[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 4/YE
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然后添加了默认公差分析，基本没变 ^Q!qJav  
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然后运行分析的结果如下： !z@QoD  
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Analysis of Tolerances ga0>J_  
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File : E:\光学设计资料\zemax练习\f500.ZMX KV1zx(WI  
Title: ]D|sQPi]F  
Date : TUE JUN 21 2011 1(!w xJ  
tI50z khaB  
Units are Millimeters. 1Xy{&Ut\  
All changes are computed using linear differences. &_X6m0z  
,VZ;=  
Paraxial Focus compensation only. Z}bUvr XP  
s+Qm/ h2  
WARNING: Solves should be removed prior to tolerancing. {SH+lX0]{  
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Mnemonics: p x;X}Cd  
TFRN: Tolerance on curvature in fringes. Oi{X \Y  
TTHI: Tolerance on thickness. L \0nO i  
TSDX: Tolerance on surface decentering in x. =L_L/"*rel  
TSDY: Tolerance on surface decentering in y. zt/p'khP3  
TSTX: Tolerance on surface tilt in x (degrees). \(UEjlo  
TSTY: Tolerance on surface tilt in y (degrees). ?DP]#9/4  
TIRR: Tolerance on irregularity (fringes). b_88
o-*/  
TIND: Tolerance on Nd index of refraction. ow:}NI  
TEDX: Tolerance on element decentering in x. I"awvUP]a[  
TEDY: Tolerance on element decentering in y. 6itp Mck  
TETX: Tolerance on element tilt in x (degrees). S0.  
TETY: Tolerance on element tilt in y (degrees). u@d`$]/>F  
$Yfm>4  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. q^}QwJw  
/BC(O[P  
WARNING: Boundary constraints on compensators will be ignored. [ bv>(a_,  
.<JD'%?"  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm e6s-;
 
Mode                : Sensitivities $LUNA.  
Sampling            : 2 v8! 1"FYL  
Nominal Criterion   : 0.54403234 FG8genCH@  
Test Wavelength     : 0.6328 0E
q.l<  
iN%\wkx*N  
<qH>[
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Fields: XY Symmetric Angle in degrees u?[P@_i<  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 2%g)0[1  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 k1y&'3%  
[.tqgU  
Sensitivity Analysis: Zcd!y9]#  
(n7v $A  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| GCul6,w  
Type                      Value      Criterion        Change          Value      Criterion        Change O?Xg%k#  
Fringe tolerance on surface 1 L+Q"z*W  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 jYKs| J)[  
Change in Focus                :      -0.000000                            0.000000 +) 2c\1  
Fringe tolerance on surface 2 ;;BQuG  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 q[]EVs0$ew  
Change in Focus                :       0.000000                            0.000000 b\~rL,7(  
Fringe tolerance on surface 3 mMO:m8W  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 rly3f  
Change in Focus                :      -0.000000                            0.000000 hnS ~r4  
Thickness tolerance on surface 1 *g&[?y`UC  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ~V3pj('/)'  
Change in Focus                :       0.000000                            0.000000 pLMki=.Ld  
Thickness tolerance on surface 2 &,Dh*)k  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 M`HXUA4  
Change in Focus                :       0.000000                           -0.000000 'LIJpk3J  
Decenter X tolerance on surfaces 1 through 3 j<!rc>)2+L  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 s9) @$3\  
Change in Focus                :       0.000000                            0.000000 FCQIfJ#  
Decenter Y tolerance on surfaces 1 through 3 En3Q%  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 7dI+aJ  
Change in Focus                :       0.000000                            0.000000 X tZ0z?  
Tilt X tolerance on surfaces 1 through 3 (degrees) Bn*D<<{T  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 S:{hgi,T*  
Change in Focus                :       0.000000                            0.000000 # 4`*`)%  
Tilt Y tolerance on surfaces 1 through 3 (degrees) c:"*MM RC  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 lwPK^)|}  
Change in Focus                :       0.000000                            0.000000 7)G- EAF  
Decenter X tolerance on surface 1 1g{`1[.QO  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 n5"rSgUtE  
Change in Focus                :       0.000000                            0.000000 k7)H%31;  
Decenter Y tolerance on surface 1 E,E:WuB  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Zeyhr\T  
Change in Focus                :       0.000000                            0.000000 mzTF2K  
Tilt X tolerance on surface (degrees) 1 ftsr-3!Vm  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ":?>6'*1  
Change in Focus                :       0.000000                            0.000000 DIodQkF  
Tilt Y tolerance on surface (degrees) 1 <9eQ  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 3nf+imAF  
Change in Focus                :       0.000000                            0.000000 Lhu2;F\/  
Decenter X tolerance on surface 2 ORlz1&hW  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^Qz8`1`;Z  
Change in Focus                :       0.000000                            0.000000 'R8VCj  
Decenter Y tolerance on surface 2 F6Zl#eL  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 :6PWU$z$7  
Change in Focus                :       0.000000                            0.000000 g"]%5Ow1  
Tilt X tolerance on surface (degrees) 2 z.oDH<1
 
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 )zI<C=])"  
Change in Focus                :       0.000000                            0.000000 IJO`"da  
Tilt Y tolerance on surface (degrees) 2 j#y_#  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ' ^gF  
Change in Focus                :       0.000000                            0.000000 ~\DC )  
Decenter X tolerance on surface 3 |ap{+ xh  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wA) NB  
Change in Focus                :       0.000000                            0.000000 qO[6?q=c:  
Decenter Y tolerance on surface 3 dz&| 3o  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %k{~Fa  
Change in Focus                :       0.000000                            0.000000 g"
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Tilt X tolerance on surface (degrees) 3 _WtX8  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 DzO0V"+H}k  
Change in Focus                :       0.000000                            0.000000 &M=12>ah]  
Tilt Y tolerance on surface (degrees) 3 o+
`W  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 RfDIwkpp  
Change in Focus                :       0.000000                            0.000000 CjORL'3  
Irregularity of surface 1 in fringes 
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TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 mN@)b+~(S  
Change in Focus                :       0.000000                            0.000000 r vVU5zA4H  
Irregularity of surface 2 in fringes 6 +^V  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 4?g~GI3  
Change in Focus                :       0.000000                            0.000000 o1MI&}r  
Irregularity of surface 3 in fringes :Y(Yk5  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 UtG@0(6C  
Change in Focus                :       0.000000                            0.000000 @)m[:n  
Index tolerance on surface 1 D4G*K*z,w4  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 D}px=?  
Change in Focus                :       0.000000                            0.000000 3=@7:4 A  
Index tolerance on surface 2 D; H</5
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TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Hs~M!eK  
Change in Focus                :       0.000000                           -0.000000 .\X/o!xC  
7<x0LW  
Worst offenders: 4O9HoX#-?  
Type                      Value      Criterion        Change gl:vJD  
TSTY   2            -0.20000000     0.35349910    -0.19053324 @5\OM#WT~&  
TSTY   2             0.20000000     0.35349910    -0.19053324 6Bmv1n[X^h  
TSTX   2            -0.20000000     0.35349910    -0.19053324 \% !]qv  
TSTX   2             0.20000000     0.35349910    -0.19053324 f'TjR#w  
TSTY   1            -0.20000000     0.42678383    -0.11724851 kI]i,v#F  
TSTY   1             0.20000000     0.42678383    -0.11724851 _a8^AG  
TSTX   1            -0.20000000     0.42678383    -0.11724851 IE: x&q`3  
TSTX   1             0.20000000     0.42678383    -0.11724851 X}0NeG^'O  
TSTY   3            -0.20000000     0.42861670    -0.11541563 o DPs xw  
TSTY   3             0.20000000     0.42861670    -0.11541563 =r3Yt9  
Thn-8DT  
Estimated Performance Changes based upon Root-Sum-Square method: xO9,,w47  
Nominal MTF                 :     0.54403234 FT/H~|Z>  
Estimated change            :    -0.36299231 jIv+=b#oT  
Estimated MTF               :     0.18104003 .hn{m9|U  
Q/\ <rG4  
Compensator Statistics: [{6]iJ  
Change in back focus: /],:sS7  
Minimum            :        -0.000000 hz<kR@k}  
Maximum            :         0.000000 I?J$";A  
Mean               :        -0.000000 6=Kl[U0Y  
Standard Deviation :         0.000000 fU!C:  
:m_0WT  
Monte Carlo Analysis: ,[,+ _A  
Number of trials: 20 7.CzS  
)M#~/~^f+  
Initial Statistics: Normal Distribution 
v+znKpE  
k`Ab*M$@Xs  
  Trial       Criterion        Change )K -@{v^|  
      1     0.42804416    -0.11598818 FlOKTY  
Change in Focus                :      -0.400171 )AXTi4MNp  
      2     0.54384387    -0.00018847 /8q7pwV  
Change in Focus                :       1.018470 tNjb{(eO\h  
      3     0.44510003    -0.09893230 0@C`QW%m  
Change in Focus                :      -0.601922 zu(/c  
      4     0.18154684    -0.36248550 Z$X2*k6PK  
Change in Focus                :       0.920681 rVzjLk
N^  
      5     0.28665820    -0.25737414 gmLGK1  
Change in Focus                :       1.253875 L:%ek3SOz  
      6     0.21263372    -0.33139862 _jy*`$"q(  
Change in Focus                :      -0.903878 DC]FY|ff  
      7     0.40051424    -0.14351809 7`6n]4e  
Change in Focus                :      -1.354815 L7G':oA_`p  
      8     0.48754161    -0.05649072 rs~RKTv-  
Change in Focus                :       0.215922 aN).G1  
      9     0.40357468    -0.14045766 h\Op|#gIT  
Change in Focus                :       0.281783 }(Nb]_H  
     10     0.26315315    -0.28087919 ~)tIO<$U  
Change in Focus                :      -1.048393 SgAY/#  
     11     0.26120585    -0.28282649 )6PZ.s/F6p  
Change in Focus                :       1.017611 DvF`KHsy  
     12     0.24033815    -0.30369419 mJc'oG-  
Change in Focus                :      -0.109292 o(]kI?
`  
     13     0.37164046    -0.17239188 (=CV")tF  
Change in Focus                :      -0.692430 $f_;>f2N  
     14     0.48597489    -0.05805744 WfhQi;r  
Change in Focus                :      -0.662040 /_xwHiA  
     15     0.21462327    -0.32940907 {ogGi/8  
Change in Focus                :       1.611296 r|fJ~0z  
     16     0.43378226    -0.11025008 pJ6bX4QnDX  
Change in Focus                :      -0.640081 2!~j(_TA  
     17     0.39321881    -0.15081353 QVL92"  
Change in Focus                :       0.914906 702&E(rx,  
     18     0.20692530    -0.33710703 ul(1)q^  
Change in Focus                :       0.801607 8 fVI33  
     19     0.51374068    -0.03029165 LZ|G"5X[  
Change in Focus                :       0.947293 KAjKv_6=g  
     20     0.38013374    -0.16389860 tU!"CX  
Change in Focus                :       0.667010 @0A0\2  
wS%I.  
Number of traceable Monte Carlo files generated: 20 B:n9*<v(  

jsf=S{^2  
Nominal     0.54403234 <&8cq@<  
Best        0.54384387    Trial     2 @_FL,AC&m  
Worst       0.18154684    Trial     4
A_{QY&%m  
Mean        0.35770970 D(~6h,=m  
Std Dev     0.11156454 /]>&OSV  
r@e_cD] M  
G( nT.\  
Compensator Statistics:
x|U]x  
Change in back focus: n~8-+$6OR  
Minimum            :        -1.354815 \$VtwVQ,b  
Maximum            :         1.611296 {3$ge  
Mean               :         0.161872 d{9rEB?  
Standard Deviation :         0.869664 lR{eO~'~V  
3`n5[RV  
90% >       0.20977951               '@AK0No\W  
80% >       0.22748071               }dAb}0XK.  
50% >       0.38667627               :&2RV_$>=  
20% >       0.46553746               e l'^9K  
10% >       0.50064115                Dd!MG'%hlb  
z/F(z*'v  
End of Run. (vz)GrH>  
[@rZ.Hsl  
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 '|J-8"  
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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 ?.v!RdM+  
$*xnq%A  
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                 z;#}uC  
80% >       0.22748071                 Iy8gQdI  
50% >       0.38667627                 C(?>l.QGw  
20% >       0.46553746                 p|(910OEQ  
10% >       0.50064115 `r_qvrC  
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最后这个数值是MTF值呢，还是MTF的公差？ !ye%A&  
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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？？？   P:(,l,}F8  
/y@$|DI1  
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  : )"t=sFxaB  
90% >       0.20977951                 wC@4`h\U  
80% >       0.22748071                 c{|soc[#  
50% >       0.38667627                 ^L]+e  
20% >       0.46553746                 F~W*"i+EZ  
10% >       0.50064115 a(d'iAU8^  
....... H'?Bx>X  

Sh2q#7hf  
fJc,KZy  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   7 &GhJ^Ku  
Mode                : Sensitivities 6$fC R  
Sampling            : 2 ` mALx! `  
Nominal Criterion   : 0.54403234 +vDT^|2SF  
Test Wavelength     : 0.6328 #\%GrtM  
FE/&<g0,:  
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？ .N/4+[2p(  
5jx{O${u  
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