[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 Cj=_WWo  
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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 /Ny#+$cfk  
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图片:2.jpg

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然后运行分析的结果如下： R?y_tho4A  
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Analysis of Tolerances 7'gk=MQc  
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File : E:\光学设计资料\zemax练习\f500.ZMX w}s5=>QG%  
Title: e jR_3K^  
Date : TUE JUN 21 2011 q8uq%wf  
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Units are Millimeters. l;$FR4}d  
All changes are computed using linear differences. F&lH5  
1!yd(p=cL  
Paraxial Focus compensation only. Z;[xaP\S  
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WARNING: Solves should be removed prior to tolerancing. KEdqA/F>  
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Mnemonics: *^RoI  
TFRN: Tolerance on curvature in fringes. =A
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TTHI: Tolerance on thickness. B%`|W@v  
TSDX: Tolerance on surface decentering in x. ]+b?J0|P<  
TSDY: Tolerance on surface decentering in y. ?B@3A)
a  
TSTX: Tolerance on surface tilt in x (degrees). pNZ3vTs6  
TSTY: Tolerance on surface tilt in y (degrees). !/ dH"h  
TIRR: Tolerance on irregularity (fringes). H0jbG;  
TIND: Tolerance on Nd index of refraction. Sy]W4%  
TEDX: Tolerance on element decentering in x. "a(e2H2&T4  
TEDY: Tolerance on element decentering in y. }{kn/m/  
TETX: Tolerance on element tilt in x (degrees). FS!9 j8  
TETY: Tolerance on element tilt in y (degrees). &g>MZ"Z|  
';}:*nZ//_  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. @$Yk#N;&(  
9Zf  
WARNING: Boundary constraints on compensators will be ignored. @4KKm@(p85  
Dm$SW<!l|  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm auqN8_+=  
Mode                : Sensitivities `gF`Sgz  
Sampling            : 2 66sgs16k  
Nominal Criterion   : 0.54403234 rCsC}2O  
Test Wavelength     : 0.6328 6G#[Mc yn  
/Dyig  
epG]$T![  
Fields: XY Symmetric Angle in degrees BG)zkn$  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 2Nx:Y+[  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 -m[ tYp,q  
kw} E0uY  
Sensitivity Analysis: G(wstHT;/  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| T!Tp:&O-  
Type                      Value      Criterion        Change          Value      Criterion        Change 9Y2.ob!$}  
Fringe tolerance on surface 1 J`C 2}$ ~  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \){_\{&  
Change in Focus                :      -0.000000                            0.000000 9G"4w`P  
Fringe tolerance on surface 2 &x=_n'  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 UtC<TBr  
Change in Focus                :       0.000000                            0.000000 TaaCl#g$?  
Fringe tolerance on surface 3 f="ZplW  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Nq^o8q_  
Change in Focus                :      -0.000000                            0.000000 Bn%?{z)  
Thickness tolerance on surface 1 }}u`*&,g  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 mkPqxzxbrL  
Change in Focus                :       0.000000                            0.000000 st~l||  
Thickness tolerance on surface 2 kGC*\?<LmR  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Z0O0Q=e\Y  
Change in Focus                :       0.000000                           -0.000000 R4'>5.M  
Decenter X tolerance on surfaces 1 through 3 +uj;00 D  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 XiV K4sD8  
Change in Focus                :       0.000000                            0.000000 xls US'Eo  
Decenter Y tolerance on surfaces 1 through 3 LOu9#w"  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 lqgR4
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Change in Focus                :       0.000000                            0.000000 ;8 *"c  
Tilt X tolerance on surfaces 1 through 3 (degrees) Hwtoa,  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 &U CtyCz  
Change in Focus                :       0.000000                            0.000000 {X<_Y<  
Tilt Y tolerance on surfaces 1 through 3 (degrees) XbeT x  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Fp"c {  
Change in Focus                :       0.000000                            0.000000 fZS'e{V  
Decenter X tolerance on surface 1 H;@0L}Nu+}  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 T,Q7 YI  
Change in Focus                :       0.000000                            0.000000 44w "U%+  
Decenter Y tolerance on surface 1 !>wu7u-  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 9eE FX7  
Change in Focus                :       0.000000                            0.000000 ?B)e8i<[f  
Tilt X tolerance on surface (degrees) 1 ~(NFjCUY?  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 AAuwE&Gg  
Change in Focus                :       0.000000                            0.000000 Im};wJ&
 
Tilt Y tolerance on surface (degrees) 1 G(o6/  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 BT^=p  
Change in Focus                :       0.000000                            0.000000 ()$m9%x  
Decenter X tolerance on surface 2 beT[7uVj_  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 V?>&9D"m  
Change in Focus                :       0.000000                            0.000000 Q,tjODc6n  
Decenter Y tolerance on surface 2 <VQ@I  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 !}c\u  
Change in Focus                :       0.000000                            0.000000 ^5>W`vwp  
Tilt X tolerance on surface (degrees) 2 0R0_UvsXU  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 D vN0h(?  
Change in Focus                :       0.000000                            0.000000 Yt_t>  
Tilt Y tolerance on surface (degrees) 2 .b!HEi<F  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 E@l@f
 
Change in Focus                :       0.000000                            0.000000 (9'q/qgTO  
Decenter X tolerance on surface 3 >MhZ(&iD  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %,@e- &>  
Change in Focus                :       0.000000                            0.000000 bP|-GCKM8  
Decenter Y tolerance on surface 3
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TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 gdh|X[d  
Change in Focus                :       0.000000                            0.000000 _j{)%%?r  
Tilt X tolerance on surface (degrees) 3 P!)F1U]!  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 n$>_2v  
Change in Focus                :       0.000000                            0.000000 C.H(aX)7  
Tilt Y tolerance on surface (degrees) 3 }s#4m  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 zxd<C
q>d  
Change in Focus                :       0.000000                            0.000000 -- IewW  
Irregularity of surface 1 in fringes 4{ZVw/VP,-  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 B{S^t\T$  
Change in Focus                :       0.000000                            0.000000 B4c;/W-  
Irregularity of surface 2 in fringes yM(
ezb  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 jH;L7
 
Change in Focus                :       0.000000                            0.000000 ]/%CTD(O  
Irregularity of surface 3 in fringes OU^I/TU  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 An,TunX  
Change in Focus                :       0.000000                            0.000000 DGz}d,ie  
Index tolerance on surface 1 8Bxb~*  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 s%m?Yh3  
Change in Focus                :       0.000000                            0.000000 eSW}H_3  
Index tolerance on surface 2 <K/iX%b?  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 9`@}KnvB?  
Change in Focus                :       0.000000                           -0.000000 "
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Worst offenders: jCg4$),b  
Type                      Value      Criterion        Change 1pN8,[hyR7  
TSTY   2            -0.20000000     0.35349910    -0.19053324 G!Y7RjWD  
TSTY   2             0.20000000     0.35349910    -0.19053324 qV``' _=<  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ?8<R)hJa<  
TSTX   2             0.20000000     0.35349910    -0.19053324 uhwCC  
TSTY   1            -0.20000000     0.42678383    -0.11724851 tqKX\N=5^  
TSTY   1             0.20000000     0.42678383    -0.11724851 g`"_+x'  
TSTX   1            -0.20000000     0.42678383    -0.11724851 bZ+Hu~  
TSTX   1             0.20000000     0.42678383    -0.11724851 em ]0^otM  
TSTY   3            -0.20000000     0.42861670    -0.11541563 uw`J5TND  
TSTY   3             0.20000000     0.42861670    -0.11541563  %Rm
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Estimated Performance Changes based upon Root-Sum-Square method: <){J|O  
Nominal MTF                 :     0.54403234 KJV],6d  
Estimated change            :    -0.36299231 E-?JHJloU  
Estimated MTF               :     0.18104003 _Pl5?5eZj  
gA2]kZg  
Compensator Statistics: {Z~ze`N/  
Change in back focus: <bywi2]z  
Minimum            :        -0.000000 &iJvkt  
Maximum            :         0.000000 e\*N Lj_(  
Mean               :        -0.000000 P Qi=  
Standard Deviation :         0.000000 i[vOpg]J  
TLz>|gr  
Monte Carlo Analysis: <sjz_::V8R  
Number of trials: 20 
;4`%?6%  
2rS`ViicD  
Initial Statistics: Normal Distribution 7q#R,\  
dQNW1-s  
  Trial       Criterion        Change 0j' Xi_uM  
      1     0.42804416    -0.11598818 gy5R"_MU  
Change in Focus                :      -0.400171 njb{
  
      2     0.54384387    -0.00018847 M-C>I;a  
Change in Focus                :       1.018470 -{$L`{|G  
      3     0.44510003    -0.09893230 dp'k$el  
Change in Focus                :      -0.601922 ^F|/\i  
      4     0.18154684    -0.36248550 ;!H]&2`'(  
Change in Focus                :       0.920681 _Oc\hW  
      5     0.28665820    -0.25737414 e:|Bn>*  
Change in Focus                :       1.253875 >WY\P4)k  
      6     0.21263372    -0.33139862 (;++a9GK  
Change in Focus                :      -0.903878 fZxEE~Q1  
      7     0.40051424    -0.14351809 v)v`896S`  
Change in Focus                :      -1.354815 l9{.~]V  
      8     0.48754161    -0.05649072 $#J  
Change in Focus                :       0.215922 }#`-mRaU  
      9     0.40357468    -0.14045766 6>Is-/hsy  
Change in Focus                :       0.281783 kfkcaj4l]  
     10     0.26315315    -0.28087919 p8E6_%Rw  
Change in Focus                :      -1.048393 Sfffm$H  
     11     0.26120585    -0.28282649 "J%dI9tM{  
Change in Focus                :       1.017611 [4\n(/  
     12     0.24033815    -0.30369419 )"Dl,Fig:/  
Change in Focus                :      -0.109292 V<t!gT#&o!  
     13     0.37164046    -0.17239188 a,?u 2  
Change in Focus                :      -0.692430 #]s&[O43  
     14     0.48597489    -0.05805744 #AH<dS  
Change in Focus                :      -0.662040 ,4S6F HK  
     15     0.21462327    -0.32940907 Z$Vd8U;  
Change in Focus                :       1.611296 p}yp!(l  
     16     0.43378226    -0.11025008 1&utf0TX6q  
Change in Focus                :      -0.640081 o[ 4e_ @E  
     17     0.39321881    -0.15081353 %d#j%=  
Change in Focus                :       0.914906 $`|\aXd[C*  
     18     0.20692530    -0.33710703 `it  
Change in Focus                :       0.801607 Xm~N Bt  
     19     0.51374068    -0.03029165 sN@=Ri?\  
Change in Focus                :       0.947293 B3@\Ua)  
     20     0.38013374    -0.16389860 Y i`wj^  
Change in Focus                :       0.667010 /jd.<r=_I  
_'U(q\ri  
Number of traceable Monte Carlo files generated: 20 Y|F~w~Cb  
 *#sY-Gd  
Nominal     0.54403234 Q=F4ZrNqD  
Best        0.54384387    Trial     2 4So ,m0v  
Worst       0.18154684    Trial     4 ^eCMATE  
Mean        0.35770970 n4DKLAl  
Std Dev     0.11156454 ]+@I]\S4  
80Z'1'u0  
YiTVy/  
Compensator Statistics: Ydh+iLjhx  
Change in back focus: ECLQqjB  
Minimum            :        -1.354815 "Rr650w[  
Maximum            :         1.611296 fO 6Jug  
Mean               :         0.161872 v|;}}ol  
Standard Deviation :         0.869664 "uG@gV  
u=PYm+q{  
90% >       0.20977951               A%%Vyz  
80% >       0.22748071               e c4vX  
50% >       0.38667627               ~zL DLr=  
20% >       0.46553746               ~cb7]^#u1l  
10% >       0.50064115                U6LENY+Ja  
0z`-fQfK  
End of Run. )|E617g  
|)b:@q3k+n  
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 m 9.BU2.  

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 :a'[4w  
%%hG],w  
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                 =a!_H=+4  
80% >       0.22748071                 Fu[<zA^  
50% >       0.38667627                 /uJ(&#87  
20% >       0.46553746                 }5]7lGR  
10% >       0.50064115 M992XXd  
*dPG[ }  
最后这个数值是MTF值呢，还是MTF的公差？ o3(:R0  
b&2N7%  
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？？？   k
B-]SD#  
1}ws@hU  
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  : mC} b>\  
90% >       0.20977951                 eI98J"h%?  
80% >       0.22748071                 @cc}[Uw4B  
50% >       0.38667627                 >?[?W|k7V  
20% >       0.46553746                 *#83U?  
10% >       0.50064115 Zs2;VW4RW  
....... T_[  

jHk.]4&0  
%LBf'iA  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   f.0HIc  
Mode                : Sensitivities B.L_EIw  
Sampling            : 2 cZ3A~dTOR  
Nominal Criterion   : 0.54403234 Tnas$=J  
Test Wavelength     : 0.6328  PZj}]d `  
Ld 0j!II(  
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？ u qA!#E
 
8%p+:6kP5  
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