[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 }b1FB<e]  
VJ=>2'I  

图片:1.JPG

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然后添加了默认公差分析，基本没变 ~L"$(^/  
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图片:2.jpg

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然后运行分析的结果如下： v!8=B21  
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Analysis of Tolerances %\v8FCb  
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File : E:\光学设计资料\zemax练习\f500.ZMX W;'fAohr  
Title: 54CJ6"q  
Date : TUE JUN 21 2011 ;U|(rM;  
U\p`YZ  
Units are Millimeters. {_Wrs.a'8  
All changes are computed using linear differences. g5|~i{"0  
dgjK\pH`h  
Paraxial Focus compensation only. TIKkS*$  
Z-Uu/GjB  
WARNING: Solves should be removed prior to tolerancing. K9lekevB  
Qz,2PO  
Mnemonics: st;i
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TFRN: Tolerance on curvature in fringes. BS*79heY  
TTHI: Tolerance on thickness. 393c |8M  
TSDX: Tolerance on surface decentering in x. SvT0%2  
TSDY: Tolerance on surface decentering in y. 3uocAmY  
TSTX: Tolerance on surface tilt in x (degrees). ,7LfvZj4[  
TSTY: Tolerance on surface tilt in y (degrees). "esuLQC  
TIRR: Tolerance on irregularity (fringes). F(yR\)!C  
TIND: Tolerance on Nd index of refraction. A$=ny6  
TEDX: Tolerance on element decentering in x. pL"{Uqi  
TEDY: Tolerance on element decentering in y. b^VRpv  
TETX: Tolerance on element tilt in x (degrees). gS5REC4I/  
TETY: Tolerance on element tilt in y (degrees). 6u0>3-[6OD  
2%sZaM  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. %d
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[UA*We 1  
WARNING: Boundary constraints on compensators will be ignored. P |tyyjO  
B/wD~xC?x  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm YGJ!!(~r  
Mode                : Sensitivities Vr EGR$  
Sampling            : 2 ENuL!H>;*  
Nominal Criterion   : 0.54403234 "[N2qJ}p  
Test Wavelength     : 0.6328 ENZym
  
8Yh'/,o=L#  
bzFac5n)Q  
Fields: XY Symmetric Angle in degrees G*I  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY >qo!#vJc a  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 -qc'J<*^4  
&DWSf`:Hx  
Sensitivity Analysis: M-nRhso  
Voo'ZeZa  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Y~vk>
ZC  
Type                      Value      Criterion        Change          Value      Criterion        Change I=kqkuW  
Fringe tolerance on surface 1 Kk8wlC  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 w a_{\v=  
Change in Focus                :      -0.000000                            0.000000 9^
XZ|`  
Fringe tolerance on surface 2 ,^([aK  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 UjI./"]O  
Change in Focus                :       0.000000                            0.000000 h9QM nH'  
Fringe tolerance on surface 3
f)*?Ji|5F  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 (%X *b.n=  
Change in Focus                :      -0.000000                            0.000000 !-lI<$S:  
Thickness tolerance on surface 1
I{89chi  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 gy}3ZA*F  
Change in Focus                :       0.000000                            0.000000 juR>4SH  
Thickness tolerance on surface 2 6
TW<,SM  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 y|| n9  
Change in Focus                :       0.000000                           -0.000000 d_25]B(  
Decenter X tolerance on surfaces 1 through 3 v6 U!(x  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a51(ySC}<s  
Change in Focus                :       0.000000                            0.000000 cg8/v:B  
Decenter Y tolerance on surfaces 1 through 3 &V?+Y2  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 /(^-=pAX  
Change in Focus                :       0.000000                            0.000000 l ms^|?  
Tilt X tolerance on surfaces 1 through 3 (degrees) *:CTIV5N0  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 }k VC]+  
Change in Focus                :       0.000000                            0.000000 d~aTjf  
Tilt Y tolerance on surfaces 1 through 3 (degrees) p%$r\G-x  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 BQ6$T&  
Change in Focus                :       0.000000                            0.000000 }!iopu  
Decenter X tolerance on surface 1 PA^*|^;Xh  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 jWUrw  
Change in Focus                :       0.000000                            0.000000 \^(#b,k#  
Decenter Y tolerance on surface 1 SD^::bH  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 k9 r49lb  
Change in Focus                :       0.000000                            0.000000 -9om,U`t  
Tilt X tolerance on surface (degrees) 1 q]="ek&_  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 E<yQB39  
Change in Focus                :       0.000000                            0.000000 a?y ucA  
Tilt Y tolerance on surface (degrees) 1 w~+*Vd~U  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5$U49j  
Change in Focus                :       0.000000                            0.000000 (csk   
Decenter X tolerance on surface 2 1|p\rHGd  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 %Ik5|\ob?  
Change in Focus                :       0.000000                            0.000000 791v>h   
Decenter Y tolerance on surface 2 0")_%  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ;rf{T[i  
Change in Focus                :       0.000000                            0.000000 4m\Cc_:jO  
Tilt X tolerance on surface (degrees) 2 vVBWhY]  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 c^_+<C-F  
Change in Focus                :       0.000000                            0.000000 q,sO<1wAT\  
Tilt Y tolerance on surface (degrees) 2 CRo@+p10  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 mCnl@  
Change in Focus                :       0.000000                            0.000000 8;qOsV)UDT  
Decenter X tolerance on surface 3 2_Lu0Yrg  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 :30daKo  
Change in Focus                :       0.000000                            0.000000 !IJ YaQ6z  
Decenter Y tolerance on surface 3 b|87=1^m[  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 D Z~036  
Change in Focus                :       0.000000                            0.000000 s3Bo'hGxG  
Tilt X tolerance on surface (degrees) 3 eF;Jj>\R+i  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 F~v0CBcAL  
Change in Focus                :       0.000000                            0.000000 pp|$y\ZzB  
Tilt Y tolerance on surface (degrees) 3 =>S[Dh  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 XyB_8(/E  
Change in Focus                :       0.000000                            0.000000 k6 OO\=  
Irregularity of surface 1 in fringes k'X"jon  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 vo#$xwm1  
Change in Focus                :       0.000000                            0.000000 *=md!^x`  
Irregularity of surface 2 in fringes c CjN8<  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ~p+ `pwjY1  
Change in Focus                :       0.000000                            0.000000 l )r^|9{  
Irregularity of surface 3 in fringes #}1yBxB<=  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 .5HD i-  
Change in Focus                :       0.000000                            0.000000 \HD:#a  
Index tolerance on surface 1 #+i5'p(4  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 *r4FOA%P  
Change in Focus                :       0.000000                            0.000000 iJZvVs',  
Index tolerance on surface 2 a"cw%L  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 bz:En'2>F  
Change in Focus                :       0.000000                           -0.000000 %M_F/O  
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Worst offenders: eLH=PDdO  
Type                      Value      Criterion        Change l(MjLXw5  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ;qz
n_W  
TSTY   2             0.20000000     0.35349910    -0.19053324 YxnZ0MY  
TSTX   2            -0.20000000     0.35349910    -0.19053324 5-4  
TSTX   2             0.20000000     0.35349910    -0.19053324 6=%\@  
TSTY   1            -0.20000000     0.42678383    -0.11724851 1< b~="  
TSTY   1             0.20000000     0.42678383    -0.11724851 ./tZ*sP:  
TSTX   1            -0.20000000     0.42678383    -0.11724851 
4[Ko|  
TSTX   1             0.20000000     0.42678383    -0.11724851 U*EBH  
TSTY   3            -0.20000000     0.42861670    -0.11541563 .Z`xNp  
TSTY   3             0.20000000     0.42861670    -0.11541563 lNe5{'OrO  
9r:|u:i7m  
Estimated Performance Changes based upon Root-Sum-Square method: Nn0j}ZI)1  
Nominal MTF                 :     0.54403234 s4Jy96<
 
Estimated change            :    -0.36299231 WM9({BZ  
Estimated MTF               :     0.18104003 $5#DU__F/  
aEEb1Y  
Compensator Statistics: [:izej(\  
Change in back focus: >of9m  
Minimum            :        -0.000000 ow+_g R-  
Maximum            :         0.000000 (Ms0pm-#t  
Mean               :        -0.000000 ^S|}<6~6b  
Standard Deviation :         0.000000 'K23oQwDB  
,=pn}\R  
Monte Carlo Analysis: B0g?!.#23  
Number of trials: 20 5rtE/{A  
\^cXmyQ<%  
Initial Statistics: Normal Distribution V
o%ikR #  
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  Trial       Criterion        Change (s+}l?  
      1     0.42804416    -0.11598818 ),,0T/69+9  
Change in Focus                :      -0.400171 Dz$dJF1 8  
      2     0.54384387    -0.00018847 G[d]t$f=  
Change in Focus                :       1.018470 M?m@o1\;W  
      3     0.44510003    -0.09893230 1Fsa}UK  
Change in Focus                :      -0.601922 IUG}Q7w5  
      4     0.18154684    -0.36248550 D;:p6q}hT  
Change in Focus                :       0.920681 bvl!^xO]  
      5     0.28665820    -0.25737414 =FAIbM>u  
Change in Focus                :       1.253875 z@<jZM  
      6     0.21263372    -0.33139862 !6 kn>447Y  
Change in Focus                :      -0.903878 #/t+h#jG  
      7     0.40051424    -0.14351809 r.]IGE|  
Change in Focus                :      -1.354815 L'e|D=y  
      8     0.48754161    -0.05649072 .8|"
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Change in Focus                :       0.215922 }?CKE<#%  
      9     0.40357468    -0.14045766 !%D;H~mQ  
Change in Focus                :       0.281783 R_80J=%0  
     10     0.26315315    -0.28087919 n482?Wp  
Change in Focus                :      -1.048393 FbCuXS=+`  
     11     0.26120585    -0.28282649 }+:X=@Z@  
Change in Focus                :       1.017611 gP ^A  
     12     0.24033815    -0.30369419 gP!k[E,Q8  
Change in Focus                :      -0.109292 Jg&f.  
     13     0.37164046    -0.17239188 a 4?c~bs  
Change in Focus                :      -0.692430 eV9,G8  
     14     0.48597489    -0.05805744 usU6,  
Change in Focus                :      -0.662040 4^^=^c  
     15     0.21462327    -0.32940907 Sq`Zu
u9t  
Change in Focus                :       1.611296 z>*\nomOn=  
     16     0.43378226    -0.11025008 ;Yt'$D*CP  
Change in Focus                :      -0.640081 Pp;OkI``[  
     17     0.39321881    -0.15081353 Q+IB&LdE  
Change in Focus                :       0.914906 ,H/BW`rL]#  
     18     0.20692530    -0.33710703 ,y)V5 c1  
Change in Focus                :       0.801607 _!yUr5&,Br  
     19     0.51374068    -0.03029165 =s:Z-*vy!  
Change in Focus                :       0.947293 *b`1+~p_2  
     20     0.38013374    -0.16389860 w
k2Ff*&  
Change in Focus                :       0.667010 4=njM`8Y'  
8wCB}qC  
Number of traceable Monte Carlo files generated: 20 ddlF4L_  
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Nominal     0.54403234 p3IhK>  
Best        0.54384387    Trial     2 Vzh\1cF  
Worst       0.18154684    Trial     4 cOdgBi  
Mean        0.35770970 !3ji]q;uF  
Std Dev     0.11156454 h\|T(597.  
2t3)$\ylQp  
Dyj>dh-  
Compensator Statistics: DNRWE1P2bg  
Change in back focus: 5"L.C32  
Minimum            :        -1.354815 G[zVGqk  
Maximum            :         1.611296 iG{xDj{CKv  
Mean               :         0.161872 i@ehD@.dH  
Standard Deviation :         0.869664 yh+.Yn=
+  
K*tomy  
90% >       0.20977951               ZkF6AF   
80% >       0.22748071               !dwa. lZ&X  
50% >       0.38667627               5~RR _G  
20% >       0.46553746               wd2z=^S~  
10% >       0.50064115                rrs0|=  
`dgZ`#  
End of Run. }Rq{9j,%  
Yo}QW;,g  
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 kq>I?wg  

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 V?n=yg  
@lCyH(c%  
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                 (P-$tHt  
80% >       0.22748071                 )Cd.1X8  
50% >       0.38667627                 9u%(9Ae  
20% >       0.46553746                 Fz
G>iC}  
10% >       0.50064115 XmN8S_M>v  
s13
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最后这个数值是MTF值呢，还是MTF的公差？ `pqTiV  

:a9  
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？？？   .Gb!mG  
dd*p_4;  
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  : J_?v=dW`  
90% >       0.20977951                 7*"Jx}eM  
80% >       0.22748071                 3#Bb4\_v  
50% >       0.38667627                 dqs~K7O^E  
20% >       0.46553746                 V1~@   
10% >       0.50064115 V@[C=K
  
....... Qj*.Z4ue  

*QV"o{V  
'C]Yh."u  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm  
6su~SPh  
Mode                : Sensitivities n,2   
Sampling            : 2 0Qq<h;8xEc  
Nominal Criterion   : 0.54403234 kwL|gO1L  
Test Wavelength     : 0.6328 Od)y4nr3~  
E2d'P  
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？ M/dgW`c  
{(!JYz~P  
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