[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 3_ly"\I\  
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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 iInWw"VbKe  
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图片:2.jpg

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然后运行分析的结果如下： xg}Q~,:  
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Analysis of Tolerances Fw S>V2R  
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File : E:\光学设计资料\zemax练习\f500.ZMX +Bf?35LP  
Title: yQ)&u+r  
Date : TUE JUN 21 2011 iF9d?9TWl  
{h=gnR-9  
Units are Millimeters. =EYWiK77a  
All changes are computed using linear differences. L#",.x  
q;}iW:r&Q  
Paraxial Focus compensation only. ZTibF'
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.g3=L  
WARNING: Solves should be removed prior to tolerancing. "[eH|z/  
Sx[ eX,q  
Mnemonics: 2Rt6)hgY  
TFRN: Tolerance on curvature in fringes. P)kJ[Zv>f  
TTHI: Tolerance on thickness. ^v`naA(  
TSDX: Tolerance on surface decentering in x. CLTkyS)C  
TSDY: Tolerance on surface decentering in y. hrm<!uKn  
TSTX: Tolerance on surface tilt in x (degrees). /O5&)%N  
TSTY: Tolerance on surface tilt in y (degrees). 9O-2  
TIRR: Tolerance on irregularity (fringes). m):*>o55  
TIND: Tolerance on Nd index of refraction. [~u&#!*W  
TEDX: Tolerance on element decentering in x. L R\LC6kM  
TEDY: Tolerance on element decentering in y. J#48c'  
TETX: Tolerance on element tilt in x (degrees). `% QvCAR  
TETY: Tolerance on element tilt in y (degrees). n1JtY75#,/  
9b/Dswxjx  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. PcBD;[cn  
fZezDm(Q  
WARNING: Boundary constraints on compensators will be ignored. \ )=WA!  
0$]iRE;O]  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm WR3,woo  
Mode                : Sensitivities m`l9d4p w?  
Sampling            : 2 *5 +GJWKN  
Nominal Criterion   : 0.54403234 A#6zINK#B  
Test Wavelength     : 0.6328 {vGJ}q?Sd"  
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~_-]> SI  
Fields: XY Symmetric Angle in degrees (c>g7d<>n  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY qa-FLUkIk!  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 NNF"si\FE  
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Sensitivity Analysis: *I)J%#  
~N/r;omVc  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| O5:bdt.  
Type                      Value      Criterion        Change          Value      Criterion        Change kzjuW  
Fringe tolerance on surface 1 0_eqO'"  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ICb!AsL  
Change in Focus                :      -0.000000                            0.000000 odSPl{.>d  
Fringe tolerance on surface 2
v&|65[<  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 QYMfxpiC  
Change in Focus                :       0.000000                            0.000000 1vxRhS&FY  
Fringe tolerance on surface 3 ~%8P0AP  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 >Jmla~A  
Change in Focus                :      -0.000000                            0.000000 ly-(F2  
Thickness tolerance on surface 1 N^dQX,j  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !JDr58  
Change in Focus                :       0.000000                            0.000000 iCPm7AU  
Thickness tolerance on surface 2 pY`$k#5  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 CtXbAcN2B  
Change in Focus                :       0.000000                           -0.000000 Td'Mc-/  
Decenter X tolerance on surfaces 1 through 3 cvaG[NF  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ln4]uqMG.  
Change in Focus                :       0.000000                            0.000000 W!wof-1  
Decenter Y tolerance on surfaces 1 through 3 Xj 1Oxm42  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8i154#l+\  
Change in Focus                :       0.000000                            0.000000 BS*79heY  
Tilt X tolerance on surfaces 1 through 3 (degrees) UPI- j#yc  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3)y1q>CQf  
Change in Focus                :       0.000000                            0.000000 zak\%yY`  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 0+e=s0s.  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 s`jlE|jtN  
Change in Focus                :       0.000000                            0.000000 o{G*7V@H  
Decenter X tolerance on surface 1 .;]WcC<3  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ryVYY>*(K  
Change in Focus                :       0.000000                            0.000000 (N}-]%#  
Decenter Y tolerance on surface 1 J, -.5  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [,;e,ld  
Change in Focus                :       0.000000                            0.000000 y#j7vO  
Tilt X tolerance on surface (degrees) 1 #4JMb#q0E  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 . vb##D  
Change in Focus                :       0.000000                            0.000000 5rows]EJJl  
Tilt Y tolerance on surface (degrees) 1 )&@YRT\c?8  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y"H`+UV  
Change in Focus                :       0.000000                            0.000000 Q>,&@  
Decenter X tolerance on surface 2 XM`GK>*aC(  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 hzsQK_;S  
Change in Focus                :       0.000000                            0.000000 Byc;r-Q5V  
Decenter Y tolerance on surface 2 8Yh'/,o=L#  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bzFac5n)Q  
Change in Focus                :       0.000000                            0.000000 L5bq\  
Tilt X tolerance on surface (degrees) 2 lxyTh'  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 J8emz8J  
Change in Focus                :       0.000000                            0.000000 8ttJ\m  
Tilt Y tolerance on surface (degrees) 2 M-nRhso  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 EB}B75)x  
Change in Focus                :       0.000000                            0.000000 Y~vk>
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Decenter X tolerance on surface 3 I=kqkuW  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ,)1C"'  
Change in Focus                :       0.000000                            0.000000 Ddr.6`VJ  
Decenter Y tolerance on surface 3 KnkmGy  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .dU91> ~Ov  
Change in Focus                :       0.000000                            0.000000 ~JT`q:l-q  
Tilt X tolerance on surface (degrees) 3 gw)4P tb!  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Cw,a)XB  
Change in Focus                :       0.000000                            0.000000 <D.E.^Y  
Tilt Y tolerance on surface (degrees) 3 ^3dc#5]Xf  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 yMNJHiE/  
Change in Focus                :       0.000000                            0.000000 8g0 #WV  
Irregularity of surface 1 in fringes ]`$6=)_X  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 6\.g,>   
Change in Focus                :       0.000000                            0.000000 ?{ )'O+s  
Irregularity of surface 2 in fringes ';3>rv_  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 epsRv&LfC  
Change in Focus                :       0.000000                            0.000000 @@D/&}#F  
Irregularity of surface 3 in fringes |KhpF1/(  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 N/o?\q8  
Change in Focus                :       0.000000                            0.000000 }ppApJT  
Index tolerance on surface 1 \^(#b,k#  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 c,r6+oX  
Change in Focus                :       0.000000                            0.000000 ~T@E
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Index tolerance on surface 2 0kUhz\"R:q  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 5S4Nx>  
Change in Focus                :       0.000000                           -0.000000 +PYV-@q  
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Worst offenders: DNmC   
Type                      Value      Criterion        Change ~aotV1
"D  
TSTY   2            -0.20000000     0.35349910    -0.19053324 `lY-/Ty  
TSTY   2             0.20000000     0.35349910    -0.19053324 Ov(k:"N  
TSTX   2            -0.20000000     0.35349910    -0.19053324 \l=A2i7TQ  
TSTX   2             0.20000000     0.35349910    -0.19053324 c^_+<C-F  
TSTY   1            -0.20000000     0.42678383    -0.11724851 D!* SA  
TSTY   1             0.20000000     0.42678383    -0.11724851 mCnl@  
TSTX   1            -0.20000000     0.42678383    -0.11724851 Oyb9 ql^  
TSTX   1             0.20000000     0.42678383    -0.11724851 Z84w9y7O<  
TSTY   3            -0.20000000     0.42861670    -0.11541563 ):Fg {7b]n  
TSTY   3             0.20000000     0.42861670    -0.11541563 w
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Estimated Performance Changes based upon Root-Sum-Square method: AIP0PJI3  
Nominal MTF                 :     0.54403234 d1yLDj?  
Estimated change            :    -0.36299231 E7$ aT^  
Estimated MTF               :     0.18104003 GB+$ed5@<  
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Compensator Statistics: v#d3W| ~  
Change in back focus: E.C=VfBW  
Minimum            :        -0.000000 ke6,&s%{j  
Maximum            :         0.000000 .D7Gog3^<  
Mean               :        -0.000000 >uJu!+#  
Standard Deviation :         0.000000 oVl:g:K40  
^!m%:r7Dr  
Monte Carlo Analysis: 6ZjUC1  
Number of trials: 20 J^WX^".E  
VaonG]Ues  
Initial Statistics: Normal Distribution ,jnaa(n  
C\[:{d  
  Trial       Criterion        Change akj#.aYk  
      1     0.42804416    -0.11598818 /`qQWB5b  
Change in Focus                :      -0.400171 s4Jy96<
 
      2     0.54384387    -0.00018847 f4`Nws-dP  
Change in Focus                :       1.018470 zl, Vj%d  
      3     0.44510003    -0.09893230 e[Z-&'  
Change in Focus                :      -0.601922 *>GRU8_}  
      4     0.18154684    -0.36248550 )eX{a/Be  
Change in Focus                :       0.920681 D7IhNWrgj  
      5     0.28665820    -0.25737414 Dl?:Mh  
Change in Focus                :       1.253875 `OZiN;*|  
      6     0.21263372    -0.33139862 Lm^vS u  
Change in Focus                :      -0.903878 yJw.z#bB#  
      7     0.40051424    -0.14351809 Cpn!}!Gnf  
Change in Focus                :      -1.354815 H.Z<T{y;  
      8     0.48754161    -0.05649072 vgn,ZcX  
Change in Focus                :       0.215922 9*s:Vff{  
      9     0.40357468    -0.14045766 {H=<5  
Change in Focus                :       0.281783 H-% B<7  
     10     0.26315315    -0.28087919 n"I{aJ]K  
Change in Focus                :      -1.048393 R<r,&X?m  
     11     0.26120585    -0.28282649 $}H,g}@0  
Change in Focus                :       1.017611 FZ FPzH  
     12     0.24033815    -0.30369419 b. :2x4  
Change in Focus                :      -0.109292 8y4t9V  
     13     0.37164046    -0.17239188 a3[,3  
Change in Focus                :      -0.692430 F:Yp1Wrb<  
     14     0.48597489    -0.05805744 9 H>JS  
Change in Focus                :      -0.662040 y+',jM  
     15     0.21462327    -0.32940907 @><8YN^)%  
Change in Focus                :       1.611296 {P==6/<2o  
     16     0.43378226    -0.11025008 ] $F%  
Change in Focus                :      -0.640081 `{ \)Wuw  
     17     0.39321881    -0.15081353 %y+v0.aWH+  
Change in Focus                :       0.914906 #,SP
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     18     0.20692530    -0.33710703 \mFgjPz  
Change in Focus                :       0.801607 Vzh\1cF  
     19     0.51374068    -0.03029165 /vLW{%  
Change in Focus                :       0.947293 RV@mAw.T  
     20     0.38013374    -0.16389860 ^aqBL  
Change in Focus                :       0.667010 o}L\b,])  
2}9M7Z",2  
Number of traceable Monte Carlo files generated: 20 1Uc/r>u9  
K*tomy  
Nominal     0.54403234 PSU}
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Best        0.54384387    Trial     2 ' $"RQ=  
Worst       0.18154684    Trial     4 C!|Yz=e  
Mean        0.35770970 S0lt_~  
Std Dev     0.11156454 b%xG^jUXsX  
q]Af I(  
I(qFIV+HR  
Compensator Statistics: CS;4ysNf  
Change in back focus: 4 udW6U  
Minimum            :        -1.354815 eI/5foA  
Maximum            :         1.611296 !{b4+!@p  
Mean               :         0.161872 HDj260a  
Standard Deviation :         0.869664 Am"&ApK  
 =tc!"{  
90% >       0.20977951               C/q
!!  
80% >       0.22748071               D/Py?<n-B  
50% >       0.38667627               /sdZf
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20% >       0.46553746               9<5S!?JL  
10% >       0.50064115                BR:Mcc  
^`bMFsP  
End of Run. x!n8Wx  
+.QJZo_  
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 %RzCJxT
 

图片:3.JPG

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r'MA$PiS'  
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 TrBW0Bn>p  
I5ZM U  
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                 216$,4i  
80% >       0.22748071                 YoBe!-E  
50% >       0.38667627                 n2EPx(~  
20% >       0.46553746                 ]qxl^Himq  
10% >       0.50064115 5~j#Z (}u  
,~DV0#"  
最后这个数值是MTF值呢，还是MTF的公差？ |Wjpnz  
?)186dp  
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？？？   c+ e~BN  
imeE&  
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  : id1cZig  
90% >       0.20977951                 |NZi2Bu  
80% >       0.22748071                 :@[\(:  
50% >       0.38667627                 ~{/M_ =  
20% >       0.46553746                 KUUA>'=  
10% >       0.50064115 #y:D{%Wp  
....... I/Vw2  

e.n(NW  
2F:qaz  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ~5N}P>4*  
Mode                : Sensitivities xqG<R5k>>  
Sampling            : 2 ;o9h|LRs  
Nominal Criterion   : 0.54403234 ,|]JaZq  
Test Wavelength     : 0.6328 j7~FR{:j  
cpQ5F;FI  
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？ Cr.YSWg)4  
.xRdKt!p  
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