[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 2Hj]QN7"   
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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 ~C3-E %h@Z  
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图片:2.jpg

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然后运行分析的结果如下： IFe[3mB5  
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Analysis of Tolerances *{Vyt5  
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File : E:\光学设计资料\zemax练习\f500.ZMX mqpZby  
Title: EhoR.  
Date : TUE JUN 21 2011 f}A
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bK7DGw`1  
Units are Millimeters. 420K fVA  
All changes are computed using linear differences. 5sRNqTIr  
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Paraxial Focus compensation only. `Jo}/c5R  
-!"8j"pA:  
WARNING: Solves should be removed prior to tolerancing. 9i@*\Ada  
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Mnemonics: L'(^[vR(  
TFRN: Tolerance on curvature in fringes. Oi RqqD  
TTHI: Tolerance on thickness. G1BVI:A&S  
TSDX: Tolerance on surface decentering in x. ]T1"3 [si  
TSDY: Tolerance on surface decentering in y. _eS*e-@O5  
TSTX: Tolerance on surface tilt in x (degrees). *niQ*A  
TSTY: Tolerance on surface tilt in y (degrees). l"64w>,  
TIRR: Tolerance on irregularity (fringes). 2]l*{l^ Bl  
TIND: Tolerance on Nd index of refraction. @%K 8oYK  
TEDX: Tolerance on element decentering in x. Aka`L
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TEDY: Tolerance on element decentering in y. -M:.D3,L  
TETX: Tolerance on element tilt in x (degrees). BC^WPr  
TETY: Tolerance on element tilt in y (degrees). 1Pbp=R/7ar  
?hO*~w;UU|  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 6_7d1.wv9  
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WARNING: Boundary constraints on compensators will be ignored. 1*5n}cU~  
x:(e:I8x(  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm DN+iS  
Mode                : Sensitivities &,+ZNA`P  
Sampling            : 2 "o`( k
YSF  
Nominal Criterion   : 0.54403234 ,b/0_Q  
Test Wavelength     : 0.6328 6%? NNEM  
B}p/
,4x6  
wI:oe`?H  
Fields: XY Symmetric Angle in degrees ie)Qsw@  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY H74hv`G9  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 MFVFr "  
{.ph)8  
Sensitivity Analysis: /dO&r'!:  
XHV+Y+VG  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ,v
/C-b)I  
Type                      Value      Criterion        Change          Value      Criterion        Change @Q'5/q+  
Fringe tolerance on surface 1 3|C"F-'<  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 IQ\`n|  
Change in Focus                :      -0.000000                            0.000000 >DDQ7 l  
Fringe tolerance on surface 2 j \SDw  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 HwOw.K<  
Change in Focus                :       0.000000                            0.000000 `g#\ Ws  
Fringe tolerance on surface 3 N24+P5  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 i''dY!2  
Change in Focus                :      -0.000000                            0.000000 4h|D[Cb]  
Thickness tolerance on surface 1 hPl;2r  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 bF3j*bpO"  
Change in Focus                :       0.000000                            0.000000 tW(E\#!|p<  
Thickness tolerance on surface 2 i"r=b%;;  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 KxvT}"k  
Change in Focus                :       0.000000                           -0.000000 >k
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Decenter X tolerance on surfaces 1 through 3 q,2 @X~T  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Cnc77EUD  
Change in Focus                :       0.000000                            0.000000 ivt\| >  
Decenter Y tolerance on surfaces 1 through 3 2)G ZU  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 371E S4  
Change in Focus                :       0.000000                            0.000000
a-7nA  
Tilt X tolerance on surfaces 1 through 3 (degrees) ;$Wa=wHb  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 s4w<X}O_  
Change in Focus                :       0.000000                            0.000000 pt=[XhxC(>  
Tilt Y tolerance on surfaces 1 through 3 (degrees) NKd):>d%  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 RgEUTpX  
Change in Focus                :       0.000000                            0.000000 uH`ds+Hp  
Decenter X tolerance on surface 1
kG%<5QH  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 m0:8thZN  
Change in Focus                :       0.000000                            0.000000 }L@YLnc%  
Decenter Y tolerance on surface 1 bju0l[;=  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]RxNSr0e  
Change in Focus                :       0.000000                            0.000000 ,u$$w  
Tilt X tolerance on surface (degrees) 1 r,F'Jd5  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 l*h6JgU  
Change in Focus                :       0.000000                            0.000000 qoOHWh&  
Tilt Y tolerance on surface (degrees) 1 IUzRE?Kzf
 
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Y~Zg^x2  
Change in Focus                :       0.000000                            0.000000 2t_E\W7w+  
Decenter X tolerance on surface 2 #*w$JH  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 E]Kd`&^}  
Change in Focus                :       0.000000                            0.000000 2-2'c?%  
Decenter Y tolerance on surface 2 X~lOFH;}q  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 u6I# D _  
Change in Focus                :       0.000000                            0.000000 XfB;^y=u8  
Tilt X tolerance on surface (degrees) 2
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TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 .3$iOMCH  
Change in Focus                :       0.000000                            0.000000 S&|$F2M  
Tilt Y tolerance on surface (degrees) 2 #LF_*a0v  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 brZ3T`p+.P  
Change in Focus                :       0.000000                            0.000000 7GKeqv  
Decenter X tolerance on surface 3 Dz.U&+*  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k~Gjfo  
Change in Focus                :       0.000000                            0.000000 gJ2R(YMF
 
Decenter Y tolerance on surface 3 w W-GBY3  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 !5x"d7  
Change in Focus                :       0.000000                            0.000000 eQzTb91  
Tilt X tolerance on surface (degrees) 3 ZSxKk6n}J  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 IhUuL0  
Change in Focus                :       0.000000                            0.000000 |IZG`
3  
Tilt Y tolerance on surface (degrees) 3 `lr\V;o!  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 !! #\P7P  
Change in Focus                :       0.000000                            0.000000 aRfkJPPa[  
Irregularity of surface 1 in fringes T-JJc#  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 l~!#<=.  
Change in Focus                :       0.000000                            0.000000 {?,:M  
Irregularity of surface 2 in fringes 60-LpGhvy  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 V5R``Tp  
Change in Focus                :       0.000000                            0.000000 D,]m7yFT  
Irregularity of surface 3 in fringes owQLAV  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ?zxKk(J  
Change in Focus                :       0.000000                            0.000000 IiSO{  
Index tolerance on surface 1 g`\Vy4w  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578  RtK/bUa  
Change in Focus                :       0.000000                            0.000000 ZO:{9vt=/  
Index tolerance on surface 2 T7&itgEYG/  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 U.d*E/OR5  
Change in Focus                :       0.000000                           -0.000000 R0{+Xd  
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Worst offenders: DtyT8kr  
Type                      Value      Criterion        Change Xo}w$q5  
TSTY   2            -0.20000000     0.35349910    -0.19053324 CEt_wKzf  
TSTY   2             0.20000000     0.35349910    -0.19053324 HH8a"Hq)  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ePB=aCZ  
TSTX   2             0.20000000     0.35349910    -0.19053324 e(j"u;=  
TSTY   1            -0.20000000     0.42678383    -0.11724851 lYU_uFOs\  
TSTY   1             0.20000000     0.42678383    -0.11724851 2x'JR yef  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ptYQP^6S[  
TSTX   1             0.20000000     0.42678383    -0.11724851 7J##IH+z35  
TSTY   3            -0.20000000     0.42861670    -0.11541563 luAhyEp  
TSTY   3             0.20000000     0.42861670    -0.11541563 K@%.T#  
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Estimated Performance Changes based upon Root-Sum-Square method: [K%Jt  
Nominal MTF                 :     0.54403234 o{m$b2BW  
Estimated change            :    -0.36299231 X2Y-TET  
Estimated MTF               :     0.18104003 N(/DC)DJg  
SC"=M^E  
Compensator Statistics: \Ui8Sgeei  
Change in back focus: ZJ u\  
Minimum            :        -0.000000 8%I4jL<  
Maximum            :         0.000000 r's4-\  
Mean               :        -0.000000 $:F]O$A  
Standard Deviation :         0.000000 T3Qa[>+\  
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Monte Carlo Analysis: ytr~} M%  
Number of trials: 20
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MhHygZT[}  
Initial Statistics: Normal Distribution ]`]m41+w  
X2T)]`@  
  Trial       Criterion        Change ppfBfMX  
      1     0.42804416    -0.11598818 =@&]PYv  
Change in Focus                :      -0.400171 3>/Yku)t  
      2     0.54384387    -0.00018847 (N0G[(>  
Change in Focus                :       1.018470 pOpie5)7X  
      3     0.44510003    -0.09893230 y~Sh|2x8v  
Change in Focus                :      -0.601922 $nBzYRc"3  
      4     0.18154684    -0.36248550 {>>f5o3  
Change in Focus                :       0.920681 XEY((
VL0  
      5     0.28665820    -0.25737414 u%3Z +[  
Change in Focus                :       1.253875 :W8DgL>l  
      6     0.21263372    -0.33139862 OV Iu&6#  
Change in Focus                :      -0.903878 OT\[qaK  
      7     0.40051424    -0.14351809 -E?h^J&U  
Change in Focus                :      -1.354815 Z#nj[r!l}  
      8     0.48754161    -0.05649072 [uW{Ap~2  
Change in Focus                :       0.215922 hyVuZ\9B  
      9     0.40357468    -0.14045766 )$i7b  
Change in Focus                :       0.281783 i{ eDV  
     10     0.26315315    -0.28087919 mvlK~c8  
Change in Focus                :      -1.048393 q?e97a  
     11     0.26120585    -0.28282649 9^3y\@ m  
Change in Focus                :       1.017611 qbFzA i  
     12     0.24033815    -0.30369419 6*{N{]`WZ)  
Change in Focus                :      -0.109292 rW
&8#&  
     13     0.37164046    -0.17239188 bxK1v7  
Change in Focus                :      -0.692430 +^{yJp.H#  
     14     0.48597489    -0.05805744 n\ZDI+X  
Change in Focus                :      -0.662040 /@Y/(+DE  
     15     0.21462327    -0.32940907 ] +LleS5  
Change in Focus                :       1.611296 a&M{y  
     16     0.43378226    -0.11025008 }|(KI  
Change in Focus                :      -0.640081 a$l/N{<.  
     17     0.39321881    -0.15081353 t/#[At5p=  
Change in Focus                :       0.914906 C$b$)uI;  
     18     0.20692530    -0.33710703 xW#r)aN]p  
Change in Focus                :       0.801607 ccZ A  
     19     0.51374068    -0.03029165 -_4U+Cfmtl  
Change in Focus                :       0.947293 {xMY2I++  
     20     0.38013374    -0.16389860 d {T3  
Change in Focus                :       0.667010 k#w[GL|T  
,ZC^,Vq  
Number of traceable Monte Carlo files generated: 20 AFF7fK  
+i!/J  
Nominal     0.54403234 =k2In_  
Best        0.54384387    Trial     2 =ugxPgn  
Worst       0.18154684    Trial     4 /~K-0K#w  
Mean        0.35770970 k]] (I<2  
Std Dev     0.11156454 '/Hx0]V  
+Y0Wiwr'  
;SEH|_/  
Compensator Statistics: kViX FPW  
Change in back focus: %mAgE\y25  
Minimum            :        -1.354815
2$jTj<.K  
Maximum            :         1.611296 e3yBB*@  
Mean               :         0.161872 eZ(<hE>  
Standard Deviation :         0.869664 ? !MDg_oHd  
EdhT;!  
90% >       0.20977951               2fu|X#R  
80% >       0.22748071               7^A;.x  
50% >       0.38667627               wyMj^+ 2m  
20% >       0.46553746               [ft#zxCJ  
10% >       0.50064115                x24  
l23_K7  
End of Run. +FP*RNM  
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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 L6fc_Mo.EE  

图片:3.JPG

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35%'HFt_  
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  !NUsfd  
;X[mfg\  
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                 |kyxa2F{  
80% >       0.22748071                
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50% >       0.38667627                 U$@p"F@P  
20% >       0.46553746                 3P-qLbJ  
10% >       0.50064115 !2s< v
 
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最后这个数值是MTF值呢，还是MTF的公差？ J?&lpsB3_l  
Y0:y72mK  
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？？？   4h\MSTF*  
oqH811  
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  : P6V_cw$  
90% >       0.20977951                 t:NTk(  
80% >       0.22748071                 D{g6M>,\  
50% >       0.38667627                 ,{P*ZK3u  
20% >       0.46553746                 4UD<g+|  
10% >       0.50064115 7WK^eW"y8  
....... WtOpxAq  

]7" W(  
l]D?S]{a  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   u:#+R_0#97  
Mode                : Sensitivities "`]G>,r_  
Sampling            : 2 P(pw$ q$S  
Nominal Criterion   : 0.54403234 H0<(j(JK  
Test Wavelength     : 0.6328 5ZeE& vG2  
NFq&a i  
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？ '.Iz*%"  
tPu0r],`o  
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