[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 xZp`Ke
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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 .GNl31f0  
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图片:2.jpg

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然后运行分析的结果如下： b1frAA  
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Analysis of Tolerances _0=$ 2Y^  
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File : E:\光学设计资料\zemax练习\f500.ZMX oEnCe  
Title: CAV Q[r5y  
Date : TUE JUN 21 2011 _#rE6./@q  
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Units are Millimeters. )6,Pmq~)  
All changes are computed using linear differences. Pg/$N5->  
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Paraxial Focus compensation only. 8f{;oO  
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WARNING: Solves should be removed prior to tolerancing. =}Xw}X+[WY  
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Mnemonics: 8lcB.M  
TFRN: Tolerance on curvature in fringes. H`X>  
TTHI: Tolerance on thickness. u&s>UkR  
TSDX: Tolerance on surface decentering in x. hp)k[|u;  
TSDY: Tolerance on surface decentering in y. T*8rR"  
TSTX: Tolerance on surface tilt in x (degrees). )A H)*Mg  
TSTY: Tolerance on surface tilt in y (degrees). TBp$S=_**  
TIRR: Tolerance on irregularity (fringes). @E@5/N6M  
TIND: Tolerance on Nd index of refraction. Wo8.tu-2  
TEDX: Tolerance on element decentering in x. YR} P;  
TEDY: Tolerance on element decentering in y. v05B7^1@_  
TETX: Tolerance on element tilt in x (degrees). R2!_)Rpf  
TETY: Tolerance on element tilt in y (degrees). A*_ |/o
 
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. q%xq\L.  
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WARNING: Boundary constraints on compensators will be ignored. 4c/.#?  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 5u3SP?.&  
Mode                : Sensitivities o?\v 8.n  
Sampling            : 2 9#A&Qvyywg  
Nominal Criterion   : 0.54403234 o$,Dh?l  
Test Wavelength     : 0.6328 4ZN&Yf`  
m?#J`?E  
:ncR7:Z  
Fields: XY Symmetric Angle in degrees cf ~TVa)M  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY <.qhW^>X  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 sLh %k  
s@c.nT%BYL  
Sensitivity Analysis: m^rrbU+HM?  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| >s+TD4OfY  
Type                      Value      Criterion        Change          Value      Criterion        Change o$FYCz n  
Fringe tolerance on surface 1 !-gjA@Pk  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 K!a4>Du{  
Change in Focus                :      -0.000000                            0.000000 =$t  
Fringe tolerance on surface 2 f-b#F2I  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 loPBHoE3@H  
Change in Focus                :       0.000000                            0.000000 tQ > IJ  
Fringe tolerance on surface 3 P:8P>#L  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ehCZhi~  
Change in Focus                :      -0.000000                            0.000000 Hg}@2n)/  
Thickness tolerance on surface 1 ?
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TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 7,![oY[  
Change in Focus                :       0.000000                            0.000000 e}Xmb$  
Thickness tolerance on surface 2 ,*Z:a4  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 M~/R1\'&j  
Change in Focus                :       0.000000                           -0.000000 ?6[X=GeUs  
Decenter X tolerance on surfaces 1 through 3 _x ;fTW0  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 b=-LQkcZhK  
Change in Focus                :       0.000000                            0.000000 t/HUG#W{  
Decenter Y tolerance on surfaces 1 through 3 hz8Z)xjJ V  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 lh?TEQ  
Change in Focus                :       0.000000                            0.000000 > l@o\  
Tilt X tolerance on surfaces 1 through 3 (degrees) D>~S-]  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 cA8"Ft{P)  
Change in Focus                :       0.000000                            0.000000 qr~=S  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ~>]/1JFz  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 c[xH:$G?Y  
Change in Focus                :       0.000000                            0.000000 k}o*=s>M  
Decenter X tolerance on surface 1 d].(x)|st  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [8J/#!B  
Change in Focus                :       0.000000                            0.000000 T)QT_ST.9  
Decenter Y tolerance on surface 1 }N6r/ VtOQ  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 *`HE$k!  
Change in Focus                :       0.000000                            0.000000 F;&a=R!.  
Tilt X tolerance on surface (degrees) 1 `?PpzDV7Y  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 1*>lYd8_  
Change in Focus                :       0.000000                            0.000000 xNaDzu"  
Tilt Y tolerance on surface (degrees) 1 QNzx(IV@  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 <&$:$_ah  
Change in Focus                :       0.000000                            0.000000 Vu`O%[Q/  
Decenter X tolerance on surface 2 cI Byv I-  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ZrA OX'>u9  
Change in Focus                :       0.000000                            0.000000 eT|"6WJ:{  
Decenter Y tolerance on surface 2 Apfs&{Uy  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 jPjFp35;zb  
Change in Focus                :       0.000000                            0.000000 $M(ZKS3,j  
Tilt X tolerance on surface (degrees) 2 %HNe"7gk  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *A,
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Change in Focus                :       0.000000                            0.000000 F9SkEf]99  
Tilt Y tolerance on surface (degrees) 2 dgIEc]#pH  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )|`#BC  
Change in Focus                :       0.000000                            0.000000 pM^r8kIH  
Decenter X tolerance on surface 3 +$YluGEJ  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 O\(0{qu  
Change in Focus                :       0.000000                            0.000000 9Fkzt=(E~  
Decenter Y tolerance on surface 3 VZ:LK  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ;6?VkF  
Change in Focus                :       0.000000                            0.000000 $ 4& )  
Tilt X tolerance on surface (degrees) 3 hu G]kv3F:  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 BZP~m=kq  
Change in Focus                :       0.000000                            0.000000 T%\f$jh6  
Tilt Y tolerance on surface (degrees) 3 ,/qS1W(  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jo-qP4w  
Change in Focus                :       0.000000                            0.000000 Ba9le|c5  
Irregularity of surface 1 in fringes v/Z!Wp1LV  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 2bB&/Uumsd  
Change in Focus                :       0.000000                            0.000000 f0^DsP  
Irregularity of surface 2 in fringes z}" Xt=G?  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 6S~lgH:  
Change in Focus                :       0.000000                            0.000000 0PK*ULwSN  
Irregularity of surface 3 in fringes k3/V$*i,1b  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 "t{|e6   
Change in Focus                :       0.000000                            0.000000 ;L
Bq!  
Index tolerance on surface 1 Q+O3Wgjy  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 #_, l7q8U  
Change in Focus                :       0.000000                            0.000000 F`3J=AJOJ  
Index tolerance on surface 2 vPV=K+1  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 `;@#yyj:_  
Change in Focus                :       0.000000                           -0.000000 YB}p`b42L  
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Worst offenders: wuv2bd )+  
Type                      Value      Criterion        Change er0hf2N]  
TSTY   2            -0.20000000     0.35349910    -0.19053324 {hr+ENgV  
TSTY   2             0.20000000     0.35349910    -0.19053324 Dt9[uyP&  
TSTX   2            -0.20000000     0.35349910    -0.19053324 "0lC:Wu]  
TSTX   2             0.20000000     0.35349910    -0.19053324 o+H;ZGT5H  
TSTY   1            -0.20000000     0.42678383    -0.11724851 X\I"%6$  
TSTY   1             0.20000000     0.42678383    -0.11724851 PuuO2TZ  
TSTX   1            -0.20000000     0.42678383    -0.11724851 U-P\F-  
TSTX   1             0.20000000     0.42678383    -0.11724851 s4$Z.xwr  
TSTY   3            -0.20000000     0.42861670    -0.11541563 bUW`MH7yJ  
TSTY   3             0.20000000     0.42861670    -0.11541563 {~"&$DY2  
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Estimated Performance Changes based upon Root-Sum-Square method: PLi[T4u  
Nominal MTF                 :     0.54403234 &J\V !uVo  
Estimated change            :    -0.36299231 a-t}L{~  
Estimated MTF               :     0.18104003 
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Compensator Statistics: Hd1e9Q,:|  
Change in back focus: $6ZO V/0  
Minimum            :        -0.000000 p~T)Af<(  
Maximum            :         0.000000 #gw ys  
Mean               :        -0.000000 -`mHb  
Standard Deviation :         0.000000 uqhNi!;  
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Monte Carlo Analysis: A.!V*1h{  
Number of trials: 20 Z2yZz
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0 ttM_]#q  
Initial Statistics: Normal Distribution PXZZPW/  
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  Trial       Criterion        Change B rGaCja  
      1     0.42804416    -0.11598818
VQr)VU=jb  
Change in Focus                :      -0.400171 t?1+Yw./em  
      2     0.54384387    -0.00018847 L}bS"=B[&W  
Change in Focus                :       1.018470 3H0~?z_  
      3     0.44510003    -0.09893230 O\64)V 0  
Change in Focus                :      -0.601922 ,8KD-"l^g  
      4     0.18154684    -0.36248550 -Mb`I >=  
Change in Focus                :       0.920681 V@0Z\&  
      5     0.28665820    -0.25737414 x"@Y[  
Change in Focus                :       1.253875 %)7HBj(*J  
      6     0.21263372    -0.33139862 ;:nO5VFOg  
Change in Focus                :      -0.903878 N798("  
      7     0.40051424    -0.14351809 SBnwlM"AN  
Change in Focus                :      -1.354815 -q9`Btz  
      8     0.48754161    -0.05649072 OPp>z0p%6X  
Change in Focus                :       0.215922 Fm@G@W7,m  
      9     0.40357468    -0.14045766 {L[n\h.4.  
Change in Focus                :       0.281783 MtYi8"+<e.  
     10     0.26315315    -0.28087919 Rc2|o.'y  
Change in Focus                :      -1.048393 |OXufV?I  
     11     0.26120585    -0.28282649 RO-ABFEi(  
Change in Focus                :       1.017611 0jY#,t?>  
     12     0.24033815    -0.30369419 26fbBt8nP  
Change in Focus                :      -0.109292 #`tn:cP  
     13     0.37164046    -0.17239188 O]OZt,k(  
Change in Focus                :      -0.692430 x)M=_u2 _  
     14     0.48597489    -0.05805744 E>j*m}b  
Change in Focus                :      -0.662040 6e1/h@p\7  
     15     0.21462327    -0.32940907 ~/hyf]*j  
Change in Focus                :       1.611296 #GBe=tm\K  
     16     0.43378226    -0.11025008 aB9Pdut  
Change in Focus                :      -0.640081 ZyBNo]  
     17     0.39321881    -0.15081353 IS;F9{  
Change in Focus                :       0.914906 iyw"|+  
     18     0.20692530    -0.33710703 Is~bA_- ;  
Change in Focus                :       0.801607 @\,WJmW  
     19     0.51374068    -0.03029165 q' };.tv  
Change in Focus                :       0.947293 d($f8{~W  
     20     0.38013374    -0.16389860 ='1J&w~7  
Change in Focus                :       0.667010 4qtjP8Zv[  
zbt>5S_  
Number of traceable Monte Carlo files generated: 20 ipB*]B F[  
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Nominal     0.54403234 ;m{*iKL6{  
Best        0.54384387    Trial     2 Xp<RGp7E  
Worst       0.18154684    Trial     4 9/OB!<*V|  
Mean        0.35770970 ;H5H7ezV  
Std Dev     0.11156454 30 VvZb  
^ q]BCOfJ(  
r40#-A$  
Compensator Statistics: h>,yqiY4p  
Change in back focus: 5_U3Fs  
Minimum            :        -1.354815 $ig%YB  
Maximum            :         1.611296 C'C'@?]  
Mean               :         0.161872 | fAt[e_E  
Standard Deviation :         0.869664 k$nQY  
[\NyBc  
90% >       0.20977951               yZ t}Jnv  
80% >       0.22748071               Yr@)W~  
50% >       0.38667627               >jjuWO3T  
20% >       0.46553746               CybHr#LBc  
10% >       0.50064115                /[YH W]  
AY['!&T  
End of Run. 9.R)iA  
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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 hv 18V>8  

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 YC\~PVG  
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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                 knZee!FA7  
80% >       0.22748071                 s)W^P4<  
50% >       0.38667627                 */ZrZ^?o  
20% >       0.46553746                 U}(*}Ut  
10% >       0.50064115 iO4YZ!  
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最后这个数值是MTF值呢，还是MTF的公差？ eZs34${fN  
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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？？？   !q!.OQ  
09pnM|8A  
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  : E4~k)4R  
90% >       0.20977951                 W
rBiAh,  
80% >       0.22748071                 kKwb)i  
50% >       0.38667627                 cXu"-/  
20% >       0.46553746                 daS l.:1  
10% >       0.50064115 r=lhYn  
....... v1wMXOR  

R@Ch3l@  
-E_lwK  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   :s|" ZR  
Mode                : Sensitivities CPGiKE  
Sampling            : 2 H0tjBnu   
Nominal Criterion   : 0.54403234 = rDo
Xm  
Test Wavelength     : 0.6328 e7rD,`NiV  
F"o K*s  
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？ fX"cQ&  
V?x&.C2Z  
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