[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 dt"/4wCO  
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然后添加了默认公差分析，基本没变 c( U,FUS  
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然后运行分析的结果如下： }RadbJ{q=  
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Analysis of Tolerances  2hF^U+I}  
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File : E:\光学设计资料\zemax练习\f500.ZMX YFJaf"?8g  
Title: JZ-@za6u  
Date : TUE JUN 21 2011 uBt ]4d*  
YAT@xZs-  
Units are Millimeters. b_F1?:#  
All changes are computed using linear differences. I1':&l^O  
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Paraxial Focus compensation only. bHRn}K+<}c  
0>SA90Q  
WARNING: Solves should be removed prior to tolerancing. d"db`8 ;S  
1]=X  
Mnemonics: dL%*;   
TFRN: Tolerance on curvature in fringes. }g-w[w 7p  
TTHI: Tolerance on thickness. iQ:eR]7X  
TSDX: Tolerance on surface decentering in x. `9[n5-t  
TSDY: Tolerance on surface decentering in y. [HWVS  
TSTX: Tolerance on surface tilt in x (degrees). ef '?O  
TSTY: Tolerance on surface tilt in y (degrees). NO[A00m|OL  
TIRR: Tolerance on irregularity (fringes). Ro9:kEG$  
TIND: Tolerance on Nd index of refraction. Ot-P J i  
TEDX: Tolerance on element decentering in x. duEXp]f!  
TEDY: Tolerance on element decentering in y. |=YK2};  
TETX: Tolerance on element tilt in x (degrees). K\%\p$ZD  
TETY: Tolerance on element tilt in y (degrees). ohKoX$|p~  
o5&b'WUJ=  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ZYWGP:Y  
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WARNING: Boundary constraints on compensators will be ignored. t{iRCj  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm $%bd`d*S  
Mode                : Sensitivities &t8,326;  
Sampling            : 2 Yl&[_ l  
Nominal Criterion   : 0.54403234 +u$JMp  
Test Wavelength     : 0.6328 KZ[TW,Gw  
ZK
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KO8{eT9d  
Fields: XY Symmetric Angle in degrees MF'Z?M  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY E3j`e>Yz  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 'J} ?'{.  
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Sensitivity Analysis: qypF}Pw  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| )cizd^{  
Type                      Value      Criterion        Change          Value      Criterion        Change AYY(<b  
Fringe tolerance on surface 1 zo@vuB.  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Pah@d!%A  
Change in Focus                :      -0.000000                            0.000000 +8Q @R)3  
Fringe tolerance on surface 2 wg0_J<y]  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 v]on0Pi!  
Change in Focus                :       0.000000                            0.000000 &Wa3/mWK  
Fringe tolerance on surface 3 Axb=1_--  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 NbU4|Oi  
Change in Focus                :      -0.000000                            0.000000 k%~;mu"4}  
Thickness tolerance on surface 1 uVD^X*  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 bi}aVtG~z  
Change in Focus                :       0.000000                            0.000000 v=G*K11@  
Thickness tolerance on surface 2 ``g  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 LqD7SJ}/f  
Change in Focus                :       0.000000                           -0.000000  /d|:  
Decenter X tolerance on surfaces 1 through 3 (kO(R#M  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005  YC6guy>  
Change in Focus                :       0.000000                            0.000000 x#SE%j?  
Decenter Y tolerance on surfaces 1 through 3 g$e|y#Ic$  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005
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Change in Focus                :       0.000000                            0.000000 C1_0 9Vc  
Tilt X tolerance on surfaces 1 through 3 (degrees) C=oeRc'r1W  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ;Ngk"5  
Change in Focus                :       0.000000                            0.000000 H%l-@::+$  
Tilt Y tolerance on surfaces 1 through 3 (degrees) LYYz=oZOE!  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Ig!0A}f  
Change in Focus                :       0.000000                            0.000000 *FEJ5x  
Decenter X tolerance on surface 1 \8ZVI98  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .zdaY, U  
Change in Focus                :       0.000000                            0.000000 ~:{mKc  
Decenter Y tolerance on surface 1 X(E`cH |  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 L;*7p9  
Change in Focus                :       0.000000                            0.000000 Z}0{FwW"4  
Tilt X tolerance on surface (degrees) 1 rlh:|#GTJ  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tH0
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Change in Focus                :       0.000000                            0.000000 8 0nu^_  
Tilt Y tolerance on surface (degrees) 1 +`"Tn`O  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]SAY\;,_  
Change in Focus                :       0.000000                            0.000000 fCNQUK{Gs5  
Decenter X tolerance on surface 2 UZFs]z!,k  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 sM)1w-
  
Change in Focus                :       0.000000                            0.000000 e^@ZN9qQ  
Decenter Y tolerance on surface 2 :D3:`P>,c  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807
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Change in Focus                :       0.000000                            0.000000 aO}hE2]  
Tilt X tolerance on surface (degrees) 2 '")'h  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 1!)'dL0mI  
Change in Focus                :       0.000000                            0.000000 8dx7@y?z  
Tilt Y tolerance on surface (degrees) 2 T.z efoZ  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 rd%uc~/  
Change in Focus                :       0.000000                            0.000000 Tw$tE:  
Decenter X tolerance on surface 3 3 []ltN_  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Pm^FSw"  
Change in Focus                :       0.000000                            0.000000 L
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Decenter Y tolerance on surface 3 ))dqC l  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 l v:GiA"X  
Change in Focus                :       0.000000                            0.000000 /0k'w%V{n  
Tilt X tolerance on surface (degrees) 3 Sx~mc_ekY  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =pmG.>Si  
Change in Focus                :       0.000000                            0.000000 !.#g  
Tilt Y tolerance on surface (degrees) 3 oVP,ar0G  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 nnBS;5  
Change in Focus                :       0.000000                            0.000000 }@ U}c6/  
Irregularity of surface 1 in fringes k t!@}QP  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ,ko#z}Z4r,  
Change in Focus                :       0.000000                            0.000000 Sru0j/|H\  
Irregularity of surface 2 in fringes I8@leT\9M  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ;{wzw8!  
Change in Focus                :       0.000000                            0.000000 (  -q0!]E  
Irregularity of surface 3 in fringes zobFUFx  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 %/\sn<6C}  
Change in Focus                :       0.000000                            0.000000 tkptm%I_  
Index tolerance on surface 1 hJ%$Te  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 v0\M$@N[  
Change in Focus                :       0.000000                            0.000000 KRd'!bG=1  
Index tolerance on surface 2 89 m.,  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 v0&DD&mp  
Change in Focus                :       0.000000                           -0.000000 EGv]K|  
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Worst offenders: D` cy.},L  
Type                      Value      Criterion        Change :rufnmsP<U  
TSTY   2            -0.20000000     0.35349910    -0.19053324 n87Uf$  
TSTY   2             0.20000000     0.35349910    -0.19053324 l_04b];  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ,'YKL",  
TSTX   2             0.20000000     0.35349910    -0.19053324 U. <c#S  
TSTY   1            -0.20000000     0.42678383    -0.11724851 %sZ3Gpi  
TSTY   1             0.20000000     0.42678383    -0.11724851 8*m,#   
TSTX   1            -0.20000000     0.42678383    -0.11724851 O:,Gmft+  
TSTX   1             0.20000000     0.42678383    -0.11724851 t vW0 W  
TSTY   3            -0.20000000     0.42861670    -0.11541563 suaP'0  
TSTY   3             0.20000000     0.42861670    -0.11541563 8(NS;?  
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Estimated Performance Changes based upon Root-Sum-Square method: 4\V/A+<W  
Nominal MTF                 :     0.54403234 d8 v9[4  
Estimated change            :    -0.36299231 w0yzC0yBk  
Estimated MTF               :     0.18104003 Ai 8+U)  
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Compensator Statistics: ebL0cK?  
Change in back focus: wD6QN  
Minimum            :        -0.000000  0RCp  
Maximum            :         0.000000 k&K'FaM!  
Mean               :        -0.000000 4Rp[>}L  
Standard Deviation :         0.000000 b/T k$&  
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Monte Carlo Analysis: &432/=QSm0  
Number of trials: 20 ) .V,zmI  
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Initial Statistics: Normal Distribution
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  Trial       Criterion        Change 1"<{_&d1  
      1     0.42804416    -0.11598818 y^X]q[-?  
Change in Focus                :      -0.400171 VyIJ)F.c  
      2     0.54384387    -0.00018847 ]5j>O^c<  
Change in Focus                :       1.018470 ;u';$0  
      3     0.44510003    -0.09893230 %[L/JJbP&Z  
Change in Focus                :      -0.601922 j:48l[;ed  
      4     0.18154684    -0.36248550 |a\,([aU  
Change in Focus                :       0.920681 hf)RPG&  
      5     0.28665820    -0.25737414 t >64^nS  
Change in Focus                :       1.253875 W8]?dL}|  
      6     0.21263372    -0.33139862 IY}GU 2#  
Change in Focus                :      -0.903878 -4J.YF>  
      7     0.40051424    -0.14351809 4w 7vgB  
Change in Focus                :      -1.354815 :IsJE6r  
      8     0.48754161    -0.05649072 `i~J0#P  
Change in Focus                :       0.215922 pNQ@aJ  
      9     0.40357468    -0.14045766 /bC@^Y&}  
Change in Focus                :       0.281783 5Ktll~+:#  
     10     0.26315315    -0.28087919 H\<PGC"_Y  
Change in Focus                :      -1.048393 8_rd1:t5  
     11     0.26120585    -0.28282649 Z\1`(Pq7`  
Change in Focus                :       1.017611 us:v/WTQ  
     12     0.24033815    -0.30369419 4q@[k:'  
Change in Focus                :      -0.109292 QS,_=< (  
     13     0.37164046    -0.17239188 +).=}.k  
Change in Focus                :      -0.692430 0@&;JMh6<  
     14     0.48597489    -0.05805744 u VUrg;>  
Change in Focus                :      -0.662040 S =sL:FC  
     15     0.21462327    -0.32940907 ph~#{B(\  
Change in Focus                :       1.611296 7{rRQ~s&g9  
     16     0.43378226    -0.11025008 ?IO3w{fmH  
Change in Focus                :      -0.640081 [H`5mY@  
     17     0.39321881    -0.15081353 6iH]N*]S^  
Change in Focus                :       0.914906 --`W1!jI@  
     18     0.20692530    -0.33710703 =k!F`H`/%'  
Change in Focus                :       0.801607 5RSP.Vyx{  
     19     0.51374068    -0.03029165 KWw?W1H  
Change in Focus                :       0.947293 FT gt$I  
     20     0.38013374    -0.16389860 D_w<igu!3  
Change in Focus                :       0.667010 ]7|qhAh<L  
eQ#"-i  
Number of traceable Monte Carlo files generated: 20 PXDJ[Oj7(0  
Z= pvoTY  
Nominal     0.54403234 ar`}+2Qh0  
Best        0.54384387    Trial     2 eTtiAF=bW  
Worst       0.18154684    Trial     4 K}LF ${bS  
Mean        0.35770970 M!PK3  
Std Dev     0.11156454 fAT M?  
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o|VM{5  
Compensator Statistics: iSMV
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Change in back focus: 3KKq1][  
Minimum            :        -1.354815 #t">tL  
Maximum            :         1.611296 3"6-X_  
Mean               :         0.161872 yyjgPbLN=  
Standard Deviation :         0.869664 v)!^%D  
&y2DI"Ff  
90% >       0.20977951               M;0\fUh;  
80% >       0.22748071               lR]SGdY  
50% >       0.38667627               bxww1NG>|Z  
20% >       0.46553746               G^\.xk]  
10% >       0.50064115                oJ0 #U  
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End of Run. d]l(B+\vf  
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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 04#r'UIF  
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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 _8?r!D#P;s  
YYd!/@|N5  
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                 BjCg!6`XF  
80% >       0.22748071                 U>kL|X3 V  
50% >       0.38667627                 xy1R_*.F^T  
20% >       0.46553746                 r4Jc9Tvd  
10% >       0.50064115 c7(Lk"G8  
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最后这个数值是MTF值呢，还是MTF的公差？ nJ~5ICyd  
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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？？？   qFYM2  
"94qBGf  
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  : H^r;,Q$9  
90% >       0.20977951                 @Z2^smf  
80% >       0.22748071                 ^2)<H7p  
50% >       0.38667627                 g`\5!R1  
20% >       0.46553746                 PJ3M,2H1b.  
10% >       0.50064115 iV2v<ap.n  
....... PB(I3R9  

}^tW's8  
,y}@I"  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   @id!F<+%oD  
Mode                : Sensitivities }?^]-`b  
Sampling            : 2 <%?!3 n*  
Nominal Criterion   : 0.54403234 +;/ s0  
Test Wavelength     : 0.6328 sWv!ig_  
Z;~7L*|  
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？ nxMZd=Y  
sA2esA@C<o  
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