[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 P0$q{ j  
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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 .hgc1  
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图片:2.jpg

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然后运行分析的结果如下： IGql^,b  
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Analysis of Tolerances `a:@[0r0U  
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File : E:\光学设计资料\zemax练习\f500.ZMX .x6*9z#q  
Title: ZcX%:ebKS  
Date : TUE JUN 21 2011  AO;+XP=  
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Units are Millimeters. ]V]~I.  
All changes are computed using linear differences. M O* m@  
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Paraxial Focus compensation only. u 8U>R=M  
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WARNING: Solves should be removed prior to tolerancing. @Sub.z&T{  
i1vBg}WHN  
Mnemonics: OjMDxG w  
TFRN: Tolerance on curvature in fringes. }<FBcc(n  
TTHI: Tolerance on thickness. 0Qw?.#[9  
TSDX: Tolerance on surface decentering in x. EPI mh  
TSDY: Tolerance on surface decentering in y. F#4?@W  
TSTX: Tolerance on surface tilt in x (degrees). <3HW!7Ad1  
TSTY: Tolerance on surface tilt in y (degrees). O:r<es1  
TIRR: Tolerance on irregularity (fringes). &[I#5bGk  
TIND: Tolerance on Nd index of refraction. oX3Q9)  
TEDX: Tolerance on element decentering in x. nUmA  
TEDY: Tolerance on element decentering in y. lhQ*;dMj%"  
TETX: Tolerance on element tilt in x (degrees). LLgN%!&  
TETY: Tolerance on element tilt in y (degrees). ,Q(n(m'  
]lQhIf6)k  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. VbBZ\`b  
L)Un9&4L  
WARNING: Boundary constraints on compensators will be ignored. (U!WD`Ym  
PKdM-R'Z  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ,2H5CFX/  
Mode                : Sensitivities )^%,\l-!  
Sampling            : 2 Jd1eOeS  
Nominal Criterion   : 0.54403234 sXoBw.^Ir_  
Test Wavelength     : 0.6328 sdS<-! %u4  
),bdj+wr78  
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Fields: XY Symmetric Angle in degrees ?]kIztH  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY U <4<8'  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 'y-IE#!5  
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Sensitivity Analysis: 'r1&zw(  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 8Mws?]\/q  
Type                      Value      Criterion        Change          Value      Criterion        Change !6<2JNf  
Fringe tolerance on surface 1 o>U%3-+T^J  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Yz-b~D/=}  
Change in Focus                :      -0.000000                            0.000000 X:8=jHk
z  
Fringe tolerance on surface 2 ( }JX ]-  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Kh<v2  
Change in Focus                :       0.000000                            0.000000 *XtZ;os]  
Fringe tolerance on surface 3 5Odi\SJ&  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 a^Zn }R r  
Change in Focus                :      -0.000000                            0.000000 3w{i5gGn  
Thickness tolerance on surface 1
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TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 `mCcD  
Change in Focus                :       0.000000                            0.000000 dP)8T  
Thickness tolerance on surface 2 gvA&F|4  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 C6'[Tn  
Change in Focus                :       0.000000                           -0.000000 /"iYEr%_  
Decenter X tolerance on surfaces 1 through 3 Vx* =  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 3:
mF!  
Change in Focus                :       0.000000                            0.000000 \8Blq5n-O*  
Decenter Y tolerance on surfaces 1 through 3 +#&2*nY  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 D\*raQ`n  
Change in Focus                :       0.000000                            0.000000 HLk}E*.mC  
Tilt X tolerance on surfaces 1 through 3 (degrees) m} Yf6:cr  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 IHxX:a/iv  
Change in Focus                :       0.000000                            0.000000 <PV @JJ"  
Tilt Y tolerance on surfaces 1 through 3 (degrees) )%,bog(x  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 @ULr)&9  
Change in Focus                :       0.000000                            0.000000 zT_{M qY  
Decenter X tolerance on surface 1 w`#lLl B  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 JvHJ*E   
Change in Focus                :       0.000000                            0.000000 !xe<@$  
Decenter Y tolerance on surface 1 T w"^I*B  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ,3fw"P$  
Change in Focus                :       0.000000                            0.000000 IUu[`\b=  
Tilt X tolerance on surface (degrees) 1  KsUsj3J  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 L]HY*e  
Change in Focus                :       0.000000                            0.000000 7z%zXDe~T[  
Tilt Y tolerance on surface (degrees) 1 u{>5  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 TC R(  
Change in Focus                :       0.000000                            0.000000 -QZped;?*  
Decenter X tolerance on surface 2 gvy%`SSW  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 [xI@)5Xk  
Change in Focus                :       0.000000                            0.000000 (#Y2H  
Decenter Y tolerance on surface 2 ZB ~D_S  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $fnFi|-  
Change in Focus                :       0.000000                            0.000000 e
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Tilt X tolerance on surface (degrees) 2 <'GI<Hc  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /1MO]u\  
Change in Focus                :       0.000000                            0.000000 vRT1tOQ$  
Tilt Y tolerance on surface (degrees) 2 1L &_3}  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ns1u0$fg  
Change in Focus                :       0.000000                            0.000000 +(|T\%$DT  
Decenter X tolerance on surface 3 n$b/@hp$z  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `?Y/:4  
Change in Focus                :       0.000000                            0.000000 dAAE2}e  
Decenter Y tolerance on surface 3 /ebYk-c  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 pazFVzT  
Change in Focus                :       0.000000                            0.000000 vhhsOga  
Tilt X tolerance on surface (degrees) 3 YO-O-NEP  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 t~@TUTbx  
Change in Focus                :       0.000000                            0.000000 TSuHY0.cp  
Tilt Y tolerance on surface (degrees) 3 1Z`<HW"  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 YtIJJH  
Change in Focus                :       0.000000                            0.000000 yiI&>J))  
Irregularity of surface 1 in fringes t
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TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 *5|\if\  
Change in Focus                :       0.000000                            0.000000 M>T#MDK\(  
Irregularity of surface 2 in fringes &1
B)mj  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 WVwNjQ2PM  
Change in Focus                :       0.000000                            0.000000
40q8,M  
Irregularity of surface 3 in fringes c]xpp;%]  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 |5![k<o#  
Change in Focus                :       0.000000                            0.000000 Xb;CY9&  
Index tolerance on surface 1 "t\rjFw  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 gQ/zk3?k  
Change in Focus                :       0.000000                            0.000000 jRq>Sz{8  
Index tolerance on surface 2 C{Npipd}v  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 eKLxNw5  
Change in Focus                :       0.000000                           -0.000000 //6m2a  
RHB>svT^K>  
Worst offenders: Ye1P5+W(  
Type                      Value      Criterion        Change `9$?g|rB  
TSTY   2            -0.20000000     0.35349910    -0.19053324 i>e75`9  
TSTY   2             0.20000000     0.35349910    -0.19053324 S!g&&RDx  
TSTX   2            -0.20000000     0.35349910    -0.19053324 T8qG9)~3  
TSTX   2             0.20000000     0.35349910    -0.19053324 JQbI^ef_;  
TSTY   1            -0.20000000     0.42678383    -0.11724851 M)3h 4yQ  
TSTY   1             0.20000000     0.42678383    -0.11724851 TWxMexiW  
TSTX   1            -0.20000000     0.42678383    -0.11724851 Wxp^*._q3I  
TSTX   1             0.20000000     0.42678383    -0.11724851 <cWo]T`X!  
TSTY   3            -0.20000000     0.42861670    -0.11541563 dd$\Q  
TSTY   3             0.20000000     0.42861670    -0.11541563 O gycP4z[  
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Estimated Performance Changes based upon Root-Sum-Square method: (>)Y0ki}  
Nominal MTF                 :     0.54403234 h!)(R<  
Estimated change            :    -0.36299231 kv5D=0r  
Estimated MTF               :     0.18104003 N8mK^{  
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Compensator Statistics: :Eob"WH  
Change in back focus: zHx?-Q&3  
Minimum            :        -0.000000 &G'R{s&"  
Maximum            :         0.000000 d5WE^H)E.  
Mean               :        -0.000000 Vuz!~kLYIn  
Standard Deviation :         0.000000 Y @K9Hl
  
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Monte Carlo Analysis: )fCl<KG*  
Number of trials: 20 :!aFfb["  
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Initial Statistics: Normal Distribution r%xNfTa  
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  Trial       Criterion        Change oXz:zoN
Q  
      1     0.42804416    -0.11598818 o]k[l;  
Change in Focus                :      -0.400171 6o6m"6  
      2     0.54384387    -0.00018847 BKJW\gS2  
Change in Focus                :       1.018470 $x`U)pv  
      3     0.44510003    -0.09893230 &os*@0h4  
Change in Focus                :      -0.601922 tc# rL  
      4     0.18154684    -0.36248550 ozGK
-$  
Change in Focus                :       0.920681 ]Q)TqwYF  
      5     0.28665820    -0.25737414 U>:p`@  
Change in Focus                :       1.253875 ok[R`99  
      6     0.21263372    -0.33139862 i44KTC"sB  
Change in Focus                :      -0.903878 47t^{WrT  
      7     0.40051424    -0.14351809 SUvHLOA  
Change in Focus                :      -1.354815 0eb`9yM  
      8     0.48754161    -0.05649072 U8.DPRa  
Change in Focus                :       0.215922 `%rqQnVB  
      9     0.40357468    -0.14045766 Ou,B3kuQ+  
Change in Focus                :       0.281783 7AtJ6  
     10     0.26315315    -0.28087919 Be}Cj(C  
Change in Focus                :      -1.048393 1FY^_dvH  
     11     0.26120585    -0.28282649 i@d!g"tot  
Change in Focus                :       1.017611 KXR  
     12     0.24033815    -0.30369419 7$b78wax  
Change in Focus                :      -0.109292 6idYz"P %  
     13     0.37164046    -0.17239188 <hS >L1ZSr  
Change in Focus                :      -0.692430 B\N,%vsx#U  
     14     0.48597489    -0.05805744 ~omX(kPzK  
Change in Focus                :      -0.662040 ;i,yT ?so  
     15     0.21462327    -0.32940907 Ba@UX(t  
Change in Focus                :       1.611296 Q@l3XNH|c  
     16     0.43378226    -0.11025008 a:@Eg;aN*O  
Change in Focus                :      -0.640081 G =lC[i  
     17     0.39321881    -0.15081353  BeP0lZ  
Change in Focus                :       0.914906 
sd#a_  
     18     0.20692530    -0.33710703 -+c_TJ.dC  
Change in Focus                :       0.801607 rsiG]o=8  
     19     0.51374068    -0.03029165 YMm Fpy  
Change in Focus                :       0.947293 kbOo;<X9A  
     20     0.38013374    -0.16389860 aIJ[K  
Change in Focus                :       0.667010 !&! sn"yD  
;l~gA|A  
Number of traceable Monte Carlo files generated: 20 q \0>SG  
PBkKn3P3  
Nominal     0.54403234 ]k>S0  
Best        0.54384387    Trial     2 m-ZVlj  
Worst       0.18154684    Trial     4 9g "?`_  
Mean        0.35770970 Rrk3EL  
Std Dev     0.11156454 =X>?Y,  
<51(q_f  
C+2
*m=r  
Compensator Statistics: T;.#=h  
Change in back focus: n?:s/6tP  
Minimum            :        -1.354815 M-0BQs`N  
Maximum            :         1.611296 *Q5/d9B8TN  
Mean               :         0.161872 cojuU=i  
Standard Deviation :         0.869664 @u$4{sjgf\  
Z?1.Y7Npr  
90% >       0.20977951               Q- j+#NGc  
80% >       0.22748071               
Jf4D">h  
50% >       0.38667627               U%U%a,rA5s  
20% >       0.46553746               .pG_j]  
10% >       0.50064115                Ns&SZO  
'KM@$2tK^q  
End of Run. lts{<AU~  
uiO8F*,!&r  
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 ,9
 

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 x!gu&AA<
*  
265df Y9Pu  
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                 @=isN'>]O  
80% >       0.22748071                 `og 3P:y  
50% >       0.38667627                 :l'61$=  
20% >       0.46553746                 V80g+)|  
10% >       0.50064115 T:q!>"5  
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最后这个数值是MTF值呢，还是MTF的公差？ ;r B2Q H]  
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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？？？   XFUlV;ek  
8rx?mX,}  
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  : ^k{b8-)W<  
90% >       0.20977951                 '&v.h#<  
80% >       0.22748071                 b{4@~>i  
50% >       0.38667627                 G)5R iRcs  
20% >       0.46553746                 2aj9:S  
10% >       0.50064115 w1>uD]  
....... Dfz3\|LJ  

\MhSIlM#  
.l1uqCuB  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   B=!&rKF  
Mode                : Sensitivities Pk{eGG<F$  
Sampling            : 2 ECW=865jL  
Nominal Criterion   : 0.54403234 ^\"@r%|  
Test Wavelength     : 0.6328 41^=z[k  
z:gp\  
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？ ]wxjd l  
#S4lRVt5  
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