[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 Iga+8k  
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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 l]zQSXip  
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图片:2.jpg

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然后运行分析的结果如下： BXdk0  
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Analysis of Tolerances i,;eW&  
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File : E:\光学设计资料\zemax练习\f500.ZMX zC)JOykI%  
Title: >&+V[srfD  
Date : TUE JUN 21 2011 sHBTB6)lx  
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Units are Millimeters. #p*uk  
All changes are computed using linear differences. o[Qb/ 7  
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Paraxial Focus compensation only. {u y^Bui}  
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WARNING: Solves should be removed prior to tolerancing. dI%jR&.e;  
; ,sNRES3  
Mnemonics: n5"oXpcIx  
TFRN: Tolerance on curvature in fringes. +zche  
TTHI: Tolerance on thickness. Wm-$l  
TSDX: Tolerance on surface decentering in x. -DHzBq=H  
TSDY: Tolerance on surface decentering in y. fTR6]i;  
TSTX: Tolerance on surface tilt in x (degrees). aG;F=e  
TSTY: Tolerance on surface tilt in y (degrees). pEcYfj3M  
TIRR: Tolerance on irregularity (fringes). *8,W$pe3  
TIND: Tolerance on Nd index of refraction. P]^OSPRg  
TEDX: Tolerance on element decentering in x. l9|K,YVW  
TEDY: Tolerance on element decentering in y. {~9HJDcM  
TETX: Tolerance on element tilt in x (degrees). ^ICSh8C  
TETY: Tolerance on element tilt in y (degrees). O0'|\:my  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 7P(o!%H  
VS ECD;u4c  
WARNING: Boundary constraints on compensators will be ignored. 7NT} Zwf  
oZ/"^5  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm dO2?&f  
Mode                : Sensitivities D<FQVdP  
Sampling            : 2 *j&\5|^V  
Nominal Criterion   : 0.54403234 bl>W
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Test Wavelength     : 0.6328 =TEe:%mN  
6 L4\UTr  
XZ.D<T"  
Fields: XY Symmetric Angle in degrees oh$"?N7n1  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY '"7b;%EN'  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 vzfMME17  
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Sensitivity Analysis: N`I
XSE  
 \H>T[  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| d m"R0>  
Type                      Value      Criterion        Change          Value      Criterion        Change AKjobA#  
Fringe tolerance on surface 1 nkPlfH  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 9*FA=E  
Change in Focus                :      -0.000000                            0.000000 E<-W & a}  
Fringe tolerance on surface 2 #y#TEw,  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 =/a`X[9vI  
Change in Focus                :       0.000000                            0.000000 a"xRc  
Fringe tolerance on surface 3 *jc >?)k  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ^,=}'H]  
Change in Focus                :      -0.000000                            0.000000 .{ILeG  
Thickness tolerance on surface 1 ~.^:?yCA  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 3O*
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Change in Focus                :       0.000000                            0.000000 ZhCz]z~tj6  
Thickness tolerance on surface 2 mz1m^p)~{  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 'MYKAnZ-i  
Change in Focus                :       0.000000                           -0.000000 <Tgubv+J  
Decenter X tolerance on surfaces 1 through 3 xzY/$?  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 -eV*I>G  
Change in Focus                :       0.000000                            0.000000 Ygg+=@].@  
Decenter Y tolerance on surfaces 1 through 3 (T2HUmkQ6  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ) C~#W  
Change in Focus                :       0.000000                            0.000000 ~2hzyEh  
Tilt X tolerance on surfaces 1 through 3 (degrees) 7^rT-f07  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 & ;5f/  
Change in Focus                :       0.000000                            0.000000 Oz\J+  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Y'P^]Q=}_#  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 L=Aj+  
Change in Focus                :       0.000000                            0.000000 \NDW@!X  
Decenter X tolerance on surface 1 BR@gJ(2  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 l<=k#d  
Change in Focus                :       0.000000                            0.000000 V]Ccj\Oi  
Decenter Y tolerance on surface 1 ,ynN801\m  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 o-_,l J7o^  
Change in Focus                :       0.000000                            0.000000 w_`;Mn%p  
Tilt X tolerance on surface (degrees) 1 #+6j-^<_6  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 g8Y)90 G  
Change in Focus                :       0.000000                            0.000000 ;6 d-+(@  
Tilt Y tolerance on surface (degrees) 1 x%$6l  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ^=-25%&^  
Change in Focus                :       0.000000                            0.000000 7mi=Xa:U  
Decenter X tolerance on surface 2 p[WlcbBwT  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 4?(=?0/[  
Change in Focus                :       0.000000                            0.000000 k "7,-0gz  
Decenter Y tolerance on surface 2 j3w~2q"r  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 &~.|9P/45  
Change in Focus                :       0.000000                            0.000000 dQH8s  
Tilt X tolerance on surface (degrees) 2 q2B'R   
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 c+ZdfdR  
Change in Focus                :       0.000000                            0.000000 T^d<vH  
Tilt Y tolerance on surface (degrees) 2 Wn;%B].I  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 SI6?b1;-:F  
Change in Focus                :       0.000000                            0.000000 /P[u vO  
Decenter X tolerance on surface 3 \[]BB5)8  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 8KR17i1  
Change in Focus                :       0.000000                            0.000000 9(=+OQ6  
Decenter Y tolerance on surface 3 lv.h?"Ml  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195
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Change in Focus                :       0.000000                            0.000000 ${.:(z  
Tilt X tolerance on surface (degrees) 3 3\ )bg R:  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563  874j9ky[  
Change in Focus                :       0.000000                            0.000000 ri3*~?k00  
Tilt Y tolerance on surface (degrees) 3 &BKnJ{,H  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 x5rm 2C  
Change in Focus                :       0.000000                            0.000000 <|WXFjn  
Irregularity of surface 1 in fringes tQxAZ0B^  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 SJ8 ~:"\P  
Change in Focus                :       0.000000                            0.000000 [UdJ(cGf  
Irregularity of surface 2 in fringes `tHF}  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 !L|VmLqa  
Change in Focus                :       0.000000                            0.000000 *6_>/!ywI  
Irregularity of surface 3 in fringes ZW;Re5?DJ  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Zn|lL0b{q  
Change in Focus                :       0.000000                            0.000000 0 >(hiTy<  
Index tolerance on surface 1 xw~oR|`U  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 4rCw#mVtB  
Change in Focus                :       0.000000                            0.000000
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Index tolerance on surface 2 7we='L&R  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8*VQw?{Uee  
Change in Focus                :       0.000000                           -0.000000 N-p||u  
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Worst offenders: /^si(BuC^*  
Type                      Value      Criterion        Change bWCtRli}  
TSTY   2            -0.20000000     0.35349910    -0.19053324 *&_(kq z'1  
TSTY   2             0.20000000     0.35349910    -0.19053324 7|ACJv6%9  
TSTX   2            -0.20000000     0.35349910    -0.19053324 *m&'
6qsS  
TSTX   2             0.20000000     0.35349910    -0.19053324 #cJ1Jj $  
TSTY   1            -0.20000000     0.42678383    -0.11724851 c; 1f$$>b  
TSTY   1             0.20000000     0.42678383    -0.11724851 b
9Eb"  
TSTX   1            -0.20000000     0.42678383    -0.11724851 aNICSxDN  
TSTX   1             0.20000000     0.42678383    -0.11724851 @%MGLR{pH  
TSTY   3            -0.20000000     0.42861670    -0.11541563 L[+4/a!HQ  
TSTY   3             0.20000000     0.42861670    -0.11541563 +OInf_O  
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Estimated Performance Changes based upon Root-Sum-Square method: /GNm>NSK  
Nominal MTF                 :     0.54403234 dZd]p8  
Estimated change            :    -0.36299231 6%c]{eTd9  
Estimated MTF               :     0.18104003 |mw3v>  
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Compensator Statistics: R C!~eJG!  
Change in back focus: 7Sycy#D  
Minimum            :        -0.000000 IS{>(XT{  
Maximum            :         0.000000 u3 4.   
Mean               :        -0.000000 6D4u?P,  
Standard Deviation :         0.000000 1R.6Xer  
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Monte Carlo Analysis: wX@g>(  
Number of trials: 20 PC?XE8o  
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Initial Statistics: Normal Distribution B1U7z1<  
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  Trial       Criterion        Change `qy@Qo  
      1     0.42804416    -0.11598818 =^ x1:Ak  
Change in Focus                :      -0.400171 7x$VH5jie#  
      2     0.54384387    -0.00018847 hus9Zv4  
Change in Focus                :       1.018470 -zm-|6[Wi  
      3     0.44510003    -0.09893230 Ez^wK~  
Change in Focus                :      -0.601922 }SW>ysw'm  
      4     0.18154684    -0.36248550 <q4<3A  
Change in Focus                :       0.920681 cEPqcy *  
      5     0.28665820    -0.25737414 ^K'XlM`a  
Change in Focus                :       1.253875 \q|
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      6     0.21263372    -0.33139862 +39p5O!  
Change in Focus                :      -0.903878 #ChF{mh  
      7     0.40051424    -0.14351809 7Rr +Uzb(  
Change in Focus                :      -1.354815 SivJaY%  
      8     0.48754161    -0.05649072 _s0;mvz'  
Change in Focus                :       0.215922 ]n4G]ybK%  
      9     0.40357468    -0.14045766 MF5o\-&dN  
Change in Focus                :       0.281783 M
+M\3U  
     10     0.26315315    -0.28087919 #<R6!"TNoz  
Change in Focus                :      -1.048393 @_"Z]Y ,D0  
     11     0.26120585    -0.28282649 D;oX*`  
Change in Focus                :       1.017611 Up1e4mNL  
     12     0.24033815    -0.30369419 zW; sr.  
Change in Focus                :      -0.109292 wvEdZGO8!  
     13     0.37164046    -0.17239188 CGZ3-OW@E  
Change in Focus                :      -0.692430 |#O>DdKHT
 
     14     0.48597489    -0.05805744 Cfst)[j  
Change in Focus                :      -0.662040 Z2I2 [pA  
     15     0.21462327    -0.32940907 ,D{D QJ(B  
Change in Focus                :       1.611296 pb|,rLNZ  
     16     0.43378226    -0.11025008 6"U$H$i.G  
Change in Focus                :      -0.640081 /V E|FTs  
     17     0.39321881    -0.15081353 3m/XT"D  
Change in Focus                :       0.914906 Nb/Z+  
     18     0.20692530    -0.33710703 zCFXQi  
Change in Focus                :       0.801607 67P@YL  
     19     0.51374068    -0.03029165 S,qEKWyLd  
Change in Focus                :       0.947293 ;Z-%'5hKM  
     20     0.38013374    -0.16389860 %_ Vj'z~T  
Change in Focus                :       0.667010 9at_F'>R  
:sJQ r._L  
Number of traceable Monte Carlo files generated: 20 O
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"VQ7Y`,+  
Nominal     0.54403234 iiTt{ab\Y  
Best        0.54384387    Trial     2 e6I7N?j  
Worst       0.18154684    Trial     4 h9l 6AnbJ  
Mean        0.35770970 )8JM.:,  
Std Dev     0.11156454 %v<BE tq  
A0gRX]  
rc7^~S]5  
Compensator Statistics: ;^|:*  
Change in back focus: \ H!Klp  
Minimum            :        -1.354815 ->a|  
Maximum            :         1.611296 ?!$:I8T  
Mean               :         0.161872 t,308Z  
Standard Deviation :         0.869664 :#Nrypsu  
V%[34G  
90% >       0.20977951               +E }q0GV  
80% >       0.22748071               +Z=DvKsTJ  
50% >       0.38667627               "<yJ<lS&>  
20% >       0.46553746               |sPUb;&~  
10% >       0.50064115                em?Q4t  
}o@Dsx5  
End of Run. A\)~y{9bQ  
`-w;/A"MJ  
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 T8>aU  

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 4>(
rskl_  

.._UI2MA  
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                 a6\`r^@  
80% >       0.22748071                 1x^Vv;K  
50% >       0.38667627                 .:~E.b  
20% >       0.46553746                 2BV]@]qB  
10% >       0.50064115 2ae"Sd!-2  
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最后这个数值是MTF值呢，还是MTF的公差？ [
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rG3?Z^&R+  
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？？？   ew<_2Xy"<  
iAZbh"I  
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  : (4?^X  
90% >       0.20977951                 ?d+ri  
80% >       0.22748071                 !{fu(E  
50% >       0.38667627                 [w!
T  
20% >       0.46553746                 `vz7}TY  
10% >       0.50064115 wY ??#pS  
....... O p1TsRm5L  

%a FZbLK  
#+i:s92],  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm    fDqDU  
Mode                : Sensitivities [+QyKyhTO  
Sampling            : 2 $-u c#57  
Nominal Criterion   : 0.54403234 [oXSjLQm[  
Test Wavelength     : 0.6328 Ghc U~  
(P;TM1k  
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？ ,A $IFE  
Pksr9"Ah  
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