSTY   2             0.20000000     0.35349910    -0.19053324 vSo1WS  
TSTX   2            -0.20000000     0.35349910    -0.19053324 2"WP>>b80  
TSTX   2             0.20000000     0.35349910    -0.19053324 ,x?Jrcx~'C  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Kd*=-  
TSTY   1             0.20000000     0.42678383    -0.11724851 1/%5pb2\  
TSTX   1            -0.20000000     0.42678383    -0.11724851 vi` VK&+r  
TSTX   1             0.20000000     0.42678383    -0.11724851 +K,T^<F;  
TSTY   3            -0.20000000     0.42861670    -0.11541563 D-e?;<  
TSTY   3             0.20000000     0.42861670    -0.11541563 N|/gwcKe  
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Estimated Performance Changes based upon Root-Sum-Square method: c GyBml1  
Nominal MTF                 :     0.54403234 Lz!H@)-mr  
Estimated change            :    -0.36299231 )"_&CYnd  
Estimated MTF               :     0.18104003 gL`aLg_  
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Compensator Statistics: lUw=YM  
Change in back focus: V`G^Jyj  
Minimum            :        -0.000000 ^?|d< J:{  
Maximum            :         0.000000 
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Mean               :        -0.000000 g!Ui|]BI9  
Standard Deviation :         0.000000 2 ]n4)vv,  
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Monte Carlo Analysis: d+"
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Number of trials: 20 5Ha(i [d  
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Initial Statistics: Normal Distribution 6q,CEm  
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  Trial       Criterion        Change <4CqG4}Y  
      1     0.42804416    -0.11598818 +W8kMuM!  
Change in Focus                :      -0.400171 +wZ|g6vMct  
      2     0.54384387    -0.00018847 bD?gwhAKA  
Change in Focus                :       1.018470 (0Jr<16si$  
      3     0.44510003    -0.09893230 X_)x Fg'k  
Change in Focus                :      -0.601922 R7c42L\QA  
      4     0.18154684    -0.36248550 :_Iz( 2hV  
Change in Focus                :       0.920681 Ml/K
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      5     0.28665820    -0.25737414 <RcB: h  
Change in Focus                :       1.253875 s+^1\  
      6     0.21263372    -0.33139862 Ox@$ }  
Change in Focus                :      -0.903878 E+/XKF  
      7     0.40051424    -0.14351809 # wyjb:Ql  
Change in Focus                :      -1.354815 W,:j>vg  
      8     0.48754161    -0.05649072 zoBp02j  
Change in Focus                :       0.215922 O2xqNQ`d  
      9     0.40357468    -0.14045766 *%%n9T  
Change in Focus                :       0.281783 R_2#7Xs  
     10     0.26315315    -0.28087919 m8INgzVTC  
Change in Focus                :      -1.048393 iF_u/#  
     11     0.26120585    -0.28282649 {fY(zHC  
Change in Focus                :       1.017611 5@n|uJA  
     12     0.24033815    -0.30369419 U !%IC7@  
Change in Focus                :      -0.109292 IDdu2HNu  
     13     0.37164046    -0.17239188 +~7[T/v+n  
Change in Focus                :      -0.692430 9fCU+s  
     14     0.48597489    -0.05805744 Z{2QDjAI;  
Change in Focus                :      -0.662040 /=QsZ,~xo  
     15     0.21462327    -0.32940907 3h6,x0AG  
Change in Focus                :       1.611296 w9Nk8OsL  
     16     0.43378226    -0.11025008 @Ph'!  
Change in Focus                :      -0.640081 -6^Ee?"  
     17     0.39321881    -0.15081353 gx2v(1?S  
Change in Focus                :       0.914906 CY"i|s  
     18     0.20692530    -0.33710703 &E
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Change in Focus                :       0.801607 IvI;Q0E-3  
     19     0.51374068    -0.03029165 `W7;-  
Change in Focus                :       0.947293 #IeG/t(  
     20     0.38013374    -0.16389860 !:~C/B{  
Change in Focus                :       0.667010 Kr`.q:0GK  
F5{GMn;j  
Number of traceable Monte Carlo files generated: 20 COd~H  
'=d y =  
Nominal     0.54403234 `.wgRUhFH;  
Best        0.54384387    Trial     2 24fN3  
Worst       0.18154684    Trial     4 8jiBLZkRf  
Mean        0.35770970 xscR Bx  
Std Dev     0.11156454 "V,dH%&j  
^}kYJvqA  
ANR611-a  
Compensator Statistics: Ko "JH=<  
Change in back focus: 6!){-IV  
Minimum            :        -1.354815 I,V'J|=j  
Maximum            :         1.611296 k1LbWR1%wB  
Mean               :         0.161872 CljEC1S#  
Standard Deviation :         0.869664 BJqb'Hjd  
!_?HSDAj"n  
90% >       0.20977951               \P
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80% >       0.22748071               :4pO/I ~  
50% >       0.38667627               @Q:?,  
20% >       0.46553746               UaHN*@  
10% >       0.50064115                K%SfTA1TCB  
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End of Run. E.yc"|n7l2  
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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 clr]
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图片:3.JPG

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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 2XeNE[  
Y1BxRd?D  
不吝赐教

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？

90% >       0.20977951                 @'S !G"\  
80% >       0.22748071                
m RtE~~p  
50% >       0.38667627                 a#,lf9M  
20% >       0.46553746                 7JP.c@s  
10% >       0.50064115 AFNE1q;{\  
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最后这个数值是MTF值呢，还是MTF的公差？ v=+>ids  
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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？？？   k12mxR/  
i(<do "Am<  
怎么没人啊，大家讨论讨论吗

没有人啊？？？

引用第2楼sansummer于2011-06-22 08:56发表的  : ~?n)1Vr|  
90% >       0.20977951                 !jxz
2Q  
80% >       0.22748071                 Awad!_VdHS  
50% >       0.38667627                 /Hl]$sJY  
20% >       0.46553746                 P:yMj&)  
10% >       0.50064115 <<P& MObqj  
....... Yxt`Uvc(^h  

<t0o{}^P*  
/a$RJ6t&3  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   RvF6bIqo  
Mode                : Sensitivities wV;qc3  
Sampling            : 2 Y|=/*?o}  
Nominal Criterion   : 0.54403234 5/v@VU
zH  
Test Wavelength     : 0.6328 `\:92+  
6*/o  
波长632.8nm 时 mtf 是 0.54403234  没达到0.6

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？ j|&?BBa9  
[e+"G <>  
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？

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

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？

恩，多多尝试