[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 tYk!Y/O}  
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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 51Q m2,P1^  
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图片:2.jpg

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然后运行分析的结果如下： ;xQNa}"V  
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Analysis of Tolerances :AYhBhitC  
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File : E:\光学设计资料\zemax练习\f500.ZMX .dO8I/lhV  
Title: -FGM>~x  
Date : TUE JUN 21 2011 *mjPNp'3{m  
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Units are Millimeters. M->
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All changes are computed using linear differences.
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Paraxial Focus compensation only. !Pc&Sg  
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WARNING: Solves should be removed prior to tolerancing. Z4s+8cTHn  
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Mnemonics: o6/"IIso3  
TFRN: Tolerance on curvature in fringes. EGysA{o"X  
TTHI: Tolerance on thickness. NyR,@n1  
TSDX: Tolerance on surface decentering in x. 9q]n&5  
TSDY: Tolerance on surface decentering in y. ]J^/`gc  
TSTX: Tolerance on surface tilt in x (degrees). \#sdN#e;XA  
TSTY: Tolerance on surface tilt in y (degrees). 7SJbrOL4Q-  
TIRR: Tolerance on irregularity (fringes). wM1&_%N  
TIND: Tolerance on Nd index of refraction. C7=N
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TEDX: Tolerance on element decentering in x. =1+/`w  
TEDY: Tolerance on element decentering in y. <]f{X<ef  
TETX: Tolerance on element tilt in x (degrees). ~Z:)Y*  
TETY: Tolerance on element tilt in y (degrees). @:Emmzucv|  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. P}=U #AV4  
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WARNING: Boundary constraints on compensators will be ignored. g-4j1yJV<  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm .x'?&7#(  
Mode                : Sensitivities p|>m 2(|  
Sampling            : 2 nt_FqUJ  
Nominal Criterion   : 0.54403234 +yI2G! $T9  
Test Wavelength     : 0.6328 >+9:31p  
pCC3r t(  
p5aqlYb6r  
Fields: XY Symmetric Angle in degrees -)Hc^'.  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY :X}fXgeL  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 D!V~g72j  
^6QzaC3  
Sensitivity Analysis: `O]$FpO  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| L0;XzZS  
Type                      Value      Criterion        Change          Value      Criterion        Change j;J`PH  
Fringe tolerance on surface 1 - VdCj%r>  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ~wQ M ?h  
Change in Focus                :      -0.000000                            0.000000 M=54xTh0Y  
Fringe tolerance on surface 2 NpH9},1i  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 :;jRAjq"  
Change in Focus                :       0.000000                            0.000000 kjF4c6v  
Fringe tolerance on surface 3 TF?~vS%@P  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 K SJ Ko  
Change in Focus                :      -0.000000                            0.000000 '?Xf(6o1  
Thickness tolerance on surface 1 5fy{!  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 NQcNY=  
Change in Focus                :       0.000000                            0.000000 aZ8f>t1Q  
Thickness tolerance on surface 2 c-**~tb(  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 B9wQ;[gQB  
Change in Focus                :       0.000000                           -0.000000 T>|Y_3YO_a  
Decenter X tolerance on surfaces 1 through 3 N,
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TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 x~ID[  
Change in Focus                :       0.000000                            0.000000 u s8.nL/  
Decenter Y tolerance on surfaces 1 through 3 Gi\Z"MiBZ  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8~sC$sIlE  
Change in Focus                :       0.000000                            0.000000 >*EJ6FPO  
Tilt X tolerance on surfaces 1 through 3 (degrees) Rh%A^j@  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +k V$ @qH  
Change in Focus                :       0.000000                            0.000000 JfRLq
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Tilt Y tolerance on surfaces 1 through 3 (degrees) ?e\u_3-9  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314
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Change in Focus                :       0.000000                            0.000000 q ,+29  
Decenter X tolerance on surface 1 Y?- "HK:  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 a@-bw4SD  
Change in Focus                :       0.000000                            0.000000 3G'cDemc  
Decenter Y tolerance on surface 1  &\ K  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;B!p4hu  
Change in Focus                :       0.000000                            0.000000 I#'yy7J  
Tilt X tolerance on surface (degrees) 1 +R_s(2vz  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {I/t3.R`  
Change in Focus                :       0.000000                            0.000000 d4)0G-|  
Tilt Y tolerance on surface (degrees) 1 "5v^6R9e  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 L
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Change in Focus                :       0.000000                            0.000000 b#*"eZj
 
Decenter X tolerance on surface 2 })j N 8px  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >`<qa!9  
Change in Focus                :       0.000000                            0.000000 $h[Q}uW  
Decenter Y tolerance on surface 2 U,lO{J
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TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 z'*{V\  
Change in Focus                :       0.000000                            0.000000 y(O~=S+<  
Tilt X tolerance on surface (degrees) 2 /4}y2JVv)  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 -"I9`  
Change in Focus                :       0.000000                            0.000000 jhkXU+4  
Tilt Y tolerance on surface (degrees) 2 4
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TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 @+a}O  
Change in Focus                :       0.000000                            0.000000 nd[Ja_h  
Decenter X tolerance on surface 3 GcG$>&,  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Z*IW*f&0>1  
Change in Focus                :       0.000000                            0.000000 1k`gr&S  
Decenter Y tolerance on surface 3 1@9M[_<n5  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >*\yEH9"  
Change in Focus                :       0.000000                            0.000000 mC3:P5/c  
Tilt X tolerance on surface (degrees) 3 D~M*]&  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 f ~bgZ  
Change in Focus                :       0.000000                            0.000000 h gu\~}kD  
Tilt Y tolerance on surface (degrees) 3 ^])s\a$  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 t#%J=zF{  
Change in Focus                :       0.000000                            0.000000 !}sF#  
Irregularity of surface 1 in fringes v5&W)F  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 N36B*9m&p  
Change in Focus                :       0.000000                            0.000000 cM\BEhh  
Irregularity of surface 2 in fringes Kw2]J)TO
 
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ENI|e,'[  
Change in Focus                :       0.000000                            0.000000 )-h{0o  
Irregularity of surface 3 in fringes ]=59_bkD:s  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 9i D&y)$"  
Change in Focus                :       0.000000                            0.000000 E(&zH;?_  
Index tolerance on surface 1 [[xnp;-;  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 h>p,r\X  
Change in Focus                :       0.000000                            0.000000 ],vid1E  
Index tolerance on surface 2 V{~~8b1E  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 _#uRKy<`N  
Change in Focus                :       0.000000                           -0.000000 HBs 6:[q  
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Worst offenders: k=G c#SD5_  
Type                      Value      Criterion        Change _Fe=:q  
TSTY   2            -0.20000000     0.35349910    -0.19053324 V;Q@'<w  
TSTY   2             0.20000000     0.35349910    -0.19053324 MP.ye|i4Q  
TSTX   2            -0.20000000     0.35349910    -0.19053324 @!|h!p;  
TSTX   2             0.20000000     0.35349910    -0.19053324 5kADvi.  
TSTY   1            -0.20000000     0.42678383    -0.11724851 G_5w5dbG  
TSTY   1             0.20000000     0.42678383    -0.11724851 d[*NDMO  
TSTX   1            -0.20000000     0.42678383    -0.11724851 L">m2/ HG  
TSTX   1             0.20000000     0.42678383    -0.11724851 zy.v[Y1!  
TSTY   3            -0.20000000     0.42861670    -0.11541563 @, AB2D  
TSTY   3             0.20000000     0.42861670    -0.11541563 s>[Oe|`  
HGi%b5:<=M  
Estimated Performance Changes based upon Root-Sum-Square method: LR'~:46#u  
Nominal MTF                 :     0.54403234 $"k1^&&E  
Estimated change            :    -0.36299231 =LEzcq>XO  
Estimated MTF               :     0.18104003 !& >LLZ  
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Compensator Statistics: ;iJ}[HUo  
Change in back focus: kBY#=e).  
Minimum            :        -0.000000 3>=G-AH/$K  
Maximum            :         0.000000 !3o/c w9  
Mean               :        -0.000000 P7REE_<1  
Standard Deviation :         0.000000 &B++ "f  
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Monte Carlo Analysis: j 20mZ  
Number of trials: 20 *Wcq'S  
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Initial Statistics: Normal Distribution t}MT<Jj  
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  Trial       Criterion        Change \`%#SmQF  
      1     0.42804416    -0.11598818 !!mGsgnW  
Change in Focus                :      -0.400171 z6h/C{  
      2     0.54384387    -0.00018847 1^[]#N-Bu  
Change in Focus                :       1.018470 ju4wU;Nu  
      3     0.44510003    -0.09893230 +vPCr&40  
Change in Focus                :      -0.601922 }.=@^-JBA5  
      4     0.18154684    -0.36248550 '*t<g@2$  
Change in Focus                :       0.920681 ]iZ-MG)J  
      5     0.28665820    -0.25737414 @&9<)1F  
Change in Focus                :       1.253875 xsrdHP
1  
      6     0.21263372    -0.33139862 [|YJg]i-  
Change in Focus                :      -0.903878 T(k:\z/  
      7     0.40051424    -0.14351809 6)FM83zk)K  
Change in Focus                :      -1.354815 vkW;qt}yO  
      8     0.48754161    -0.05649072 z5sKV7&\[n  
Change in Focus                :       0.215922 f917F.1I  
      9     0.40357468    -0.14045766 a t=;}}X  
Change in Focus                :       0.281783 =,08D^xY  
     10     0.26315315    -0.28087919 1KJ[&jS ]  
Change in Focus                :      -1.048393 `qZ@eGZ z  
     11     0.26120585    -0.28282649 'lgS)m  
Change in Focus                :       1.017611 |Z$)t%'  
     12     0.24033815    -0.30369419 v{8r46Y~Z)  
Change in Focus                :      -0.109292 Lo"s12fr  
     13     0.37164046    -0.17239188 U]ZI_[\'U  
Change in Focus                :      -0.692430 W=2]!%3#  
     14     0.48597489    -0.05805744 #rp)Gc  
Change in Focus                :      -0.662040 En0hjXa  
     15     0.21462327    -0.32940907 u:,B&}j  
Change in Focus                :       1.611296 9A}y^=!`  
     16     0.43378226    -0.11025008 9$%S<v  
Change in Focus                :      -0.640081 $us7f
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     17     0.39321881    -0.15081353 +Lo,*  
Change in Focus                :       0.914906 *P`k|-  
     18     0.20692530    -0.33710703 ~Q=^YZgn8  
Change in Focus                :       0.801607 ESe$6)P  
     19     0.51374068    -0.03029165 4X0ku]  
Change in Focus                :       0.947293 ,{Z!T5 |  
     20     0.38013374    -0.16389860 /EL3Tt  
Change in Focus                :       0.667010 c{jTCkzq  
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Number of traceable Monte Carlo files generated: 20 Owh:(EJ"d  
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Nominal     0.54403234 T3-/+4$0v  
Best        0.54384387    Trial     2 )=0
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Worst       0.18154684    Trial     4 qf%p#+:B3  
Mean        0.35770970 5L\Im^  
Std Dev     0.11156454 U
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;|oem\dKv  
yQC8Gt8  
Compensator Statistics: }w)wW1&  
Change in back focus: jfZ)  
Minimum            :        -1.354815 X\BdN Hr  
Maximum            :         1.611296 GEki34 n0  
Mean               :         0.161872  f^[m~  
Standard Deviation :         0.869664 Nh6!h%  
0EC/l OS  
90% >       0.20977951               yeV|j\TJI.  
80% >       0.22748071               \K:?#07Wj4  
50% >       0.38667627               `QT9W-0e^  
20% >       0.46553746               )N&95\u  
10% >       0.50064115                Wix4se1Ac  
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End of Run. B> zQ[e@t  
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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 PxJvE*6^H  

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 ,go$6  
Wk]E6yz6  
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                 iMp_1EXe  
80% >       0.22748071                 8jgamG  
50% >       0.38667627                 [S[@ Q[zP@  
20% >       0.46553746                 @Y+9")?  
10% >       0.50064115 HQrx9CXE  
<#7j~<  
最后这个数值是MTF值呢，还是MTF的公差？ 
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N`5 mPE  
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？？？   [L>AU; :  
ngH_p>  
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  : 2 1]87$  
90% >       0.20977951                 w&^_2<a2  
80% >       0.22748071                 ".T&nS[z  
50% >       0.38667627                 cAc>p-y
%  
20% >       0.46553746                  oN7JNMT  
10% >       0.50064115 u.L{3gkT  
....... ) v^;"q"  

lq\/E`fc`  
OMVK\_oXo  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   \<K@t=/ 6  
Mode                : Sensitivities +Pm yFJH  
Sampling            : 2 r^|AiYI)  
Nominal Criterion   : 0.54403234 0755;26Bx  
Test Wavelength     : 0.6328 O4i5fVy{  
WGeTL`}dh  
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？ N-4k 9l1  
xVn"xk  
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