[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 Kq&qE>Ju  
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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 llq*T"
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图片:2.jpg

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然后运行分析的结果如下： dv~pddOs  
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Analysis of Tolerances fW(/Loh  
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File : E:\光学设计资料\zemax练习\f500.ZMX M-J<n>hl  
Title: 7+nm31,<O  
Date : TUE JUN 21 2011 u7s"0f`  
Zw{MgoJ0Z  
Units are Millimeters. @g-G =Ba  
All changes are computed using linear differences. 3K>gz:dt  
6e
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Paraxial Focus compensation only. V.6)0fKZW  
E{y1S\7K  
WARNING: Solves should be removed prior to tolerancing. *k [J6  
W.I\J<=V  
Mnemonics: Kqg!,Sn|  
TFRN: Tolerance on curvature in fringes. ]$A(9Pn"  
TTHI: Tolerance on thickness. h Dk)Qg  
TSDX: Tolerance on surface decentering in x. SeEw.;Xw  
TSDY: Tolerance on surface decentering in y. Xg7|JS!  
TSTX: Tolerance on surface tilt in x (degrees). sOBu7!G%  
TSTY: Tolerance on surface tilt in y (degrees). 5Bjgr  
TIRR: Tolerance on irregularity (fringes). ,.tfWN%t\  
TIND: Tolerance on Nd index of refraction. CnISe^h  
TEDX: Tolerance on element decentering in x. i47j lyH  
TEDY: Tolerance on element decentering in y. e6E?t[hEeS  
TETX: Tolerance on element tilt in x (degrees). ;_O)p,p  
TETY: Tolerance on element tilt in y (degrees). vLT0ETHg6  
upy\gkpnGO  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2;2}wM[  
Kibr ]w  
WARNING: Boundary constraints on compensators will be ignored. d0'HDVd  
#
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm !do?~$Og  
Mode                : Sensitivities 9'[ N1Un.=  
Sampling            : 2 x,n,Qlb  
Nominal Criterion   : 0.54403234 o0bM=njok  
Test Wavelength     : 0.6328 U{@5*4  
T-_"|-k}P%  
c>:R3^\lwx  
Fields: XY Symmetric Angle in degrees Cbm\h/PXl  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY NZ0O,}m  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 qS|\JG  
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Sensitivity Analysis: -7 U|a/  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 9(4&KZpK  
Type                      Value      Criterion        Change          Value      Criterion        Change $za8"T*I  
Fringe tolerance on surface 1 5=|hC3h  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 *{ {b~$  
Change in Focus                :      -0.000000                            0.000000 ^T::-pN*  
Fringe tolerance on surface 2 <h-vjz  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 sEJC-$  
Change in Focus                :       0.000000                            0.000000 #S]ER907  
Fringe tolerance on surface 3 Om;&_!
i  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 7*5Z  
Change in Focus                :      -0.000000                            0.000000 %Dg0fL  
Thickness tolerance on surface 1 RTh`ENCKR  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &-d&t` `  
Change in Focus                :       0.000000                            0.000000 4)|8Eu[p7  
Thickness tolerance on surface 2 E_e6^Sk5B(  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 6 5N~0t  
Change in Focus                :       0.000000                           -0.000000 Gs+3
e8  
Decenter X tolerance on surfaces 1 through 3 Zwz&rIQpT  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,EGQ@:3/  
Change in Focus                :       0.000000                            0.000000 d?`ny#,GB  
Decenter Y tolerance on surfaces 1 through 3 !$-\;<bZw  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 i0$Bx>  
Change in Focus                :       0.000000                            0.000000 }X*Riu7gk  
Tilt X tolerance on surfaces 1 through 3 (degrees) 0Z[oKXm1p  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 FKNMtp[`  
Change in Focus                :       0.000000                            0.000000 8_<4-<}P:  
Tilt Y tolerance on surfaces 1 through 3 (degrees) .qMOGbd?  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 |KSy`lY-j>  
Change in Focus                :       0.000000                            0.000000 ~T&<CTh  
Decenter X tolerance on surface 1 VCXJwVb
  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 7(5xL T$  
Change in Focus                :       0.000000                            0.000000 6KpHnSW  
Decenter Y tolerance on surface 1 MjlP+; !  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <:SZAAoIV  
Change in Focus                :       0.000000                            0.000000 1N7Kv4,  
Tilt X tolerance on surface (degrees) 1 wr[,  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 R" ;xvo*  
Change in Focus                :       0.000000                            0.000000 P"B0_EuR<T  
Tilt Y tolerance on surface (degrees) 1 Ag{iq(X  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 3|.um_  
Change in Focus                :       0.000000                            0.000000 B2-V@06  
Decenter X tolerance on surface 2 yKYTi3_(  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /"eey(X  
Change in Focus                :       0.000000                            0.000000 JSW^dw&  
Decenter Y tolerance on surface 2 ]]Cb$$Td  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 At-U2a#J{  
Change in Focus                :       0.000000                            0.000000 !O`(JSoG  
Tilt X tolerance on surface (degrees) 2 #Q2Y&2`yGT  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 T:5fc2Ngv  
Change in Focus                :       0.000000                            0.000000 1P~X8=9h  
Tilt Y tolerance on surface (degrees) 2 su*'d:L  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324
MyT q  
Change in Focus                :       0.000000                            0.000000 /YZr~|65  
Decenter X tolerance on surface 3 x>Zn?YR,"  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 o4|M0  
Change in Focus                :       0.000000                            0.000000 SQX:7YF~  
Decenter Y tolerance on surface 3 rg^'S1x|  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 "rx-_uK*  
Change in Focus                :       0.000000                            0.000000 _lamn}(x0  
Tilt X tolerance on surface (degrees) 3 ["h5!vj  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 nih0
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Change in Focus                :       0.000000                            0.000000 rJGf.qJJ  
Tilt Y tolerance on surface (degrees) 3 Tj:B!>>  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 -[cTx[Z,  
Change in Focus                :       0.000000                            0.000000 Qk:
Y2mL  
Irregularity of surface 1 in fringes wne,e's}   
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Xu%'Z".>:  
Change in Focus                :       0.000000                            0.000000 Tf'hc]`vS  
Irregularity of surface 2 in fringes %J+E/  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 E=nIRG|g  
Change in Focus                :       0.000000                            0.000000 jYk&/@`Ly  
Irregularity of surface 3 in fringes 8X[:j&@  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 k$blEa4  
Change in Focus                :       0.000000                            0.000000 [CQ+p!QZ  
Index tolerance on surface 1 9Z4nAc
 
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]s<[D$ <,  
Change in Focus                :       0.000000                            0.000000 nLXlU*ES  
Index tolerance on surface 2 VK m&iidU  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 V<GHpFi0  
Change in Focus                :       0.000000                           -0.000000 *\ R ]NV  
IG2r#N|C#  
Worst offenders: u_oaebOrpP  
Type                      Value      Criterion        Change !>FYK}c7  
TSTY   2            -0.20000000     0.35349910    -0.19053324 m|n  
TSTY   2             0.20000000     0.35349910    -0.19053324 ~vm%6CABM  
TSTX   2            -0.20000000     0.35349910    -0.19053324 >g1~CEMN#  
TSTX   2             0.20000000     0.35349910    -0.19053324 d,k!qjf=r  
TSTY   1            -0.20000000     0.42678383    -0.11724851 oB(?_No7  
TSTY   1             0.20000000     0.42678383    -0.11724851 5_GYrR2  
TSTX   1            -0.20000000     0.42678383    -0.11724851 3lrT3a3vV  
TSTX   1             0.20000000     0.42678383    -0.11724851 SW@$ci  
TSTY   3            -0.20000000     0.42861670    -0.11541563 we;-~A5J  
TSTY   3             0.20000000     0.42861670    -0.11541563 <? q?Mn  
Cio 1E-4  
Estimated Performance Changes based upon Root-Sum-Square method: IaSR;/  
Nominal MTF                 :     0.54403234 ,LHn90S  
Estimated change            :    -0.36299231 ;17E(tl  
Estimated MTF               :     0.18104003 8W*%aOi5+  
{'7B6  
Compensator Statistics:
X_q\Sg  
Change in back focus: ,0M_Bk"  
Minimum            :        -0.000000 6AAz  
Maximum            :         0.000000 |3(' N#|  
Mean               :        -0.000000 Ua
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Standard Deviation :         0.000000 &GpRI(OB/+  
rD*jp6Cl  
Monte Carlo Analysis: Ytn9B}%o  
Number of trials: 20 >^u2cAi3[  
`KZm0d{H  
Initial Statistics: Normal Distribution d[iQ`YW5  
b6,iZ+]  
  Trial       Criterion        Change Ouk^O}W6  
      1     0.42804416    -0.11598818 uy>q7C  
Change in Focus                :      -0.400171 `+]Qz =}  
      2     0.54384387    -0.00018847 ?>7[7(|  
Change in Focus                :       1.018470 W: z6Koc0  
      3     0.44510003    -0.09893230 Ogqj?]2QC  
Change in Focus                :      -0.601922 \1k79c  
      4     0.18154684    -0.36248550 C7]f*TSC4  
Change in Focus                :       0.920681 <$D`Z-6  
      5     0.28665820    -0.25737414 8?xE6  
Change in Focus                :       1.253875 R)c?`:iUB  
      6     0.21263372    -0.33139862 OAgniLv  
Change in Focus                :      -0.903878 M H|Og84  
      7     0.40051424    -0.14351809 0_jf/an,%  
Change in Focus                :      -1.354815 1I%w?^sm_  
      8     0.48754161    -0.05649072 #]\Uk,mhZB  
Change in Focus                :       0.215922 /J]5H  
      9     0.40357468    -0.14045766 /!0=
{G  
Change in Focus                :       0.281783 &h}#HS>l  
     10     0.26315315    -0.28087919 |Tv#4st  
Change in Focus                :      -1.048393 z<MsKD0Q  
     11     0.26120585    -0.28282649 p?02C#p  
Change in Focus                :       1.017611 &T#;-`'  
     12     0.24033815    -0.30369419 eb?x9h  
Change in Focus                :      -0.109292 D,k6$`  
     13     0.37164046    -0.17239188 J"0`%'*/  
Change in Focus                :      -0.692430 ?e%ZOI  
     14     0.48597489    -0.05805744 dn&s*  
Change in Focus                :      -0.662040 8'[~2/  
     15     0.21462327    -0.32940907 ]}V<*f  
Change in Focus                :       1.611296 M`0V~P`^  
     16     0.43378226    -0.11025008 4j-Xi  
Change in Focus                :      -0.640081 4VHn \  
     17     0.39321881    -0.15081353 :a!^
  
Change in Focus                :       0.914906 irZ]
)a  
     18     0.20692530    -0.33710703 +5)nk}  
Change in Focus                :       0.801607  \__i  
     19     0.51374068    -0.03029165 {4l8}w  
Change in Focus                :       0.947293 +V2F#fI/  
     20     0.38013374    -0.16389860 A@`}c,G  
Change in Focus                :       0.667010 kBS9tKBWg  
n3WlZ!$  
Number of traceable Monte Carlo files generated: 20 ::`HQ@^  
9p]QM)M  
Nominal     0.54403234 !M(xG%M-V  
Best        0.54384387    Trial     2 &s(^@Oa
yE  
Worst       0.18154684    Trial     4 jVi) Efy  
Mean        0.35770970 TP*hd  
Std Dev     0.11156454 x5pdS:  
#`^}PuQ  
a,,exi  
Compensator Statistics: j;zM{qu_  
Change in back focus: GC-5X`Sq  
Minimum            :        -1.354815 ,CJWO bn3  
Maximum            :         1.611296 ,KH#NY]  
Mean               :         0.161872 [+Iz@0q  
Standard Deviation :         0.869664 Q3'llOx  
@NR>{Eg  
90% >       0.20977951               y RqL9t  
80% >       0.22748071               #<fRE"v:Q  
50% >       0.38667627               i$Ul(?  
20% >       0.46553746               ,~U>'&M;  
10% >       0.50064115                ./Xz}<($8  
yxPazz  
End of Run. KYm0@O>;  
iqsCB%;5  
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 RHW]Z Pr<  

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 HZE#Ab*L  
ic:zsuEm  
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                 H7Rx>h_  
80% >       0.22748071                 "S]0  
50% >       0.38667627                 Dj?> <@  
20% >       0.46553746                 F{e@W([  
10% >       0.50064115 3*XNV  
D/gw .XYL  
最后这个数值是MTF值呢，还是MTF的公差？ m])y.T  
net@j#}j-  
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？？？   xIW3={b3  
G_8RK,H.  
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  : BLdvyVFx  
90% >       0.20977951                 }O
5i/#.lR  
80% >       0.22748071                 L(<*)No  
50% >       0.38667627                 'Cfl*iNb  
20% >       0.46553746                 P>C~ i:4n  
10% >       0.50064115 zp
Zm&WC  
....... WIT>!|w_  

~9]hV7y5C  
 .Wj;%|  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   R6.hA_ih  
Mode                : Sensitivities HGs $*  
Sampling            : 2 T{.pM4Hd  
Nominal Criterion   : 0.54403234 DDP/DD;n}r  
Test Wavelength     : 0.6328 TH&U j1  
nu[ML  
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？ FEz-+X<q2  
ZF9z~9  
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