[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 5!:._TcO  
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然后添加了默认公差分析，基本没变 [a D:A  
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然后运行分析的结果如下： ~j}J<4&OvC  
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Analysis of Tolerances !d|8'^gc  
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File : E:\光学设计资料\zemax练习\f500.ZMX z\h,SX<U  
Title: M5rwoyn  
Date : TUE JUN 21 2011 v|y<_Ya  
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Units are Millimeters. ,# iZS&  
All changes are computed using linear differences. 49y*xMn  
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Paraxial Focus compensation only. G*Ib^;$u  
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WARNING: Solves should be removed prior to tolerancing. vu>YH)N_h  
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Mnemonics: wjg}[R@!  
TFRN: Tolerance on curvature in fringes. g?$e^ls  
TTHI: Tolerance on thickness. P[1m0!,B  
TSDX: Tolerance on surface decentering in x. As p8qHS  
TSDY: Tolerance on surface decentering in y. G/%Ubi6%  
TSTX: Tolerance on surface tilt in x (degrees). IPkA7VhFF  
TSTY: Tolerance on surface tilt in y (degrees). 7zi"caY  
TIRR: Tolerance on irregularity (fringes). @!-aR u  
TIND: Tolerance on Nd index of refraction. HD~jU>}}  
TEDX: Tolerance on element decentering in x. I4CHfs"ar  
TEDY: Tolerance on element decentering in y. sk\_[p  
TETX: Tolerance on element tilt in x (degrees). SDJ
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TETY: Tolerance on element tilt in y (degrees). T!&jFy*W  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. xf[zEEt  
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WARNING: Boundary constraints on compensators will be ignored. JgxA^>|9;  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Q;Q  
Mode                : Sensitivities 7s$6XO!  
Sampling            : 2 )fy<P;g  
Nominal Criterion   : 0.54403234 qYDj*wqf  
Test Wavelength     : 0.6328 n8 GF8a  
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Fields: XY Symmetric Angle in degrees $]Rl__;  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY L;4[ k;5  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 J]$er0`LY  
//6^+-he  
Sensitivity Analysis: ;!^ +N  
91U^o8y  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Vx}Yl&*D  
Type                      Value      Criterion        Change          Value      Criterion        Change CL EpB2_  
Fringe tolerance on surface 1 ef^Cc)S-Q  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 @'@s*9Nr  
Change in Focus                :      -0.000000                            0.000000 kT>r<`rt  
Fringe tolerance on surface 2 <[/PyNYK  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 $hyqYp"/;  
Change in Focus                :       0.000000                            0.000000 -qs(2^  
Fringe tolerance on surface 3 r94j+$7  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 D9e+  
Change in Focus                :      -0.000000                            0.000000 ],H1  
Thickness tolerance on surface 1 y*y`t6D  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 &NlS =  
Change in Focus                :       0.000000                            0.000000 wBg<Q{J  
Thickness tolerance on surface 2 t5I^
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TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 _ .-o%6  
Change in Focus                :       0.000000                           -0.000000 D)f5pEq'  
Decenter X tolerance on surfaces 1 through 3 XhQw+j~1.  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 W\nHX I  
Change in Focus                :       0.000000                            0.000000 Fl8w7LcF7  
Decenter Y tolerance on surfaces 1 through 3 mOwWg  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 E`A<]dAoK  
Change in Focus                :       0.000000                            0.000000 bbfDt^  
Tilt X tolerance on surfaces 1 through 3 (degrees) oV%( 37W9=  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 KyuA5jQ7  
Change in Focus                :       0.000000                            0.000000 % JgRcx  
Tilt Y tolerance on surfaces 1 through 3 (degrees) [K"U_b}w  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Pmqx ;  
Change in Focus                :       0.000000                            0.000000 ^4y(pcD  
Decenter X tolerance on surface 1 EX+={U|ua$  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Vy?R/ Uu  
Change in Focus                :       0.000000                            0.000000 g;u<[>'I  
Decenter Y tolerance on surface 1 @Fm{6^  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 >reaIBT  
Change in Focus                :       0.000000                            0.000000 Qs}/x[I  
Tilt X tolerance on surface (degrees) 1 ~rVKQ-+4&  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 */0vJz%<.M  
Change in Focus                :       0.000000                            0.000000 zbF:R[)  
Tilt Y tolerance on surface (degrees) 1 bLU^1S8Z  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 z5|e\Z  
Change in Focus                :       0.000000                            0.000000 3i@ "D  
Decenter X tolerance on surface 2 <3i4NXnL2  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 wGov|[X  
Change in Focus                :       0.000000                            0.000000 &cv@Kihq(  
Decenter Y tolerance on surface 2 iBGS
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TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 >z fq*_  
Change in Focus                :       0.000000                            0.000000 0%GqCg  
Tilt X tolerance on surface (degrees) 2 vF*^xhh  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 .IW_DM-  
Change in Focus                :       0.000000                            0.000000 BR&Qw'O%  
Tilt Y tolerance on surface (degrees) 2 IGh !d?D  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 s2(w#n)  
Change in Focus                :       0.000000                            0.000000 I,CAFq  
Decenter X tolerance on surface 3 I =tyQ`  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 []2$rJZD9  
Change in Focus                :       0.000000                            0.000000 pJ2:` f<;  
Decenter Y tolerance on surface 3 AHp830\  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 z*NC?\  
Change in Focus                :       0.000000                            0.000000 8%vh6$s6/  
Tilt X tolerance on surface (degrees) 3 hJC p0F9O  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 uu WY4j6  
Change in Focus                :       0.000000                            0.000000 T!^?d5uW#  
Tilt Y tolerance on surface (degrees) 3 %v`-uAy:  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 `wn<3#  
Change in Focus                :       0.000000                            0.000000 gW6G+  
Irregularity of surface 1 in fringes uI[-P}bSc&  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 |1<]o;:  
Change in Focus                :       0.000000                            0.000000 k *G!.  
Irregularity of surface 2 in fringes /P?|4D}<  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Cu ['&_@  
Change in Focus                :       0.000000                            0.000000 #Vn>ue+?  
Irregularity of surface 3 in fringes %ojR?=ON  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 (.@p4q Q-  
Change in Focus                :       0.000000                            0.000000 9rpg10/T  
Index tolerance on surface 1 'Ec:l(2Ec  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 7T|J[WO  
Change in Focus                :       0.000000                            0.000000 3gPD(r1g  
Index tolerance on surface 2 </
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TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 M3jv aI  
Change in Focus                :       0.000000                           -0.000000 P- `~]]  
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Worst offenders: \CJx=[3(  
Type                      Value      Criterion        Change @LWxz  
TSTY   2            -0.20000000     0.35349910    -0.19053324 oM18aR&  
TSTY   2             0.20000000     0.35349910    -0.19053324 8XH|T^5  
TSTX   2            -0.20000000     0.35349910    -0.19053324 XRz%KVysp  
TSTX   2             0.20000000     0.35349910    -0.19053324 5E\<r/FeJ  
TSTY   1            -0.20000000     0.42678383    -0.11724851 bD-/ZZz  
TSTY   1             0.20000000     0.42678383    -0.11724851 )D"G3g.  
TSTX   1            -0.20000000     0.42678383    -0.11724851 9pl_V WrQ  
TSTX   1             0.20000000     0.42678383    -0.11724851 lEYT{  
TSTY   3            -0.20000000     0.42861670    -0.11541563 8~[C'+r  
TSTY   3             0.20000000     0.42861670    -0.11541563 8[`^(O#\E  
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Estimated Performance Changes based upon Root-Sum-Square method: ?2;n=&ZM  
Nominal MTF                 :     0.54403234 $cJN9|$6  
Estimated change            :    -0.36299231 /n(bThDH  
Estimated MTF               :     0.18104003 U$/Hp#~X  
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Compensator Statistics: JV?RgFy  
Change in back focus: VM\Z<}C  
Minimum            :        -0.000000 G2yUuyAZ  
Maximum            :         0.000000 picP_1L  
Mean               :        -0.000000 ^ ]6 80h  
Standard Deviation :         0.000000 mBpsgm:g^  
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Monte Carlo Analysis: C
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Number of trials: 20
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Initial Statistics: Normal Distribution l5y#i7q  
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  Trial       Criterion        Change n;k97>m${x  
      1     0.42804416    -0.11598818 R !%m5Q?5  
Change in Focus                :      -0.400171 I>8@=V~  
      2     0.54384387    -0.00018847 \'LCC-  
Change in Focus                :       1.018470  oRbYna?J  
      3     0.44510003    -0.09893230 @Y&9S)xcE  
Change in Focus                :      -0.601922 v20
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      4     0.18154684    -0.36248550 6U>jU[/  
Change in Focus                :       0.920681 J_wz'eIb0  
      5     0.28665820    -0.25737414 :{xN33@6\X  
Change in Focus                :       1.253875 Y"/UYxCm|&  
      6     0.21263372    -0.33139862 im?XXsH'  
Change in Focus                :      -0.903878 f`9rTc  
      7     0.40051424    -0.14351809 b%!`fn-;  
Change in Focus                :      -1.354815 N;ecT@Ug  
      8     0.48754161    -0.05649072 j3[OY  
Change in Focus                :       0.215922 B]KLn?zt5  
      9     0.40357468    -0.14045766 >ya-  
Change in Focus                :       0.281783 r4NT`&`g?  
     10     0.26315315    -0.28087919 1uge>o&  
Change in Focus                :      -1.048393 Ze
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     11     0.26120585    -0.28282649 2-E71-J  
Change in Focus                :       1.017611 ~"rwP=<}  
     12     0.24033815    -0.30369419 +#JhhW Zj(  
Change in Focus                :      -0.109292 vK.4JOlRF  
     13     0.37164046    -0.17239188 ]qza*ba  
Change in Focus                :      -0.692430 w%o4MFK=!  
     14     0.48597489    -0.05805744 NdSxWrD`m  
Change in Focus                :      -0.662040 uF3p1by  
     15     0.21462327    -0.32940907 WJSHLy<a  
Change in Focus                :       1.611296 qM:)daS1w  
     16     0.43378226    -0.11025008 /GSI.tO  
Change in Focus                :      -0.640081 ihBl",l&Hq  
     17     0.39321881    -0.15081353 v3JIUdU=P  
Change in Focus                :       0.914906 'TN{8~Gt*  
     18     0.20692530    -0.33710703 8
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Change in Focus                :       0.801607 D_ZBx+/_?  
     19     0.51374068    -0.03029165 muX4Y1M_  
Change in Focus                :       0.947293 E)_!Hi0<s  
     20     0.38013374    -0.16389860 yoY)6cn@  
Change in Focus                :       0.667010 Mjvso0zj  
[;#.DH]  
Number of traceable Monte Carlo files generated: 20 v
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,sJfMY  
Nominal     0.54403234 =i5:*J  
Best        0.54384387    Trial     2 YxkEAb!+  
Worst       0.18154684    Trial     4 G~tOCp="p  
Mean        0.35770970 [<fLPa  
Std Dev     0.11156454 taEMr> /  
fG$.DvJuK  
=XBXSW8)DJ  
Compensator Statistics: @?=)}2=|?i  
Change in back focus: x7
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Minimum            :        -1.354815 2P=~3g*  
Maximum            :         1.611296 %=<NqINM[  
Mean               :         0.161872 h%^kA@3F  
Standard Deviation :         0.869664 _r5Ild@n  
?~Ed n-"Y  
90% >       0.20977951               Q0; gF?  
80% >       0.22748071               j6HbJ#]  
50% >       0.38667627               :(p rx   
20% >       0.46553746               \q1%d.\X  
10% >       0.50064115                :::f,aCAu  
842+KLS  
End of Run. l<:E+lU  
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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 /aa;M*Qp  
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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 HPdwx V  
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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                 XJ?z{gXJ  
80% >       0.22748071                 5g2+Ar(  
50% >       0.38667627                 N,Bs% p#1  
20% >       0.46553746                 =I}V PxhE7  
10% >       0.50064115 8N_rJ)f  
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最后这个数值是MTF值呢，还是MTF的公差？ 2A ,36,  
:P"Gym  
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？？？   /n
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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  : DlI|~  
90% >       0.20977951                 9k&$bC+Q  
80% >       0.22748071                 {*9i}w|2  
50% >       0.38667627                 K? k`U,
 
20% >       0.46553746                 m=V2xoMw6  
10% >       0.50064115 e: tp7w 4  
....... h+@t8Q;gGw  

th,qq  
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这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   )j'b7)W\  
Mode                : Sensitivities Op{Mc$5a  
Sampling            : 2 =fPO0Ot;  
Nominal Criterion   : 0.54403234 w?q"%F;/  
Test Wavelength     : 0.6328 )Be;Zw.|  
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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？ a=R-F!P)  
3^Y-P8.zdB  
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