[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 Sj;:*jk!h  
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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 1ifPc5j}  
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图片:2.jpg

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然后运行分析的结果如下： TYedem<$  
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Analysis of Tolerances 8cbgP$X  
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File : E:\光学设计资料\zemax练习\f500.ZMX mk +BeK  
Title: B0!W=T\  
Date : TUE JUN 21 2011 Tl*FK?)MC^  
_'P!>C!  
Units are Millimeters. ~ym-Szo  
All changes are computed using linear differences. "0{t~?ol  
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Paraxial Focus compensation only. SI;SnF'[7  
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WARNING: Solves should be removed prior to tolerancing. k5)e7Lb(  
C6c]M@6  
Mnemonics: MU~nvs;:  
TFRN: Tolerance on curvature in fringes. xJ)vfo  
TTHI: Tolerance on thickness. -;U3$[T,J7  
TSDX: Tolerance on surface decentering in x. ;%Zn)etu  
TSDY: Tolerance on surface decentering in y. }"AGX  
TSTX: Tolerance on surface tilt in x (degrees). nNcmL/
(  
TSTY: Tolerance on surface tilt in y (degrees). <9Pf] G=  
TIRR: Tolerance on irregularity (fringes). pAdSOR2  
TIND: Tolerance on Nd index of refraction. !S[7IBk%  
TEDX: Tolerance on element decentering in x. z*&r@P -  
TEDY: Tolerance on element decentering in y. ]39A1&af}  
TETX: Tolerance on element tilt in x (degrees). +#g?rCz  
TETY: Tolerance on element tilt in y (degrees). B#(2,j7M  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. =#{i;CC%  
8(0q,7)y  
WARNING: Boundary constraints on compensators will be ignored. VTxLBFK;  
30$Q5]T  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm O$ ;:5zT  
Mode                : Sensitivities 2~SjRIpUw  
Sampling            : 2 }\_[+@*EJ  
Nominal Criterion   : 0.54403234 !_=3Dz  
Test Wavelength     : 0.6328 P6o-H$ a+  
w7X], auRC  
DmgWIede|:  
Fields: XY Symmetric Angle in degrees r!J?Lc])8  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY kDr0D$iE  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 N;d@)h(N!  
(eJYv: ^  
Sensitivity Analysis: `Hq)g1a7q  
;&G8e*bM2  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| olO&7jh7|  
Type                      Value      Criterion        Change          Value      Criterion        Change ~85Pgb<  
Fringe tolerance on surface 1 rWMG_eP:  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \~bE|jWbj  
Change in Focus                :      -0.000000                            0.000000 p;m2RHYF  
Fringe tolerance on surface 2 (3+:/,{'$  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 1?bX$$yl;  
Change in Focus                :       0.000000                            0.000000 _<1uO=km6  
Fringe tolerance on surface 3 Um9]X@z  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 P(&9S`I  
Change in Focus                :      -0.000000                            0.000000 o`]u&  
Thickness tolerance on surface 1 FGG7;0(  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 y!?l;xMS  
Change in Focus                :       0.000000                            0.000000 -wj
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Thickness tolerance on surface 2 _oJq32  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 ?H_'L4Wv  
Change in Focus                :       0.000000                           -0.000000 %8lF%uu!x  
Decenter X tolerance on surfaces 1 through 3 -(fvb  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 RxVf:h'l  
Change in Focus                :       0.000000                            0.000000 T5+iX`#M  
Decenter Y tolerance on surfaces 1 through 3 s`:-6{E  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 aj<=]=hr  
Change in Focus                :       0.000000                            0.000000 \#; -C<[b  
Tilt X tolerance on surfaces 1 through 3 (degrees) "' hc)58y  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $}G03G@  
Change in Focus                :       0.000000                            0.000000 =?/RaK/ w  
Tilt Y tolerance on surfaces 1 through 3 (degrees) x\Det$3Kx  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 UR&Uwa&.  
Change in Focus                :       0.000000                            0.000000 2So7fZa^wg  
Decenter X tolerance on surface 1 5B'};AQ  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6T
5nr  
Change in Focus                :       0.000000                            0.000000 s]
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Decenter Y tolerance on surface 1 &k+'TcWm  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $6XCHVx  
Change in Focus                :       0.000000                            0.000000 jWd 7>1R?  
Tilt X tolerance on surface (degrees) 1 t%n3~i4X:  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {IW pI *  
Change in Focus                :       0.000000                            0.000000 `
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Tilt Y tolerance on surface (degrees) 1 =-c"~
4  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 4S]`S\w  
Change in Focus                :       0.000000                            0.000000 ;O2r
+n  
Decenter X tolerance on surface 2 e'c~;Z\A
 
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 FasA f(3  
Change in Focus                :       0.000000                            0.000000 ;@@1$mzK  
Decenter Y tolerance on surface 2 OwwlQp ~!J  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 FSqS]6b3  
Change in Focus                :       0.000000                            0.000000 O&!tW^ih  
Tilt X tolerance on surface (degrees) 2 ncluA~8  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 9@-^!DBM  
Change in Focus                :       0.000000                            0.000000 MU^7(s="  
Tilt Y tolerance on surface (degrees) 2 %<oey%ue  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~(xIG
 
Change in Focus                :       0.000000                            0.000000 uOqWMRsoi
 
Decenter X tolerance on surface 3 ,?+rM ;  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 $^Dx4:k<2  
Change in Focus                :       0.000000                            0.000000 mlR*S<Z  
Decenter Y tolerance on surface 3 szC~?]<YY  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _-*Lj;^V  
Change in Focus                :       0.000000                            0.000000 $e;_N4d^  
Tilt X tolerance on surface (degrees) 3 I-NzGx2u  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 JU7EC~7|2c  
Change in Focus                :       0.000000                            0.000000 i51
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Tilt Y tolerance on surface (degrees) 3 i!jZZj-{  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Eg?6$[U`8<  
Change in Focus                :       0.000000                            0.000000 ;(Q4x"?I  
Irregularity of surface 1 in fringes .,pGW8Js  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 $-$^r;  
Change in Focus                :       0.000000                            0.000000 xV'\2n=1T  
Irregularity of surface 2 in fringes )g:\N8AZK  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 n\}!'>d'  
Change in Focus                :       0.000000                            0.000000 |\j'Z0  
Irregularity of surface 3 in fringes SLL%XF~/Sb  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 H'E>QT  
Change in Focus                :       0.000000                            0.000000 CUT D]:\  
Index tolerance on surface 1 a[:0<Ek  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Vt:]D?\3  
Change in Focus                :       0.000000                            0.000000 LXaT_3;  
Index tolerance on surface 2 d_&R>GmR$  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 A e&t#,)  
Change in Focus                :       0.000000                           -0.000000 E8WOXoP(  
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Worst offenders: rS>JzbWa  
Type                      Value      Criterion        Change q28i9$Yqj\  
TSTY   2            -0.20000000     0.35349910    -0.19053324 0A@'w*=  
TSTY   2             0.20000000     0.35349910    -0.19053324 3~\mP\/4v  
TSTX   2            -0.20000000     0.35349910    -0.19053324 oQ=Q}  
TSTX   2             0.20000000     0.35349910    -0.19053324 ewqfs/  
TSTY   1            -0.20000000     0.42678383    -0.11724851 aE6I|6W
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TSTY   1             0.20000000     0.42678383    -0.11724851 T=}(S4n#BX  
TSTX   1            -0.20000000     0.42678383    -0.11724851 zR/d:P
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TSTX   1             0.20000000     0.42678383    -0.11724851 <jT6|2'  
TSTY   3            -0.20000000     0.42861670    -0.11541563 R74kt36M  
TSTY   3             0.20000000     0.42861670    -0.11541563 ^ad p<?q4  
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Estimated Performance Changes based upon Root-Sum-Square method: uh3%}2'P  
Nominal MTF                 :     0.54403234 W6D|Rr.q  
Estimated change            :    -0.36299231 _*1/4^  
Estimated MTF               :     0.18104003 Uu{I4ls6B  
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Compensator Statistics: Y25S:XHk9  
Change in back focus: [K;J#0V+&L  
Minimum            :        -0.000000 Qj?+R F6(  
Maximum            :         0.000000 _niXl&C  
Mean               :        -0.000000 |jV>  
Standard Deviation :         0.000000 A^_BK(EY  
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Monte Carlo Analysis: u-3A6Q  
Number of trials: 20 rIg1]q  
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Initial Statistics: Normal Distribution y~An'+yBa  
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  Trial       Criterion        Change y]aV7 `]  
      1     0.42804416    -0.11598818 ;sCf2TD,_  
Change in Focus                :      -0.400171 7jT]J  
      2     0.54384387    -0.00018847 N;7Xt9l  
Change in Focus                :       1.018470 zlZ$t{[,  
      3     0.44510003    -0.09893230 Rz1&(_Ps  
Change in Focus                :      -0.601922 wQ qI@  
      4     0.18154684    -0.36248550 yf+M  
Change in Focus                :       0.920681 *SQ hXTn  
      5     0.28665820    -0.25737414 )f9f_^;  
Change in Focus                :       1.253875 VS<E?JnbFV  
      6     0.21263372    -0.33139862 9S@PY_ms  
Change in Focus                :      -0.903878 ulV)X/]1  
      7     0.40051424    -0.14351809 jXkz,]Iy  
Change in Focus                :      -1.354815 Io*`hA]  
      8     0.48754161    -0.05649072 BB5(=n+  
Change in Focus                :       0.215922 0&2(1  
      9     0.40357468    -0.14045766 I.TdYSB  
Change in Focus                :       0.281783 EV| 6._Z(D  
     10     0.26315315    -0.28087919 $Zp\^cIE+  
Change in Focus                :      -1.048393 %mPIr4$Pg  
     11     0.26120585    -0.28282649 )
#zc$D^U  
Change in Focus                :       1.017611 = ;#?CAa:  
     12     0.24033815    -0.30369419 $5ZBNGr  
Change in Focus                :      -0.109292 z=B*s!G  
     13     0.37164046    -0.17239188 .ml24SeC  
Change in Focus                :      -0.692430 S\K;h/;V  
     14     0.48597489    -0.05805744 m8;; O  
Change in Focus                :      -0.662040 -hw^3Af  
     15     0.21462327    -0.32940907 MW8GM}Ho[  
Change in Focus                :       1.611296 9 o6ig>C  
     16     0.43378226    -0.11025008 nS)U+q-x&o  
Change in Focus                :      -0.640081 JsI`#  
     17     0.39321881    -0.15081353 6/Y3#d  
Change in Focus                :       0.914906 HtB>
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     18     0.20692530    -0.33710703 Hj't.lg+j  
Change in Focus                :       0.801607 Y%y=  
     19     0.51374068    -0.03029165 )WavG1  
Change in Focus                :       0.947293 p'fq&a+  
     20     0.38013374    -0.16389860 `"zXf-qeE  
Change in Focus                :       0.667010 +<7~yZ[Z8  
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Number of traceable Monte Carlo files generated: 20 ?U.+SQ  
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Nominal     0.54403234 9HrT>{@  
Best        0.54384387    Trial     2 FIhq>L.q4  
Worst       0.18154684    Trial     4 HpY-7QTPJ~  
Mean        0.35770970 S[(Tpk2_  
Std Dev     0.11156454 U;u
@\E@2  
UZ7Zzc#g  
Jt5\  
Compensator Statistics: @dei}!e  
Change in back focus: m/uBM6
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Minimum            :        -1.354815 NovF?kh2  
Maximum            :         1.611296 ,Bax0p  
Mean               :         0.161872 P}hHx<L  
Standard Deviation :         0.869664 LdnHz#  
QG {KEj2V  
90% >       0.20977951              
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80% >       0.22748071              
=n.d'  
50% >       0.38667627               %0l'Nuz  
20% >       0.46553746               b>SG5EqU@  
10% >       0.50064115                KGb:NQ=O6i  
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End of Run. koDIxj'%X  
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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 Qc1NLU9:  

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 1) 7n (  
{2"8^;  
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                 j'L/eps?S  
80% >       0.22748071                 P;~`%,+S  
50% >       0.38667627                 >}~\*Y\8@  
20% >       0.46553746                 s"OP[YEke/  
10% >       0.50064115 rK` x<  
v9*ugu[K9  
最后这个数值是MTF值呢，还是MTF的公差？ HKB?G~  
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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？？？   H){}28dX  
RBOb/.$  
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  : ]5O]=^ u0  
90% >       0.20977951                 PyoIhe&ep  
80% >       0.22748071                 >d3`\(v-  
50% >       0.38667627                 ]?7q%7-e.a  
20% >       0.46553746                 nl-y0xD9c  
10% >       0.50064115 Cut7  
....... eH_< <Xh!v  

29HyeLB@  
ID]E3K  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   5S*aZ1t18  
Mode                : Sensitivities +-!2nk`"a  
Sampling            : 2 `F$lO2#k  
Nominal Criterion   : 0.54403234 ]]NTvr  
Test Wavelength     : 0.6328 l4>c  
m%cwhH_B  
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？ <Gna}ALkg  
+!K*FU=).  
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