[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 mj&57D\fq  
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然后添加了默认公差分析，基本没变 JTU#vq:TY  
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然后运行分析的结果如下： 2f>PO +4S{  
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Analysis of Tolerances g7\,{Bw#E  
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File : E:\光学设计资料\zemax练习\f500.ZMX m8R9{LC  
Title: 7F^#o-@=J  
Date : TUE JUN 21 2011 t?c}L7ht  
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Units are Millimeters. 0NDftcB]  
All changes are computed using linear differences. oF]cTAqhC.  
80b;I|-T,  
Paraxial Focus compensation only. O.G'?m<:#  
g.py+ ZFJ  
WARNING: Solves should be removed prior to tolerancing. 5xCT~y/a  
V7d)S&*V  
Mnemonics: fq )vK  
TFRN: Tolerance on curvature in fringes. h4|i%,f  
TTHI: Tolerance on thickness. dCyqvg6u  
TSDX: Tolerance on surface decentering in x. #LlUxHv #  
TSDY: Tolerance on surface decentering in y. M`YWn ;  
TSTX: Tolerance on surface tilt in x (degrees). bmgncwlz  
TSTY: Tolerance on surface tilt in y (degrees). vhbDb)J  
TIRR: Tolerance on irregularity (fringes). te
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TIND: Tolerance on Nd index of refraction. S$TmZk=  
TEDX: Tolerance on element decentering in x. G!w"{Bk?9  
TEDY: Tolerance on element decentering in y. in+}/mwfC  
TETX: Tolerance on element tilt in x (degrees). 5|3e&  
TETY: Tolerance on element tilt in y (degrees). qgIb/6;xQ  
F{06 _T  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Snp|!e  

KmG  
WARNING: Boundary constraints on compensators will be ignored. k.<]4iS  
r{\1wt  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm o[oM8o<  
Mode                : Sensitivities U,#yqER'r  
Sampling            : 2 j/=iMq  
Nominal Criterion   : 0.54403234 dr)YzOvba  
Test Wavelength     : 0.6328 T|J9cgtS  
*B`Zq)
  
$mf u:tbP  
Fields: XY Symmetric Angle in degrees OsBo+fwT  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Jk@]tAwoM  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 [Wd-Zn%  
;!:U((wv  
Sensitivity Analysis: fjvN$NgVs  
valtev0<  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| J
B!:JML  
Type                      Value      Criterion        Change          Value      Criterion        Change `E+Jnu,jC  
Fringe tolerance on surface 1 =qN2Xg/  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 zp\8_U@  
Change in Focus                :      -0.000000                            0.000000 S$
KFf=0  
Fringe tolerance on surface 2 P96pm6H_;  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 5T sUQc  
Change in Focus                :       0.000000                            0.000000 ]7-&V-Ct*  
Fringe tolerance on surface 3 u]}s)SmDk  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 oFOnjK"|F  
Change in Focus                :      -0.000000                            0.000000 mF` B#  
Thickness tolerance on surface 1 (c0A.L)  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 W3`>8v1?o  
Change in Focus                :       0.000000                            0.000000 f{SB1M   
Thickness tolerance on surface 2 *JggU  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 wFG3KzEq ~  
Change in Focus                :       0.000000                           -0.000000 {U&.D [{&  
Decenter X tolerance on surfaces 1 through 3 LYlDc;<A  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 o7IxJCL=Q  
Change in Focus                :       0.000000                            0.000000 *#TUGfwy  
Decenter Y tolerance on surfaces 1 through 3 \*=7#Vd  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ge]STSM0n7  
Change in Focus                :       0.000000                            0.000000 EC
v)v  
Tilt X tolerance on surfaces 1 through 3 (degrees) f~}H  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ySI~{YVM  
Change in Focus                :       0.000000                            0.000000 >0Q|nCx  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ^CwR!I.D}4  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 %Uz(Vd
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Change in Focus                :       0.000000                            0.000000 R|i/lEq  
Decenter X tolerance on surface 1 apE  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 GhPK-+"X  
Change in Focus                :       0.000000                            0.000000 o|jIM9/  
Decenter Y tolerance on surface 1 B"%{i-v>**  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 c-.t>r&  
Change in Focus                :       0.000000                            0.000000 Y@PI {;!  
Tilt X tolerance on surface (degrees) 1 2NB L}x  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 q^6+!&"  
Change in Focus                :       0.000000                            0.000000 V!)O6?l  
Tilt Y tolerance on surface (degrees) 1 \QmCeB  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 \U@rg4  
Change in Focus                :       0.000000                            0.000000 fS^!ZPe1  
Decenter X tolerance on surface 2 Nj("|`9"  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 II
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Change in Focus                :       0.000000                            0.000000 Ivb4P`{  
Decenter Y tolerance on surface 2 eb*#'\~'  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 =y=cW1TG  
Change in Focus                :       0.000000                            0.000000 P./VmY'  
Tilt X tolerance on surface (degrees) 2 !UFfsNiXZ  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 z0/} !  
Change in Focus                :       0.000000                            0.000000 9cJH"  
Tilt Y tolerance on surface (degrees) 2 5xii(\lC  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 u,3#M ~  
Change in Focus                :       0.000000                            0.000000 .!JVr"8  
Decenter X tolerance on surface 3 PfkrOsV/m  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $0arz{Oh  
Change in Focus                :       0.000000                            0.000000 (%`QhH  
Decenter Y tolerance on surface 3 2B,] -Mu)  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 z $MV%F  
Change in Focus                :       0.000000                            0.000000 VN%INUi@  
Tilt X tolerance on surface (degrees) 3 xU%w=0z<  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 s|D>-  
Change in Focus                :       0.000000                            0.000000 Z}-Vf$O~  
Tilt Y tolerance on surface (degrees) 3 iDf,e Kk$'  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 wY"Q o7  
Change in Focus                :       0.000000                            0.000000 KoS*0U<g6  
Irregularity of surface 1 in fringes 5O`dO9g}$  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 %$TGzK1  
Change in Focus                :       0.000000                            0.000000 %TsPyiYl  
Irregularity of surface 2 in fringes &d'Awvy0  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 C)cwAU|h#  
Change in Focus                :       0.000000                            0.000000 <x!GE>sf+  
Irregularity of surface 3 in fringes q{ O% |  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 }MlwC;ot  
Change in Focus                :       0.000000                            0.000000 ]D,MiDph  
Index tolerance on surface 1 h&kZjQ&  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 B
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Change in Focus                :       0.000000                            0.000000 A4ISNM7R[  
Index tolerance on surface 2 =~+DUMBT  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 6)BR+U  
Change in Focus                :       0.000000                           -0.000000 M?;y\vS?.  
VM0j`bs'K*  
Worst offenders: \cCV6A[  
Type                      Value      Criterion        Change mg,j
:,  
TSTY   2            -0.20000000     0.35349910    -0.19053324 c5mZG7-  
TSTY   2             0.20000000     0.35349910    -0.19053324 x
zx$TUL  
TSTX   2            -0.20000000     0.35349910    -0.19053324 w;l<[q?_  
TSTX   2             0.20000000     0.35349910    -0.19053324 C{d7J'Avk  
TSTY   1            -0.20000000     0.42678383    -0.11724851 I<A6Z&*un  
TSTY   1             0.20000000     0.42678383    -0.11724851 JCW\ *R  
TSTX   1            -0.20000000     0.42678383    -0.11724851 |`jjHuQ;  
TSTX   1             0.20000000     0.42678383    -0.11724851 2./3 \n2  
TSTY   3            -0.20000000     0.42861670    -0.11541563 oP4GEr  
TSTY   3             0.20000000     0.42861670    -0.11541563 Y \:0Ev  
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Estimated Performance Changes based upon Root-Sum-Square method: t>H`X~SR?  
Nominal MTF                 :     0.54403234 @'=Uq  
Estimated change            :    -0.36299231 B7"PIkk;  
Estimated MTF               :     0.18104003 bz| D-.  
IVW1]y  
Compensator Statistics: x\Y $+A,P  
Change in back focus: Dnc<sd;  
Minimum            :        -0.000000 _$>pw<  
Maximum            :         0.000000 kEd@oC  
Mean               :        -0.000000 \Y}3cE  
Standard Deviation :         0.000000 _wdG|{p
x  
l|hUw  
Monte Carlo Analysis: U!m@DJj  
Number of trials: 20 F9*g=  
3T&6opaF  
Initial Statistics: Normal Distribution Xo*
DvD  
<?D\+khlq  
  Trial       Criterion        Change [ib P%xb  
      1     0.42804416    -0.11598818 %4W$Lq}  
Change in Focus                :      -0.400171 CwX Z  
      2     0.54384387    -0.00018847 zuJtpMn  
Change in Focus                :       1.018470 !*`-iQo&  
      3     0.44510003    -0.09893230 b<]n%Q'n  
Change in Focus                :      -0.601922 LjU'z#  
      4     0.18154684    -0.36248550 Q#IG;  
Change in Focus                :       0.920681 WF\)fc#;_o  
      5     0.28665820    -0.25737414 ?i`l[+G  
Change in Focus                :       1.253875 #M!!CX*k  
      6     0.21263372    -0.33139862 WYc7aciJ  
Change in Focus                :      -0.903878 %e@HZ"V  
      7     0.40051424    -0.14351809 Y-0?a?q2Fr  
Change in Focus                :      -1.354815 "U\JV)N  
      8     0.48754161    -0.05649072 ,<:!NF9  
Change in Focus                :       0.215922 K6olYG>  
      9     0.40357468    -0.14045766 0KD]j8^  
Change in Focus                :       0.281783 )yo
a  
     10     0.26315315    -0.28087919 SIKOFs  
Change in Focus                :      -1.048393 .] `f,^v<c  
     11     0.26120585    -0.28282649 rS1fK1dys  
Change in Focus                :       1.017611 *:O.97q@h  
     12     0.24033815    -0.30369419 J6<rX[ yZe  
Change in Focus                :      -0.109292 Z;h<6[(  
     13     0.37164046    -0.17239188 S(mF%WJ  
Change in Focus                :      -0.692430 `EtS!zD~b  
     14     0.48597489    -0.05805744 @zgdq  
Change in Focus                :      -0.662040 V i&*&"q  
     15     0.21462327    -0.32940907 .I@CS>j  
Change in Focus                :       1.611296 =~I-]4  
     16     0.43378226    -0.11025008
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Change in Focus                :      -0.640081 M3~K,$@  
     17     0.39321881    -0.15081353 n$[f94d=  
Change in Focus                :       0.914906 N4*G{g  
     18     0.20692530    -0.33710703 >O5m5@GK3a  
Change in Focus                :       0.801607 jLJ1u/l>;  
     19     0.51374068    -0.03029165 }$\M{#C~  
Change in Focus                :       0.947293 vS;1/->WD  
     20     0.38013374    -0.16389860 r&Ca"dI  
Change in Focus                :       0.667010 .Gcy>Av  
pZyQY+O  
Number of traceable Monte Carlo files generated: 20 eyp,y2Tz  
oy<WUb9W  
Nominal     0.54403234 KFZm`,+69  
Best        0.54384387    Trial     2 BA=,7y&;j  
Worst       0.18154684    Trial     4 6'W[{gzl  
Mean        0.35770970 zS< jd~  
Std Dev     0.11156454 8UkKU_Uso  
{NJfNu  
l6kmS  
Compensator Statistics: [Ei1~n)o  
Change in back focus: VB<Jf'NU  
Minimum            :        -1.354815 "G:<7oTa  
Maximum            :         1.611296 V]S1X^
 
Mean               :         0.161872 1T)Zh+?)}  
Standard Deviation :         0.869664 VzJ5.mRQ  
oQ=>'w  
90% >       0.20977951               -{ u*qtp  
80% >       0.22748071               ""svDfy$  
50% >       0.38667627               gGMWr.! 8  
20% >       0.46553746               Rte+(- iL  
10% >       0.50064115                $0^P0RAH  
@u._"/K  
End of Run. D=TL>T.bf  
8^B;1`#  
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 MCh#="L2  
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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 u =gt<1U  

=e?$M  
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                 dRvin[R8  
80% >       0.22748071                 \.e4.[%[2-  
50% >       0.38667627                 dPjhq(8 zU  
20% >       0.46553746                 ix Z)tNz  
10% >       0.50064115
/vE]2Io  
D&hqV)d4R  
最后这个数值是MTF值呢，还是MTF的公差？ *Zd84wRSj  
A[UP"P~u/  
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？？？   =FW5Tkw0  
Ul Mi.;/^  
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  : >rR
f9wO1l  
90% >       0.20977951                 k46gY7y,9  
80% >       0.22748071                 b:B[3|  
50% >       0.38667627                 dM|g`rr E  
20% >       0.46553746                 G)+Ff5e0L[  
10% >       0.50064115 jyjQzt >\  
....... )<LI%dQ:'l  

LkaG[^tfN  
(n=Aa;  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   p)z-W(  
Mode                : Sensitivities z"av|(?d  
Sampling            : 2 KZ4zF  
Nominal Criterion   : 0.54403234 (. H]|  
Test Wavelength     : 0.6328 {tmKCG  
=f4<({9  
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？ _2; ^v`[  
~ ;XYwQ"  
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