[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 b'y%n  
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然后添加了默认公差分析，基本没变 i@q&5;%%  
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然后运行分析的结果如下： }b}m3i1  
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Analysis of Tolerances z{543~Og59  
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File : E:\光学设计资料\zemax练习\f500.ZMX zqku e%^?-  
Title: Zfw,7am/  
Date : TUE JUN 21 2011 vI?, 47Hj+  
f^e)O$N9]  
Units are Millimeters. y} '@R$  
All changes are computed using linear differences.
>lm&iF3y  
zCA2X !7F  
Paraxial Focus compensation only. K:M8h{Ua  
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WARNING: Solves should be removed prior to tolerancing. yauvXosX  
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Mnemonics: /QQ*8o8  
TFRN: Tolerance on curvature in fringes. ^ 9sjj  
TTHI: Tolerance on thickness. jdN`mosJ  
TSDX: Tolerance on surface decentering in x. =wJX0A|  
TSDY: Tolerance on surface decentering in y. F@t3!bj9  
TSTX: Tolerance on surface tilt in x (degrees). ,6/V"kqIP  
TSTY: Tolerance on surface tilt in y (degrees). f<_Cq<q"  
TIRR: Tolerance on irregularity (fringes).
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TIND: Tolerance on Nd index of refraction. R_KH"`q  
TEDX: Tolerance on element decentering in x. Wqnc{oq|$  
TEDY: Tolerance on element decentering in y. r%_djUd  
TETX: Tolerance on element tilt in x (degrees). :s,Z<^5a)g  
TETY: Tolerance on element tilt in y (degrees). [^)g%|W  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. kM6 Qp  
m
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WARNING: Boundary constraints on compensators will be ignored. GdwVtqbX  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm =l6mL+C  
Mode                : Sensitivities J,hCvm  
Sampling            : 2 EnR}IY&sI  
Nominal Criterion   : 0.54403234 M}a6Vu9  
Test Wavelength     : 0.6328 {ax:RUQxy  
Z;i:](  
w]H->B29C  
Fields: XY Symmetric Angle in degrees H|*m$|$,  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~&T~1xsFJ  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 b 6p|q_e  
bOB\--:]  
Sensitivity Analysis: .>S!ji  
r$1Qf}J3=  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| KXy6Eno  
Type                      Value      Criterion        Change          Value      Criterion        Change _-D{-
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Fringe tolerance on surface 1 yfSmDPh  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 D-c4EV  
Change in Focus                :      -0.000000                            0.000000 ]lbuy7xj63  
Fringe tolerance on surface 2 8y L Y  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Z r8*et  
Change in Focus                :       0.000000                            0.000000 y `UaB3q  
Fringe tolerance on surface 3 P?\6@_ Z  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 M7T5 ~/4  
Change in Focus                :      -0.000000                            0.000000 bsX[UF
  
Thickness tolerance on surface 1 ,hVli/   
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 zdYjF|  
Change in Focus                :       0.000000                            0.000000 8r{.jFGv  
Thickness tolerance on surface 2 KwS@D9bok  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 +R&gqja  
Change in Focus                :       0.000000                           -0.000000 vt8By@]:  
Decenter X tolerance on surfaces 1 through 3 l;Wj]  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 X, n:,'  
Change in Focus                :       0.000000                            0.000000 JI}'dU>*U:  
Decenter Y tolerance on surfaces 1 through 3 NOva'qk  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 gJXaPJA{  
Change in Focus                :       0.000000                            0.000000 DI>s-7  
Tilt X tolerance on surfaces 1 through 3 (degrees) 29KiuP  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;`&kZi60Hz  
Change in Focus                :       0.000000                            0.000000 \e;iT\=.(  
Tilt Y tolerance on surfaces 1 through 3 (degrees) <YY14p  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 u_enqC3  
Change in Focus                :       0.000000                            0.000000 w>gYx(8b  
Decenter X tolerance on surface 1 a9gLg &  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]DcFySyv  
Change in Focus                :       0.000000                            0.000000 X8|,   
Decenter Y tolerance on surface 1 i@yC-))bY  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 wT@og|M  
Change in Focus                :       0.000000                            0.000000 pP_LR ks}  
Tilt X tolerance on surface (degrees) 1 p+eh%2Jm  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 6Oq7#3]  
Change in Focus                :       0.000000                            0.000000 )e{aN+  
Tilt Y tolerance on surface (degrees) 1 5+vaE 2v  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 )8AXm  
Change in Focus                :       0.000000                            0.000000 I,tud
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Decenter X tolerance on surface 2 w:0E(z  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 iTwm3V P  
Change in Focus                :       0.000000                            0.000000 Y4-t7UlS;  
Decenter Y tolerance on surface 2 +>,I1{u%&  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _)8s'MjA:&  
Change in Focus                :       0.000000                            0.000000 ;uJMG  
Tilt X tolerance on surface (degrees) 2 P0@,fd<  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  R&&4y 7  
Change in Focus                :       0.000000                            0.000000 V!
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Tilt Y tolerance on surface (degrees) 2 ~$'awY  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324
];m_4  
Change in Focus                :       0.000000                            0.000000 L0,'m
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Decenter X tolerance on surface 3 ?< +WG/(d  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 aN?zmkPpov  
Change in Focus                :       0.000000                            0.000000 [JiH\+XLPs  
Decenter Y tolerance on surface 3 qGo.WZ$  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1zv'.uu.,  
Change in Focus                :       0.000000                            0.000000 4RO}<$Nx}  
Tilt X tolerance on surface (degrees) 3 i5Ggf"![  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 la!~\wpa  
Change in Focus                :       0.000000                            0.000000 G{}VPcrbC  
Tilt Y tolerance on surface (degrees) 3 "jZ-,P=  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 FrS]|=LJhX  
Change in Focus                :       0.000000                            0.000000 M3\AY30L  
Irregularity of surface 1 in fringes o-5TC  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 [,Gg^*umS  
Change in Focus                :       0.000000                            0.000000 ,+k\p5P  
Irregularity of surface 2 in fringes HPl<%%TI  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 [0!(xp^  
Change in Focus                :       0.000000                            0.000000 %b$>qW\*&  
Irregularity of surface 3 in fringes ZK,G v  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 j#|ZP-=1_  
Change in Focus                :       0.000000                            0.000000 4?kcv59  
Index tolerance on surface 1 oA 1yIp  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 e'~3oqSvR  
Change in Focus                :       0.000000                            0.000000 }bxs]?OW>  
Index tolerance on surface 2 r!v\"6:OM  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 (PLUF
T  
Change in Focus                :       0.000000                           -0.000000 6K^#?Bn;  
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Worst offenders: Q &
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Type                      Value      Criterion        Change e~OpofJNb  
TSTY   2            -0.20000000     0.35349910    -0.19053324 Jy)/%p~  
TSTY   2             0.20000000     0.35349910    -0.19053324 sJZiI}Xc  
TSTX   2            -0.20000000     0.35349910    -0.19053324 f*Hr^b}`8  
TSTX   2             0.20000000     0.35349910    -0.19053324 /~1+i'7V.,  
TSTY   1            -0.20000000     0.42678383    -0.11724851 )~>YH*g  
TSTY   1             0.20000000     0.42678383    -0.11724851 3o*YzwRt  
TSTX   1            -0.20000000     0.42678383    -0.11724851 )0
`C@um  
TSTX   1             0.20000000     0.42678383    -0.11724851 \bXa&Lq  
TSTY   3            -0.20000000     0.42861670    -0.11541563 10&8-p1/mc  
TSTY   3             0.20000000     0.42861670    -0.11541563 Rq-ZL{LR7  
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Estimated Performance Changes based upon Root-Sum-Square method: /vt3>d%B;  
Nominal MTF                 :     0.54403234 z{q`GwW  
Estimated change            :    -0.36299231 awRX1:T#;O  
Estimated MTF               :     0.18104003 }e1ZbmW  
~%oR[B7=|  
Compensator Statistics: P55fL-vo|}  
Change in back focus: HS$r8`S?)  
Minimum            :        -0.000000 '/p4O2b,  
Maximum            :         0.000000 gGYKEq{j(  
Mean               :        -0.000000 T{"(\X$  
Standard Deviation :         0.000000 kZ~~/?B  
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Monte Carlo Analysis: y =@N|f!  
Number of trials: 20 6)J#OKZ  
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Initial Statistics: Normal Distribution ]~-r}`]  
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  Trial       Criterion        Change KvSG;  
      1     0.42804416    -0.11598818 |Tw~@kT@  
Change in Focus                :      -0.400171 jPeYmv]
  
      2     0.54384387    -0.00018847 x-c"%Z|  
Change in Focus                :       1.018470 :UdF  
      3     0.44510003    -0.09893230 ICCc./l|  
Change in Focus                :      -0.601922 ~&O%N  
      4     0.18154684    -0.36248550 G}*hM$F  
Change in Focus                :       0.920681 *hrd5na  
      5     0.28665820    -0.25737414 1YA% -~  
Change in Focus                :       1.253875 BUFv|z+H  
      6     0.21263372    -0.33139862 hZ3bVi)L\  
Change in Focus                :      -0.903878 ysN3  
      7     0.40051424    -0.14351809 9mgIUjz  
Change in Focus                :      -1.354815 G3]4A&h9v~  
      8     0.48754161    -0.05649072 13PS2  
Change in Focus                :       0.215922 )jj0^f1!j  
      9     0.40357468    -0.14045766 oU|c
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Change in Focus                :       0.281783 0x7'^Z>-oe  
     10     0.26315315    -0.28087919 3T 9j@N77  
Change in Focus                :      -1.048393 TC. ,V_  
     11     0.26120585    -0.28282649 R]dg_Da  
Change in Focus                :       1.017611 ex|F|0k4}  
     12     0.24033815    -0.30369419 Cw%{G'O  
Change in Focus                :      -0.109292 fM}#ON>Z  
     13     0.37164046    -0.17239188 ?"FbsMk.d  
Change in Focus                :      -0.692430 .hiSw  
     14     0.48597489    -0.05805744 tkhCw/  
Change in Focus                :      -0.662040 5f/`Q   
     15     0.21462327    -0.32940907 e)ZUO_Q$  
Change in Focus                :       1.611296 >/\'zi]L  
     16     0.43378226    -0.11025008 wzaV;ac4K  
Change in Focus                :      -0.640081 Mtv?
:q  
     17     0.39321881    -0.15081353 $(9U@N9E  
Change in Focus                :       0.914906 U.TA^S]`g  
     18     0.20692530    -0.33710703 Jwp7gYZ  
Change in Focus                :       0.801607 pp2~Meg  
     19     0.51374068    -0.03029165 \9d$@V  
Change in Focus                :       0.947293 Q&&@v4L  
     20     0.38013374    -0.16389860 edV\-H5<  
Change in Focus                :       0.667010 f)!Z~t &  
{$r[5%L\H  
Number of traceable Monte Carlo files generated: 20 ;=@0'xPEa-  
ddo#P%sH'  
Nominal     0.54403234 DMS!a$4  
Best        0.54384387    Trial     2 eQ"E  
Worst       0.18154684    Trial     4 +RXoi2"-q@  
Mean        0.35770970 IB<d  
Std Dev     0.11156454 M;NX:mX9  
k8Xm n6X  
HThcn1u~^b  
Compensator Statistics: 7KPwQ?SjT  
Change in back focus: YP9^Bp{0  
Minimum            :        -1.354815 .2pK.$.  
Maximum            :         1.611296 ;
]fs'LH  
Mean               :         0.161872 .-=vx 
r  
Standard Deviation :         0.869664 xpI wrJO  
.o8t+X'G  
90% >       0.20977951               KgG4*<  
80% >       0.22748071               V:27)]q  
50% >       0.38667627               nie%eC&U  
20% >       0.46553746               ExM,g'7  
10% >       0.50064115                PX99uWx5]  
`kr?j:g
 
End of Run. uocGbi:V';  
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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 nd(S3rct&  
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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 {|\.i  
4~=l}H>&  
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                 T^v}mWCZ  
80% >       0.22748071                 -(#iIgmP  
50% >       0.38667627                 F>cv<l =6l  
20% >       0.46553746                 N?>vd*  
10% >       0.50064115 /=, nGk>  
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最后这个数值是MTF值呢，还是MTF的公差？ @R  6@]Dm  
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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？？？   e$pV%5=  
e]tDy0@  
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  : C=4Qlt[`  
90% >       0.20977951                 u4|$bbig  
80% >       0.22748071                 <kd1Nrr!p  
50% >       0.38667627                 BFJnV.0M!  
20% >       0.46553746                 FtC^5{V+V  
10% >       0.50064115 8&Y^""#e)  
....... k,F6Tx  

*U\`CXn;  
f8.gT49I  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   DXK}-4"\  
Mode                : Sensitivities @<]Ekkg  
Sampling            : 2 '1)$'
 
Nominal Criterion   : 0.54403234 Y0K[Sm>  
Test Wavelength     : 0.6328 'W,jMju  
B\:%ufd ~  
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？ &wE%<"aRAl  
2eol gXp  
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