[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 +~Ay h[V  
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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 bV*zMoD#  
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图片:2.jpg

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然后运行分析的结果如下： F^t?*   
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Analysis of Tolerances rDX'oP:  
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File : E:\光学设计资料\zemax练习\f500.ZMX  'Q>z**  
Title: Jx$#GUl#j  
Date : TUE JUN 21 2011 P`dHR;Y0  
Df~p'N-$  
Units are Millimeters. 1`]IU_)1B  
All changes are computed using linear differences. pptM&Y  
|zq!CLjD@  
Paraxial Focus compensation only. a
sN }  
a@y5JxFAy  
WARNING: Solves should be removed prior to tolerancing. YOV4)P"  
C'czXZtn  
Mnemonics: =l4\4td9p  
TFRN: Tolerance on curvature in fringes. ioNa~F&  
TTHI: Tolerance on thickness. Jrd4a~XP  
TSDX: Tolerance on surface decentering in x. `m3QT3B  
TSDY: Tolerance on surface decentering in y. ),Ho(%T\  
TSTX: Tolerance on surface tilt in x (degrees). Tj21YK.mk  
TSTY: Tolerance on surface tilt in y (degrees). 3
U"')  
TIRR: Tolerance on irregularity (fringes). JkDPuTXD  
TIND: Tolerance on Nd index of refraction. #C1A5JE&  
TEDX: Tolerance on element decentering in x. /;NE]{K  
TEDY: Tolerance on element decentering in y. 3zTE4pHzu+  
TETX: Tolerance on element tilt in x (degrees). Yuo1'gE+  
TETY: Tolerance on element tilt in y (degrees). `X<`j6zaG  
=Xy`"i{`(  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. [TK? P0  
bV$8 >[`  
WARNING: Boundary constraints on compensators will be ignored. rW~?0  
c Z6p^  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Sm$j:xw<  
Mode                : Sensitivities 3P#+) F~  
Sampling            : 2 0L0Jc,(F+  
Nominal Criterion   : 0.54403234 dxn0HXU  
Test Wavelength     : 0.6328 r*N~. tFo  
=Esbeb7P  
PM-PP8h  
Fields: XY Symmetric Angle in degrees XK%W^a*x
 
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY WiNr866nB  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 2rO)qjiH  
7mn,{2  
Sensitivity Analysis: 6I&j cHH  
r'd:SaU+  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Q&upxE4-~  
Type                      Value      Criterion        Change          Value      Criterion        Change R] Disljq  
Fringe tolerance on surface 1 7.$
]f71z  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 w`j*W$82
  
Change in Focus                :      -0.000000                            0.000000 *"ykTqa  
Fringe tolerance on surface 2 'Gl;Ir^  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 3|~(?4aE  
Change in Focus                :       0.000000                            0.000000 Bn1L?>G  
Fringe tolerance on surface 3 b~/Wnp5  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 u%=bHg  
Change in Focus                :      -0.000000                            0.000000 oE!hF}O  
Thickness tolerance on surface 1 ]HyHz9QkL  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 @TA8^ND  
Change in Focus                :       0.000000                            0.000000 BZJKiiD  
Thickness tolerance on surface 2 #u8*CA9  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ,Um5S6 Z  
Change in Focus                :       0.000000                           -0.000000 T/wM(pr'   
Decenter X tolerance on surfaces 1 through 3 v~V;+S=gz  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Gg}5$||^C  
Change in Focus                :       0.000000                            0.000000 NokXE  
Decenter Y tolerance on surfaces 1 through 3 (Bt;DM#>  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 QT1:>k  
Change in Focus                :       0.000000                            0.000000 { r6]MS#l1  
Tilt X tolerance on surfaces 1 through 3 (degrees) gH{:`E k7  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [|a( y6Q  
Change in Focus                :       0.000000                            0.000000 *MYt:ms  
Tilt Y tolerance on surfaces 1 through 3 (degrees) y _'eyR@)  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 G-\<5]k]  
Change in Focus                :       0.000000                            0.000000 <`c25ih.4  
Decenter X tolerance on surface 1 YKP=0 j3,  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 S}.\v<  
Change in Focus                :       0.000000                            0.000000 tLS<0  
Decenter Y tolerance on surface 1 {A]k%74-a  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 M5']sdR(l  
Change in Focus                :       0.000000                            0.000000 e1%rVQ(v  
Tilt X tolerance on surface (degrees) 1 ^273l(CZ1  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 t/JOERw  
Change in Focus                :       0.000000                            0.000000 n 5~=qQK2  
Tilt Y tolerance on surface (degrees) 1 j:HH#U  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9U2Px$E  
Change in Focus                :       0.000000                            0.000000 CV!;oB&  
Decenter X tolerance on surface 2 x1Nme%%&  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 *he7BUO  
Change in Focus                :       0.000000                            0.000000 EkRdpiLB  
Decenter Y tolerance on surface 2 #"Fg%36Zd  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Hs[}l_gYn  
Change in Focus                :       0.000000                            0.000000 lir&e 9I+  
Tilt X tolerance on surface (degrees) 2 x8 f6,  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 =LXvlt'Q34  
Change in Focus                :       0.000000                            0.000000 cJP'ShnCh  
Tilt Y tolerance on surface (degrees) 2 0SJ{@*  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 _/|8%])  
Change in Focus                :       0.000000                            0.000000 ':,>eL#+uV  
Decenter X tolerance on surface 3 \HCOR, `T  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 'Z\{D*=V8  
Change in Focus                :       0.000000                            0.000000 *Jb_=
j*)  
Decenter Y tolerance on surface 3 so}l#  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 LkaG8#m1R  
Change in Focus                :       0.000000                            0.000000 M'^(3#ZU  
Tilt X tolerance on surface (degrees) 3 mYjf5  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jo_o`j  
Change in Focus                :       0.000000                            0.000000 |xq}'.C  
Tilt Y tolerance on surface (degrees) 3 Jf
_]Z  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 q z=yMIy=  
Change in Focus                :       0.000000                            0.000000 ha_@Yqgh  
Irregularity of surface 1 in fringes Qn*6D  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 j,}4TDWa  
Change in Focus                :       0.000000                            0.000000 4w@v#H@  
Irregularity of surface 2 in fringes ?Rlgv5P!  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 }g}6qCv7  
Change in Focus                :       0.000000                            0.000000 Am#m>^!qb  
Irregularity of surface 3 in fringes 9#u}^t  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 -dg}BM  
Change in Focus                :       0.000000                            0.000000 GUKDhg,W  
Index tolerance on surface 1 SLSF
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TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 5QR}IxQ  
Change in Focus                :       0.000000                            0.000000 ?4:rP@  
Index tolerance on surface 2 [d0%.+U  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 gyC^K3}  
Change in Focus                :       0.000000                           -0.000000 Cq gJ  
?3[tJreVj  
Worst offenders: VR"8Di&)  
Type                      Value      Criterion        Change QS\Uq(Ja\  
TSTY   2            -0.20000000     0.35349910    -0.19053324 o1U}/y+R\  
TSTY   2             0.20000000     0.35349910    -0.19053324 .Nc_n5D
6  
TSTX   2            -0.20000000     0.35349910    -0.19053324 s){Q&E~X  
TSTX   2             0.20000000     0.35349910    -0.19053324 0X.TF  
TSTY   1            -0.20000000     0.42678383    -0.11724851 n9DbiL1{  
TSTY   1             0.20000000     0.42678383    -0.11724851 @Eo4U]-  
TSTX   1            -0.20000000     0.42678383    -0.11724851 3a%xn4P  
TSTX   1             0.20000000     0.42678383    -0.11724851 [qiOd!  
TSTY   3            -0.20000000     0.42861670    -0.11541563 .M8=^,h^K  
TSTY   3             0.20000000     0.42861670    -0.11541563 Q2q|*EL  
?C}sR:K/  
Estimated Performance Changes based upon Root-Sum-Square method: k'x#t(  
Nominal MTF                 :     0.54403234 6Hda]y  
Estimated change            :    -0.36299231 :aH%bk  
Estimated MTF               :     0.18104003
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=w6}\ 'X  
Compensator Statistics: q=njKC  
Change in back focus: au}s=ua~i  
Minimum            :        -0.000000 gd K*"U  
Maximum            :         0.000000 Gp,'kw"I  
Mean               :        -0.000000 xLZbU4  
Standard Deviation :         0.000000 U3/8A:$y  
=C#*!N73  
Monte Carlo Analysis: ":V%(c  
Number of trials: 20 X3AwM%,!  
Jns/v6  
Initial Statistics: Normal Distribution n%*tMr9s  
-rO*7HO
 
  Trial       Criterion        Change I :@|^PYw  
      1     0.42804416    -0.11598818 :Z[(A"dA  
Change in Focus                :      -0.400171 $5x]%1R  
      2     0.54384387    -0.00018847 >d97l&W  
Change in Focus                :       1.018470 Uh}+"h5  
      3     0.44510003    -0.09893230 e]+7DE  
Change in Focus                :      -0.601922 0TmZ*?3!4  
      4     0.18154684    -0.36248550 L$SMfx  
Change in Focus                :       0.920681 AxEc^Co
f  
      5     0.28665820    -0.25737414 {
d,?bs)  
Change in Focus                :       1.253875 pUGN!3
 
      6     0.21263372    -0.33139862
" <Qm -  
Change in Focus                :      -0.903878 3 &Sp@,  
      7     0.40051424    -0.14351809 -qfnUh  
Change in Focus                :      -1.354815 Ts#pUoE~+H  
      8     0.48754161    -0.05649072 SetX#e?q~  
Change in Focus                :       0.215922 D&-vq,c  
      9     0.40357468    -0.14045766 Tv1]v.  
Change in Focus                :       0.281783 $C$ub&D ~"  
     10     0.26315315    -0.28087919 R1Yqz $#  
Change in Focus                :      -1.048393 %7 /,m  
     11     0.26120585    -0.28282649 B>,A(X&  
Change in Focus                :       1.017611 q=+wI"[  
     12     0.24033815    -0.30369419 jI A#!4  
Change in Focus                :      -0.109292 2 ZK%)vq0  
     13     0.37164046    -0.17239188 Mb1wYh  
Change in Focus                :      -0.692430 G%$}WA]|  
     14     0.48597489    -0.05805744 4dD2{M  
Change in Focus                :      -0.662040 &y\igX1  
     15     0.21462327    -0.32940907 >e/ r2U  
Change in Focus                :       1.611296 KJX>DL 9\  
     16     0.43378226    -0.11025008 K'V 2FTJI  
Change in Focus                :      -0.640081 3 1k
 
     17     0.39321881    -0.15081353 D?mDG|Z  
Change in Focus                :       0.914906 onib x^Fcd  
     18     0.20692530    -0.33710703 DL1 +c`d  
Change in Focus                :       0.801607 ` .$&T7  
     19     0.51374068    -0.03029165 Cx,-_  
Change in Focus                :       0.947293 sjn:O'  
     20     0.38013374    -0.16389860 >8(jW  
Change in Focus                :       0.667010 WGPD8.  
LZa% x  
Number of traceable Monte Carlo files generated: 20 H#`8Ey  
J 3B`Krh  
Nominal     0.54403234 fdLBhe#9M  
Best        0.54384387    Trial     2 pZjpc#*9N  
Worst       0.18154684    Trial     4 1
fRP1  
Mean        0.35770970 ]VDn'@uM  
Std Dev     0.11156454 ntZ~m  
&r:=KT3  
%{"dP%|w4}  
Compensator Statistics: ?<6@^X"  
Change in back focus: GMw)*  
Minimum            :        -1.354815 ^7^2D2[  
Maximum            :         1.611296 qlvwK&W<QM  
Mean               :         0.161872
.`+yo0O:  
Standard Deviation :         0.869664 @k9Pz<ub  
WL:0R>0  
90% >       0.20977951               _ Mn6L=  
80% >       0.22748071               1]Lh'.1^  
50% >       0.38667627              
-;/ Y  
20% >       0.46553746               V:>`*tlh  
10% >       0.50064115                f"P$f8$  
"k, K~@}  
End of Run. #N9d$[R*  
6n,xH!7  
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 yV2e5/i  

图片:3.JPG

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t}~UYG(h~  
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 ]x_F{&6U8  
O2lIlCL  
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                 fp tIc#4  
80% >       0.22748071                 =hhvmo  
50% >       0.38667627                 ~QCA -Yud  
20% >       0.46553746                 xU:4Y0y8  
10% >       0.50064115 wE4;Rk1  
<p/MyqZf  
最后这个数值是MTF值呢，还是MTF的公差？ +(y>qd  
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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？？？   #h{Nz/h+  
xG w?'\  
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  : "(N-h\7Ex9  
90% >       0.20977951                 i6FP[6H1  
80% >       0.22748071                 v >NTh  
50% >       0.38667627                 IQ#So]9~Y  
20% >       0.46553746                 sv@}x[L  
10% >       0.50064115 pIL`WE1'  
....... Wz5d|b  

]Px:d+wX:  
x7Eeb!s0f,  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   e_\SSH@tw  
Mode                : Sensitivities dnk1Mu<  
Sampling            : 2 
2~+'vi  
Nominal Criterion   : 0.54403234  PVS\,  
Test Wavelength     : 0.6328 Og
n,1nm%  
O'Vh{JHf  
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？ *vEU}SxRuv  
9(V=Ubj  
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