[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 <+2M,fq+  
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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 U3zwC5}BN  
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图片:2.jpg

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然后运行分析的结果如下： rBUdHd9  
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Analysis of Tolerances "0yO~;a  
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File : E:\光学设计资料\zemax练习\f500.ZMX WF{rrU:  
Title: !b+/zXp3I
 
Date : TUE JUN 21 2011 ctg[C$<q|  
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Units are Millimeters. hiN6]jL|O  
All changes are computed using linear differences. 1vF^<{%v  
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Paraxial Focus compensation only. e2?7>?  
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WARNING: Solves should be removed prior to tolerancing. M6+_Mi.  
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Mnemonics: 5YG?m{hyn_  
TFRN: Tolerance on curvature in fringes. -r!N; s$t  
TTHI: Tolerance on thickness. LOkNDmj  
TSDX: Tolerance on surface decentering in x. b6k'`vLA  
TSDY: Tolerance on surface decentering in y. fem>WPvG  
TSTX: Tolerance on surface tilt in x (degrees). oKJj?%dHK9  
TSTY: Tolerance on surface tilt in y (degrees). ^BruRgc+  
TIRR: Tolerance on irregularity (fringes). p7A&r:qq#  
TIND: Tolerance on Nd index of refraction. ttwfWfX  
TEDX: Tolerance on element decentering in x. i-b++R/WN  
TEDY: Tolerance on element decentering in y. hl[!4#b]K  
TETX: Tolerance on element tilt in x (degrees). HZ1e~IIw  
TETY: Tolerance on element tilt in y (degrees). P*#H]Pv  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. [8VB"{{&  
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WARNING: Boundary constraints on compensators will be ignored. n~#%>C
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l(T CF  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm C NNyz$  
Mode                : Sensitivities 2B# ]z  
Sampling            : 2 /l,V0+p  
Nominal Criterion   : 0.54403234 ( *(#;|m  
Test Wavelength     : 0.6328 ~7W?W<  
CE$c/d[N.  
DFz,>DM;  
Fields: XY Symmetric Angle in degrees 0wLu*K5$4E  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY \S)\~>.`y!  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 u(7PtmV[!  
aMSX"N"ot  
Sensitivity Analysis: _U.D*f<3)  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| t]~Lo3  
Type                      Value      Criterion        Change          Value      Criterion        Change HXTB
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Fringe tolerance on surface 1 99@uU[&IJ  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 8Vkw vc  
Change in Focus                :      -0.000000                            0.000000 3%]%c6  
Fringe tolerance on surface 2 JRkC~fv  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 SsDe\"?Q  
Change in Focus                :       0.000000                            0.000000 x?:[:Hf   
Fringe tolerance on surface 3 &k /uR;yw  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 {q%wr*  
Change in Focus                :      -0.000000                            0.000000  $&96qsr  
Thickness tolerance on surface 1 P"J(O<(1-:  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Lt+ Cm$3  
Change in Focus                :       0.000000                            0.000000 0Ii* "?s  
Thickness tolerance on surface 2 %X Jv;|  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 3[E3]]OVa  
Change in Focus                :       0.000000                           -0.000000 C:/O]slH  
Decenter X tolerance on surfaces 1 through 3 gRS}Y8  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 TKpka]nJ  
Change in Focus                :       0.000000                            0.000000 Sni Ck*T,  
Decenter Y tolerance on surfaces 1 through 3 .v36xXK(  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 XO+^q9  
Change in Focus                :       0.000000                            0.000000 4tR:O#($V  
Tilt X tolerance on surfaces 1 through 3 (degrees) (PjC]`FK  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ZR<T\w  
Change in Focus                :       0.000000                            0.000000 Kv'2^B  
Tilt Y tolerance on surfaces 1 through 3 (degrees) JzJS?ZF  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0b9;vlGq$  
Change in Focus                :       0.000000                            0.000000 <=A1d\   
Decenter X tolerance on surface 1 _ji"##K  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 3%Z:B8:<y  
Change in Focus                :       0.000000                            0.000000 ~6z<tyD^  
Decenter Y tolerance on surface 1 ,y}?Z8?63  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671
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Change in Focus                :       0.000000                            0.000000 3~~KtH=  
Tilt X tolerance on surface (degrees) 1 'c3P3`o,;  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Yy6Mkw7X  
Change in Focus                :       0.000000                            0.000000 aA?Uf~ "t  
Tilt Y tolerance on surface (degrees) 1 FUic
7>  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ufE;rcYE  
Change in Focus                :       0.000000                            0.000000 .5*h']iFr1  
Decenter X tolerance on surface 2 fr$E'+l)  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 zdFO&YHTw  
Change in Focus                :       0.000000                            0.000000 ct+ ;W  
Decenter Y tolerance on surface 2 p]/HZS.-b  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,
U+y)w]ar  
Change in Focus                :       0.000000                            0.000000 C?jk#T  
Tilt X tolerance on surface (degrees) 2 MaDdiyeC  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 &<}vs`W  
Change in Focus                :       0.000000                            0.000000 K' xN>qc  
Tilt Y tolerance on surface (degrees) 2 DD`Bl1)  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 e^)+bmh  
Change in Focus                :       0.000000                            0.000000  #nV F.  
Decenter X tolerance on surface 3 Umx~!YL!  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4RCD<7  
Change in Focus                :       0.000000                            0.000000 ^'j? {@  
Decenter Y tolerance on surface 3 kR2kV"-l  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 jC3ta  
Change in Focus                :       0.000000                            0.000000 ocCq$%Ka  
Tilt X tolerance on surface (degrees) 3 ME"B1Se\  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 U.]5UP:a  
Change in Focus                :       0.000000                            0.000000 Y;$wD9W  
Tilt Y tolerance on surface (degrees) 3 LT7C>b  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0$)uOUVJ  
Change in Focus                :       0.000000                            0.000000 :.wR*E  
Irregularity of surface 1 in fringes eT33&:n4  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 !n9H[QP^9  
Change in Focus                :       0.000000                            0.000000 `|maf=SnY5  
Irregularity of surface 2 in fringes THC7e>P4  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Fk(nf9M%  
Change in Focus                :       0.000000                            0.000000 {j$:9  H  
Irregularity of surface 3 in fringes t5: 1' N9P  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 hKVj\88  
Change in Focus                :       0.000000                            0.000000 \)KLm  
Index tolerance on surface 1 N 4Kj)E@  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 \*x'7c/qg  
Change in Focus                :       0.000000                            0.000000 !C13E lf  
Index tolerance on surface 2 e ]-fb{oVH  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 H_w&_h&  
Change in Focus                :       0.000000                           -0.000000 j#:IG/)GL  
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Worst offenders: +i"^"/2f{  
Type                      Value      Criterion        Change .V~z6  
TSTY   2            -0.20000000     0.35349910    -0.19053324 v@m2c_,  
TSTY   2             0.20000000     0.35349910    -0.19053324 =PU!hZj"L  
TSTX   2            -0.20000000     0.35349910    -0.19053324 @ sLb=vb  
TSTX   2             0.20000000     0.35349910    -0.19053324 z~8`xn,  
TSTY   1            -0.20000000     0.42678383    -0.11724851 X5[.X()M4  
TSTY   1             0.20000000     0.42678383    -0.11724851 d$DNiJ ,  
TSTX   1            -0.20000000     0.42678383    -0.11724851 dsJMhB_41U  
TSTX   1             0.20000000     0.42678383    -0.11724851 >3aB{[[N  
TSTY   3            -0.20000000     0.42861670    -0.11541563 MTI[Mez  
TSTY   3             0.20000000     0.42861670    -0.11541563 p>Z18  
CMu/n]?c  
Estimated Performance Changes based upon Root-Sum-Square method: )W,tL*9[  
Nominal MTF                 :     0.54403234 |E]`rfr  
Estimated change            :    -0.36299231 ^w|D^F=o  
Estimated MTF               :     0.18104003 }EJAC*W,  
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Compensator Statistics: dgbqMu"  
Change in back focus: ?7;_3+T#  
Minimum            :        -0.000000 HN
XMM  
Maximum            :         0.000000 'xK ,|U  
Mean               :        -0.000000 eMT}"u8$A  
Standard Deviation :         0.000000 hCpX#rg?  
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Monte Carlo Analysis: Y8i'=Po%,  
Number of trials: 20 9:\#GOg  
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Initial Statistics: Normal Distribution 3lh^maQ]  
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  Trial       Criterion        Change n]nb+_-97  
      1     0.42804416    -0.11598818 V^S` d8?  
Change in Focus                :      -0.400171 i>elK<R4  
      2     0.54384387    -0.00018847 VbU*&{j  
Change in Focus                :       1.018470 ^RIDC/B=V6  
      3     0.44510003    -0.09893230 s?j||  
Change in Focus                :      -0.601922 [B_(,/?  
      4     0.18154684    -0.36248550 au+6ook
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Change in Focus                :       0.920681 Aq]*$s2\G  
      5     0.28665820    -0.25737414 I_.Jo `lK~  
Change in Focus                :       1.253875 KkK !E  
      6     0.21263372    -0.33139862 Uo]x6j<  
Change in Focus                :      -0.903878 b^s>yN  
      7     0.40051424    -0.14351809 U
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Change in Focus                :      -1.354815 6}/m~m  
      8     0.48754161    -0.05649072 ;NoD4*  
Change in Focus                :       0.215922 !C6[m1F  
      9     0.40357468    -0.14045766 W)LtnD2 w  
Change in Focus                :       0.281783 sUe<21:  
     10     0.26315315    -0.28087919 W{!Slf  
Change in Focus                :      -1.048393 zZE@:P&lf  
     11     0.26120585    -0.28282649 wJ>.I<F6B  
Change in Focus                :       1.017611 GZx?vSoHh  
     12     0.24033815    -0.30369419 KlbUs\E  
Change in Focus                :      -0.109292 eVvDis  
     13     0.37164046    -0.17239188 yt5'2!jc  
Change in Focus                :      -0.692430 L"x9O'U  
     14     0.48597489    -0.05805744 uP.[,V0@^  
Change in Focus                :      -0.662040 ^MczumG[  
     15     0.21462327    -0.32940907 Ld4Jp`Zg  
Change in Focus                :       1.611296 [g Y.h/  
     16     0.43378226    -0.11025008 Om,M8!E  
Change in Focus                :      -0.640081 ~IQ2;

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     17     0.39321881    -0.15081353 }uo.N  
Change in Focus                :       0.914906 S(NUuu}S  
     18     0.20692530    -0.33710703 w+Oo-AGNH  
Change in Focus                :       0.801607 gPf^dGi7t  
     19     0.51374068    -0.03029165 8]2j*e0xV  
Change in Focus                :       0.947293 Y'9<fSn5&  
     20     0.38013374    -0.16389860 d>bS)  
Change in Focus                :       0.667010 egHvI&w"o  
iS#m{1m$$  
Number of traceable Monte Carlo files generated: 20 Kc#42C;t/  
y&(R1Y75  
Nominal     0.54403234 6v(;dolBIw  
Best        0.54384387    Trial     2 
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Worst       0.18154684    Trial     4 Op 0Qpn  
Mean        0.35770970 EG oe<.  
Std Dev     0.11156454 k<.VR"I p  
*
#&s+h,^  
Z.{r%W{2  
Compensator Statistics: R2B0?fu  
Change in back focus: jHx)q|2\  
Minimum            :        -1.354815 1 GB  
Maximum            :         1.611296 Zt{\<5j  
Mean               :         0.161872 $?Yw{%W  
Standard Deviation :         0.869664 Q"D%
xY  
KOP*\\1 J  
90% >       0.20977951               yq,%ey8  
80% >       0.22748071               O ]Stf7]%;  
50% >       0.38667627               $@}\T  
20% >       0.46553746               ,].S~6IM  
10% >       0.50064115                FZJyqqA$_  
L\/YS;Y  
End of Run. P%^\<#Ya7  
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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 (U@uJ  

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 H>Ws)aCq  
KRN{Ath.  
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                 -ipfGb  
80% >       0.22748071                 {aRZBIv  
50% >       0.38667627                 X/!37  
20% >       0.46553746                 oL69w1  
10% >       0.50064115 :.,3Zw{l  
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最后这个数值是MTF值呢，还是MTF的公差？ FII>6c  
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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？？？   mK2M1r  
r31H Zx1^  
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  : %KeQp W  
90% >       0.20977951                 X^#.4:>.  
80% >       0.22748071                 *mM+(]8US  
50% >       0.38667627                 'U)|m  
20% >       0.46553746                 xy%lp{  
10% >       0.50064115 u_o>v{&i  
....... <:u)C;  

#lax0IYY=  
A}#@(ma7  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   xXK7i\ny  
Mode                : Sensitivities fV3!x,H  
Sampling            : 2 P,!k^J3:l  
Nominal Criterion   : 0.54403234 4];Qpln  
Test Wavelength     : 0.6328 $7
aRf'  
AQ-P3`bCb  
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？ )^)VyI`O  
4aAr|!8|h!  
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