[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 r Db>&s3  
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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 9zgNjjCl]  
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图片:2.jpg

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然后运行分析的结果如下： iS@\ =CK  
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Analysis of Tolerances ["3d
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File : E:\光学设计资料\zemax练习\f500.ZMX qvt-  
Title: v\ZBv zd  
Date : TUE JUN 21 2011 (OQ?<'Qa  

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Units are Millimeters. #1$}S=8*f  
All changes are computed using linear differences. r@T| e  
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Paraxial Focus compensation only. bdV3v`  
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WARNING: Solves should be removed prior to tolerancing. i#,1iVSG  
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Mnemonics: ~SVQ;U)-  
TFRN: Tolerance on curvature in fringes. 2/tb6' =  
TTHI: Tolerance on thickness. Sb^ b)q"  
TSDX: Tolerance on surface decentering in x. q|q::q*  
TSDY: Tolerance on surface decentering in y. Vdvx"s[`m  
TSTX: Tolerance on surface tilt in x (degrees). DY><qk  
TSTY: Tolerance on surface tilt in y (degrees). TC-f%1(  
TIRR: Tolerance on irregularity (fringes). j%M @#  
TIND: Tolerance on Nd index of refraction. r`]7S_t5T  
TEDX: Tolerance on element decentering in x. 9YSVK\2$  
TEDY: Tolerance on element decentering in y. IYNM
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TETX: Tolerance on element tilt in x (degrees). + x_wYv  
TETY: Tolerance on element tilt in y (degrees). Qp&?L"U)2  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. K<,Y^3]6?  
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WARNING: Boundary constraints on compensators will be ignored. }Z6nN)[|0Y  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm I2*oTUSik  
Mode                : Sensitivities gY\mXM*^  
Sampling            : 2 w$% BlqN  
Nominal Criterion   : 0.54403234 ~\bHfiIDy  
Test Wavelength     : 0.6328 g!`BXmW  
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Fields: XY Symmetric Angle in degrees oF&IC j0  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ^HoJ.oC/  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 "sIN86pCs  
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Sensitivity Analysis: agTK=  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| DsG !S*  
Type                      Value      Criterion        Change          Value      Criterion        Change &0h=4i=6r  
Fringe tolerance on surface 1 x[a'(5PwY  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 'T{pdEn8u  
Change in Focus                :      -0.000000                            0.000000 a~F u  
Fringe tolerance on surface 2 :`j"Sj!t3  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ]d~MEa9Y|  
Change in Focus                :       0.000000                            0.000000 )rS^F<C  
Fringe tolerance on surface 3 {8W |W2o$!  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 (F_7%!g1d  
Change in Focus                :      -0.000000                            0.000000 I>8Bc  
Thickness tolerance on surface 1 np&HEh 6  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 E'fX&[  
Change in Focus                :       0.000000                            0.000000 DvU~%%(0^  
Thickness tolerance on surface 2 ],!pp3U  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 :hi$}xHa  
Change in Focus                :       0.000000                           -0.000000 C=M?  
Decenter X tolerance on surfaces 1 through 3 N_|YOw6  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 xDNw/'  
Change in Focus                :       0.000000                            0.000000 wP+'04H0  
Decenter Y tolerance on surfaces 1 through 3 baA HP"  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 C3^X1F0  
Change in Focus                :       0.000000                            0.000000 ]q@rGD85K  
Tilt X tolerance on surfaces 1 through 3 (degrees) D_]i/ F%  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Es_SCWJ  
Change in Focus                :       0.000000                            0.000000 Di]Iy  
Tilt Y tolerance on surfaces 1 through 3 (degrees) `7+tPbjs  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 HP1X\h!Ke  
Change in Focus                :       0.000000                            0.000000 i,\t]EJA
U  
Decenter X tolerance on surface 1 H7 o$O  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 u9da]*\7y  
Change in Focus                :       0.000000                            0.000000 =W97|BIW,  
Decenter Y tolerance on surface 1 Bx_8@+  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Fvcq^uZ  
Change in Focus                :       0.000000                            0.000000 $Ykp8u,(  
Tilt X tolerance on surface (degrees) 1 jFK9?cLT  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 \q>e1-  
Change in Focus                :       0.000000                            0.000000 xNkwTDN5  
Tilt Y tolerance on surface (degrees) 1 \3 O-}n1S  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 70I4-[/z[d  
Change in Focus                :       0.000000                            0.000000 c>%z)uY>/  
Decenter X tolerance on surface 2 &St~!y6M?  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 w2RESpi  
Change in Focus                :       0.000000                            0.000000 gs)%.k[BqG  
Decenter Y tolerance on surface 2 Ynt&cdK9
  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 @/Wty@PU  
Change in Focus                :       0.000000                            0.000000 ^.B `Z{Jb  
Tilt X tolerance on surface (degrees) 2 B_6v'=7]  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 h1D~AgZOVj  
Change in Focus                :       0.000000                            0.000000 ~P_d0A~T  
Tilt Y tolerance on surface (degrees) 2 .LhbhUEfn  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4jue_jsle  
Change in Focus                :       0.000000                            0.000000 LU 5 `!0m  
Decenter X tolerance on surface 3 U_=wL  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Cvu8X&y  
Change in Focus                :       0.000000                            0.000000 zMHf?HQ-Z  
Decenter Y tolerance on surface 3 'KIi!pA.  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ct|'I]nB.h  
Change in Focus                :       0.000000                            0.000000 JJZXSBAOU  
Tilt X tolerance on surface (degrees) 3 @a7(*
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TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 PY3V
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Change in Focus                :       0.000000                            0.000000 bQnwi?2  
Tilt Y tolerance on surface (degrees) 3 NiQc2\4%  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 8b#Yd  
Change in Focus                :       0.000000                            0.000000 qjRiTIp9q  
Irregularity of surface 1 in fringes
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TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 a[{QlD^D  
Change in Focus                :       0.000000                            0.000000 yP=isi#dDY  
Irregularity of surface 2 in fringes Qak@~b  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 3B_} :  
Change in Focus                :       0.000000                            0.000000 x /Ky: Ky  
Irregularity of surface 3 in fringes e
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TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 0?*I_[Y  
Change in Focus                :       0.000000                            0.000000 F~- S3p  
Index tolerance on surface 1
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TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 eVK<%r=  
Change in Focus                :       0.000000                            0.000000 $Q7E#  
Index tolerance on surface 2 X52jqXjg  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 .j4ziRa-  
Change in Focus                :       0.000000                           -0.000000 %TggNU,  
7 V1k$S(  
Worst offenders: q,>F#A'  
Type                      Value      Criterion        Change 7JwWM2N?V  
TSTY   2            -0.20000000     0.35349910    -0.19053324 7G=P|T\  
TSTY   2             0.20000000     0.35349910    -0.19053324 (uxQBy  
TSTX   2            -0.20000000     0.35349910    -0.19053324 jN[6JY1  
TSTX   2             0.20000000     0.35349910    -0.19053324 5pyvs;As  
TSTY   1            -0.20000000     0.42678383    -0.11724851 (p
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TSTY   1             0.20000000     0.42678383    -0.11724851 >-o:> 5  
TSTX   1            -0.20000000     0.42678383    -0.11724851 z4`n%~w1b  
TSTX   1             0.20000000     0.42678383    -0.11724851 3\.)y49,1  
TSTY   3            -0.20000000     0.42861670    -0.11541563 qJzK8eW  
TSTY   3             0.20000000     0.42861670    -0.11541563 =5_F9nk-  
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Estimated Performance Changes based upon Root-Sum-Square method: p00Bgo  
Nominal MTF                 :     0.54403234 5BO!K$6  
Estimated change            :    -0.36299231 F"P:9`/  
Estimated MTF               :     0.18104003 Q&'Nr3H#tZ  
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Compensator Statistics: ? bg pUv  
Change in back focus: 0A4
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Minimum            :        -0.000000 * rANf&y  
Maximum            :         0.000000 Sf:lN4  
Mean               :        -0.000000 &t:MWb;  
Standard Deviation :         0.000000 '^Np<  
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Monte Carlo Analysis: XdVC>6  
Number of trials: 20 
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Initial Statistics: Normal Distribution oh~Dbu=%  
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  Trial       Criterion        Change b4PK  
      1     0.42804416    -0.11598818 Gukq}ZQd  
Change in Focus                :      -0.400171 .lS6KBf@  
      2     0.54384387    -0.00018847 z<=t3dj  
Change in Focus                :       1.018470 sB!A:  
      3     0.44510003    -0.09893230 h*%1Jkxu  
Change in Focus                :      -0.601922 '|r!yAO6  
      4     0.18154684    -0.36248550 |@|D''u>6  
Change in Focus                :       0.920681 7w({ GZ  
      5     0.28665820    -0.25737414 `-2`UGB-  
Change in Focus                :       1.253875 f& *E;l0  
      6     0.21263372    -0.33139862 /n=/WGl  
Change in Focus                :      -0.903878 dGN*K}5  
      7     0.40051424    -0.14351809 b,`N;*  
Change in Focus                :      -1.354815 Y?x3JU0_  
      8     0.48754161    -0.05649072 JH9CN  
Change in Focus                :       0.215922
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      9     0.40357468    -0.14045766 wEyh;ID3#  
Change in Focus                :       0.281783 Rk^&ras_  
     10     0.26315315    -0.28087919 <#i'3TUR  
Change in Focus                :      -1.048393 I115Rp0  
     11     0.26120585    -0.28282649 yR-.OF,c  
Change in Focus                :       1.017611 7="V7  
     12     0.24033815    -0.30369419 EY(4<;)  
Change in Focus                :      -0.109292 14O/R3+  
     13     0.37164046    -0.17239188 u)ItML  
Change in Focus                :      -0.692430 O,PHAwVG%L  
     14     0.48597489    -0.05805744 ?e*vvu33!  
Change in Focus                :      -0.662040 q_)DY f7V}  
     15     0.21462327    -0.32940907 H>?@nYP  
Change in Focus                :       1.611296 >"b"
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     16     0.43378226    -0.11025008 $onliW|  
Change in Focus                :      -0.640081 e5Z\v0  
     17     0.39321881    -0.15081353 l\)Q3.w  
Change in Focus                :       0.914906 '=5N?)  
     18     0.20692530    -0.33710703 W\/0&H\i  
Change in Focus                :       0.801607 )yJjJ:re  
     19     0.51374068    -0.03029165 ]d0Dd")n  
Change in Focus                :       0.947293 &yuerNK  
     20     0.38013374    -0.16389860 Wp ]u0w  
Change in Focus                :       0.667010 G.;<?W  
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Number of traceable Monte Carlo files generated: 20 fw5AZvE6$  
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Nominal     0.54403234 3N-(`[m{E  
Best        0.54384387    Trial     2 ZD*>i=S  
Worst       0.18154684    Trial     4 wI:oe`?H  
Mean        0.35770970 1FuChd  
Std Dev     0.11156454 8164SWB  
m{X;|-DK[  
5<61NnZ  
Compensator Statistics: ZyTah\yPM  
Change in back focus: CZ@M~Si_  
Minimum            :        -1.354815 &]5<^?3  
Maximum            :         1.611296 *op7:o_  
Mean               :         0.161872 ]uP{Sj  
Standard Deviation :         0.869664 /g21.*Z  
lB,MVsn18  
90% >       0.20977951               YO=;)RA  
80% >       0.22748071               <ioX|.7ZX  
50% >       0.38667627               $.`(2  
20% >       0.46553746               ]O 2_&cs  
10% >       0.50064115                SN11J+  
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End of Run. 3p7*UVR"  
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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 ! $n^Ze2 !  

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 &98qA
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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                 IgZX,4i=o  
80% >       0.22748071                 L[<MBgFKv  
50% >       0.38667627                 ?DM-C5$  
20% >       0.46553746                 v^JyVf>  
10% >       0.50064115 nbhx2@Teqe  
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最后这个数值是MTF值呢，还是MTF的公差？ S =eP/  
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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？？？    Ws}u4t  
P6;L\9=H<  
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  : }2|>Y[v2j  
90% >       0.20977951                 !dv  
80% >       0.22748071                 3;u*_ ]N_  
50% >       0.38667627                 > 't=r  
20% >       0.46553746                 2n2{Oy>L  
10% >       0.50064115 $,bLK|<hi  
....... Bq#?g@V  

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这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   aL$m  
Mode                : Sensitivities v|C)Q %v  
Sampling            : 2 (.-3q;)6  
Nominal Criterion   : 0.54403234 2s_shY<=}L  
Test Wavelength     : 0.6328 TK<~(Dk  
3 [: x#r  
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？ A rC4pT  
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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