[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 ^|(LAjet  
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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 7U"g3a)=  
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图片:2.jpg

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然后运行分析的结果如下： -f^tE,
-  
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Analysis of Tolerances $( kF#  
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File : E:\光学设计资料\zemax练习\f500.ZMX &h)yro  
Title: "Gzz4D  
Date : TUE JUN 21 2011 v{N`.~,^  
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Units are Millimeters. Y\P8v  
All changes are computed using linear differences. AeM^73t
  
|aS.a&vwR  
Paraxial Focus compensation only. U9 s&  
xm~`7~nFR  
WARNING: Solves should be removed prior to tolerancing. 3jU&zw9  
bsli0FJSh'  
Mnemonics: o5PO=AN  
TFRN: Tolerance on curvature in fringes. eC4[AX6e  
TTHI: Tolerance on thickness. lrE5^;/s1  
TSDX: Tolerance on surface decentering in x. JyK3{wYS  
TSDY: Tolerance on surface decentering in y. Of#u  
TSTX: Tolerance on surface tilt in x (degrees). gz9j&W.  
TSTY: Tolerance on surface tilt in y (degrees). !9e=_mY  
TIRR: Tolerance on irregularity (fringes). T&bYa`f]  
TIND: Tolerance on Nd index of refraction. |YWD8 +  
TEDX: Tolerance on element decentering in x. ^z*t%<@[Q  
TEDY: Tolerance on element decentering in y. Dx?,=~W9  
TETX: Tolerance on element tilt in x (degrees). n( yn<  
TETY: Tolerance on element tilt in y (degrees). Nh|uO?&C6  
uH^-R_tQ  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. &r/Mi%  
eo?bL$A[s  
WARNING: Boundary constraints on compensators will be ignored. c)85=T6*aA  
>]TWXmx/w  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 2]*OQb#O6e  
Mode                : Sensitivities ADzhNfS
 
Sampling            : 2 ]%H`_8<gc  
Nominal Criterion   : 0.54403234 >+1duAC  
Test Wavelength     : 0.6328 U7F!Z( 9  
h438`  
h[Y1?ln&h  
Fields: XY Symmetric Angle in degrees vvMT}-!  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY (w3YvG.  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 3nQ`]5.Q w  
p6V0`5@t  
Sensitivity Analysis: g3y~bf  
Wac&b  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| _B<X`L =  
Type                      Value      Criterion        Change          Value      Criterion        Change J ZS:MFA  
Fringe tolerance on surface 1 \R_
C&=  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _`T_">9r  
Change in Focus                :      -0.000000                            0.000000 
=:pJ  
Fringe tolerance on surface 2 6cX
yJW  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Jnov<+  
Change in Focus                :       0.000000                            0.000000 Q197mN+0  
Fringe tolerance on surface 3 Y:[u1~a  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ~$^XP.a.  
Change in Focus                :      -0.000000                            0.000000 L="}ErmK  
Thickness tolerance on surface 1 <bWG!ZG  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ~f98#43  
Change in Focus                :       0.000000                            0.000000 #\m<Sz5Gp#  
Thickness tolerance on surface 2 )y$(AJx$  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 VTE .^EK!  
Change in Focus                :       0.000000                           -0.000000 Fx.=#bVX7  
Decenter X tolerance on surfaces 1 through 3 57c8xk[.2  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 4tBYR9|  
Change in Focus                :       0.000000                            0.000000 :vbW  
Decenter Y tolerance on surfaces 1 through 3 e\L8oOk#r  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 f-Z/tfC  
Change in Focus                :       0.000000                            0.000000 .ioEIsg  
Tilt X tolerance on surfaces 1 through 3 (degrees) rx|pOz,:  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 %'pgGC"|  
Change in Focus                :       0.000000                            0.000000 rey!{3U  
Tilt Y tolerance on surfaces 1 through 3 (degrees) evmeqQG=  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 > ~O.@|  
Change in Focus                :       0.000000                            0.000000 1yhD
rpm  
Decenter X tolerance on surface 1 <LiPEo.R  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @q)d  
Change in Focus                :       0.000000                            0.000000 (sZ"iGn%  
Decenter Y tolerance on surface 1 3Y$GsN4ln  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 SmO~,2=  
Change in Focus                :       0.000000                            0.000000 J|73.&B  
Tilt X tolerance on surface (degrees) 1 T>W,'H  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 S f# R0SA  
Change in Focus                :       0.000000                            0.000000 abVmkdP_s  
Tilt Y tolerance on surface (degrees) 1 f/?P514h  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 H Pz+Dm  
Change in Focus                :       0.000000                            0.000000 !4+<<(B=E  
Decenter X tolerance on surface 2 dR]m8mdqc1  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 v]UwJz3<  
Change in Focus                :       0.000000                            0.000000 CqC`8fD1  
Decenter Y tolerance on surface 2 ]`WJOx4  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 QMm%@zH  
Change in Focus                :       0.000000                            0.000000 ;O,jUiQ  
Tilt X tolerance on surface (degrees) 2 %WS+(0*1  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 @H8EWTZ  
Change in Focus                :       0.000000                            0.000000 dWBA1p  
Tilt Y tolerance on surface (degrees) 2 GM<9p_ B  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 jPkn[W# 6  
Change in Focus                :       0.000000                            0.000000 <#4h}_xA%  
Decenter X tolerance on surface 3 >H,*H;6  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 +=)+'q]S  
Change in Focus                :       0.000000                            0.000000 YS_;OFsd  
Decenter Y tolerance on surface 3 &K,i f  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Vxt+]5X  
Change in Focus                :       0.000000                            0.000000 Z;"vW!%d  
Tilt X tolerance on surface (degrees) 3 .=; ;  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563
(/] J3  
Change in Focus                :       0.000000                            0.000000 K*dCc}:`  
Tilt Y tolerance on surface (degrees) 3 <1!O1ab  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 klhtKp_p  
Change in Focus                :       0.000000                            0.000000 Y_P!B^z3  
Irregularity of surface 1 in fringes `Q,H|hp;k;  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 a8Wwq?@  
Change in Focus                :       0.000000                            0.000000 f*8DCh!r"  
Irregularity of surface 2 in fringes %&bY]w  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 3G4-^hY<  
Change in Focus                :       0.000000                            0.000000 TD_Oo-+\  
Irregularity of surface 3 in fringes OZ;*JR:  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 93hxSRw  
Change in Focus                :       0.000000                            0.000000
PPsE${!  
Index tolerance on surface 1 poFg1  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Ek}A
]zC  
Change in Focus                :       0.000000                            0.000000 e96k{C`j0  
Index tolerance on surface 2 5@W j>:w  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 +"VP-s0  
Change in Focus                :       0.000000                           -0.000000 ov
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Worst offenders: Gs[XJ 5%`~  
Type                      Value      Criterion        Change |Q>IrT  
TSTY   2            -0.20000000     0.35349910    -0.19053324 1BEHw?dLU  
TSTY   2             0.20000000     0.35349910    -0.19053324 vvOV2n.WD  
TSTX   2            -0.20000000     0.35349910    -0.19053324 e>7i_4(C  
TSTX   2             0.20000000     0.35349910    -0.19053324 Z/J y'$x  
TSTY   1            -0.20000000     0.42678383    -0.11724851 &+R?_Ooibk  
TSTY   1             0.20000000     0.42678383    -0.11724851 Aiea\jBv  
TSTX   1            -0.20000000     0.42678383    -0.11724851 L/^I*p,  
TSTX   1             0.20000000     0.42678383    -0.11724851 ct}9i"H#1  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Y6d@h? ht  
TSTY   3             0.20000000     0.42861670    -0.11541563 !f6(Zho  
40 0#v|b  
Estimated Performance Changes based upon Root-Sum-Square method: sx<%2  
Nominal MTF                 :     0.54403234 n'w.; q  
Estimated change            :    -0.36299231 .%QXzIa3F  
Estimated MTF               :     0.18104003 _J[P[(ab  
B7vpsSL  
Compensator Statistics: 8dyg1F  
Change in back focus: @\I#^X5lv  
Minimum            :        -0.000000 FxtI"g\0  
Maximum            :         0.000000 5/z/>D;  
Mean               :        -0.000000 TuqH*{NNy9  
Standard Deviation :         0.000000
G*v,GR  
Wo,?+I  
Monte Carlo Analysis: 8HdAFRw  
Number of trials: 20 E1f\%!2l  
dC4'{n|7  
Initial Statistics: Normal Distribution Ecx
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>-{Hyx  
  Trial       Criterion        Change @xZR9Z8]L  
      1     0.42804416    -0.11598818 B?o7e<l[  
Change in Focus                :      -0.400171 q"_QQ~  
      2     0.54384387    -0.00018847 61 ~upQaR  
Change in Focus                :       1.018470 OK gqT!  
      3     0.44510003    -0.09893230 jlg(drTo  
Change in Focus                :      -0.601922 1@=po)Hnp  
      4     0.18154684    -0.36248550 4nz35BLr  
Change in Focus                :       0.920681 o%*xvH*A  
      5     0.28665820    -0.25737414 tFl"n;~T  
Change in Focus                :       1.253875 sUm'  
      6     0.21263372    -0.33139862 #LN`X8Wz'  
Change in Focus                :      -0.903878 j1HW._G  
      7     0.40051424    -0.14351809 Nl1Do:PY  
Change in Focus                :      -1.354815 9Lfv^V0  
      8     0.48754161    -0.05649072 e(8Ba X_  
Change in Focus                :       0.215922 FNId;  
      9     0.40357468    -0.14045766 mlS$>O_aX  
Change in Focus                :       0.281783 G<;*SYAb  
     10     0.26315315    -0.28087919 PE5G  
Change in Focus                :      -1.048393 VOh4#%Vj  
     11     0.26120585    -0.28282649 qb` \)X]9  
Change in Focus                :       1.017611 cPc</[x[W  
     12     0.24033815    -0.30369419 5QO9Q]I#_\  
Change in Focus                :      -0.109292 b\+`e
b8_  
     13     0.37164046    -0.17239188 ##4HYQ%E  
Change in Focus                :      -0.692430 !FFU=f  
     14     0.48597489    -0.05805744 7i1q wRv  
Change in Focus                :      -0.662040 t@+}8^M  
     15     0.21462327    -0.32940907 $]2vv
r  
Change in Focus                :       1.611296 r-/`"j{O!  
     16     0.43378226    -0.11025008 ^L&iR0  
Change in Focus                :      -0.640081 MR.'t9m2L  
     17     0.39321881    -0.15081353 *siFj CN<  
Change in Focus                :       0.914906 N=g"(%  
     18     0.20692530    -0.33710703 S?BG_J6A7  
Change in Focus                :       0.801607 [;myHI`tw  
     19     0.51374068    -0.03029165 t.\dpBq  
Change in Focus                :       0.947293 U\!X,a*ts{  
     20     0.38013374    -0.16389860 =zs`#-^8  
Change in Focus                :       0.667010 }f7j8py  
6/dI6C!  
Number of traceable Monte Carlo files generated: 20 DkAAV9*  
t#eTV@-
 
Nominal     0.54403234 )TM4R)r%)9  
Best        0.54384387    Trial     2 QUQ'3  
Worst       0.18154684    Trial     4 "`1bA"E  
Mean        0.35770970 y Fq&8 x<X  
Std Dev     0.11156454 WvZ8/T'x  
^&Y#)II  
?p8_AL'RS  
Compensator Statistics: gt w Q-  
Change in back focus: ,UdVNA  
Minimum            :        -1.354815 WQO) =n  
Maximum            :         1.611296 K8Y=S12Ti  
Mean               :         0.161872 x`)&J B  
Standard Deviation :         0.869664 SGlNKA},A  
7EO_5/cY  
90% >       0.20977951               l_
%6  
80% >       0.22748071               @cB$iP=Z4  
50% >       0.38667627               %vi<Aseg  
20% >       0.46553746               hpL;bM'  
10% >       0.50064115                zjoq6  
\=0Vi6!Mc  
End of Run. Rr|VD@%  
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这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 0v$~90)  

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 ~zNAbaC+>t  
N^:9Fz  
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                 )iK6:s#  
80% >       0.22748071                 Lrq.Ab#  
50% >       0.38667627                 v9O~@v{=  
20% >       0.46553746                 _&ks1cw  
10% >       0.50064115 ^V Zk+'4  
HYSIN^<oy  
最后这个数值是MTF值呢，还是MTF的公差？ oJ|j#+Ft  
;)^`3`  
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？？？   { W{
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Ob&<]  
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  : 8xV9.4S  
90% >       0.20977951                 QoIT*!  
80% >       0.22748071                 mA
+&Io  
50% >       0.38667627                 
,\  
20% >       0.46553746                 *%fi/bimG  
10% >       0.50064115 ?Unb? {,&2  
....... Y^7
$t^&  

=JbRu|/  
lG!|{z7+0  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   mdmvT~`  
Mode                : Sensitivities A3no~)wZn  
Sampling            : 2 NI#:|}CYS  
Nominal Criterion   : 0.54403234 [los dnH^?  
Test Wavelength     : 0.6328 K/b_22]CC  
5eoska#y  
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？ 0]=i}wL 8  
OK6]e3UO  
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