[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 ,?+rM ;  
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然后添加了默认公差分析，基本没变 xFpMn}CD  
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然后运行分析的结果如下： pC2r{-  
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Analysis of Tolerances Z~tOR{q  
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File : E:\光学设计资料\zemax练习\f500.ZMX Nw}y_Qf{  
Title: dlC)&Ai
 
Date : TUE JUN 21 2011 (63_  
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Units are Millimeters. nB
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All changes are computed using linear differences. .N99=%[}h  
w<*tbq  
Paraxial Focus compensation only. wj/\!V!  
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WARNING: Solves should be removed prior to tolerancing. c<j2wKz  
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Mnemonics: q"5iza__H  
TFRN: Tolerance on curvature in fringes. I)AV  
TTHI: Tolerance on thickness. #N%xr'H  
TSDX: Tolerance on surface decentering in x. KDW%*%!  
TSDY: Tolerance on surface decentering in y. 0l6z!@GhT  
TSTX: Tolerance on surface tilt in x (degrees). 4!<8Dd  
TSTY: Tolerance on surface tilt in y (degrees). c~(+#a  
TIRR: Tolerance on irregularity (fringes). MJJy mi'b  
TIND: Tolerance on Nd index of refraction. Dx =ms^oN5  
TEDX: Tolerance on element decentering in x. g*b`V{/Vw  
TEDY: Tolerance on element decentering in y. 1Fn+nDnO6  
TETX: Tolerance on element tilt in x (degrees). BhkJ>4#  
TETY: Tolerance on element tilt in y (degrees). w4 <FC$  
tFL/zqgm  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. (b Q1,y  
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WARNING: Boundary constraints on compensators will be ignored. p6]4YGw*^  
<k'=_mC_  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm cA1"Nek  
Mode                : Sensitivities 6~sb8pK.=  
Sampling            : 2 * c] :,5  
Nominal Criterion   : 0.54403234 etj8M y6=  
Test Wavelength     : 0.6328 o`HZS|>K*  
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TmG$Cjf84  
Fields: XY Symmetric Angle in degrees }.Ht=E]  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY _e$15qW+  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 '$W@I  
L5E.`^?  
Sensitivity Analysis: 0b9K/a%sQv  

mc;Z#"kf  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------|  Q0'xn  
Type                      Value      Criterion        Change          Value      Criterion        Change (7q!Z!2  
Fringe tolerance on surface 1 }<o.VY&;.  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 @ 9D, f  
Change in Focus                :      -0.000000                            0.000000 bR6.Xdt.n  
Fringe tolerance on surface 2 Yjv}@i"  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 D(D:/L8T,  
Change in Focus                :       0.000000                            0.000000 3>%rm%ffE  
Fringe tolerance on surface 3 hex:e2x  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Od70w*,  
Change in Focus                :      -0.000000                            0.000000 ^4_)a0Kcm,  
Thickness tolerance on surface 1 1u7Kc'.xc  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 mL`,v WL/`  
Change in Focus                :       0.000000                            0.000000 ('pNAn!]  
Thickness tolerance on surface 2 <Yu}7klJE  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 `me2Q  
Change in Focus                :       0.000000                           -0.000000 :l8n)O3  
Decenter X tolerance on surfaces 1 through 3 4bqi&h3  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 oCdWf63D  
Change in Focus                :       0.000000                            0.000000 _eM\ /(v[  
Decenter Y tolerance on surfaces 1 through 3 Lt0JUUa0  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 -?`^^v  
Change in Focus                :       0.000000                            0.000000 Bs(\e^}  
Tilt X tolerance on surfaces 1 through 3 (degrees) xal+buOiP  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 2Jl6Xc8  
Change in Focus                :       0.000000                            0.000000 s~$ZTzV  
Tilt Y tolerance on surfaces 1 through 3 (degrees) {A]"/AC  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;@GlJ '$;  
Change in Focus                :       0.000000                            0.000000 v{ Md4p  
Decenter X tolerance on surface 1 ^{nf0)56c  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #
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Change in Focus                :       0.000000                            0.000000 B}8xA}<  
Decenter Y tolerance on surface 1 yjlX@YXnw  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 yKF"\^`@  
Change in Focus                :       0.000000                            0.000000 VVO C-:  
Tilt X tolerance on surface (degrees) 1 _Q,`Qn@|BD  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 NrT!&>M  
Change in Focus                :       0.000000                            0.000000 4;'o`K~*  
Tilt Y tolerance on surface (degrees) 1 Nw[TP G5  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _0ki19rs  
Change in Focus                :       0.000000                            0.000000 &2[OH}4  
Decenter X tolerance on surface 2 hp+=UnW  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 mH2XwA|  
Change in Focus                :       0.000000                            0.000000 nI.K|hU:P  
Decenter Y tolerance on surface 2 n@ lf+  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .Nz2K[  
Change in Focus                :       0.000000                            0.000000 3:Q5dr+1_  
Tilt X tolerance on surface (degrees) 2 |;e K5(|  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ~kPHf_B;z  
Change in Focus                :       0.000000                            0.000000 _SdO}AiG  
Tilt Y tolerance on surface (degrees) 2 TeaP\a  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ^N#B(F  
Change in Focus                :       0.000000                            0.000000 ;"46H'>!  
Decenter X tolerance on surface 3 2\80S[f  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 7{>mm$^|V  
Change in Focus                :       0.000000                            0.000000 Uo?g@D  
Decenter Y tolerance on surface 3 _K["qm{X_  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 H<41H;m  
Change in Focus                :       0.000000                            0.000000 vFm8T58 7  
Tilt X tolerance on surface (degrees) 3 ,Z*&QR  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Hc^q_{}"  
Change in Focus                :       0.000000                            0.000000 !m8MyZ}%  
Tilt Y tolerance on surface (degrees) 3 )(yD"]co  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 koDIxj'%X  
Change in Focus                :       0.000000                            0.000000 xa#;<8 iV  
Irregularity of surface 1 in fringes +.^BM/z^O  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ChzKwYDY  
Change in Focus                :       0.000000                            0.000000 D*.U?  
Irregularity of surface 2 in fringes __N< B5E  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 BUB$k7{z  
Change in Focus                :       0.000000                            0.000000 shlMJa?  
Irregularity of surface 3 in fringes LkYcAY$w  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Nki08qZ[  
Change in Focus                :       0.000000                            0.000000 $Y'}wB{pc  
Index tolerance on surface 1 M ,!Dhuas  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 -Uj)6PzGu  
Change in Focus                :       0.000000                            0.000000 c"HB7  
Index tolerance on surface 2 8Ld{
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TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 S&(MR%".  
Change in Focus                :       0.000000                           -0.000000 F[am2[/<A  
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Worst offenders: C:z+8wt  
Type                      Value      Criterion        Change wJc~AP)I%z  
TSTY   2            -0.20000000     0.35349910    -0.19053324 Y$JGpeq8w  
TSTY   2             0.20000000     0.35349910    -0.19053324 A#NJ8_  
TSTX   2            -0.20000000     0.35349910    -0.19053324 N8*6sK.  
TSTX   2             0.20000000     0.35349910    -0.19053324 J:W|2U="  
TSTY   1            -0.20000000     0.42678383    -0.11724851 s4V-brCM$|  
TSTY   1             0.20000000     0.42678383    -0.11724851 /`6Y-8e2  
TSTX   1            -0.20000000     0.42678383    -0.11724851 2IMU &  
TSTX   1             0.20000000     0.42678383    -0.11724851 s'$5]9$S  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Vx'82CIC  
TSTY   3             0.20000000     0.42861670    -0.11541563 'k^d-Mh>h  
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Estimated Performance Changes based upon Root-Sum-Square method: P;~`%,+S  
Nominal MTF                 :     0.54403234 Y=G9|7*lO  
Estimated change            :    -0.36299231 \e)>]C}h  
Estimated MTF               :     0.18104003 1f}YKT  
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Compensator Statistics: >qE f991SZ  
Change in back focus: )ZZjuFQJ)  
Minimum            :        -0.000000 H){}28dX  
Maximum            :         0.000000 RBOb/.$  
Mean               :        -0.000000 t)qu@m?FZ)  
Standard Deviation :         0.000000 Z%&$_-yJ  
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Monte Carlo Analysis: xE>jlr?  
Number of trials: 20 "Yp:{e  
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Initial Statistics: Normal Distribution 8-#_xsZ^;  
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  Trial       Criterion        Change Tumv0=q4wd  
      1     0.42804416    -0.11598818 bF2RP8?en  
Change in Focus                :      -0.400171 3#\++h]QZ  
      2     0.54384387    -0.00018847 *sJT\J$D[  
Change in Focus                :       1.018470  lL\%eQ  
      3     0.44510003    -0.09893230 *r)/Vx`S  
Change in Focus                :      -0.601922 zG\& ZU  
      4     0.18154684    -0.36248550 ,r5'nDV=d  
Change in Focus                :       0.920681 (r6'q0[  
      5     0.28665820    -0.25737414 fk*I
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Change in Focus                :       1.253875 Y
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      6     0.21263372    -0.33139862 ~`Y!_'(x  
Change in Focus                :      -0.903878 eW<|I  
      7     0.40051424    -0.14351809 6 4
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Change in Focus                :      -1.354815 !l(D0 C  
      8     0.48754161    -0.05649072 uqot
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Change in Focus                :       0.215922 hr@kU x  
      9     0.40357468    -0.14045766 #Vy8<Vy&w  
Change in Focus                :       0.281783 4 EE7gkM5  
     10     0.26315315    -0.28087919 B}(r>8?dm  
Change in Focus                :      -1.048393 ?td`*n~,  
     11     0.26120585    -0.28282649 8
NZQTRdH  
Change in Focus                :       1.017611 olv0w;s  
     12     0.24033815    -0.30369419 Cg8
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Change in Focus                :      -0.109292 :kMF.9U:  
     13     0.37164046    -0.17239188 AAXlBY6Y-  
Change in Focus                :      -0.692430 b)+;=o%  
     14     0.48597489    -0.05805744 )5[OG7/g  
Change in Focus                :      -0.662040 H*H~~yQ  
     15     0.21462327    -0.32940907 BQ:hUF3  
Change in Focus                :       1.611296 p3,m),  
     16     0.43378226    -0.11025008 _|Uv7>}J^  
Change in Focus                :      -0.640081 39qIoaHT  
     17     0.39321881    -0.15081353 f&L3M)T  
Change in Focus                :       0.914906 
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     18     0.20692530    -0.33710703 6!Q,XHs  
Change in Focus                :       0.801607 JT p+&NS  
     19     0.51374068    -0.03029165 B"Ma<"HU  
Change in Focus                :       0.947293 Jn&^5,J]F8  
     20     0.38013374    -0.16389860 Nov)'2g7G  
Change in Focus                :       0.667010 Ro@=oyLE  
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Number of traceable Monte Carlo files generated: 20 <dGph  
OZR{+YrB^  
Nominal     0.54403234 ,W|cyQ  
Best        0.54384387    Trial     2 uXouN$&  
Worst       0.18154684    Trial     4 |}o6N5)  
Mean        0.35770970 2C Fgit  
Std Dev     0.11156454 Xaw ~Hh)  
,p>@:C/M  

p:;`X!  
Compensator Statistics: [gDl<6
a#4  
Change in back focus: %M*2j%6  
Minimum            :        -1.354815 b%QcB[k[WB  
Maximum            :         1.611296 Ya&\b 6  
Mean               :         0.161872 Z8ds`KZM  
Standard Deviation :         0.869664 *.6m,QqJ(  
+-!2nk`"a  
90% >       0.20977951               {%oxzdPc  
80% >       0.22748071               O)!S[5YI  
50% >       0.38667627               _+9o'<#u(  
20% >       0.46553746               ES\=MO5a7  
10% >       0.50064115                b~*CJ8Ad  
3UX6Y]E3  
End of Run. )A$xt)}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 .*X=JFxl  
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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 [(2XL"4D  
@\WeI"^F8  
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                 lL&U ioo}D  
80% >       0.22748071                 pqTaN=R8  
50% >       0.38667627                 dZox;_b  
20% >       0.46553746                 /I((A/ks  
10% >       0.50064115 m@UrFPZ  
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最后这个数值是MTF值呢，还是MTF的公差？ %OsxXO?  
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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？？？   G+2 ,x0(  
ROXa/  
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  : H9PnJr8 \  
90% >       0.20977951                 rmo\UCD  
80% >       0.22748071                 ~**x_ v  
50% >       0.38667627                 R&BWCC{  
20% >       0.46553746                 fm`
V2'Rm  
10% >       0.50064115 M0~%[nX  
....... Aq*?Q/pV  

k& +gkJm  
.)_2AoT7[  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   rhy-o?  
Mode                : Sensitivities 'j<u0'K@  
Sampling            : 2 ZQ+DAX*MS  
Nominal Criterion   : 0.54403234 Um6}h@>  
Test Wavelength     : 0.6328 'QxJU$  
kY'Wf`y(  
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？ g:a[N%[C  
Ycspdl+(S$  
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