[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 8bEii1EM  
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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 Ba|76OBRJ  
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图片:2.jpg

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然后运行分析的结果如下： &uTK@ G+  
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Analysis of Tolerances jJY!;f  
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File : E:\光学设计资料\zemax练习\f500.ZMX }%eXGdC  
Title: L{i|OK^e  
Date : TUE JUN 21 2011 M6b6lhg  
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Units are Millimeters. K~>ESMZ5  
All changes are computed using linear differences. =arrp:  
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Paraxial Focus compensation only. {5gh.  
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WARNING: Solves should be removed prior to tolerancing. 2l!* o7  
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Mnemonics: Wd_KZ}lX  
TFRN: Tolerance on curvature in fringes. zz+[]G+"2m  
TTHI: Tolerance on thickness. 3DO ^vV  
TSDX: Tolerance on surface decentering in x. 9"~,ha7S$  
TSDY: Tolerance on surface decentering in y. zc#aQ.  
TSTX: Tolerance on surface tilt in x (degrees). o@0p  
TSTY: Tolerance on surface tilt in y (degrees). 6o/!H  
TIRR: Tolerance on irregularity (fringes). 2f$6}m'Ad  
TIND: Tolerance on Nd index of refraction. G+xdh  
TEDX: Tolerance on element decentering in x. o}K!p%5_  
TEDY: Tolerance on element decentering in y. [6Gb@jG  
TETX: Tolerance on element tilt in x (degrees). U#!f^@&AB  
TETY: Tolerance on element tilt in y (degrees). ,] ,dOIOwn  
#!X4\+)  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nXOJ  
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WARNING: Boundary constraints on compensators will be ignored. w
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm AlRng&o~  
Mode                : Sensitivities fgSe]q//  
Sampling            : 2 ! uyC$8V*l  
Nominal Criterion   : 0.54403234 *^&2L,w  
Test Wavelength     : 0.6328 &qP&=( $  
#{kwl|c  
dLMKfh/4Q  
Fields: XY Symmetric Angle in degrees qEoa%O  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @ukIt  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 3o=K?eOdg  
.UuCTH;6`  
Sensitivity Analysis: IPhV|7
 
80M"`6  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| "NamP\hj  
Type                      Value      Criterion        Change          Value      Criterion        Change ]%PQ3MT.  
Fringe tolerance on surface 1 P+~{q.|._c  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 }t[?g)"M#-  
Change in Focus                :      -0.000000                            0.000000 75LIQ!G|=  
Fringe tolerance on surface 2 SGREpOlJ+  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 _cY!\'  
Change in Focus                :       0.000000                            0.000000 #X(KW&;m  
Fringe tolerance on surface 3 1 f;k)x  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Rx22W:S=C.  
Change in Focus                :      -0.000000                            0.000000 AVys`{*c  
Thickness tolerance on surface 1 '
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TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 DhwFD8tT  
Change in Focus                :       0.000000                            0.000000 B9RB/vHH  
Thickness tolerance on surface 2 *c+Kqz-  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 yqm^4)Dp  
Change in Focus                :       0.000000                           -0.000000 Xk_xTzJ  
Decenter X tolerance on surfaces 1 through 3 E K)7g~  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 I'h6!N"  
Change in Focus                :       0.000000                            0.000000 =~i~SG/f  
Decenter Y tolerance on surfaces 1 through 3 +d0&(b  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 J<<0U;  
Change in Focus                :       0.000000                            0.000000 u2SnL$A7  
Tilt X tolerance on surfaces 1 through 3 (degrees) RY(\
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TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n\#RI9#\  
Change in Focus                :       0.000000                            0.000000 <303PPX^6  
Tilt Y tolerance on surfaces 1 through 3 (degrees) F(-Q]xj,  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 LP8Stj JP  
Change in Focus                :       0.000000                            0.000000 ^gwVh~j  
Decenter X tolerance on surface 1 O3JN?25s  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Qo!/]\  
Change in Focus                :       0.000000                            0.000000 8$:4~:]/  
Decenter Y tolerance on surface 1 |-Z9-rl
  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <|_/i/H  
Change in Focus                :       0.000000                            0.000000 3McBTa!  
Tilt X tolerance on surface (degrees) 1 7.n/W|\  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2Rc'1sCth-  
Change in Focus                :       0.000000                            0.000000 Vj7(6'Hg  
Tilt Y tolerance on surface (degrees) 1 +)C?v&N  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;O*y$|+PA  
Change in Focus                :       0.000000                            0.000000 %t&5o>1C  
Decenter X tolerance on surface 2 p!MOp-;-  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 e~C^*wL  
Change in Focus                :       0.000000                            0.000000 Ds4n>V,o  
Decenter Y tolerance on surface 2 k#8,:B2  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $6~D 2K  
Change in Focus                :       0.000000                            0.000000 ]VifDFL
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Tilt X tolerance on surface (degrees) 2 n{dl-P  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 !@9Vq6  
Change in Focus                :       0.000000                            0.000000 M^\#(0^2@  
Tilt Y tolerance on surface (degrees) 2 `p@YV(  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 jg]_'^pVzr  
Change in Focus                :       0.000000                            0.000000 j$h.V#1z  
Decenter X tolerance on surface 3 *Z! #6(G  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 [HJ^'/bB'  
Change in Focus                :       0.000000                            0.000000 `)
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Decenter Y tolerance on surface 3 7]t$t3I`  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 G3HmLz  
Change in Focus                :       0.000000                            0.000000 uV r6tb1  
Tilt X tolerance on surface (degrees) 3 | I_,;c  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 kw8?:: <  
Change in Focus                :       0.000000                            0.000000 fRp+-QvE  
Tilt Y tolerance on surface (degrees) 3 Om%{fq&  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5CZii=@  
Change in Focus                :       0.000000                            0.000000 }Yt/e-Yg%r  
Irregularity of surface 1 in fringes *ip2|2G$  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 */iD68r|-  
Change in Focus                :       0.000000                            0.000000 ;/$=!9^sZ  
Irregularity of surface 2 in fringes zY\pZG  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 bce>DLF  
Change in Focus                :       0.000000                            0.000000 fD3}s
#M*G  
Irregularity of surface 3 in fringes 5?+ECxPt  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 UPs*{m  
Change in Focus                :       0.000000                            0.000000 z;6Tp  
Index tolerance on surface 1 jM8e2z3  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 -lr)z=})  
Change in Focus                :       0.000000                            0.000000 |^K-m42  
Index tolerance on surface 2 `9a %vN  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8OoKP4,;  
Change in Focus                :       0.000000                           -0.000000 aZt5/|B  
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Worst offenders: TfaL5evio  
Type                      Value      Criterion        Change uGIA4CUm  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ZUJ!  
TSTY   2             0.20000000     0.35349910    -0.19053324 gs)wQgJ[  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Y4cIYUSc  
TSTX   2             0.20000000     0.35349910    -0.19053324 T `x:80  
TSTY   1            -0.20000000     0.42678383    -0.11724851 P;o6rQf  
TSTY   1             0.20000000     0.42678383    -0.11724851 tz&'!n}  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ~1xln?Q  
TSTX   1             0.20000000     0.42678383    -0.11724851 0d!1;jy,T  
TSTY   3            -0.20000000     0.42861670    -0.11541563 m\>531&  
TSTY   3             0.20000000     0.42861670    -0.11541563 tu}AJ  
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Estimated Performance Changes based upon Root-Sum-Square method: CL{R.OA  
Nominal MTF                 :     0.54403234 4fPbwiKj  
Estimated change            :    -0.36299231 +yX\!H"  
Estimated MTF               :     0.18104003 XQAdb"
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Compensator Statistics: '@)47]~  
Change in back focus: T|o[! @:,  
Minimum            :        -0.000000 x<#Z3Kla  
Maximum            :         0.000000 0j*-ZvE)30  
Mean               :        -0.000000 PjriAlxD  
Standard Deviation :         0.000000 UELni,$  
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Monte Carlo Analysis: c,%9Fh?(  
Number of trials: 20 H\7#$ HB  
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Initial Statistics: Normal Distribution YEF|SEon0  
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  Trial       Criterion        Change 2 2K:[K  
      1     0.42804416    -0.11598818 B9IqX  
Change in Focus                :      -0.400171 zlC|Spaf  
      2     0.54384387    -0.00018847 fx@Hd!nO~"  
Change in Focus                :       1.018470 *sI`+4h[  
      3     0.44510003    -0.09893230 C%8nr8po  
Change in Focus                :      -0.601922 J [}8&sn  
      4     0.18154684    -0.36248550 ~e,k71  
Change in Focus                :       0.920681 Qhlgu
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      5     0.28665820    -0.25737414 JBa( O-T  
Change in Focus                :       1.253875 =KfV;.&  
      6     0.21263372    -0.33139862 :A%|'HxH3  
Change in Focus                :      -0.903878 '^f,H1oW  
      7     0.40051424    -0.14351809 rblEyCR  
Change in Focus                :      -1.354815 
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      8     0.48754161    -0.05649072 T1TKwU8l  
Change in Focus                :       0.215922 p9]008C89  
      9     0.40357468    -0.14045766 siveqz6
h  
Change in Focus                :       0.281783 PM3kI\:)m  
     10     0.26315315    -0.28087919 .{+<o  
Change in Focus                :      -1.048393 $_s"16s  
     11     0.26120585    -0.28282649 +Bk d  
Change in Focus                :       1.017611 P_11N9C  
     12     0.24033815    -0.30369419 p9w<|ZQ]:  
Change in Focus                :      -0.109292 PLDg'4DMg  
     13     0.37164046    -0.17239188 FoY_5/  
Change in Focus                :      -0.692430 f\CJ |tKX  
     14     0.48597489    -0.05805744 H^ _[IkuA%  
Change in Focus                :      -0.662040 }3sj{:z{  
     15     0.21462327    -0.32940907 #"{w
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Change in Focus                :       1.611296 5o;M  
     16     0.43378226    -0.11025008 b#;%TbDF  
Change in Focus                :      -0.640081 rEwEdyK  
     17     0.39321881    -0.15081353 PCzC8~t  
Change in Focus                :       0.914906 po@=$HK  
     18     0.20692530    -0.33710703 0BF'@r";  
Change in Focus                :       0.801607 aewVq@ngq!  
     19     0.51374068    -0.03029165 KF^5 C  
Change in Focus                :       0.947293 &NbhQY`k  
     20     0.38013374    -0.16389860 Rlc$2y@pU  
Change in Focus                :       0.667010 D:`b61sWi_  

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Number of traceable Monte Carlo files generated: 20 'Fi\Qk'D@  
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Nominal     0.54403234 Fc{M N"  
Best        0.54384387    Trial     2 .Cq'D.  
Worst       0.18154684    Trial     4 *?sdWRbu}l  
Mean        0.35770970 _P6e%O8C#  
Std Dev     0.11156454 jK`b6:#(,  
:x"Q[079  
BYjEo  
Compensator Statistics: /)6+I(H  
Change in back focus: D#VUx9kugv  
Minimum            :        -1.354815 {8b6M  
Maximum            :         1.611296 ~z;G$jd  
Mean               :         0.161872 )fPN6x/e  
Standard Deviation :         0.869664 y5>X0tT  
l/WQqT  
90% >       0.20977951               %x(||cq  
80% >       0.22748071               p7H0|>  
50% >       0.38667627               6"@`iY  
20% >       0.46553746               F3)w('h9c  
10% >       0.50064115                . W ~&d_n  
.7GTL  
End of Run. V{qpha4'P  
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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 z89
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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 TR7j`?  
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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                 4(mRLr%l@`  
80% >       0.22748071                 2J&J  
50% >       0.38667627                 *r/o \pyH  
20% >       0.46553746                 k &6$S9  
10% >       0.50064115 WR zIK09@  
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最后这个数值是MTF值呢，还是MTF的公差？ y.aeXlc[  
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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？？？   s*tzU.E(  
g0k{b  
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  : n;0x\Q|S  
90% >       0.20977951                 g9oYK  
80% >       0.22748071                 <o.?T*Q9  
50% >       0.38667627                 DTp|he  
20% >       0.46553746                 HA::(cXL  
10% >       0.50064115 /%5X:*:H  
....... Th\t6K~  

aIW W[xZ  
7(<z=F  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Z$&i"1{  
Mode                : Sensitivities soi.`xE  
Sampling            : 2 j,BiWgj$8  
Nominal Criterion   : 0.54403234 0nV|(M0lu?  
Test Wavelength     : 0.6328 `OWw<6`k  
7)y9%-}  
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？ Ws>2S  
Zg#VZg1 2  
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