[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 p<#WueR[  
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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 aw z(W>  
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图片:2.jpg

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然后运行分析的结果如下： I^h^QeBis  
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Analysis of Tolerances GAK!qLy9  
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File : E:\光学设计资料\zemax练习\f500.ZMX R"NR-iU  
Title: &s.S)'l4l  
Date : TUE JUN 21 2011 IbFS8 *a\  
ZzZy2.7  
Units are Millimeters. .W[ 9G\  
All changes are computed using linear differences. L4bx [  
~gz_4gzb  
Paraxial Focus compensation only. K0hmRR=  
|G^w2"D_Z  
WARNING: Solves should be removed prior to tolerancing. ?7Kl)p3  
p*F.WxB)4  
Mnemonics:  xY]Y  
TFRN: Tolerance on curvature in fringes. B}n tD  
TTHI: Tolerance on thickness. 7[=MgnmuC  
TSDX: Tolerance on surface decentering in x. QDO.
&G2  
TSDY: Tolerance on surface decentering in y. 0Z.bd=H  
TSTX: Tolerance on surface tilt in x (degrees). : b9X?%L~  
TSTY: Tolerance on surface tilt in y (degrees). t= =+SHGP  
TIRR: Tolerance on irregularity (fringes). A.0eeX{  
TIND: Tolerance on Nd index of refraction. g\;&Z  
TEDX: Tolerance on element decentering in x. Uy$1X  
TEDY: Tolerance on element decentering in y. -:mT8'.F-  
TETX: Tolerance on element tilt in x (degrees). WvV!F?uqZ  
TETY: Tolerance on element tilt in y (degrees). -\ {.]KL  
QrmiQ]d*p  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. v(5zSo  
:Fe}.* t  
WARNING: Boundary constraints on compensators will be ignored. #9Src\V  
7OF6;@<  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm S6~&g|T,  
Mode                : Sensitivities i7N|p9O.  
Sampling            : 2 g<ZB9;FX %  
Nominal Criterion   : 0.54403234 :xd)]Ns  
Test Wavelength     : 0.6328 yHrYSE
M  
2`2S94'  
re\pE2&B  
Fields: XY Symmetric Angle in degrees mU d['Z  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 7RE'KH_$  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 PH6!
T/2[  
rd#O ]   
Sensitivity Analysis: /*v}.fH%  
ZboY]1L[j  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| h^Bp^V5#  
Type                      Value      Criterion        Change          Value      Criterion        Change .(D,CGtYb  
Fringe tolerance on surface 1 Cp[{|U-?G  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 9Tju+KcK  
Change in Focus                :      -0.000000                            0.000000 =
\[}@Kh  
Fringe tolerance on surface 2 _ML`Vh]  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ix.I)  
Change in Focus                :       0.000000                            0.000000 6 07"Z
\  
Fringe tolerance on surface 3 El9D1],  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 2D`_!OG=  
Change in Focus                :      -0.000000                            0.000000 #`kLU:  
Thickness tolerance on surface 1 MlbQLtw  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 o3=2`BvJ  
Change in Focus                :       0.000000                            0.000000 c-?2>%;(V  
Thickness tolerance on surface 2 eaNMcC1  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Y*}xD;c k  
Change in Focus                :       0.000000                           -0.000000 [\41  
Decenter X tolerance on surfaces 1 through 3 P&3Z,f
0  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Hu4\4x$?  
Change in Focus                :       0.000000                            0.000000 7[ 82~jM[  
Decenter Y tolerance on surfaces 1 through 3 Vdpvo;4uy  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;s$bVGHr  
Change in Focus                :       0.000000                            0.000000 Imv]V6"D=  
Tilt X tolerance on surfaces 1 through 3 (degrees) oM<Y o%n  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 d z-  
Change in Focus                :       0.000000                            0.000000 reO^_q'  
Tilt Y tolerance on surfaces 1 through 3 (degrees) *_Sx^`"X`l  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 @'D ,
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Change in Focus                :       0.000000                            0.000000 "
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Decenter X tolerance on surface 1 UoD@ix&0  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 =zetZJg  
Change in Focus                :       0.000000                            0.000000 ke~S[bL%-  
Decenter Y tolerance on surface 1 .66_g@1  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 KV1/!r+
*  
Change in Focus                :       0.000000                            0.000000 L5wrc4  
Tilt X tolerance on surface (degrees) 1 IRq@~vdt)  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 =&9x}4`;%  
Change in Focus                :       0.000000                            0.000000 
Vm_<eyI2  
Tilt Y tolerance on surface (degrees) 1 2%i3[N*  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ,.Sd)JB'  
Change in Focus                :       0.000000                            0.000000 iUH{rh!  
Decenter X tolerance on surface 2 I4Y;
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TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 y
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Change in Focus                :       0.000000                            0.000000 CLn}BxgD  
Decenter Y tolerance on surface 2 z[E gMS!  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 XFS"~{  
Change in Focus                :       0.000000                            0.000000 ~WKcO&  
Tilt X tolerance on surface (degrees) 2 GM{J3O=  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 IegZ)&_n  
Change in Focus                :       0.000000                            0.000000 Z` ;.62S  
Tilt Y tolerance on surface (degrees) 2 BS(XEmJn&j  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 li`4&<WG
C  
Change in Focus                :       0.000000                            0.000000 D=!e6E<>@  
Decenter X tolerance on surface 3 i!tF{'*%#  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 fc,^H&
 
Change in Focus                :       0.000000                            0.000000 ]TTQ;F  
Decenter Y tolerance on surface 3 P.j0Xlof  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Q*GJREC  
Change in Focus                :       0.000000                            0.000000 d^.@~  
Tilt X tolerance on surface (degrees) 3 n#.~XNbxv  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 $@R[$/  
Change in Focus                :       0.000000                            0.000000 'IykIf  
Tilt Y tolerance on surface (degrees) 3 dM^
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TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ruf*-&Kr7  
Change in Focus                :       0.000000                            0.000000  )ld !(d=  
Irregularity of surface 1 in fringes sz?/4tY
 
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 E+tV7xa~  
Change in Focus                :       0.000000                            0.000000 8'nxc#&  
Irregularity of surface 2 in fringes 4/Wqeq,E8  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 faqh }4
 
Change in Focus                :       0.000000                            0.000000 L FncY(b  
Irregularity of surface 3 in fringes X (0`"rjg  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 {,Py%.vvR  
Change in Focus                :       0.000000                            0.000000 i#RT4}l"a  
Index tolerance on surface 1 z4UJo!{S  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 x9lG$0k:V  
Change in Focus                :       0.000000                            0.000000 X / {;  
Index tolerance on surface 2 }ag -J."5M  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Z~WUILx,  
Change in Focus                :       0.000000                           -0.000000 a-9Y &#U  
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Worst offenders: hG8!aJo  
Type                      Value      Criterion        Change <"SOH;w  
TSTY   2            -0.20000000     0.35349910    -0.19053324 b5Sgf'B^  
TSTY   2             0.20000000     0.35349910    -0.19053324 2y"|l  
TSTX   2            -0.20000000     0.35349910    -0.19053324 bt2`elH|  
TSTX   2             0.20000000     0.35349910    -0.19053324 ZB|y  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Vui
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TSTY   1             0.20000000     0.42678383    -0.11724851 1(;_1@P  
TSTX   1            -0.20000000     0.42678383    -0.11724851 WF!u2E+  
TSTX   1             0.20000000     0.42678383    -0.11724851 S.Z2gFE&tu  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Sj`GP p  
TSTY   3             0.20000000     0.42861670    -0.11541563 u5LrZt]k  

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Estimated Performance Changes based upon Root-Sum-Square method: 2/coa+Qkv]  
Nominal MTF                 :     0.54403234 QUSyVp{$  
Estimated change            :    -0.36299231 x U1](O  
Estimated MTF               :     0.18104003 z;F6:aBa  
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Compensator Statistics: uv}?8$<\  
Change in back focus: C'a%piX  
Minimum            :        -0.000000 Go8?8*  
Maximum            :         0.000000 G5
R"5d'  
Mean               :        -0.000000 <$8`]e?I  
Standard Deviation :         0.000000
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Monte Carlo Analysis: U11bQ4ak  
Number of trials: 20 nJ]oApb/-  
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Initial Statistics: Normal Distribution O6gl[aZN  
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  Trial       Criterion        Change qVpV ZH!  
      1     0.42804416    -0.11598818 5Lo\[K>j  
Change in Focus                :      -0.400171 GW[g!66^  
      2     0.54384387    -0.00018847 uq~Z  
Change in Focus                :       1.018470 @'Y^
A  
      3     0.44510003    -0.09893230 j\o<r0I  
Change in Focus                :      -0.601922 ("+J*u*kq_  
      4     0.18154684    -0.36248550 @Ft\~ +}  
Change in Focus                :       0.920681 5,;>b^gXY`  
      5     0.28665820    -0.25737414 bIR&e E  
Change in Focus                :       1.253875 1F*3K3T {  
      6     0.21263372    -0.33139862 Rx}*I00  
Change in Focus                :      -0.903878 v*pN~}5  
      7     0.40051424    -0.14351809 _$oN"pj  
Change in Focus                :      -1.354815 -!~T$}/F  
      8     0.48754161    -0.05649072 zK5/0zMZ  
Change in Focus                :       0.215922 bJ$6[H-:  
      9     0.40357468    -0.14045766 R'#1|eWCa  
Change in Focus                :       0.281783 p#yq'kY  
     10     0.26315315    -0.28087919 sFvu@Wm'7W  
Change in Focus                :      -1.048393 PU"C('AP  
     11     0.26120585    -0.28282649 }#0i1]n$D  
Change in Focus                :       1.017611 D (>,#F  
     12     0.24033815    -0.30369419 |6ZH+6[  
Change in Focus                :      -0.109292 VX;br1
$X  
     13     0.37164046    -0.17239188 R[%ZyQ_  
Change in Focus                :      -0.692430 49gm=XPm  
     14     0.48597489    -0.05805744 O:'ENoQ:&  
Change in Focus                :      -0.662040 d;<gwCc  
     15     0.21462327    -0.32940907 $P{|^ou3a#  
Change in Focus                :       1.611296 K]  
     16     0.43378226    -0.11025008 mn>$K"_k  
Change in Focus                :      -0.640081 1hz:AUH  
     17     0.39321881    -0.15081353 Q|gRBu  
Change in Focus                :       0.914906 9HtzBS  
     18     0.20692530    -0.33710703 =tS1|_  
Change in Focus                :       0.801607 W$I^Ej}>$  
     19     0.51374068    -0.03029165 Al0 i{.V  
Change in Focus                :       0.947293 323zR*\m  
     20     0.38013374    -0.16389860 .:`+4n  
Change in Focus                :       0.667010 #DqVh!t"  
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Number of traceable Monte Carlo files generated: 20 x3`b5^  
MHm=X8eg  
Nominal     0.54403234 ;VLv2J*
 
Best        0.54384387    Trial     2 FK^JCs^  
Worst       0.18154684    Trial     4 aLWNqe&1  
Mean        0.35770970 |3a1hCxt  
Std Dev     0.11156454 3p%B  
fW'@+<b  
GW29Rj1  
Compensator Statistics: ~)ecQ  
Change in back focus: $wQk
Tx  
Minimum            :        -1.354815 `2B,+ytW8  
Maximum            :         1.611296 |2YkZ nJn  
Mean               :         0.161872 O]XdPH20  
Standard Deviation :         0.869664 ?tf/#5t}  
w6PKr^  
90% >       0.20977951               o)(N*tC  
80% >       0.22748071               6<uJ}3  
50% >       0.38667627               l\?HeVk^  
20% >       0.46553746               iPD5 KsAOA  
10% >       0.50064115                {x-iBg9#l2  
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End of Run. "M GX(SQ  
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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 o:p6[SGd  

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 WeqE9@V  
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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                 *2?-6  
80% >       0.22748071                 
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50% >       0.38667627                 q_hkI]  
20% >       0.46553746                 csEF^T-  
10% >       0.50064115 oHW:s96e  
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最后这个数值是MTF值呢，还是MTF的公差？ DE$HF*WY  
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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？？？   hk +@ngh%  
*hk8[  
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  : K,$Ro@!  
90% >       0.20977951                 2H]~X9,z2  
80% >       0.22748071                 6]mFw{6qn1  
50% >       0.38667627                 e=).0S`*F  
20% >       0.46553746                 dB=aq34l  
10% >       0.50064115 Y~fa=
R{W  
....... i:@n6GW+iw  

k
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F s{}bQyQ  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   br[n5  
Mode                : Sensitivities z^YL$  
Sampling            : 2 ]CnqPLqL  
Nominal Criterion   : 0.54403234 EYaX@|)  
Test Wavelength     : 0.6328 A $GiO  
>+3tOv3:  
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？ Kd%>:E*  
0D=7Mef  
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