[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 *1bzg/T<  
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然后添加了默认公差分析，基本没变 tpYa?ZCM  
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然后运行分析的结果如下： Ae49n4J  
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Analysis of Tolerances |$e:*  
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File : E:\光学设计资料\zemax练习\f500.ZMX WZ?!!   
Title: *jF#^=  
Date : TUE JUN 21 2011 +< KNY  
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Units are Millimeters. T//S,  
All changes are computed using linear differences. C`4gsqD;Z  
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Paraxial Focus compensation only. "HC)/)Mv@  
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WARNING: Solves should be removed prior to tolerancing. *]x_,:R6Ow  
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Mnemonics: f1Zt?=  
TFRN: Tolerance on curvature in fringes. hZN<Yd8:  
TTHI: Tolerance on thickness. &Rp"rMeW  
TSDX: Tolerance on surface decentering in x. $bGD%9 z  
TSDY: Tolerance on surface decentering in y. 2U9&l1P=  
TSTX: Tolerance on surface tilt in x (degrees). XDYosC:  
TSTY: Tolerance on surface tilt in y (degrees). p4wr`"Zz  
TIRR: Tolerance on irregularity (fringes). 3hS6jS  
TIND: Tolerance on Nd index of refraction. A*'V+(  
TEDX: Tolerance on element decentering in x. If'2rE7J  
TEDY: Tolerance on element decentering in y. xK;e\^v  
TETX: Tolerance on element tilt in x (degrees). 2jA%[L9d^  
TETY: Tolerance on element tilt in y (degrees). s, XM9h>P4  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. n+oDC65[  
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WARNING: Boundary constraints on compensators will be ignored. Q)^g3J  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm jvs[ /  
Mode                : Sensitivities tt4+m>/T  
Sampling            : 2 Fe$/t(  
Nominal Criterion   : 0.54403234 T=\!2gt  
Test Wavelength     : 0.6328 .Z%G@X*  
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Fields: XY Symmetric Angle in degrees >V!LitdJ  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY &1Fply7(Ay  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 N[k<@Q?*a  
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Sensitivity Analysis: , Oli  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7GZq|M_:y  
Type                      Value      Criterion        Change          Value      Criterion        Change >o[|"oLO  
Fringe tolerance on surface 1 e|'N(D}h*  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 v8@eW.I1  
Change in Focus                :      -0.000000                            0.000000 7X'y>\^w^>  
Fringe tolerance on surface 2 _Bk U+=|J  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 b3U6;]|x  
Change in Focus                :       0.000000                            0.000000 "=|t~`  
Fringe tolerance on surface 3 +?d}7zh  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 dr})-R  
Change in Focus                :      -0.000000                            0.000000 OVswt  
Thickness tolerance on surface 1 nNn56&N]  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 e.;M.8N#SQ  
Change in Focus                :       0.000000                            0.000000 fp&Got!pB  
Thickness tolerance on surface 2 `ROEV~  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 N z~"vi(t  
Change in Focus                :       0.000000                           -0.000000 F2>%KuM  
Decenter X tolerance on surfaces 1 through 3 o3h-=t  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 0kL
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Change in Focus                :       0.000000                            0.000000 S,vu]?-8  
Decenter Y tolerance on surfaces 1 through 3 |}S1o0v{(a  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 8wIK:  
Change in Focus                :       0.000000                            0.000000 1dv=xe.  
Tilt X tolerance on surfaces 1 through 3 (degrees) I/s.xk_i  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 GGE[{Gb9  
Change in Focus                :       0.000000                            0.000000 }uQ${]&D  
Tilt Y tolerance on surfaces 1 through 3 (degrees) aWaw&u  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Q4K+*Fi}  
Change in Focus                :       0.000000                            0.000000 Ew4g'A:H  
Decenter X tolerance on surface 1 C\Ayv)S#2  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 *not.2+  
Change in Focus                :       0.000000                            0.000000 SrZ50Se  
Decenter Y tolerance on surface 1 z="L4  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 +qkMQETV6  
Change in Focus                :       0.000000                            0.000000 uva\0q  
Tilt X tolerance on surface (degrees) 1 \ 4gXY$`@  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 MUcNC\`z  
Change in Focus                :       0.000000                            0.000000 iJP{|-h  
Tilt Y tolerance on surface (degrees) 1 +,_c/(P  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 >saI+u'o  
Change in Focus                :       0.000000                            0.000000 )%mAZk-*;^  
Decenter X tolerance on surface 2 M#M?1(O/NE  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 tWk{1IL  
Change in Focus                :       0.000000                            0.000000 gaeOgP.0  
Decenter Y tolerance on surface 2 r/AHJU3&eY  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `-O=>U5nH  
Change in Focus                :       0.000000                            0.000000 LK+felL  
Tilt X tolerance on surface (degrees) 2 -P#nT 2  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4<}A]BQVkJ  
Change in Focus                :       0.000000                            0.000000 v~5<:0dL  
Tilt Y tolerance on surface (degrees) 2 9#@Zz4Ww  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 grbTcLSF  
Change in Focus                :       0.000000                            0.000000 rJ(OAKnY  
Decenter X tolerance on surface 3 k
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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &=zU611,  
Change in Focus                :       0.000000                            0.000000 @ER1zKK?  
Decenter Y tolerance on surface 3 o!Fl]3F  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `d*b]2  
Change in Focus                :       0.000000                            0.000000 YMu)  
Tilt X tolerance on surface (degrees) 3 }m_t$aaUc1  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Mi74Xl i  
Change in Focus                :       0.000000                            0.000000 ,qy&|4Jz  
Tilt Y tolerance on surface (degrees) 3 3;y_mg  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 g1qi\axm  
Change in Focus                :       0.000000                            0.000000 Z#7U "G-A  
Irregularity of surface 1 in fringes h{/ve`F>@  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 }n95< {  
Change in Focus                :       0.000000                            0.000000 q\H7&w  
Irregularity of surface 2 in fringes k7Oy5$##  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Ab g$W/(|  
Change in Focus                :       0.000000                            0.000000 %6]\^
 
Irregularity of surface 3 in fringes MPvWCPB  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 q6&67u0  
Change in Focus                :       0.000000                            0.000000 0yTQ{'Cc  
Index tolerance on surface 1 HRHrSf7  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 `a'`$'j  
Change in Focus                :       0.000000                            0.000000 N84qcc  
Index tolerance on surface 2 ,n5a])Dg  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 XRa#21
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Change in Focus                :       0.000000                           -0.000000 ]) n0MF)p  
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Worst offenders: #=x+ [d+  
Type                      Value      Criterion        Change xt))]aH  
TSTY   2            -0.20000000     0.35349910    -0.19053324 sR!+d:LJ4  
TSTY   2             0.20000000     0.35349910    -0.19053324 @dV9Dpu  
TSTX   2            -0.20000000     0.35349910    -0.19053324 V6+Zh>'S  
TSTX   2             0.20000000     0.35349910    -0.19053324 A^g>fv  
TSTY   1            -0.20000000     0.42678383    -0.11724851 " $=qGHA~  
TSTY   1             0.20000000     0.42678383    -0.11724851 0n5!B..m}  
TSTX   1            -0.20000000     0.42678383    -0.11724851 /e<5Np\X  
TSTX   1             0.20000000     0.42678383    -0.11724851 b,Lw7MY}[  
TSTY   3            -0.20000000     0.42861670    -0.11541563 k<Oy%+C  
TSTY   3             0.20000000     0.42861670    -0.11541563 *(nJX.7  
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Estimated Performance Changes based upon Root-Sum-Square method: 4:`[qE3  
Nominal MTF                 :     0.54403234 ai^t
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Estimated change            :    -0.36299231 LE|<O  
Estimated MTF               :     0.18104003 ' =}pxyg  
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Compensator Statistics: ~
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Change in back focus: ^S=cNSpC  
Minimum            :        -0.000000 M8_R  
Maximum            :         0.000000 zn^v!:[  
Mean               :        -0.000000 qmID-t"  
Standard Deviation :         0.000000 xFX&9^Uk  
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Monte Carlo Analysis: cIZ[[(Db  
Number of trials: 20 U2UyN9:6F  
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Initial Statistics: Normal Distribution sW'6}^Q  
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  Trial       Criterion        Change AZBC P  
      1     0.42804416    -0.11598818 :ln/`_  
Change in Focus                :      -0.400171 UAKu_RO6S  
      2     0.54384387    -0.00018847 \-d'9b?  
Change in Focus                :       1.018470 }Az'Zu4 =  
      3     0.44510003    -0.09893230 952V@.Zp  
Change in Focus                :      -0.601922 dFMAh&:>  
      4     0.18154684    -0.36248550 ,\}k~ U99  
Change in Focus                :       0.920681 yF;?Hg  
      5     0.28665820    -0.25737414 nqeVV&b!  
Change in Focus                :       1.253875 !"%S#nrL$  
      6     0.21263372    -0.33139862 UeNF^6sWu0  
Change in Focus                :      -0.903878 F~'sT}A*  
      7     0.40051424    -0.14351809 AbG&9=Ks  
Change in Focus                :      -1.354815 ~.H~XKw
 
      8     0.48754161    -0.05649072 T,Fm"U6[(  
Change in Focus                :       0.215922 EO"6Dq(  
      9     0.40357468    -0.14045766 cTy'JT7  
Change in Focus                :       0.281783 Fq4lXlSB  
     10     0.26315315    -0.28087919 _1\poAy  
Change in Focus                :      -1.048393 k|5k8CRX  
     11     0.26120585    -0.28282649 S!<"Swf:  
Change in Focus                :       1.017611 1Df,a#,y"  
     12     0.24033815    -0.30369419 IE}Sdeqi)  
Change in Focus                :      -0.109292 @x*.5:[  
     13     0.37164046    -0.17239188 p$X
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Change in Focus                :      -0.692430 I[%M!_+  
     14     0.48597489    -0.05805744 &rcdr+'  
Change in Focus                :      -0.662040 s*eyTm  
     15     0.21462327    -0.32940907 _C5n
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Change in Focus                :       1.611296 E;$$+rA  
     16     0.43378226    -0.11025008 _V&x`ks  
Change in Focus                :      -0.640081 r\B"?oqC  
     17     0.39321881    -0.15081353 !x6IV25  
Change in Focus                :       0.914906 ^t7_3%%w  
     18     0.20692530    -0.33710703 ys/vI/e\  
Change in Focus                :       0.801607 $q^O%(  
     19     0.51374068    -0.03029165 ~Z7)x7 z  
Change in Focus                :       0.947293 ?o8a_9+  
     20     0.38013374    -0.16389860 shD+eHo$  
Change in Focus                :       0.667010 yj'Cy8  
+~:x}QwGT  
Number of traceable Monte Carlo files generated: 20 5e)i!;7Uv  
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Nominal     0.54403234 d0TgqO{  
Best        0.54384387    Trial     2 y&h~Oa?,;  
Worst       0.18154684    Trial     4 #U:0/4P(  
Mean        0.35770970 YN
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Std Dev     0.11156454 n00z8B1j(l  
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" xlJs93c  
Compensator Statistics: 7WXiG0
 
Change in back focus: K[n<+e;G  
Minimum            :        -1.354815 t6j-?c('  
Maximum            :         1.611296 ?,!uA)({n
 
Mean               :         0.161872 Zi ma^IL  
Standard Deviation :         0.869664 @kS|Jz$iY  
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90% >       0.20977951               =%xIjxYl  
80% >       0.22748071               nM=2"`@
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50% >       0.38667627               58 kv#;j  
20% >       0.46553746               ]!q }|bP  
10% >       0.50064115                 zI(xSX@  
r!CA2iK`  
End of Run. AwtIWH*e  
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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 nMLU-C!t  
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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 JATS6-Lz`  
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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                 Z&AHM &,yj  
80% >       0.22748071                 6-)7:9y  
50% >       0.38667627                 !%SdTaC{T  
20% >       0.46553746                 aeN}hG  
10% >       0.50064115 yBpW#1=  
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最后这个数值是MTF值呢，还是MTF的公差？ tI/mE[W  
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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？？？   Zm"!E6`69  
GN"M:L^k`  
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  : ziB]S@U  
90% >       0.20977951                 Nw3I   
80% >       0.22748071                 0T{c:m~QXe  
50% >       0.38667627                 <
g/(wSl  
20% >       0.46553746                 &
"r==A?  
10% >       0.50064115 \^;|S  
....... cc2oFn  

?-.Ep0/  
cciAMQhA  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Q 2SSJ  
Mode                : Sensitivities Z,8+@  
Sampling            : 2 $jm>tW&;  
Nominal Criterion   : 0.54403234 (&Tb,H)=  
Test Wavelength     : 0.6328 HA3SQ  

8NF;k5   
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？ @<w9fzi  
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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