[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 R#~}ZUk2  
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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 V5rnI\:7  
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图片:2.jpg

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然后运行分析的结果如下： a#H=dIj  
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Analysis of Tolerances d;S:<]l'  
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File : E:\光学设计资料\zemax练习\f500.ZMX $o\p["DP  
Title: F$r8hj`  
Date : TUE JUN 21 2011 /og}e~q  
wI>JOV7  
Units are Millimeters. XBhWj\`(T  
All changes are computed using linear differences. &ukNzV}VW  
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Paraxial Focus compensation only. V.WfP*~NJ  
7qE V5!  
WARNING: Solves should be removed prior to tolerancing. `Q26D
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f<SSg*A;  
Mnemonics: mXc/sh")X  
TFRN: Tolerance on curvature in fringes. )I]E%ut{4,  
TTHI: Tolerance on thickness. +lJuF/sS8m  
TSDX: Tolerance on surface decentering in x. rQ}4\PTi  
TSDY: Tolerance on surface decentering in y. 1ISA^< M  
TSTX: Tolerance on surface tilt in x (degrees). SUD]Wl7G`r  
TSTY: Tolerance on surface tilt in y (degrees). N(vbo  
TIRR: Tolerance on irregularity (fringes). XeDU ,  
TIND: Tolerance on Nd index of refraction. :Tuy]]k  
TEDX: Tolerance on element decentering in x. (/YC\x
?  
TEDY: Tolerance on element decentering in y. `H$s-PX  
TETX: Tolerance on element tilt in x (degrees). d\;M F  
TETY: Tolerance on element tilt in y (degrees). 3JW9G04.  
8e\a_R*(|  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 5YS`v#+  
 p<*-B  
WARNING: Boundary constraints on compensators will be ignored. &8"a7$  
V EY!0PIj  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm _Fl]zs<  
Mode                : Sensitivities #*S/Sh?Q  
Sampling            : 2 RB/[(4  
Nominal Criterion   : 0.54403234 CyG@  
Test Wavelength     : 0.6328 4L!{U@'  
Jr17pu(t  
aS~k.^N  
Fields: XY Symmetric Angle in degrees $#R.+B  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY &tMvs<q,  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 mf}?z21v
D  
F!]UaEmV  
Sensitivity Analysis: [-
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+Yi=Wo/  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| q<c).
4  
Type                      Value      Criterion        Change          Value      Criterion        Change 7h&xfrSrD  
Fringe tolerance on surface 1 Br#]FB|
tD  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 =m}{g/Bk  
Change in Focus                :      -0.000000                            0.000000 hNx`=D9[7  
Fringe tolerance on surface 2 *otJtEI>6  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 PtgUo,P  
Change in Focus                :       0.000000                            0.000000 &}T`[ d_Z  
Fringe tolerance on surface 3 sK?[1BI  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 A1Q]KS@  
Change in Focus                :      -0.000000                            0.000000 CKh-+8j  
Thickness tolerance on surface 1 )_j.0a  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &<_sXHg<x  
Change in Focus                :       0.000000                            0.000000 <R3S{ty  
Thickness tolerance on surface 2 "#4PU5.  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 O')Ivm,E  
Change in Focus                :       0.000000                           -0.000000 @.0jC=!l  
Decenter X tolerance on surfaces 1 through 3 uaU!V4-  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ]-* }-j`  
Change in Focus                :       0.000000                            0.000000 ?Fi-,4  
Decenter Y tolerance on surfaces 1 through 3 SF.,sCk  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 {ReAl_Cm  
Change in Focus                :       0.000000                            0.000000 ORtl~V'  
Tilt X tolerance on surfaces 1 through 3 (degrees) uL-i>!"L!}  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 vO0ql  
Change in Focus                :       0.000000                            0.000000 tAc;O[L  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Q 5@~0  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "r"Y9KODm  
Change in Focus                :       0.000000                            0.000000 kdmVHiGF  
Decenter X tolerance on surface 1 2o\\qEYg  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 3I"&Qp%2  
Change in Focus                :       0.000000                            0.000000 JpuW !I  
Decenter Y tolerance on surface 1 0A1l"$_|  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 8<]>q  
Change in Focus                :       0.000000                            0.000000 E0)v;yRcw  
Tilt X tolerance on surface (degrees) 1 M/1Q/;0P  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 L\-T[w),z7  
Change in Focus                :       0.000000                            0.000000 ~(%G;fZ?x  
Tilt Y tolerance on surface (degrees) 1  bM-Y4[  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 k*-+@U"+  
Change in Focus                :       0.000000                            0.000000 ?<nz2 piP,  
Decenter X tolerance on surface 2 }>Os@]*'^(  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KO5
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Change in Focus                :       0.000000                            0.000000 DJ<c  
Decenter Y tolerance on surface 2 'm2,7]  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 cA/2,i  
Change in Focus                :       0.000000                            0.000000 c89RuI `B~  
Tilt X tolerance on surface (degrees) 2 $iP#8La:Y  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *g=*}
2  
Change in Focus                :       0.000000                            0.000000 MI@ RdXkY  
Tilt Y tolerance on surface (degrees) 2 ^MddfBwk  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $~:hv7%  
Change in Focus                :       0.000000                            0.000000 Ft>ixn  
Decenter X tolerance on surface 3 G+%ZN  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 k"sL.}$  
Change in Focus                :       0.000000                            0.000000 
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Decenter Y tolerance on surface 3 Q`//
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TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 _X]?
 
Change in Focus                :       0.000000                            0.000000 ,U2D&{@  
Tilt X tolerance on surface (degrees) 3 94a_ W9  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ZDVaKDqZ_  
Change in Focus                :       0.000000                            0.000000 hqBwA1](a  
Tilt Y tolerance on surface (degrees) 3 1i>)@{P&BN  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 BryMq !  
Change in Focus                :       0.000000                            0.000000 ?&X6VNbU  
Irregularity of surface 1 in fringes V!Joh5=a  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 "^trHh8=  
Change in Focus                :       0.000000                            0.000000 ]Ny]Ox<  
Irregularity of surface 2 in fringes FcWu#}.p}  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 qkBnEPWZy  
Change in Focus                :       0.000000                            0.000000 F_21`Hj  
Irregularity of surface 3 in fringes 6Edqg
 
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 19=Dd#Nf  
Change in Focus                :       0.000000                            0.000000 kh5V&%>?  
Index tolerance on surface 1 A{c6XQR~z  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 :qT>m  
Change in Focus                :       0.000000                            0.000000 P,%|(qB
  
Index tolerance on surface 2 PAc~p8S  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 d@l;dos),  
Change in Focus                :       0.000000                           -0.000000 h5Z\9`f[  
S\X_!|  
Worst offenders: 3{c&%F~!  
Type                      Value      Criterion        Change ~j4=PT  
TSTY   2            -0.20000000     0.35349910    -0.19053324 .K93VTzy  
TSTY   2             0.20000000     0.35349910    -0.19053324 s e1ipn_A  
TSTX   2            -0.20000000     0.35349910    -0.19053324 au7BqV!uL  
TSTX   2             0.20000000     0.35349910    -0.19053324 %!=YNm  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Q3KBG8  
TSTY   1             0.20000000     0.42678383    -0.11724851 eU12*(  
TSTX   1            -0.20000000     0.42678383    -0.11724851 /J6CSk  
TSTX   1             0.20000000     0.42678383    -0.11724851 EP8LJzd"  
TSTY   3            -0.20000000     0.42861670    -0.11541563 1rKR=To  
TSTY   3             0.20000000     0.42861670    -0.11541563 ~ACB#D%  
/;lk.-yU  
Estimated Performance Changes based upon Root-Sum-Square method: *CG2sAeB  
Nominal MTF                 :     0.54403234 h\dIp`H  
Estimated change            :    -0.36299231 bHMlh^{`%  
Estimated MTF               :     0.18104003 ]I]dwi_g)  
:{AN@zC0\  
Compensator Statistics: ~W#f,mf  
Change in back focus: k]JL
k"K  
Minimum            :        -0.000000 '|cuVxcE55  
Maximum            :         0.000000 |-R::gm  
Mean               :        -0.000000 iIT<{m&`  
Standard Deviation :         0.000000 1dq.UW\  
v_ J.M]  
Monte Carlo Analysis: jab]!eY  
Number of trials: 20 tyDtwV|  
d-*9tit  
Initial Statistics: Normal Distribution _I!Xr!!)a0  
_+. t7q^  
  Trial       Criterion        Change sDF J  
      1     0.42804416    -0.11598818 63f/-64?7  
Change in Focus                :      -0.400171 f^]AyU;F:  
      2     0.54384387    -0.00018847 \?g%>D:O;  
Change in Focus                :       1.018470 %MIu;u FR  
      3     0.44510003    -0.09893230 9@j~1G%^  
Change in Focus                :      -0.601922 M&K@><6k,k  
      4     0.18154684    -0.36248550 c`>\R<Z ]  
Change in Focus                :       0.920681 w iq{Jo#  
      5     0.28665820    -0.25737414 P]TT  
Change in Focus                :       1.253875 Y!`?q8z$G  
      6     0.21263372    -0.33139862 XXF9oy8  
Change in Focus                :      -0.903878 4 hj2rK'y  
      7     0.40051424    -0.14351809 |Bn=$T]  
Change in Focus                :      -1.354815 -Z Z$ 1E  
      8     0.48754161    -0.05649072 NqWHR~&  
Change in Focus                :       0.215922 5A)w.i&V  
      9     0.40357468    -0.14045766 08f~vw"  
Change in Focus                :       0.281783 kgIWgk%  
     10     0.26315315    -0.28087919 :b>|U
"ux  
Change in Focus                :      -1.048393 !69^kIi$  
     11     0.26120585    -0.28282649 `~RV  
Change in Focus                :       1.017611 29]8[Z,4  
     12     0.24033815    -0.30369419 9t[278B6  
Change in Focus                :      -0.109292 N!v@!z9Mu  
     13     0.37164046    -0.17239188 UVLcR  
Change in Focus                :      -0.692430 {$t*Mb0  
     14     0.48597489    -0.05805744 ^Pf&C0xXv  
Change in Focus                :      -0.662040 zbR.Lb  
     15     0.21462327    -0.32940907 xo%iL  
Change in Focus                :       1.611296 =oTYwU  
     16     0.43378226    -0.11025008 H>]z=w~  
Change in Focus                :      -0.640081 |x4yPYBL  
     17     0.39321881    -0.15081353 t[maUy_A  
Change in Focus                :       0.914906 c>R(Fs|6  
     18     0.20692530    -0.33710703 ,dp?'_q{  
Change in Focus                :       0.801607 K8Y/XE
K  
     19     0.51374068    -0.03029165 2%8Y
-o?  
Change in Focus                :       0.947293 IX(yajc[~M  
     20     0.38013374    -0.16389860 I5A^/=bf&  
Change in Focus                :       0.667010 {q)B@#p
 
g?VME]:  
Number of traceable Monte Carlo files generated: 20 NQJqS?^W&M  
L,Nr,QC-  
Nominal     0.54403234 u s0'7|{q  
Best        0.54384387    Trial     2 5:d2q<x:{  
Worst       0.18154684    Trial     4 acZHb[w  
Mean        0.35770970 D5>~'N3b  
Std Dev     0.11156454 <f6PULm  
Ak1)  
WK}+f4tdW[  
Compensator Statistics: }ELCnN  
Change in back focus: |BkY"F7m9  
Minimum            :        -1.354815 ?>8zU;Aj  
Maximum            :         1.611296 %MJ
7u}  
Mean               :         0.161872 PQ]9xzOg[  
Standard Deviation :         0.869664 @qDrTH]5  
`.W;ptZ6  
90% >       0.20977951               E?mp6R]}%  
80% >       0.22748071               3R*@m  
50% >       0.38667627               5r<(
Z0  
20% >       0.46553746               eW)I}z+{  
10% >       0.50064115                2S6EDXc  
UK>=y_FYO  
End of Run. P` F'Nf2U  
)T5h\ZO`;  
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 m#$za7  

图片:3.JPG

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h3EDN:FQ  
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 _0["J:s9  
j~H`*R=ld#  
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                 ^=Ct Aa2  
80% >       0.22748071                 L sDzV)  
50% >       0.38667627                 NZC='3Uz  
20% >       0.46553746                 iynS4
]`U  
10% >       0.50064115 {/A)t1nL  
sMS9!{A  
最后这个数值是MTF值呢，还是MTF的公差？ L^Q+Q)zTh  
hY= s9\  
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？？？   ?hJsN  
Ym.l@(  
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  : R3B5-^s
 
90% >       0.20977951                 0'yG1qG  
80% >       0.22748071                 mUrS&&fu8  
50% >       0.38667627                 ka5#<J7<p  
20% >       0.46553746                 5)d,G9  
10% >       0.50064115 1V|< A  
....... &'5@azU  

]aC':55(  
@<D'-mMt  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   7?6xPKQ)H  
Mode                : Sensitivities Gw ~{V  
Sampling            : 2 = EQN-{#  
Nominal Criterion   : 0.54403234 )KSisEL  
Test Wavelength     : 0.6328 .S~@BI(|<  
DMF?5GX  
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？ To3^L_v"
 
WMW1B}Z3  
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