[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 )|zna{g\  
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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 xd`!z`X!,s  
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图片:2.jpg

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然后运行分析的结果如下： ,o)U9<  
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Analysis of Tolerances NTtRz(  
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File : E:\光学设计资料\zemax练习\f500.ZMX Tse Pdkk  
Title: MO$dim>  
Date : TUE JUN 21 2011 .%4{
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_}B:SM  
Units are Millimeters. B:\TvWbu  
All changes are computed using linear differences. <KDl2>O  
nC5  
Paraxial Focus compensation only. 21BlLz  
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WARNING: Solves should be removed prior to tolerancing. r.:H`  
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Mnemonics: Bu$GCSrX  
TFRN: Tolerance on curvature in fringes. Ng} AEAFp  
TTHI: Tolerance on thickness. XHlx89v7  
TSDX: Tolerance on surface decentering in x. QAy9RQ0  
TSDY: Tolerance on surface decentering in y. zoV-@<Eh  
TSTX: Tolerance on surface tilt in x (degrees). E@_M|=p&  
TSTY: Tolerance on surface tilt in y (degrees). L_rKVoKjt  
TIRR: Tolerance on irregularity (fringes). yv<0fQ  
TIND: Tolerance on Nd index of refraction. ^Q?I8,4}  
TEDX: Tolerance on element decentering in x. -R;.Md_  
TEDY: Tolerance on element decentering in y. !Fz9\|  
TETX: Tolerance on element tilt in x (degrees). t'EH_U  
TETY: Tolerance on element tilt in y (degrees). E5M*Gs  
/N ^%=G#  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. f#p.=F$  
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WARNING: Boundary constraints on compensators will be ignored. uj-q@IKe  
<'4DMZ-G  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4565U  
Mode                : Sensitivities ]AGJPuX  
Sampling            : 2 T@]vjXd![  
Nominal Criterion   : 0.54403234 mdOF0b%-]  
Test Wavelength     : 0.6328 WQ]~TGW  
{=,?]Z+  
r^?%N3  
Fields: XY Symmetric Angle in degrees m//(1hWv7  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY .JpYZ |  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 q
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>=2nAv/(  
Sensitivity Analysis: gTR:9E:B  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| {cv,Tz[Q>  
Type                      Value      Criterion        Change          Value      Criterion        Change &Sc}3UI/F  
Fringe tolerance on surface 1 'PlKCn`(w  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 (*%+!PS  
Change in Focus                :      -0.000000                            0.000000 0rT-8iJp4P  
Fringe tolerance on surface 2 M)#R_(Q5{  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 KW.S)+<H&  
Change in Focus                :       0.000000                            0.000000 Fa9]!bW  
Fringe tolerance on surface 3 ^
AD/N|X^  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 q5[%B K  
Change in Focus                :      -0.000000                            0.000000 ;1cX|N=  
Thickness tolerance on surface 1 S&V5zB""n  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 z1LATy  
Change in Focus                :       0.000000                            0.000000 _SC>EP8:Z  
Thickness tolerance on surface 2 CPGXwM=   
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 (G"b)"Qum  
Change in Focus                :       0.000000                           -0.000000 Ckvm3r\i2  
Decenter X tolerance on surfaces 1 through 3 HqU"iY>b  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 j*$GP'Df3  
Change in Focus                :       0.000000                            0.000000 X63DBF4A  
Decenter Y tolerance on surfaces 1 through 3 q]5"V>D \  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 F#
iLMO&Q  
Change in Focus                :       0.000000                            0.000000 >.#uoW4ZV  
Tilt X tolerance on surfaces 1 through 3 (degrees) "31GC7  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Gn;eh~uw;l  
Change in Focus                :       0.000000                            0.000000 W?'!}g(~  
Tilt Y tolerance on surfaces 1 through 3 (degrees) FQ?H%UcW  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0sq/_S  
Change in Focus                :       0.000000                            0.000000 bs]ret$?(q  
Decenter X tolerance on surface 1 q!<`ci,uS  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 tGd9Cs9D<  
Change in Focus                :       0.000000                            0.000000 5D]%E?ag  
Decenter Y tolerance on surface 1 \GbT^!dj  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ix]3t^
 
Change in Focus                :       0.000000                            0.000000 89@89-_mC  
Tilt X tolerance on surface (degrees) 1 i2$U##-ro]  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 (1(3:)@S6  
Change in Focus                :       0.000000                            0.000000 iAT&C`,(&  
Tilt Y tolerance on surface (degrees) 1 S_6`.@B}  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 pp#Kb 2*  
Change in Focus                :       0.000000                            0.000000 f<WnPoV  
Decenter X tolerance on surface 2 Z[AJat@H  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 N"T~U\R  
Change in Focus                :       0.000000                            0.000000 ,vW.vq<{q3  
Decenter Y tolerance on surface 2 T[<ll
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TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .^djB x  
Change in Focus                :       0.000000                            0.000000
QKZm<lUL  
Tilt X tolerance on surface (degrees) 2 ssi{(}H/Jv  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ss,t[`AV{  
Change in Focus                :       0.000000                            0.000000 C3bZ3vcW$  
Tilt Y tolerance on surface (degrees) 2 >H5BY9]I  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 cPI #XPM=  
Change in Focus                :       0.000000                            0.000000 @OFl^
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Decenter X tolerance on surface 3 X'jEI{1w  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *xU^e`P  
Change in Focus                :       0.000000                            0.000000 cdP+X'Y4D  
Decenter Y tolerance on surface 3 >}u?{_s *0  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \fU{$  
Change in Focus                :       0.000000                            0.000000 d)
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Tilt X tolerance on surface (degrees) 3 ;b cy(Fp,\  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 4VaUa8 D  
Change in Focus                :       0.000000                            0.000000 G~a/g6M4  
Tilt Y tolerance on surface (degrees) 3 5&2=;?EO  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5:CC\!&QBV  
Change in Focus                :       0.000000                            0.000000 %r6~5_A  
Irregularity of surface 1 in fringes ):LJ {.0R  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ;-^WUf|
 
Change in Focus                :       0.000000                            0.000000 L\_8}\  
Irregularity of surface 2 in fringes pR 1v^m|  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 vT%rg r  
Change in Focus                :       0.000000                            0.000000 ~LO MwMHl  
Irregularity of surface 3 in fringes IOTHk+w  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 kZ`60X%w
E  
Change in Focus                :       0.000000                            0.000000 5[X^1
 
Index tolerance on surface 1 !&SUoa  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 TDtk
'=;  
Change in Focus                :       0.000000                            0.000000 )5d&K8@  
Index tolerance on surface 2 0>Ki([3  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 3
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Change in Focus                :       0.000000                           -0.000000 _rs!6tp  
:;{U2q+  
Worst offenders: wOHK dQ'  
Type                      Value      Criterion        Change V}pw ,2s  
TSTY   2            -0.20000000     0.35349910    -0.19053324 .yi.GRk  
TSTY   2             0.20000000     0.35349910    -0.19053324 nsw.\(#  
TSTX   2            -0.20000000     0.35349910    -0.19053324 a2Q9tt>Q  
TSTX   2             0.20000000     0.35349910    -0.19053324 i0p"q p  
TSTY   1            -0.20000000     0.42678383    -0.11724851 a_QO)  
TSTY   1             0.20000000     0.42678383    -0.11724851 r1ctW#\~8  
TSTX   1            -0.20000000     0.42678383    -0.11724851 39"8Nq|e  
TSTX   1             0.20000000     0.42678383    -0.11724851 Xd|@w{.m*  
TSTY   3            -0.20000000     0.42861670    -0.11541563 4w]u: eU  
TSTY   3             0.20000000     0.42861670    -0.11541563 o~<fw]y  
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Estimated Performance Changes based upon Root-Sum-Square method: biKpV?Dp  
Nominal MTF                 :     0.54403234 O+.V,`O  
Estimated change            :    -0.36299231 -U%wLkf|  
Estimated MTF               :     0.18104003 <&l3bL  
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Compensator Statistics: SAThY$)6  
Change in back focus: )]>=Uo  
Minimum            :        -0.000000 h5Qxa$Oq  
Maximum            :         0.000000 8"8sI  
Mean               :        -0.000000 Om>6<3n  
Standard Deviation :         0.000000 ",&}vfD4M  
`9S<E  
Monte Carlo Analysis: T{sw{E*  
Number of trials: 20 us`hR!_  
6sQ"go$}  
Initial Statistics: Normal Distribution ms;Lu-UR  
fcJ#\-+E  
  Trial       Criterion        Change ,@Ed)Zoh  
      1     0.42804416    -0.11598818 5IdmKP|  
Change in Focus                :      -0.400171 Sm+Ek@Ax  
      2     0.54384387    -0.00018847 \vFkhm  
Change in Focus                :       1.018470 2$[u&__E  
      3     0.44510003    -0.09893230 C/!2q$  
Change in Focus                :      -0.601922 bB)EJCPq>  
      4     0.18154684    -0.36248550 PcUi+[s;x  
Change in Focus                :       0.920681 .%WbXs  
      5     0.28665820    -0.25737414 u@|GQXC  
Change in Focus                :       1.253875 =\:YNP/  
      6     0.21263372    -0.33139862 J&8l1{gd  
Change in Focus                :      -0.903878 X5>p~;[9  
      7     0.40051424    -0.14351809 OWOj|jM  
Change in Focus                :      -1.354815 8{Zgvqbb  
      8     0.48754161    -0.05649072 :Q?xNY%  
Change in Focus                :       0.215922 bmt2~!  
      9     0.40357468    -0.14045766 3.R?=npA  
Change in Focus                :       0.281783 qMI%=@=  
     10     0.26315315    -0.28087919 V)N9V|O'  
Change in Focus                :      -1.048393 aeH 9:GQ6  
     11     0.26120585    -0.28282649 tQ?? nI2  
Change in Focus                :       1.017611 )2bPu[U  
     12     0.24033815    -0.30369419 R['qBHQ?  
Change in Focus                :      -0.109292 uo 7AU3\  
     13     0.37164046    -0.17239188 ]MUuz'<
 
Change in Focus                :      -0.692430 Fo;xA  
     14     0.48597489    -0.05805744 3TtnLay.k  
Change in Focus                :      -0.662040 M5Pvc  
     15     0.21462327    -0.32940907 5G\vV]RR&  
Change in Focus                :       1.611296 $qIMYX  
     16     0.43378226    -0.11025008 _5.7HEw>/  
Change in Focus                :      -0.640081 Q4c>gds`  
     17     0.39321881    -0.15081353 "'6KQnpZ  
Change in Focus                :       0.914906 mI"|^!L  
     18     0.20692530    -0.33710703 oWx! 'K6]V  
Change in Focus                :       0.801607 =C<_rBY  
     19     0.51374068    -0.03029165 5p=T*Y  
Change in Focus                :       0.947293 T:na\y/{j  
     20     0.38013374    -0.16389860 #MOEY|6  
Change in Focus                :       0.667010 5^f>L2  
mjB%"w!S  
Number of traceable Monte Carlo files generated: 20 ']}ZI 8  
(hd2&mSy  
Nominal     0.54403234 ,VJ0J!@  
Best        0.54384387    Trial     2 Zf?>:P  
Worst       0.18154684    Trial     4 %G\rL.H|  
Mean        0.35770970 \J9@p  
Std Dev     0.11156454 Y}nE/bmx&9  
`;QpPSw+  
8LR_K]\  
Compensator Statistics: g%RL9-z  
Change in back focus: a8Ci 7<V  
Minimum            :        -1.354815 P"3{s+ r  
Maximum            :         1.611296 E(TL+o  
Mean               :         0.161872 =<a`G3SY!  
Standard Deviation :         0.869664 3}LTEsdM  
.rN5A+By`  
90% >       0.20977951               ;t"#7\  
80% >       0.22748071               MlS<txFPS  
50% >       0.38667627               oryoGy=(yk  
20% >       0.46553746               )ZNH/9e/  
10% >       0.50064115                I.q nA  
QXgh[9wG  
End of Run. gZ/M0px  
0P%(4t$pd  
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 8n);NZ  

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 Tfs7SC8ta  
SaQ_%-&#p  
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                 &Q(Q/
]U~  
80% >       0.22748071                 8WfF: R;  
50% >       0.38667627                 tezsoR!.ak  
20% >       0.46553746                 x_bS-B)%Y:  
10% >       0.50064115 y{U'\  
!)_80O1  
最后这个数值是MTF值呢，还是MTF的公差？ Y@_ i32,r  
76mQ$ze  
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？？？   I_'vVbK+>  
(9fqUbG  
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  : v}+axu/?  
90% >       0.20977951                 rRYP~ $c  
80% >       0.22748071                 bxqXFy/I  
50% >       0.38667627                 w`c9_V  
20% >       0.46553746                 J=Ak+J  
10% >       0.50064115 |.*),t3 (w  
....... h34|v=8d  

;]i&AAbj  
7iLm_#M  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   b+OLmd  
Mode                : Sensitivities 
&oWWc$  
Sampling            : 2 zb?wlfT  
Nominal Criterion   : 0.54403234 9RE{,mos2v  
Test Wavelength     : 0.6328 --Dw  
y$r9Y!?s  
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？ ^W_}Gd<-#Y  
79s6U^vv"  
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