[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 L3pNna  
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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 "w7wd5h  
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图片:2.jpg

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然后运行分析的结果如下： y<|8OTT  
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Analysis of Tolerances k nTCX  
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File : E:\光学设计资料\zemax练习\f500.ZMX fAYp\k  
Title: TuG%oV}   
Date : TUE JUN 21 2011 +6-_9qRq  
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Units are Millimeters. 21_sg f?  
All changes are computed using linear differences. V(wm?Cc]  
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Paraxial Focus compensation only. '3Ro`p{  
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WARNING: Solves should be removed prior to tolerancing. #:[^T,YD0  
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Mnemonics: t[}&*2"$/  
TFRN: Tolerance on curvature in fringes. jJbS{1z  
TTHI: Tolerance on thickness. &65I 6  
TSDX: Tolerance on surface decentering in x. JP{Y Q:NF  
TSDY: Tolerance on surface decentering in y. #7v=#Jco  
TSTX: Tolerance on surface tilt in x (degrees). h\-3Y U  
TSTY: Tolerance on surface tilt in y (degrees). zpgRK4p,I"  
TIRR: Tolerance on irregularity (fringes). efN5(9*9R  
TIND: Tolerance on Nd index of refraction. y8%QS*  
TEDX: Tolerance on element decentering in x. l\tg.O~  
TEDY: Tolerance on element decentering in y. Ndmki 7A  
TETX: Tolerance on element tilt in x (degrees). rUn1*KWbE  
TETY: Tolerance on element tilt in y (degrees). T$!Pkdh  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. L5DeLF+  
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WARNING: Boundary constraints on compensators will be ignored. $&Lw 2 c0  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm XmJ?oPr7  
Mode                : Sensitivities _*wkTI+j  
Sampling            : 2 ?uh%WN6nU]  
Nominal Criterion   : 0.54403234 ,,8'29yEq  
Test Wavelength     : 0.6328 o#uhPUZ
 
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Fields: XY Symmetric Angle in degrees hm,H3pN  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY __%
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1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 XcFu:B  
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Sensitivity Analysis: dt5`UBvUg  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| +k;][VC[O  
Type                      Value      Criterion        Change          Value      Criterion        Change 7<0oK|~c#  
Fringe tolerance on surface 1 x~?|bnM#3  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 C23Gp3_0/  
Change in Focus                :      -0.000000                            0.000000 `D $ "K1u  
Fringe tolerance on surface 2 fA)4'7UT  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 OE/r0C<&  
Change in Focus                :       0.000000                            0.000000 L'HO"EZFj  
Fringe tolerance on surface 3 e'X"uH Xt.  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ?>Bt|[p:s)  
Change in Focus                :      -0.000000                            0.000000 '$h0l-mQ  
Thickness tolerance on surface 1 }hA)p:  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 a|-B#S  
Change in Focus                :       0.000000                            0.000000 wBCBZs$H  
Thickness tolerance on surface 2 C]a iu  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 eI
cIl2  
Change in Focus                :       0.000000                           -0.000000 R[W'LRh~:1  
Decenter X tolerance on surfaces 1 through 3 F%I*m^7d  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ask
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Change in Focus                :       0.000000                            0.000000 UYH&x:WEd  
Decenter Y tolerance on surfaces 1 through 3 {#N,&?[  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 chur(@Af  
Change in Focus                :       0.000000                            0.000000 `svOPB4C'  
Tilt X tolerance on surfaces 1 through 3 (degrees) 0Wb3M"#9<  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 mW)C=X%  
Change in Focus                :       0.000000                            0.000000 _SrkR7  
Tilt Y tolerance on surfaces 1 through 3 (degrees) u vyvy  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 &4m;9<8\  
Change in Focus                :       0.000000                            0.000000 & &:ZY4`  
Decenter X tolerance on surface 1 \ccCrDz  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 \|7Y"WEQ  
Change in Focus                :       0.000000                            0.000000 qf*e2"~v  
Decenter Y tolerance on surface 1 ^.>XDUO F  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ub-vtRpm  
Change in Focus                :       0.000000                            0.000000 &ER,;^H`6  
Tilt X tolerance on surface (degrees) 1 ,-)ww:  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 vPsf{[Kr  
Change in Focus                :       0.000000                            0.000000 :@,UPc-+  
Tilt Y tolerance on surface (degrees) 1 ]4[^S.T=  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ?Lem|zo  
Change in Focus                :       0.000000                            0.000000 A}CpyRVCn  
Decenter X tolerance on surface 2 y^:6D(SR  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KV|ywcGhT  
Change in Focus                :       0.000000                            0.000000 $+n5l@W  
Decenter Y tolerance on surface 2 +IM6 GeH  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $ItPUYi";  
Change in Focus                :       0.000000                            0.000000 q;<Q-jr&O  
Tilt X tolerance on surface (degrees) 2 J1d|L|M  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ?j$*a7[w  
Change in Focus                :       0.000000                            0.000000 89fl\18%  
Tilt Y tolerance on surface (degrees) 2 {\5-b:#_  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 nE"0?VNW$  
Change in Focus                :       0.000000                            0.000000 W C3b_ia  
Decenter X tolerance on surface 3 |dqv
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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +zzS  
Change in Focus                :       0.000000                            0.000000 x=3+@'  
Decenter Y tolerance on surface 3 ^ =RSoR  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nEh^{6  
Change in Focus                :       0.000000                            0.000000 :s
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Tilt X tolerance on surface (degrees) 3 l`vr({A  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 y:dwx*Q9I  
Change in Focus                :       0.000000                            0.000000 Cz#3W8jV  
Tilt Y tolerance on surface (degrees) 3 eo'C)j# U  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 hP=z<&zb/  
Change in Focus                :       0.000000                            0.000000 vQ
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Irregularity of surface 1 in fringes kA(q-Re$B*  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 %M;{+90p>t  
Change in Focus                :       0.000000                            0.000000 J9`[Qy\  
Irregularity of surface 2 in fringes ?p!+s96  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ii]'XBSVd  
Change in Focus                :       0.000000                            0.000000 ZUUfn~ORc  
Irregularity of surface 3 in fringes z,/y2H2  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 nwAx47>{  
Change in Focus                :       0.000000                            0.000000 +hd1|qa4  
Index tolerance on surface 1
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TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 -g)*v<Fb5  
Change in Focus                :       0.000000                            0.000000 5A*'@Fr'G  
Index tolerance on surface 2 ^p!bteA>  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 a3oSSkT  
Change in Focus                :       0.000000                           -0.000000 /'0,cJnm  
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Worst offenders: Is !DiB  
Type                      Value      Criterion        Change od~`q4p1(-  
TSTY   2            -0.20000000     0.35349910    -0.19053324 DwC8?s*2H  
TSTY   2             0.20000000     0.35349910    -0.19053324 =v]
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TSTX   2            -0.20000000     0.35349910    -0.19053324 "rIBy  
TSTX   2             0.20000000     0.35349910    -0.19053324 ,JmA e6  
TSTY   1            -0.20000000     0.42678383    -0.11724851 9 ulr6  
TSTY   1             0.20000000     0.42678383    -0.11724851 JPTVZ  
TSTX   1            -0.20000000     0.42678383    -0.11724851 "227 U)Q  
TSTX   1             0.20000000     0.42678383    -0.11724851 zVs|go>F  
TSTY   3            -0.20000000     0.42861670    -0.11541563 7w=%aW|  
TSTY   3             0.20000000     0.42861670    -0.11541563 JTg0T+  
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Estimated Performance Changes based upon Root-Sum-Square method: ICgyCsZ,  
Nominal MTF                 :     0.54403234 ^NTOZ0x~#
 
Estimated change            :    -0.36299231 a4M`Bk;mb  
Estimated MTF               :     0.18104003 VClw!bm  
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Compensator Statistics: .o5r;KD  
Change in back focus: D;Jb'Be  
Minimum            :        -0.000000 g1`/xJz|  
Maximum            :         0.000000 #Rdq^TGMi;  
Mean               :        -0.000000 N:@C% UW}  
Standard Deviation :         0.000000 #UH7z 4u  

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Monte Carlo Analysis: d/OIc){tD  
Number of trials: 20 ;DKwv}  
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Initial Statistics: Normal Distribution *
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  Trial       Criterion        Change B1A5b=6G<  
      1     0.42804416    -0.11598818 -zVa[&  
Change in Focus                :      -0.400171 2;`"B|-T  
      2     0.54384387    -0.00018847 ;pNHT*>u,  
Change in Focus                :       1.018470 0R2
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      3     0.44510003    -0.09893230 [y T4n.f  
Change in Focus                :      -0.601922 1XO*yZF  
      4     0.18154684    -0.36248550 ^eEj 5Rh  
Change in Focus                :       0.920681 +mT}};-TS  
      5     0.28665820    -0.25737414
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Change in Focus                :       1.253875 f.=4p^  
      6     0.21263372    -0.33139862 c])b?dJ*  
Change in Focus                :      -0.903878
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      7     0.40051424    -0.14351809 <nj[=C4v  
Change in Focus                :      -1.354815 Sn/~R|3XA7  
      8     0.48754161    -0.05649072 $E4W{ad2jW  
Change in Focus                :       0.215922 QWf)5S  
      9     0.40357468    -0.14045766 h tn2`  
Change in Focus                :       0.281783 >M^ 1m(  
     10     0.26315315    -0.28087919 VmkYl$WZo  
Change in Focus                :      -1.048393 [j0I}+@4H  
     11     0.26120585    -0.28282649 LxVd7r VY6  
Change in Focus                :       1.017611 Wx/!Myu  
     12     0.24033815    -0.30369419 <5(8LMF  
Change in Focus                :      -0.109292 :u{0M&  
     13     0.37164046    -0.17239188 iEki<e/  
Change in Focus                :      -0.692430 y+?tUSPP  
     14     0.48597489    -0.05805744 2`vCQV  
Change in Focus                :      -0.662040 *ma/_rjK  
     15     0.21462327    -0.32940907 9VN@M  
Change in Focus                :       1.611296 fT8Id\6js  
     16     0.43378226    -0.11025008 [JVI@1T  
Change in Focus                :      -0.640081 KW&&AuPb}  
     17     0.39321881    -0.15081353 $YSD%/c  
Change in Focus                :       0.914906 $#@4i4TN-  
     18     0.20692530    -0.33710703 R\:C|/6f  
Change in Focus                :       0.801607 A0rdQmrOL  
     19     0.51374068    -0.03029165 NI(`o8fN  
Change in Focus                :       0.947293 J6[x(T  
     20     0.38013374    -0.16389860 4_N)1u !  
Change in Focus                :       0.667010 Whd4-pR8  
MQY1he2M  
Number of traceable Monte Carlo files generated: 20 9$Mi/eLG2N  
*!9/`zW  
Nominal     0.54403234 +ZE&]
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Best        0.54384387    Trial     2 d=qpTb;(  
Worst       0.18154684    Trial     4 e^XijId.  
Mean        0.35770970 ;*W]]4fy  
Std Dev     0.11156454 qW7"qw=   
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Compensator Statistics: L''0`a. +S  
Change in back focus: qqzQKN  
Minimum            :        -1.354815 r$v?[x>+K  
Maximum            :         1.611296 Lf0Hz")  
Mean               :         0.161872 1wc -v@E  
Standard Deviation :         0.869664 P1) 80<t  
DAu|`pyC%  
90% >       0.20977951               4E |6l  
80% >       0.22748071               xk|$Oa  
50% >       0.38667627               Rc6 )v  
20% >       0.46553746               f6L_uk`{  
10% >       0.50064115                LDBR4@V  
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End of Run. J82{PfQ"  
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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 0='DDy  

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 ;2@sn+@  

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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                 %f-<ol  
80% >       0.22748071                 Nb#7&_f=  
50% >       0.38667627                 6g"<i}_|  
20% >       0.46553746                 5HbTgNI  
10% >       0.50064115 Qwa"AY5pW  
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最后这个数值是MTF值呢，还是MTF的公差？ V[I<9xaE  
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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？？？   =_dd4`G&<  
68c;V
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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  : ]az} n(B,  
90% >       0.20977951                 b#;N!VX
 
80% >       0.22748071                 X_({};mz  
50% >       0.38667627                 T:S
{3  
20% >       0.46553746                 _Q}RElA  
10% >       0.50064115 ~<aeA'>OA  
....... ) .-(-6=R  

;k&k#>L!K  
(bFWT_CChz  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   .FbZVYc]  
Mode                : Sensitivities %QsSR'`  
Sampling            : 2 (_&V9vat=  
Nominal Criterion   : 0.54403234 4}8+)Pd  
Test Wavelength     : 0.6328 M`C~6Mf+  
P$6f+{  
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？ -M1~iOb  
!7kLFW  
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