[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 `n`"g<K)Q  
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然后添加了默认公差分析，基本没变 D2</^]3Su  
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然后运行分析的结果如下： ge):<k_  
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Analysis of Tolerances {HHh.K  
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File : E:\光学设计资料\zemax练习\f500.ZMX hiRR+`L%  
Title: 6f?BltFaN  
Date : TUE JUN 21 2011 QW~5+c9JJ  
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Units are Millimeters. pAil]f6  
All changes are computed using linear differences. *)bd1B#  
:%#r.p"6x  
Paraxial Focus compensation only. AL]h|)6QpC  
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WARNING: Solves should be removed prior to tolerancing. vZE|Z[M+<  
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Mnemonics: E-sSRt  
TFRN: Tolerance on curvature in fringes. e
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TTHI: Tolerance on thickness. LMFK3
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TSDX: Tolerance on surface decentering in x. G7Z vfLR{:  
TSDY: Tolerance on surface decentering in y. 1a&/Zlr  
TSTX: Tolerance on surface tilt in x (degrees). HX3D*2v":  
TSTY: Tolerance on surface tilt in y (degrees). drENkS=,  
TIRR: Tolerance on irregularity (fringes). VJN/#   
TIND: Tolerance on Nd index of refraction. >wKu6- ]a  
TEDX: Tolerance on element decentering in x. o)
tKH@`vE  
TEDY: Tolerance on element decentering in y. 2"leUur~rO  
TETX: Tolerance on element tilt in x (degrees). O xT}I  
TETY: Tolerance on element tilt in y (degrees). ut4r~~Ar  
4L=$K2R2r  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 4YDT%_h0  
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WARNING: Boundary constraints on compensators will be ignored. "Su b4F`  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm t/KcXM  
Mode                : Sensitivities -c+>j  
Sampling            : 2 "H>r-cyh  
Nominal Criterion   : 0.54403234 <rX\LwR  
Test Wavelength     : 0.6328 X!o[RJY  
W?qpnPW  
7q%|4Z-~  
Fields: XY Symmetric Angle in degrees C}b|2y  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 5^i.;>(b  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 =[]x\&@t  
y]}b?R~p=  
Sensitivity Analysis: |}K  
=oE_.ux\  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ^W Y8-6  
Type                      Value      Criterion        Change          Value      Criterion        Change |XKOXa3.  
Fringe tolerance on surface 1 (9mbF%b  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 i`[#W(m  
Change in Focus                :      -0.000000                            0.000000 @B,j;2eb  
Fringe tolerance on surface 2 oL<BLr9>  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 YBX)eWslK  
Change in Focus                :       0.000000                            0.000000 tJ=3'?T_k  
Fringe tolerance on surface 3 J>`v.8y  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ^Xs%.`Gv/  
Change in Focus                :      -0.000000                            0.000000 -$+,]t^GV  
Thickness tolerance on surface 1 >=if8t!  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 \U/v;Ijf  
Change in Focus                :       0.000000                            0.000000 izMYVI?
0  
Thickness tolerance on surface 2 q*\NRq  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 lijB#1<8*  
Change in Focus                :       0.000000                           -0.000000 3A-*vaySV  
Decenter X tolerance on surfaces 1 through 3 `6&`wKz  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 b,#`n  
Change in Focus                :       0.000000                            0.000000 8h2D+1,PZC  
Decenter Y tolerance on surfaces 1 through 3 vqq6B/r@Fu  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 WgE@89  
Change in Focus                :       0.000000                            0.000000 807al^s x  
Tilt X tolerance on surfaces 1 through 3 (degrees) 60"5?=D  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 glv ;C/l  
Change in Focus                :       0.000000                            0.000000 9Ei5z6Vk/+  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Le*`r2  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gs?8Wzh90*  
Change in Focus                :       0.000000                            0.000000 /@VsqD  
Decenter X tolerance on surface 1 wHx}U M"  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 swttp`  
Change in Focus                :       0.000000                            0.000000 R.K?  
Decenter Y tolerance on surface 1 :-z&Y492  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 >-!r9"8@  
Change in Focus                :       0.000000                            0.000000 >K
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Tilt X tolerance on surface (degrees) 1 70_}S*T  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 @B?FE\  
Change in Focus                :       0.000000                            0.000000 >tN5vWW  
Tilt Y tolerance on surface (degrees) 1 >-b&v$  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 0; 7#ji  
Change in Focus                :       0.000000                            0.000000 -$.0Dc)3!  
Decenter X tolerance on surface 2 TN5>"??"  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 B`i$Wt<7  
Change in Focus                :       0.000000                            0.000000 u t$c)_  
Decenter Y tolerance on surface 2 e,(a6X  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ymYBm:"  
Change in Focus                :       0.000000                            0.000000 @Tm`d ?^  
Tilt X tolerance on surface (degrees) 2 cS4DN  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 jgG$'|s}  
Change in Focus                :       0.000000                            0.000000 GMl"{Oxo&  
Tilt Y tolerance on surface (degrees) 2 }MP>]8Aq  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 !NTH.U:g  
Change in Focus                :       0.000000                            0.000000 P$_&  
Decenter X tolerance on surface 3 ~(P&g7u  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5$kdgFq(  
Change in Focus                :       0.000000                            0.000000 )>
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Decenter Y tolerance on surface 3 {Ur7#h5  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6hO-H&r++  
Change in Focus                :       0.000000                            0.000000 "tUwo(K[  
Tilt X tolerance on surface (degrees) 3 |jsb@  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jXixVNw  
Change in Focus                :       0.000000                            0.000000 =_l)gx+Y+y  
Tilt Y tolerance on surface (degrees) 3 sf$o(^P9\A  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \8
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Change in Focus                :       0.000000                            0.000000 j C)-`_  
Irregularity of surface 1 in fringes wjrG7*_Y4v  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 M diwRi  
Change in Focus                :       0.000000                            0.000000 5X#E@3g5  
Irregularity of surface 2 in fringes -jB3L:  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ^*0'\/N&  
Change in Focus                :       0.000000                            0.000000 yrnv!moc%t  
Irregularity of surface 3 in fringes \9`#]#1bx5  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 rh66_eV  
Change in Focus                :       0.000000                            0.000000 7b,(\Fm  
Index tolerance on surface 1 1yMr~Fo  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 4jX3lq|  
Change in Focus                :       0.000000                            0.000000 2Q@Y^t   
Index tolerance on surface 2 $5N
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TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 g
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Change in Focus                :       0.000000                           -0.000000
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Worst offenders: H}/05e  
Type                      Value      Criterion        Change "u492^  
TSTY   2            -0.20000000     0.35349910    -0.19053324 | &7S8Q  
TSTY   2             0.20000000     0.35349910    -0.19053324 BRzfic:e  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Z+4D.bA  
TSTX   2             0.20000000     0.35349910    -0.19053324 z=g$Exl  
TSTY   1            -0.20000000     0.42678383    -0.11724851 ml0*1Dw  
TSTY   1             0.20000000     0.42678383    -0.11724851 Su7bm1  
TSTX   1            -0.20000000     0.42678383    -0.11724851 q9]IIv  
TSTX   1             0.20000000     0.42678383    -0.11724851 >P=Q #;v  
TSTY   3            -0.20000000     0.42861670    -0.11541563 "g0(I8  
TSTY   3             0.20000000     0.42861670    -0.11541563 u-
3:k  
-DjJ",h( $  
Estimated Performance Changes based upon Root-Sum-Square method: i{Ds&{  
Nominal MTF                 :     0.54403234 \~~}N4  
Estimated change            :    -0.36299231 wNY
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Estimated MTF               :     0.18104003 6;iJ*2f5V  
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Compensator Statistics: %S \8.  
Change in back focus: Z"y=sDO{  
Minimum            :        -0.000000 D+RiM~LH8  
Maximum            :         0.000000 oyvKag  
Mean               :        -0.000000 tU:EN;H  
Standard Deviation :         0.000000 S6g<M5^R  
KC#/Z2A|<  
Monte Carlo Analysis: %Jy
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Number of trials: 20 }D;WN
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_zMgoc7  
Initial Statistics: Normal Distribution aG%,cQ1  
-LW[7s$  
  Trial       Criterion        Change _S`o1^Ad  
      1     0.42804416    -0.11598818 mJ}opy!{;  
Change in Focus                :      -0.400171 >V$ Gx>I  
      2     0.54384387    -0.00018847 VIJ<``9[  
Change in Focus                :       1.018470 Wl-<HR!n  
      3     0.44510003    -0.09893230 [p;E~-S  
Change in Focus                :      -0.601922 y[?-@7i  
      4     0.18154684    -0.36248550 rsXq- Pq*  
Change in Focus                :       0.920681 bZ1 78>J]  
      5     0.28665820    -0.25737414 XYrJ/!*.  
Change in Focus                :       1.253875 oCS2E =O&  
      6     0.21263372    -0.33139862 T~:|!`  
Change in Focus                :      -0.903878 _iV]_\0W2  
      7     0.40051424    -0.14351809 .2)
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Change in Focus                :      -1.354815 bm% $86  
      8     0.48754161    -0.05649072 iyta;dw9  
Change in Focus                :       0.215922 nh>K`+>co  
      9     0.40357468    -0.14045766  ._O  
Change in Focus                :       0.281783 hrGH}CU"  
     10     0.26315315    -0.28087919 Tr0B[QF  
Change in Focus                :      -1.048393 $*R/tJ.  
     11     0.26120585    -0.28282649 U}k9 Py  
Change in Focus                :       1.017611 \ZU1Jb1c  
     12     0.24033815    -0.30369419 Q'O[R+YT ,  
Change in Focus                :      -0.109292 jPZa
D>!  
     13     0.37164046    -0.17239188 cWyW~Ek  
Change in Focus                :      -0.692430 ^vilgg~  
     14     0.48597489    -0.05805744 !> }.~[M  
Change in Focus                :      -0.662040 r.ZF_^y}+  
     15     0.21462327    -0.32940907 0tg8~H3yy  
Change in Focus                :       1.611296 e]=lKxFh&l  
     16     0.43378226    -0.11025008 !V2/A1?  
Change in Focus                :      -0.640081 mtz#}qD66  
     17     0.39321881    -0.15081353 YH&bD16c3  
Change in Focus                :       0.914906 Xce0~\_A  
     18     0.20692530    -0.33710703 qt%D'  
Change in Focus                :       0.801607 N- H^lqD  
     19     0.51374068    -0.03029165 29CINC

 
Change in Focus                :       0.947293 91>
fqe  
     20     0.38013374    -0.16389860 fjk\L\1  
Change in Focus                :       0.667010 ?`zXLY9q7  

Jc&y9]  
Number of traceable Monte Carlo files generated: 20 ';Zi@f"  
w@JKl5  
Nominal     0.54403234 4lhw3,5  
Best        0.54384387    Trial     2 evkH05+;W  
Worst       0.18154684    Trial     4 M])dJ9&e  
Mean        0.35770970 om?-WJI  
Std Dev     0.11156454 s*U1  
>{\7&}gz  
 <1%f@}+8  
Compensator Statistics: <\k
r1qHH  
Change in back focus: _=CZR7:O  
Minimum            :        -1.354815 FFdBtB  
Maximum            :         1.611296 ~.;<  Bj  
Mean               :         0.161872 ]BR,M4   
Standard Deviation :         0.869664 m3Il3ZY.  
hW!)w  
90% >       0.20977951               mU}F!J#6  
80% >       0.22748071               T^J>ZDA  
50% >       0.38667627               z~`b\A,$  
20% >       0.46553746               Uf}\p~;  
10% >       0.50064115                5onm]V]  
Vz6Qxd{m3  
End of Run. p+)YTzzc  
B,,D7cQC  
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
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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 -D6exTxh"  
4Y[1aQ(%  
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                 '*3h!lW1.  
80% >       0.22748071                 H- $)3"K  
50% >       0.38667627                 A,a.8!*}vd  
20% >       0.46553746                 :8OZ#D_Hl  
10% >       0.50064115 ;n 7/O5M|  
:5{wf Am  
最后这个数值是MTF值呢，还是MTF的公差？ ')$+G152  
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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？？？   <*qnY7c&N;  
aeD;5VV  
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  : J  IUx  
90% >       0.20977951                 `p2+&&]S  
80% >       0.22748071                 ;$.J3!  
50% >       0.38667627                 
/_I]H  
20% >       0.46553746                 1g8_Xe4  
10% >       0.50064115 UC]\yUK1J  
....... 0i!uUF  

TO]@ Zu1  
,!#*GZ.ix  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   e7Xeo+/  
Mode                : Sensitivities a, k'Vk{  
Sampling            : 2 Wh+{mvu#  
Nominal Criterion   : 0.54403234 &
"f";  
Test Wavelength     : 0.6328 TC!Yb_H}gN  

[^Os kJ4  
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？ IUE~_7  
-lbm* -(  
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