[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 A9ru]|?  
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然后添加了默认公差分析，基本没变 /PgcW  
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然后运行分析的结果如下： {%XDr,myd  
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Analysis of Tolerances xQ@gh ( (  
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File : E:\光学设计资料\zemax练习\f500.ZMX nfA#d-  
Title: p^?]xD(  
Date : TUE JUN 21 2011 y<*/\]t9L[  
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Units are Millimeters. Qj(|uGqm3  
All changes are computed using linear differences. 46M?Gfd,X  
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Paraxial Focus compensation only. i2
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WARNING: Solves should be removed prior to tolerancing. kY]^~|i6  
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Mnemonics: Nm,9xq  
TFRN: Tolerance on curvature in fringes.
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TTHI: Tolerance on thickness. aW7)}"j4  
TSDX: Tolerance on surface decentering in x. }pL#C  
TSDY: Tolerance on surface decentering in y. tU, >EbwO  
TSTX: Tolerance on surface tilt in x (degrees). GN@(!V#/4  
TSTY: Tolerance on surface tilt in y (degrees). I-o
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TIRR: Tolerance on irregularity (fringes). iBy &#^  
TIND: Tolerance on Nd index of refraction. @/0-`Y@?  
TEDX: Tolerance on element decentering in x. <hM`]/J55  
TEDY: Tolerance on element decentering in y. XonI   
TETX: Tolerance on element tilt in x (degrees). LSW1,}/B  
TETY: Tolerance on element tilt in y (degrees). [{cMEV&  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. }='1<~0
 
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WARNING: Boundary constraints on compensators will be ignored. {G(N vf,K]  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm $ru()/pI)z  
Mode                : Sensitivities n0<I  
Sampling            : 2 KiO1l{.s8n  
Nominal Criterion   : 0.54403234 t&L+]I'P3  
Test Wavelength     : 0.6328 `]3A#y)v  
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Fields: XY Symmetric Angle in degrees EG3?C  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY F)^:WWVc#  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 <zhN7="  
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Sensitivity Analysis: B0#JX MX9  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| +-+%6O<C  
Type                      Value      Criterion        Change          Value      Criterion        Change Hj^_Cp]@*  
Fringe tolerance on surface 1 Jx_BjkF  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 =TG[isC/F9  
Change in Focus                :      -0.000000                            0.000000 D4e!A@LJ  
Fringe tolerance on surface 2 Zcg@]Sx(I  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 j65qIw_Z  
Change in Focus                :       0.000000                            0.000000 TSHQ>kP  
Fringe tolerance on surface 3 ^ ;XJG9a0\  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 u?+i5=N9{  
Change in Focus                :      -0.000000                            0.000000 YqSkz|o}m  
Thickness tolerance on surface 1 7.N~e}p8  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 "de3Sbj@?  
Change in Focus                :       0.000000                            0.000000 ;u "BCW  
Thickness tolerance on surface 2 jizp\%W+  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 0281"a
O  
Change in Focus                :       0.000000                           -0.000000 k1)=xv#S  
Decenter X tolerance on surfaces 1 through 3 x\MzMQ#Bf  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 }:2GD0Ru  
Change in Focus                :       0.000000                            0.000000 ,/bv3pE  
Decenter Y tolerance on surfaces 1 through 3 l'0fRQc  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 sp'f>F2]  
Change in Focus                :       0.000000                            0.000000 m"y_@Jk  
Tilt X tolerance on surfaces 1 through 3 (degrees) 9C2DW,?  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 1 /dy@'  
Change in Focus                :       0.000000                            0.000000 8) 1+j>OQ  
Tilt Y tolerance on surfaces 1 through 3 (degrees) />q?H)6  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 WY 'Qhi
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Change in Focus                :       0.000000                            0.000000 <1(j&U  
Decenter X tolerance on surface 1 b6y/o48  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 u~y0H  
Change in Focus                :       0.000000                            0.000000 *8?0vkZZ2  
Decenter Y tolerance on surface 1 AV%t<fDG#  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 LWp#i8,  
Change in Focus                :       0.000000                            0.000000 c^ifHCt|  
Tilt X tolerance on surface (degrees) 1 RC>79e/u<  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ]> dCt<  
Change in Focus                :       0.000000                            0.000000 o,yP9~8\  
Tilt Y tolerance on surface (degrees) 1 SZ'2/#R>  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9C_Vb39::$  
Change in Focus                :       0.000000                            0.000000 M~jV"OF=  
Decenter X tolerance on surface 2 v@^P4cu;  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ^< o"3?  
Change in Focus                :       0.000000                            0.000000 F&= X/  
Decenter Y tolerance on surface 2 ap y#8]  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 rE[:j2HF  
Change in Focus                :       0.000000                            0.000000 VQ,;~^Td  
Tilt X tolerance on surface (degrees) 2 U.,_zEbx,  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 rMy(NAo
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Change in Focus                :       0.000000                            0.000000 pni*#W*n  
Tilt Y tolerance on surface (degrees) 2 mufJ@YS#  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 /3`(Ki{ Q  
Change in Focus                :       0.000000                            0.000000 vl,Ff9  
Decenter X tolerance on surface 3 -m"9v%>
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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 z +NwGVk3  
Change in Focus                :       0.000000                            0.000000 2YV*U_\L  
Decenter Y tolerance on surface 3 P/e6b .M  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4[o/p8*/  
Change in Focus                :       0.000000                            0.000000 xP61^*-2  
Tilt X tolerance on surface (degrees) 3 7i@vj7K  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 (n+FEE<  
Change in Focus                :       0.000000                            0.000000 6hX[5?}  
Tilt Y tolerance on surface (degrees) 3 )] C"r_  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 94CHxv  
Change in Focus                :       0.000000                            0.000000 }S_#*N)i  
Irregularity of surface 1 in fringes "gCqb;^  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Y$\c_#/]  
Change in Focus                :       0.000000                            0.000000 31> $;"  
Irregularity of surface 2 in fringes ]
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TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 % r>v^1Vo  
Change in Focus                :       0.000000                            0.000000 )@,zG(t5;  
Irregularity of surface 3 in fringes  q0y#Y  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 dtDT^~  
Change in Focus                :       0.000000                            0.000000 r;C BA'Z  
Index tolerance on surface 1 lv=rL  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 w$1B|7tX;2  
Change in Focus                :       0.000000                            0.000000 6Ex16  
Index tolerance on surface 2 r 1x2)  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 u P&<  
Change in Focus                :       0.000000                           -0.000000 ~M?^T$5  
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Worst offenders: "
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Type                      Value      Criterion        Change J7Y lmi  
TSTY   2            -0.20000000     0.35349910    -0.19053324 T_NN.Ol  
TSTY   2             0.20000000     0.35349910    -0.19053324 31)eDs  
TSTX   2            -0.20000000     0.35349910    -0.19053324 >5c38D7k)  
TSTX   2             0.20000000     0.35349910    -0.19053324 7
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TSTY   1            -0.20000000     0.42678383    -0.11724851 >= VCKN2'j  
TSTY   1             0.20000000     0.42678383    -0.11724851 id:6O+\  
TSTX   1            -0.20000000     0.42678383    -0.11724851 @||GMA+|  
TSTX   1             0.20000000     0.42678383    -0.11724851 t8_i[Hw6D  
TSTY   3            -0.20000000     0.42861670    -0.11541563 oH>G3n|U^  
TSTY   3             0.20000000     0.42861670    -0.11541563 V|`w/P9g4  
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Estimated Performance Changes based upon Root-Sum-Square method: >tQ$V<YB
 
Nominal MTF                 :     0.54403234 (\o &Gl  
Estimated change            :    -0.36299231 <]wQ;14;H  
Estimated MTF               :     0.18104003 ]~d!<x#+  
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Compensator Statistics: u|EHe"V"  
Change in back focus: $s`#&.>c-  
Minimum            :        -0.000000 Jnl#d0) -  
Maximum            :         0.000000 x4^*YZc$,  
Mean               :        -0.000000 FwaYp\z  
Standard Deviation :         0.000000 q2}6lf,J K  
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Monte Carlo Analysis: <F
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Number of trials: 20 5ji#rIAhxh  
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Initial Statistics: Normal Distribution MNWuw;:v  
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  Trial       Criterion        Change PGNH<E)  
      1     0.42804416    -0.11598818 < s1  
Change in Focus                :      -0.400171 ]G
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      2     0.54384387    -0.00018847 rcU*6`IWA  
Change in Focus                :       1.018470 ibL   
      3     0.44510003    -0.09893230 _sX@BE  
Change in Focus                :      -0.601922 }Jm~b9j  
      4     0.18154684    -0.36248550 dSPye z  
Change in Focus                :       0.920681 W0;
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      5     0.28665820    -0.25737414 I6lWB(H!u  
Change in Focus                :       1.253875 HBiUp$(mB  
      6     0.21263372    -0.33139862 $-p#4^dg  
Change in Focus                :      -0.903878 j&w4yY  
      7     0.40051424    -0.14351809 Ro
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Change in Focus                :      -1.354815 6H'W]T&  
      8     0.48754161    -0.05649072 'd |*n#Dqc  
Change in Focus                :       0.215922 =QJI_veUG`  
      9     0.40357468    -0.14045766 W`gzMx  
Change in Focus                :       0.281783 (y!V0iy]  
     10     0.26315315    -0.28087919 z( ^ r  
Change in Focus                :      -1.048393 _,bDv`>Ra  
     11     0.26120585    -0.28282649 U])$#/ v  
Change in Focus                :       1.017611 +LB2V3UZ  
     12     0.24033815    -0.30369419 cu )w6!f  
Change in Focus                :      -0.109292 \Jm^XXgS  
     13     0.37164046    -0.17239188 cTu"T
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Change in Focus                :      -0.692430 \?~cJMN  
     14     0.48597489    -0.05805744 (Y:?qy  
Change in Focus                :      -0.662040 ~tB#Q6`nB  
     15     0.21462327    -0.32940907 hzV= 7  
Change in Focus                :       1.611296 qi=v}bp&  
     16     0.43378226    -0.11025008 o3,}X@p  
Change in Focus                :      -0.640081 J e.%-7f  
     17     0.39321881    -0.15081353 Cu`ty] -'  
Change in Focus                :       0.914906 R}T\<6Y  
     18     0.20692530    -0.33710703 tr@)zM GB  
Change in Focus                :       0.801607 2P2/]-6s#r  
     19     0.51374068    -0.03029165 A40Q~X  
Change in Focus                :       0.947293 9*;OHoDh  
     20     0.38013374    -0.16389860 ihBIE  
Change in Focus                :       0.667010 s_4y^w]aX  
D]NJ^.X  
Number of traceable Monte Carlo files generated: 20 5h@5.-}  
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Nominal     0.54403234 Kw87 0n<  
Best        0.54384387    Trial     2 :7[4wQDt4  
Worst       0.18154684    Trial     4 SI9PgC  
Mean        0.35770970 Jm[_X  
Std Dev     0.11156454 #j4jZBOTM  
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\kEC|O)8  
Compensator Statistics: e!oL!Zg  
Change in back focus: ~=k?ea/>  
Minimum            :        -1.354815 M+GtUE~"  
Maximum            :         1.611296 nNpXkI:  
Mean               :         0.161872 5j>olz=n}  
Standard Deviation :         0.869664 V|j{#;  
Zr|z!S?aSC  
90% >       0.20977951               sM6o(=>  
80% >       0.22748071               @BoZZ  
50% >       0.38667627               s7"5NU-  
20% >       0.46553746               g[ O6WZ!F_  
10% >       0.50064115                o[
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End of Run. a,eJO??  
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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 -fT}Nj\  
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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 eZMfn$McJv  
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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                 <$Djags,F  
80% >       0.22748071                 2)9XTY6$  
50% >       0.38667627                 Qb8Z+7  
20% >       0.46553746                 <z8z\4Hz  
10% >       0.50064115 cK\'D  
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最后这个数值是MTF值呢，还是MTF的公差？ 6f)7*j~  
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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？？？    T
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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  : 6>b'g ~I  
90% >       0.20977951                 zLg_0r*h1  
80% >       0.22748071                 mxICQ>s b  
50% >       0.38667627                 ~zDFL15w  
20% >       0.46553746                 u?KG%  
10% >       0.50064115 .jl^"{@6  
....... OT#foP  

Pt7C/ qM/  
PMe3Or@  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   PcvA/W  
Mode                : Sensitivities d{DBG}/Yg  
Sampling            : 2 \{1Vjo  
Nominal Criterion   : 0.54403234 !={QL:  
Test Wavelength     : 0.6328 3Z74&a$  
H}lbF0`  
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？ O9Yk5b;  
PAu/iqCH  
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