[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 j.-VJo)   
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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 m>Ux`Gp+  
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图片:2.jpg

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然后运行分析的结果如下： 9rj('F&1  
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Analysis of Tolerances c]Un
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File : E:\光学设计资料\zemax练习\f500.ZMX C@dGWAG  
Title: KvFR8s  
Date : TUE JUN 21 2011 ZW ye>]  
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Units are Millimeters. >7-y#SkXdo  
All changes are computed using linear differences. P!+v:'P5f  
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Paraxial Focus compensation only. !y vJpdsof  
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WARNING: Solves should be removed prior to tolerancing. , p0KLU\-  
9G:TW|)L[Q  
Mnemonics: QJ<[Zx  
TFRN: Tolerance on curvature in fringes. 4UCwT1  
TTHI: Tolerance on thickness. >_Uj?F:  
TSDX: Tolerance on surface decentering in x. ko[TDh$T5  
TSDY: Tolerance on surface decentering in y. PKtU:Eg  
TSTX: Tolerance on surface tilt in x (degrees). {vfq  
TSTY: Tolerance on surface tilt in y (degrees). CM 9P"-  
TIRR: Tolerance on irregularity (fringes). ^tE_LL+ji|  
TIND: Tolerance on Nd index of refraction. Qyj(L[KJ  
TEDX: Tolerance on element decentering in x. .)ST[G]WK  
TEDY: Tolerance on element decentering in y. iPU% /_>  
TETX: Tolerance on element tilt in x (degrees). ?vu|o'$T,  
TETY: Tolerance on element tilt in y (degrees). Zd<[=%d  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. VN|G5*  
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WARNING: Boundary constraints on compensators will be ignored. 7Dl%UG]  
4;\Y?M}g?  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm WFh@%j  
Mode                : Sensitivities ``-k{C#F  
Sampling            : 2 G.ud1,S#  
Nominal Criterion   : 0.54403234 qz:]-A  
Test Wavelength     : 0.6328 Iq,v  
}J;~P 9Y  
i`~~+6`J  
Fields: XY Symmetric Angle in degrees .}p|`3$P  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY )VY10R)$  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 5+FLSk  
" dT>KQ  
Sensitivity Analysis: t&f" jPu>  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| p"KV*D9b  
Type                      Value      Criterion        Change          Value      Criterion        Change 8*)4"rS  
Fringe tolerance on surface 1 !w=,p.?V=  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ]^!}*  
Change in Focus                :      -0.000000                            0.000000 hNVMz`r  
Fringe tolerance on surface 2 k#jm7 +  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ?360SQ<  
Change in Focus                :       0.000000                            0.000000 #ko6L3Pi  
Fringe tolerance on surface 3 96)v#B?p  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 -$ali[  
Change in Focus                :      -0.000000                            0.000000 @H4wHlb  
Thickness tolerance on surface 1 S~|tfJpL  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 hg#c[sZL  
Change in Focus                :       0.000000                            0.000000 +I.v!P!^  
Thickness tolerance on surface 2 t[q3{-  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 s[Gswd  
Change in Focus                :       0.000000                           -0.000000 HSql)iT  
Decenter X tolerance on surfaces 1 through 3 ]0YDb~UB  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 hG~Uz
  
Change in Focus                :       0.000000                            0.000000 (k#t}B[  
Decenter Y tolerance on surfaces 1 through 3 %Y 2G  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 D9G0k[D,  
Change in Focus                :       0.000000                            0.000000 n531rkK-   
Tilt X tolerance on surfaces 1 through 3 (degrees) (ic@
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TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 5E.vje{U
;  
Change in Focus                :       0.000000                            0.000000 Q6|@N~UeZ  
Tilt Y tolerance on surfaces 1 through 3 (degrees) q!@c_o  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 X$PS(_M  
Change in Focus                :       0.000000                            0.000000 ]eD[4Y\#t  
Decenter X tolerance on surface 1 \aB&{`iG  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ja:\W\xhJ  
Change in Focus                :       0.000000                            0.000000 YOlH*cZtg  
Decenter Y tolerance on surface 1 v<`$bvv?  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5Ny0b|+p  
Change in Focus                :       0.000000                            0.000000 tB!|p6  
Tilt X tolerance on surface (degrees) 1 0pCDEs  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ul9b.`6  
Change in Focus                :       0.000000                            0.000000 ]ci RiMkT(  
Tilt Y tolerance on surface (degrees) 1 xNx`J@xt$  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E~qK&7+  
Change in Focus                :       0.000000                            0.000000 [@zkv)D6  
Decenter X tolerance on surface 2 {YfYIt=.  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 wb@]>MJ}[s  
Change in Focus                :       0.000000                            0.000000 |:}L<9Sq  
Decenter Y tolerance on surface 2 + p'\(Z(  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 hPS/CgLq  
Change in Focus                :       0.000000                            0.000000 `}ZL'\G  
Tilt X tolerance on surface (degrees) 2 m9uUDq#GJ  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 %"{?[!C ?  
Change in Focus                :       0.000000                            0.000000 9/^d~ZO  
Tilt Y tolerance on surface (degrees) 2 gMCy$+?  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ?!rU |D  
Change in Focus                :       0.000000                            0.000000 "^!j5fZ  
Decenter X tolerance on surface 3 B piEAwh  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 [10$a(g\x  
Change in Focus                :       0.000000                            0.000000 "NlRSc#  
Decenter Y tolerance on surface 3 ;\1b{-' l  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 @RQ+JYQi  
Change in Focus                :       0.000000                            0.000000 @i\7k(9:A  
Tilt X tolerance on surface (degrees) 3 x={kjym L  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5NFq7&rJ6  
Change in Focus                :       0.000000                            0.000000 Un~]
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Tilt Y tolerance on surface (degrees) 3 zCyR<as7  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }D(DU5r  
Change in Focus                :       0.000000                            0.000000 ,C
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Irregularity of surface 1 in fringes ya;@<b  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 9j9YQ2  
Change in Focus                :       0.000000                            0.000000 % 1OC#&  
Irregularity of surface 2 in fringes aS2a_!f  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 rE9Ta8j6  
Change in Focus                :       0.000000                            0.000000 uT#Acg  
Irregularity of surface 3 in fringes se}pdL}  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 T,A!5V>cX  
Change in Focus                :       0.000000                            0.000000 3KB|NS  
Index tolerance on surface 1 "Wxo[I  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ?]759,Q3L  
Change in Focus                :       0.000000                            0.000000 JvT%R`i  
Index tolerance on surface 2 9@JlaY)0  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 I=Gr^\x=  
Change in Focus                :       0.000000                           -0.000000 Zjw
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Worst offenders: >B@i E  
Type                      Value      Criterion        Change &E} 
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TSTY   2            -0.20000000     0.35349910    -0.19053324 721{Ga4~S  
TSTY   2             0.20000000     0.35349910    -0.19053324 ))8Emk^Q{  
TSTX   2            -0.20000000     0.35349910    -0.19053324 = E##},N"  
TSTX   2             0.20000000     0.35349910    -0.19053324 gNG0k$nP  
TSTY   1            -0.20000000     0.42678383    -0.11724851 7uWJ6Wk
 
TSTY   1             0.20000000     0.42678383    -0.11724851 "TEBByO'  
TSTX   1            -0.20000000     0.42678383    -0.11724851 JI28O8  
TSTX   1             0.20000000     0.42678383    -0.11724851 Cb4d|yiS8  
TSTY   3            -0.20000000     0.42861670    -0.11541563 m T>b;  
TSTY   3             0.20000000     0.42861670    -0.11541563 Krt$=:m|1  
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Estimated Performance Changes based upon Root-Sum-Square method: k8!hvJ)?  
Nominal MTF                 :     0.54403234 N[- %0  
Estimated change            :    -0.36299231 3'|Uqf8  
Estimated MTF               :     0.18104003
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Compensator Statistics: m~A[V,os  
Change in back focus: gPF}aaB
6  
Minimum            :        -0.000000 Fr938q6^-  
Maximum            :         0.000000 5]A$P\7~1  
Mean               :        -0.000000 T)
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Standard Deviation :         0.000000 we6+2  
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Monte Carlo Analysis: ^TuP=q5?  
Number of trials: 20 @]?? +f}#  
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Initial Statistics: Normal Distribution Qivf|H619  
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  Trial       Criterion        Change #"3[f@|e  
      1     0.42804416    -0.11598818 ze#rYNvo/  
Change in Focus                :      -0.400171 r&H=i  
      2     0.54384387    -0.00018847 c+)36/; X  
Change in Focus                :       1.018470 Y3 Pz00x  
      3     0.44510003    -0.09893230 tal>b]B;  
Change in Focus                :      -0.601922 M6o xtt4  
      4     0.18154684    -0.36248550 .b!OZ  
Change in Focus                :       0.920681 UBUB/NY  
      5     0.28665820    -0.25737414 j3sz*:  
Change in Focus                :       1.253875 s0X/1Cq  
      6     0.21263372    -0.33139862 '7RR2f>V  
Change in Focus                :      -0.903878 nm{'HH-4  
      7     0.40051424    -0.14351809 0{^l2?mgSb  
Change in Focus                :      -1.354815 <=5,(a5g  
      8     0.48754161    -0.05649072 \UkNE5  
Change in Focus                :       0.215922 e{qp!N1!  
      9     0.40357468    -0.14045766 Xy3g(x]  
Change in Focus                :       0.281783 qY*
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     10     0.26315315    -0.28087919 t wa(M?  
Change in Focus                :      -1.048393 ue^?/{OuT  
     11     0.26120585    -0.28282649 F1{?]>G  
Change in Focus                :       1.017611 &UJTy'  
     12     0.24033815    -0.30369419 14@q$}sf  
Change in Focus                :      -0.109292 )e
TnR:=  
     13     0.37164046    -0.17239188 (IO\+  
Change in Focus                :      -0.692430 9^b7jw  
     14     0.48597489    -0.05805744 |)|vG_  
Change in Focus                :      -0.662040 @SF")j|  
     15     0.21462327    -0.32940907 ?vL^:f["  
Change in Focus                :       1.611296 5~ *'>y  
     16     0.43378226    -0.11025008 >h/)r6  
Change in Focus                :      -0.640081 it/C y\f  
     17     0.39321881    -0.15081353 )|59FOWg  
Change in Focus                :       0.914906 F| ,Vw{  
     18     0.20692530    -0.33710703 0
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Change in Focus                :       0.801607 ]`CKQ> o  
     19     0.51374068    -0.03029165 {=pP`HD0  
Change in Focus                :       0.947293 bSeL"   
     20     0.38013374    -0.16389860 SoM ]2^  
Change in Focus                :       0.667010 Wj  
L&3Ar'  
Number of traceable Monte Carlo files generated: 20 =oKPMmpCZ  
$fj"*   
Nominal     0.54403234 };VGH/}&s  
Best        0.54384387    Trial     2 LNyL>VHkK  
Worst       0.18154684    Trial     4 ShsP]$Yp  
Mean        0.35770970 iC5JU&l  
Std Dev     0.11156454 v0H>iKh7  
=E6i1x%j  
&a2V-|G',  
Compensator Statistics: ,pGCgOG#}c  
Change in back focus: )n3biQL_  
Minimum            :        -1.354815 fDm}J  
Maximum            :         1.611296 B 3,ig9  
Mean               :         0.161872 _+R_ms  
Standard Deviation :         0.869664 ?[L0LL?ce  
8
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90% >       0.20977951               !z4Hj{A_  
80% >       0.22748071               0F;(_2V-  
50% >       0.38667627               40l#'< y;  
20% >       0.46553746               MRl*rK  
10% >       0.50064115                Ik@Q@ T"  
6&xW9' 6b:  
End of Run. ]= QCCC  
WSpg(\Cs  
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 RZ,<D I  

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 +D{*L0$D"  
M@LaD 5  
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                 8!fAv$g0  
80% >       0.22748071                 @aPu}Hi  
50% >       0.38667627                 Vi-!E  
20% >       0.46553746                 uc(yos  
10% >       0.50064115 y8WXp_\  
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最后这个数值是MTF值呢，还是MTF的公差？ L!Zxc~  
uB&I56  
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？？？   ZzaW@6LJF  
{4jSj0W  
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  : &=O1Qg=K  
90% >       0.20977951                 tce8*:rNH  
80% >       0.22748071                 dV*rnpN  
50% >       0.38667627                 eC:Q)%$%l  
20% >       0.46553746                 &8L\FAY0%9  
10% >       0.50064115 m|gd9m$,?  
....... 4^9_E&Fa  

Eu~wbU"%  
q)y8Bv|  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   u6d~d\  
Mode                : Sensitivities K
<(sqH  
Sampling            : 2 ZJM^P'r.1c  
Nominal Criterion   : 0.54403234 k= 1+mG  
Test Wavelength     : 0.6328 <7) 6*u  
]`9K|v  
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？ OUMr}~/
 
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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