[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 [MS.5+1Y  
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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 r6JkoPMh  
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图片:2.jpg

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然后运行分析的结果如下： od1omYsR  
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Analysis of Tolerances .4>s2  
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File : E:\光学设计资料\zemax练习\f500.ZMX ]
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Title: 5Kj4!Ai  
Date : TUE JUN 21 2011 lzG;F]  
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Units are Millimeters. ':D&c  
All changes are computed using linear differences. X3{1DY3@u  
X'7S|J6s  
Paraxial Focus compensation only. a~F@3Pd  
6;frIl;  
WARNING: Solves should be removed prior to tolerancing. 6 v^  
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Mnemonics: ZT8Ji?_n  
TFRN: Tolerance on curvature in fringes. wp.e3l  
TTHI: Tolerance on thickness. @O}j:b  
TSDX: Tolerance on surface decentering in x. 4V|z)=)A  
TSDY: Tolerance on surface decentering in y. 4>VZk^%b#  
TSTX: Tolerance on surface tilt in x (degrees). `l2<  
TSTY: Tolerance on surface tilt in y (degrees). !u4Z0!Ll  
TIRR: Tolerance on irregularity (fringes). 07Q[L'}y@  
TIND: Tolerance on Nd index of refraction. N5s
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TEDX: Tolerance on element decentering in x. IXvz&4VD  
TEDY: Tolerance on element decentering in y. A;-z#R#V5  
TETX: Tolerance on element tilt in x (degrees). 7. 9s.*  
TETY: Tolerance on element tilt in y (degrees). ef}E.Bl  
iWM7,=1+  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Mp"c
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V/}>>4  
WARNING: Boundary constraints on compensators will be ignored. %;(|KrUN  
RyOT[J  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm &rztC]jF  
Mode                : Sensitivities }&T<wm!  
Sampling            : 2 (1AA;)`Kp  
Nominal Criterion   : 0.54403234 .(7C)P{.0  
Test Wavelength     : 0.6328 QHs:=i~VH  
cbCE $  
M=[q+A  
Fields: XY Symmetric Angle in degrees bq3fiT9  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @y0bU*v7  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 m>+,^`0  
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Sensitivity Analysis: &O6;nJEI  
X!rQ@F3  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 6+$d  
Type                      Value      Criterion        Change          Value      Criterion        Change dD^_^'i  
Fringe tolerance on surface 1 Uty(sDtu  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 5<O61Lgx  
Change in Focus                :      -0.000000                            0.000000 / }XsuH  
Fringe tolerance on surface 2 `}9 1S  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 >[XOMKgQ](  
Change in Focus                :       0.000000                            0.000000 kyxSIQ^  
Fringe tolerance on surface 3 Naf`hE9  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 I*W9VhIOV  
Change in Focus                :      -0.000000                            0.000000 &@W4^-9  
Thickness tolerance on surface 1 5G'&9{oB  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Sz|Y$,  
Change in Focus                :       0.000000                            0.000000 g/l0}%  
Thickness tolerance on surface 2 /;<e.  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 762o~vY6$  
Change in Focus                :       0.000000                           -0.000000 ~w1{zxs  
Decenter X tolerance on surfaces 1 through 3 "6E1W,|{  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 nI*
(a
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Change in Focus                :       0.000000                            0.000000 n=G>y7b  
Decenter Y tolerance on surfaces 1 through 3 RUS7Z~5  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9xK4!~5V  
Change in Focus                :       0.000000                            0.000000 mI7rx`4H  
Tilt X tolerance on surfaces 1 through 3 (degrees) Fp5NRM*-!  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 iM/*&O}  
Change in Focus                :       0.000000                            0.000000 ayH%  qp  
Tilt Y tolerance on surfaces 1 through 3 (degrees) mo|PrLV  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 EtR@sJ<  
Change in Focus                :       0.000000                            0.000000 %Rd~|$@>x  
Decenter X tolerance on surface 1 KkdG.c'  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 MdVCD^B  
Change in Focus                :       0.000000                            0.000000 ?GUz?'d  
Decenter Y tolerance on surface 1 }RA3$%3  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 vLnq%@x  
Change in Focus                :       0.000000                            0.000000 6+Wr6'kuH  
Tilt X tolerance on surface (degrees) 1 mmrW`~-  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ZVdsxo<  
Change in Focus                :       0.000000                            0.000000 ;&+[W(7Sy  
Tilt Y tolerance on surface (degrees) 1 x2j/8]'o  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 -7-Fd_F8  
Change in Focus                :       0.000000                            0.000000 5W[3_P+  
Decenter X tolerance on surface 2 j8[`~pb  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ]cF1c90%  
Change in Focus                :       0.000000                            0.000000 t+=12{9;f  
Decenter Y tolerance on surface 2 _.d}lK3$2  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Gd30Be2gd  
Change in Focus                :       0.000000                            0.000000 U`bC>sCp  
Tilt X tolerance on surface (degrees) 2 c
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TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 +CnyK(V  
Change in Focus                :       0.000000                            0.000000 <qbZG}u  
Tilt Y tolerance on surface (degrees) 2 Kk!6B  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 E8T"{ R80  
Change in Focus                :       0.000000                            0.000000 ,+ns {ppn  
Decenter X tolerance on surface 3 gdoJ4b  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Y!++CMzU  
Change in Focus                :       0.000000                            0.000000 !lQ#sL`  
Decenter Y tolerance on surface 3 ?ID* /u|X  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 IF&g.
R  
Change in Focus                :       0.000000                            0.000000 -yX

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Tilt X tolerance on surface (degrees) 3 \6`v.B&v  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Z:#.;wA  
Change in Focus                :       0.000000                            0.000000 GB&Nt{  
Tilt Y tolerance on surface (degrees) 3 [c&2i`C  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ]j& FbP)3  
Change in Focus                :       0.000000                            0.000000 5TXg;v#Z  
Irregularity of surface 1 in fringes //\ds71h  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 cT/3yf  
Change in Focus                :       0.000000                            0.000000 OJMvn'y  
Irregularity of surface 2 in fringes K#GXpj  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _:wZmZU}  
Change in Focus                :       0.000000                            0.000000 3C277nx  
Irregularity of surface 3 in fringes 9 '2=  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 (b
g}an  
Change in Focus                :       0.000000                            0.000000 "DVt3E  
Index tolerance on surface 1 7<h.KZPc  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 u$WBc\j  
Change in Focus                :       0.000000                            0.000000 +?qf`p.{  
Index tolerance on surface 2 84iJ[F
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TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 [X;>*-  
Change in Focus                :       0.000000                           -0.000000 X3P&"}a  
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Worst offenders: sS C?io  
Type                      Value      Criterion        Change 98BYtxa
 
TSTY   2            -0.20000000     0.35349910    -0.19053324 ^4+r*YvcM  
TSTY   2             0.20000000     0.35349910    -0.19053324 T1l&B  
TSTX   2            -0.20000000     0.35349910    -0.19053324 >HE,'  
TSTX   2             0.20000000     0.35349910    -0.19053324 `Jn,IDq  
TSTY   1            -0.20000000     0.42678383    -0.11724851 n4^*h4J7  
TSTY   1             0.20000000     0.42678383    -0.11724851 N1PECLS?  
TSTX   1            -0.20000000     0.42678383    -0.11724851 6dF$?I&  
TSTX   1             0.20000000     0.42678383    -0.11724851 |}Q( F+cL  
TSTY   3            -0.20000000     0.42861670    -0.11541563 m'd^?Qc
 
TSTY   3             0.20000000     0.42861670    -0.11541563 g<f
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Estimated Performance Changes based upon Root-Sum-Square method: Y;8 >=0ye  
Nominal MTF                 :     0.54403234 &kb\,mQ  
Estimated change            :    -0.36299231 smV!y8&  
Estimated MTF               :     0.18104003 llNXQlP\B  
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Compensator Statistics: /E)9v$!  
Change in back focus: *yrnK3  
Minimum            :        -0.000000 H\ 3M  
Maximum            :         0.000000 ~NxEc8Y  
Mean               :        -0.000000 iu+3,]7Fm  
Standard Deviation :         0.000000 !;i*\ a  
.%_)*NUZ  
Monte Carlo Analysis: u2 7S%2P  
Number of trials: 20 Z)NrhJC  
9J?W '8s5  
Initial Statistics: Normal Distribution Y=9j2 ]t  
m`'=)x|  
  Trial       Criterion        Change 9GThyY  
      1     0.42804416    -0.11598818 5lO^;.cS,  
Change in Focus                :      -0.400171 w}d}hI  
      2     0.54384387    -0.00018847 Y:wF5pp;  
Change in Focus                :       1.018470 f7Zf}1|  
      3     0.44510003    -0.09893230 L.kD,'G}>  
Change in Focus                :      -0.601922 8\DME  
      4     0.18154684    -0.36248550 L7m`HVCt&  
Change in Focus                :       0.920681 A]j}'  
      5     0.28665820    -0.25737414 g&bwtEZ  
Change in Focus                :       1.253875 e[}],W  
      6     0.21263372    -0.33139862 IdF$Ml#[h  
Change in Focus                :      -0.903878 Bq *[c=(2  
      7     0.40051424    -0.14351809 0vDg8i\  
Change in Focus                :      -1.354815 @m?{80;uQ  
      8     0.48754161    -0.05649072 R3?:\d{  
Change in Focus                :       0.215922 +lKrj\Xj  
      9     0.40357468    -0.14045766 i *B:El1  
Change in Focus                :       0.281783 X($6IL6m  
     10     0.26315315    -0.28087919 ;,dkJ7M  
Change in Focus                :      -1.048393 )=Zsv40O  
     11     0.26120585    -0.28282649 Q&gPa]z]}  
Change in Focus                :       1.017611 c# xO<  
     12     0.24033815    -0.30369419 <PioQ>~  
Change in Focus                :      -0.109292 !_dR'  
     13     0.37164046    -0.17239188 ]%Y\ZIS  
Change in Focus                :      -0.692430 9\>sDSCx  
     14     0.48597489    -0.05805744 ) \
4 |  
Change in Focus                :      -0.662040 6Hwxx5>r  
     15     0.21462327    -0.32940907 9Eg&CZ,9$D  
Change in Focus                :       1.611296 {V0>iN:~S  
     16     0.43378226    -0.11025008 0V3gKd7  
Change in Focus                :      -0.640081 AFm,CINa  
     17     0.39321881    -0.15081353 \6:>
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Change in Focus                :       0.914906 gfm;xT/y  
     18     0.20692530    -0.33710703 V!xwb:J  
Change in Focus                :       0.801607 <5I1DF[  
     19     0.51374068    -0.03029165 UWw}!1  
Change in Focus                :       0.947293 U@?6*,b(.  
     20     0.38013374    -0.16389860 JpmB;aL#%  
Change in Focus                :       0.667010 ]\BUoQ7I/  
5%P[^}  
Number of traceable Monte Carlo files generated: 20 7@IFp~6<qK  
t:=k)B  
Nominal     0.54403234 +0"x|$f~  
Best        0.54384387    Trial     2 +zsZNJ(U  
Worst       0.18154684    Trial     4 xs%LRF#u  
Mean        0.35770970 uY;R8CiD  
Std Dev     0.11156454 G?/c/rG  
w;+ br  
U(~U!O}  
Compensator Statistics: /EU; ?O  
Change in back focus: J$QBI&D  
Minimum            :        -1.354815 Vho0eV=  
Maximum            :         1.611296 LwOJ|jA(,  
Mean               :         0.161872 'gDe3@ci!  
Standard Deviation :         0.869664 %b=p< h'(  
E:w:4[neh  
90% >       0.20977951               9U^$.Lb  
80% >       0.22748071               _!!}'fMC  
50% >       0.38667627               Q]rqD83((  
20% >       0.46553746               ;'HF'Z  
10% >       0.50064115                ru{f]|  
X>t3|
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End of Run. Obo_YE  
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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 XV=S)  

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 ~+HoSXu@E  
sx5r(0Z  
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                 4:1)~z  
80% >       0.22748071                 2 9#]Vr  
50% >       0.38667627                 8_xLl2  
20% >       0.46553746                 (oaYF+T  
10% >       0.50064115 3t(c_:[%  
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最后这个数值是MTF值呢，还是MTF的公差？ HZZDv+  
2o5;Uz1{  
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？？？   `;F2n2@  
6RK\}@^=K  
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  : 3,6Ox45  
90% >       0.20977951                 C}"@RHEu  
80% >       0.22748071                 U Cb02h  
50% >       0.38667627                 /[pqI0sf<A  
20% >       0.46553746                 x"\
qf'{D  
10% >       0.50064115 tZ8e`r*  
....... G[z .&l  

3 ^}A %-bS  
m<@z}%v-  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   p'Bm8=AwD  
Mode                : Sensitivities V|FrN*m  
Sampling            : 2 3V;gW%
>  
Nominal Criterion   : 0.54403234 /q1s;I  
Test Wavelength     : 0.6328 f_\_9o"l  
{eHAg<+  
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？ 82:W
vp6  
bB6[Xj{  
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