[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 =#|K-X0d=  
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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 tEE4"OAy  
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图片:2.jpg

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然后运行分析的结果如下： *Y/}EX!F  
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Analysis of Tolerances ~rICPR  
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File : E:\光学设计资料\zemax练习\f500.ZMX AIX?840V  
Title: GB\
1'  
Date : TUE JUN 21 2011 7IUu] Fi  
,J)wn;@  
Units are Millimeters. _,{R3k  
All changes are computed using linear differences. h<I C d'!  
jNu`umS  
Paraxial Focus compensation only. 5w#7B  
n0rAO
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WARNING: Solves should be removed prior to tolerancing. /_.1f|{B  
1b4/  
Mnemonics: 9~ JeI/  
TFRN: Tolerance on curvature in fringes. ZxvBo4>tH  
TTHI: Tolerance on thickness. v3]mZ}W$  
TSDX: Tolerance on surface decentering in x. lPO+dm  
TSDY: Tolerance on surface decentering in y. \6WVs>z  
TSTX: Tolerance on surface tilt in x (degrees). }{S f*  
TSTY: Tolerance on surface tilt in y (degrees). .&2Nm&y$K  
TIRR: Tolerance on irregularity (fringes). z3l(4WP  
TIND: Tolerance on Nd index of refraction. k^C^.[?  
TEDX: Tolerance on element decentering in x. ll8Zo+-[  
TEDY: Tolerance on element decentering in y. !5zDnv  
TETX: Tolerance on element tilt in x (degrees). .Mb<.R3  
TETY: Tolerance on element tilt in y (degrees). (`me}8  
09L"~:rg  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. QK0-jYG^  
+fRABY5C  
WARNING: Boundary constraints on compensators will be ignored. PRQEk.C  
U+2U#v=<  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm #[$zbZ(I>:  
Mode                : Sensitivities NL}Q3Vv1.  
Sampling            : 2 =s5g9n+7  
Nominal Criterion   : 0.54403234 HBp$   
Test Wavelength     : 0.6328 .b
loaeu-  
,!7\?=G6}v  
QuWWa|g^.  
Fields: XY Symmetric Angle in degrees |rr<4>)X  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY (YC{BM}  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 Y~"5HP|  
])tUXU>  
Sensitivity Analysis: n3B#M}R  
c]1\88  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| lGZf_X)gA^  
Type                      Value      Criterion        Change          Value      Criterion        Change &$L6*+`h#  
Fringe tolerance on surface 1 A\:u5(  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1];OGJuJ2  
Change in Focus                :      -0.000000                            0.000000 " .<>(bE  
Fringe tolerance on surface 2 /{71JqFis  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 -XNawpl`  
Change in Focus                :       0.000000                            0.000000 %ZbdWHO#  
Fringe tolerance on surface 3 )~2~q7  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 EV.F/Wh  
Change in Focus                :      -0.000000                            0.000000 -Wm'@4bH  
Thickness tolerance on surface 1 d$qi.%<kh  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 /C\tJ
s  
Change in Focus                :       0.000000                            0.000000 E -+t[W  
Thickness tolerance on surface 2 -|g9__|@  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 k;V (rf`  
Change in Focus                :       0.000000                           -0.000000 KJP}0|[  
Decenter X tolerance on surfaces 1 through 3 {v>8Kp7_R  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 *F;W 1TF  
Change in Focus                :       0.000000                            0.000000 R>T9 H0  
Decenter Y tolerance on surfaces 1 through 3 J|=0 :G  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 57(5+Zme  
Change in Focus                :       0.000000                            0.000000 tTE]j-uT  
Tilt X tolerance on surfaces 1 through 3 (degrees) M'|?*aNK  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Rv)*Wo!L  
Change in Focus                :       0.000000                            0.000000 d\-v+'d*+  
Tilt Y tolerance on surfaces 1 through 3 (degrees) h-+vNhH  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 F!7\Za,  
Change in Focus                :       0.000000                            0.000000 F_d>@-<  
Decenter X tolerance on surface 1 q{CD:I:-  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 y%!zXK`cl]  
Change in Focus                :       0.000000                            0.000000 7KJ%-&L^  
Decenter Y tolerance on surface 1 Z_Y' 3'^Tw  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ~i UG24v  
Change in Focus                :       0.000000                            0.000000 @p%WFNR0  
Tilt X tolerance on surface (degrees) 1 A{%LL r:  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 6`WI S4  
Change in Focus                :       0.000000                            0.000000 T6nc/|Ot  
Tilt Y tolerance on surface (degrees) 1 Dp-j(
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TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 4QBPN@~t  
Change in Focus                :       0.000000                            0.000000 }Uue}VOA  
Decenter X tolerance on surface 2 ^y.|KA3[  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 e:+[}I)  
Change in Focus                :       0.000000                            0.000000 Rrw6\iO  
Decenter Y tolerance on surface 2 LZ}m;  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `l?(zy:R  
Change in Focus                :       0.000000                            0.000000 ~xt]g zp{  
Tilt X tolerance on surface (degrees) 2 C8
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TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~FnuO!C  
Change in Focus                :       0.000000                            0.000000 ?h)T\z  
Tilt Y tolerance on surface (degrees) 2 ib%'{?Q.  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 #`@5`;U>#  
Change in Focus                :       0.000000                            0.000000 7G=Q9^J.H  
Decenter X tolerance on surface 3 ^Eif~v  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nSpOTQ  
Change in Focus                :       0.000000                            0.000000 QB"+B]rV  
Decenter Y tolerance on surface 3 vD76IG jm  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 {sW>J0  
Change in Focus                :       0.000000                            0.000000 -unQ4G  
Tilt X tolerance on surface (degrees) 3 w*\JA+  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 s0m k<>z  
Change in Focus                :       0.000000                            0.000000 I{i6e'.jP  
Tilt Y tolerance on surface (degrees) 3 4ufT-&m};s  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 #_Z)2ESX  
Change in Focus                :       0.000000                            0.000000 c)Ne/E{!0  
Irregularity of surface 1 in fringes !.{"Ttn;s  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 y7vA[us  
Change in Focus                :       0.000000                            0.000000 yG2rAG_G&  
Irregularity of surface 2 in fringes :Q ?p^OC  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 S;j"@'gz9  
Change in Focus                :       0.000000                            0.000000 >02p,W6S>  
Irregularity of surface 3 in fringes 8&SWQ  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 'HJ<"<  
Change in Focus                :       0.000000                            0.000000 w[g`)8Ib  
Index tolerance on surface 1 Z5eM  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 0[p"8+x  
Change in Focus                :       0.000000                            0.000000 e"|ZTg+U  
Index tolerance on surface 2 f h:wmc'  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 mhI  
Change in Focus                :       0.000000                           -0.000000 Q%W>m0%  
^qLesP#   
Worst offenders: Y/T-2)D  
Type                      Value      Criterion        Change e_}tK1XY  
TSTY   2            -0.20000000     0.35349910    -0.19053324 HV{W7)  
TSTY   2             0.20000000     0.35349910    -0.19053324 w
W7#M  
TSTX   2            -0.20000000     0.35349910    -0.19053324 oG\lejO  
TSTX   2             0.20000000     0.35349910    -0.19053324 r-No\u_  
TSTY   1            -0.20000000     0.42678383    -0.11724851 UAGh2?q2  
TSTY   1             0.20000000     0.42678383    -0.11724851 jS)YYk5  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ]IH1_?HgP7  
TSTX   1             0.20000000     0.42678383    -0.11724851 C(vQR~_  
TSTY   3            -0.20000000     0.42861670    -0.11541563 fo~>y  
TSTY   3             0.20000000     0.42861670    -0.11541563 <8^ws90Y  
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Estimated Performance Changes based upon Root-Sum-Square method: K^IB1U$  
Nominal MTF                 :     0.54403234 Bh7hF?c Sj  
Estimated change            :    -0.36299231 Q]<6vo
yy  
Estimated MTF               :     0.18104003 tBVtIOm9  
u/ri {neP{  
Compensator Statistics: T1%}H3  
Change in back focus: yp
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Minimum            :        -0.000000 K{:[0oIHc  
Maximum            :         0.000000 Js^(mRv=  
Mean               :        -0.000000 S R s  
Standard Deviation :         0.000000 !6hV|2aJy  
rDGrq9  
Monte Carlo Analysis: #'n.az=1  
Number of trials: 20 <fHN^O0TS  
D^6Q`o  
Initial Statistics: Normal Distribution WLiFD.  
z:=E-+  
  Trial       Criterion        Change $xis4/2  
      1     0.42804416    -0.11598818 S0ltj8t  
Change in Focus                :      -0.400171 6{I6'+K~  
      2     0.54384387    -0.00018847 )4N1EuD6  
Change in Focus                :       1.018470 Ii<k<Bt,  
      3     0.44510003    -0.09893230 Awr(}){  
Change in Focus                :      -0.601922 s1tkiX{>  
      4     0.18154684    -0.36248550 #kE8EhQZ  
Change in Focus                :       0.920681 'F3@Xh  
      5     0.28665820    -0.25737414 WWC&-Ni  
Change in Focus                :       1.253875 ihekON":  
      6     0.21263372    -0.33139862 L`(\ud  
Change in Focus                :      -0.903878 6 X'#F,
M  
      7     0.40051424    -0.14351809 O*lE0~rJ  
Change in Focus                :      -1.354815 v]rbm}uU9  
      8     0.48754161    -0.05649072 M(I%QD  
Change in Focus                :       0.215922 Dl,sl>{  
      9     0.40357468    -0.14045766 {$>.I  
Change in Focus                :       0.281783 B>c2 *+Bk  
     10     0.26315315    -0.28087919 "&o"6ra}  
Change in Focus                :      -1.048393 eZD"!AT  
     11     0.26120585    -0.28282649 .m.
Ga|;  
Change in Focus                :       1.017611 Yhjv[9  
     12     0.24033815    -0.30369419 pH(X;OC9S  
Change in Focus                :      -0.109292 QEMT'Cs
 
     13     0.37164046    -0.17239188 g~U<0+&yw%  
Change in Focus                :      -0.692430 2:<H)oB  
     14     0.48597489    -0.05805744 e,d}4 jy  
Change in Focus                :      -0.662040 {,1>(  
     15     0.21462327    -0.32940907 ))<vCfuz2  
Change in Focus                :       1.611296 %gWQ}QF  
     16     0.43378226    -0.11025008 H[}lzL)  
Change in Focus                :      -0.640081 x U"g~hT  
     17     0.39321881    -0.15081353 \UX9[5|  
Change in Focus                :       0.914906 d c/^  
     18     0.20692530    -0.33710703 ym_as8A*Q  
Change in Focus                :       0.801607 hQ@#h`lS  
     19     0.51374068    -0.03029165 Db !8N  
Change in Focus                :       0.947293 Ikw.L  
     20     0.38013374    -0.16389860 IusZYB  
Change in Focus                :       0.667010 :4\%a4{Ie  
YV} "#  
Number of traceable Monte Carlo files generated: 20 8(\J~I[^  
;-BN~1Jg  
Nominal     0.54403234 #,97 ]  
Best        0.54384387    Trial     2 FM(EOsWk  
Worst       0.18154684    Trial     4 @/:7G.  
Mean        0.35770970 |Y?<58[!)  
Std Dev     0.11156454 qz2`%8}F)  
!\'H{,G  
U| ?68B3  
Compensator Statistics: y4$$*oai&  
Change in back focus: 5g O9 <  
Minimum            :        -1.354815 _+Sf+ta  
Maximum            :         1.611296 \3"B$Sp|=  
Mean               :         0.161872 mSvSdKKKlI  
Standard Deviation :         0.869664 $M/1pZ  
+-9-%O.(;  
90% >       0.20977951               |=KzQY|u  
80% >       0.22748071               6 EfBz  
50% >       0.38667627              
w%..*+P  
20% >       0.46553746               !
m%'aQHH(  
10% >       0.50064115                -7'|&zP  
q'4P/2)va  
End of Run. *j,bI Y&se  
gs=ok8w  
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)M-q{  

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 gK@`0/k{  
t\'MB  
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                 'DNxc  
80% >       0.22748071                 >)='.aR<  
50% >       0.38667627                 m. p'LF  
20% >       0.46553746                 CTKw2`5u  
10% >       0.50064115 7SH3k=x  
2boyBz}=S  
最后这个数值是MTF值呢，还是MTF的公差？ Z 4i5,f  
K3`!0(  
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？？？   y N9~/g  
upk
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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  : lVq5>:'}^;  
90% >       0.20977951                 73.+0x  
80% >       0.22748071                 f~Pce||e  
50% >       0.38667627                 0L8fpGJ  
20% >       0.46553746                 ! }e75=x  
10% >       0.50064115 U*\K<fw   
....... FvP
WS!H  

PH:5  
{D..(f1*u  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   [ei~Xkzkj  
Mode                : Sensitivities ! M CV@5$  
Sampling            : 2 iEr?s-or  
Nominal Criterion   : 0.54403234 ovM;6o  
Test Wavelength     : 0.6328 9DM,,h<`  
r5nHYV&7  
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？ 4XER7c  
EZI#CLT[  
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