[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 n%.7h3  
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图片:1.JPG

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然后添加了默认公差分析，基本没变 I%j|D#qY:T  
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图片:2.jpg

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然后运行分析的结果如下： R\G0'?h >  
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Analysis of Tolerances v50bdj9}k  
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File : E:\光学设计资料\zemax练习\f500.ZMX uXJ;A *  
Title: ;RC{<wBTx  
Date : TUE JUN 21 2011 R6kD=JY/!  
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Units are Millimeters. QSdHm  
All changes are computed using linear differences. 7e|s wJ>4  
Mb|a+,:>3  
Paraxial Focus compensation only. CUBEW~X}M  
1Z+8r  
WARNING: Solves should be removed prior to tolerancing. g9}Dn
CT*.  
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Mnemonics: lhAX;s&9  
TFRN: Tolerance on curvature in fringes. j7$e28|_n  
TTHI: Tolerance on thickness. jHE}qE~>5  
TSDX: Tolerance on surface decentering in x. i@)i$i4
  
TSDY: Tolerance on surface decentering in y. aW)-?(6>  
TSTX: Tolerance on surface tilt in x (degrees). @s ?  
TSTY: Tolerance on surface tilt in y (degrees). N~goI#4  
TIRR: Tolerance on irregularity (fringes). ao1(]64X"  
TIND: Tolerance on Nd index of refraction. Dwr)0nk  
TEDX: Tolerance on element decentering in x. ODNM+#}`  
TEDY: Tolerance on element decentering in y. =[cS0Sy
  
TETX: Tolerance on element tilt in x (degrees). n22zq6m  
TETY: Tolerance on element tilt in y (degrees). bMg(B-uF7  
4:$4u@   
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 6}[I2F_^  
cl[BF'.H  
WARNING: Boundary constraints on compensators will be ignored. hV8[@&Sx3  
=.f-w0V  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 5cL83FQh  
Mode                : Sensitivities |:q=T ~x  
Sampling            : 2 ZM!CaR  
Nominal Criterion   : 0.54403234 C*)3e*T
*  
Test Wavelength     : 0.6328 )t0$qd ]  

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ZRh~`yy  
Fields: XY Symmetric Angle in degrees qT{U(  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY F\JM\{&F  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 nBjqTud  
vM*-D{  
Sensitivity Analysis: p Dx1z|@z  
c}Ft^Il  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| w28o}$b`  
Type                      Value      Criterion        Change          Value      Criterion        Change z1PBM
SG  
Fringe tolerance on surface 1 bf ]f=;.+  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 2,$8icM  
Change in Focus                :      -0.000000                            0.000000 !;&p"E|b#  
Fringe tolerance on surface 2 D.B.7-_8  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 we~[] \  
Change in Focus                :       0.000000                            0.000000 kO.%9wFbz  
Fringe tolerance on surface 3
-BrMp%C  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 j"
ThEx0  
Change in Focus                :      -0.000000                            0.000000 #C~+JL  
Thickness tolerance on surface 1 GY6`JWk  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Uol|9F  
Change in Focus                :       0.000000                            0.000000 q@QksAq  
Thickness tolerance on surface 2 eJF5n#  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 <r.)hT"0  
Change in Focus                :       0.000000                           -0.000000 t
X9{hC^  
Decenter X tolerance on surfaces 1 through 3 / ;$#d}R  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 1tEgl\u\  
Change in Focus                :       0.000000                            0.000000 Fsmycr!R  
Decenter Y tolerance on surfaces 1 through 3 9_
# >aOqL  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 dsb`xw  
Change in Focus                :       0.000000                            0.000000 6Z>FTz_  
Tilt X tolerance on surfaces 1 through 3 (degrees) m'Amli@[  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 D"Bl:W'?j  
Change in Focus                :       0.000000                            0.000000 |4)>:d  
Tilt Y tolerance on surfaces 1 through 3 (degrees) b*;Si7-  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 j`JMeCG=Ee  
Change in Focus                :       0.000000                            0.000000 $:=A'd2  
Decenter X tolerance on surface 1 0[RL>;
D:  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 aGrIQq/k)%  
Change in Focus                :       0.000000                            0.000000 54gBJEhg  
Decenter Y tolerance on surface 1 [>+4^&  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 hv`~?n)D66  
Change in Focus                :       0.000000                            0.000000 !POl;%\  
Tilt X tolerance on surface (degrees) 1 *?5*m+  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 qW$<U3u}  
Change in Focus                :       0.000000                            0.000000 }6p@lla,%]  
Tilt Y tolerance on surface (degrees) 1 F|d\k Q
 
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 i2@VB6]?  
Change in Focus                :       0.000000                            0.000000 #+:9T/*>0  
Decenter X tolerance on surface 2 =}lh_  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 RHaI~jb  
Change in Focus                :       0.000000                            0.000000 .GsV>H  
Decenter Y tolerance on surface 2 <Y*+|T+&d  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ]mo-rhDsM  
Change in Focus                :       0.000000                            0.000000 nG,A@/N  
Tilt X tolerance on surface (degrees) 2 wg7V-+@i  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 @GBxL*e  
Change in Focus                :       0.000000                            0.000000 -|J"s$yO4  
Tilt Y tolerance on surface (degrees) 2 D8inB+/-  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ujDd1Bxf?  
Change in Focus                :       0.000000                            0.000000 9i'jjN  
Decenter X tolerance on surface 3 v/Py"hQ  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 AJf4_+He  
Change in Focus                :       0.000000                            0.000000 &R[ Mc-2  
Decenter Y tolerance on surface 3 
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TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 6DM$g=/'  
Change in Focus                :       0.000000                            0.000000 -l`f)0{  
Tilt X tolerance on surface (degrees) 3 w zYzug  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 M}`B{]lLz  
Change in Focus                :       0.000000                            0.000000 cQ/5
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Tilt Y tolerance on surface (degrees) 3 1e(E:_t  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 $}<PL}+  
Change in Focus                :       0.000000                            0.000000 :V1W/c  
Irregularity of surface 1 in fringes j.C`U(n}`  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 J5di[nu  
Change in Focus                :       0.000000                            0.000000 bP8Sj16q  
Irregularity of surface 2 in fringes $h5xH9x ;  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 _
4rFEYz$d  
Change in Focus                :       0.000000                            0.000000 aK&b{d  
Irregularity of surface 3 in fringes dq7x3v^"ZG  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 KX!T8+Y  
Change in Focus                :       0.000000                            0.000000 NMW#AZVd  
Index tolerance on surface 1 rx $mk  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ~;QvWS  
Change in Focus                :       0.000000                            0.000000 ?{\nf7Y  
Index tolerance on surface 2 | h`0u'#  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 8B7cBkl:  
Change in Focus                :       0.000000                           -0.000000 `NnUyQ;T
 
TMAJb+@l:  
Worst offenders: $56Z#'(D  
Type                      Value      Criterion        Change Fgkajig  
TSTY   2            -0.20000000     0.35349910    -0.19053324 $$D}I*^Dt  
TSTY   2             0.20000000     0.35349910    -0.19053324 U1@IX4^2`  
TSTX   2            -0.20000000     0.35349910    -0.19053324 y)F;zW<+  
TSTX   2             0.20000000     0.35349910    -0.19053324 n1qQ+(xC  
TSTY   1            -0.20000000     0.42678383    -0.11724851 D;oe2E{I  
TSTY   1             0.20000000     0.42678383    -0.11724851 x4g3rmp  
TSTX   1            -0.20000000     0.42678383    -0.11724851 O?NeSx1  
TSTX   1             0.20000000     0.42678383    -0.11724851 3!3xCO  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Vx(B{5>Vu  
TSTY   3             0.20000000     0.42861670    -0.11541563 *YW/_  
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Estimated Performance Changes based upon Root-Sum-Square method: &J55P]7w  
Nominal MTF                 :     0.54403234 YCdS!&^U
N  
Estimated change            :    -0.36299231 _]04lGx27  
Estimated MTF               :     0.18104003 /|r^W\DV&x  
BS /G("oZ[  
Compensator Statistics: ;6gDV`Twy  
Change in back focus: z3`-plE  
Minimum            :        -0.000000 vh"R'o  
Maximum            :         0.000000 ]p*l%(dhY  
Mean               :        -0.000000 +~'865{  
Standard Deviation :         0.000000 cmBB[pk\  
wihH?~]  
Monte Carlo Analysis: WzAb|&?  
Number of trials: 20 cnSJ{T  
zw+B9PYqX  
Initial Statistics: Normal Distribution H70LhN  
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  Trial       Criterion        Change #?5 (o  
      1     0.42804416    -0.11598818 WF2}-NU"  
Change in Focus                :      -0.400171 <!L>Exh&r  
      2     0.54384387    -0.00018847 wDcj
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Change in Focus                :       1.018470 s<*XNNE7  
      3     0.44510003    -0.09893230 /rg*p  
Change in Focus                :      -0.601922 if}-_E<F  
      4     0.18154684    -0.36248550 pR `>b 3  
Change in Focus                :       0.920681 i7]4W  
      5     0.28665820    -0.25737414 &?VQ,+[<
 
Change in Focus                :       1.253875 Ae mDJ8Y  
      6     0.21263372    -0.33139862 =3|O%\  
Change in Focus                :      -0.903878 M>DaQ`b  
      7     0.40051424    -0.14351809 Z= jr-)kK  
Change in Focus                :      -1.354815 2}YOcnB  
      8     0.48754161    -0.05649072 zEs>b(5u  
Change in Focus                :       0.215922 |\QgX%  
      9     0.40357468    -0.14045766 #rxVd 7f  
Change in Focus                :       0.281783 umD!
2 w  
     10     0.26315315    -0.28087919 %R@X>2l/_  
Change in Focus                :      -1.048393 Lk~ho?^`  
     11     0.26120585    -0.28282649 UjaK&K+M?  
Change in Focus                :       1.017611 '#s05hr  
     12     0.24033815    -0.30369419 9v?N+Rb  
Change in Focus                :      -0.109292 P9=?zh6G.  
     13     0.37164046    -0.17239188 =jlt5 z  
Change in Focus                :      -0.692430 }xBc0gr  
     14     0.48597489    -0.05805744 1v,Us5s<"6  
Change in Focus                :      -0.662040 p+l!6  
     15     0.21462327    -0.32940907 _Xnqb+  
Change in Focus                :       1.611296 Xua+cVc\y  
     16     0.43378226    -0.11025008 i%ZW3MrY~  
Change in Focus                :      -0.640081 ZaeqOVp/j  
     17     0.39321881    -0.15081353 ;w'D4p= P  
Change in Focus                :       0.914906 n,=VQOu  
     18     0.20692530    -0.33710703 )_{dWf1  
Change in Focus                :       0.801607 RMd[Yr2e  
     19     0.51374068    -0.03029165 @.G[s)x  
Change in Focus                :       0.947293 ! vP[;6  
     20     0.38013374    -0.16389860 GN
-mrQo  
Change in Focus                :       0.667010 x\F,SEj  
VS9`{  
Number of traceable Monte Carlo files generated: 20 5nv<^>[J  
>2~+.WePu  
Nominal     0.54403234 0dhF&*h|L  
Best        0.54384387    Trial     2 i-bJS6  
Worst       0.18154684    Trial     4 ,stN  
Mean        0.35770970 Qi_>
Mg`x  
Std Dev     0.11156454 B+[A]dgS  
#k_HN}B  
!6s"]WvF  
Compensator Statistics: f` :i.Sr  
Change in back focus: )jkXSTZ  
Minimum            :        -1.354815 VUVaaOm
O  
Maximum            :         1.611296 m-H-6`]  
Mean               :         0.161872 AK\$i$@6  
Standard Deviation :         0.869664 ,Vh.T&X5  
0TN;86Mo  
90% >       0.20977951               (7XCA,KTGI  
80% >       0.22748071               '3TW [!m  
50% >       0.38667627               %6L^2 X  
20% >       0.46553746               6T+FH;h  
10% >       0.50064115                'a$Gv&fu  
YhOlxON
 
End of Run. HHq_P/'  
6b%WHLUeT  
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 j'%$XvI  

图片:3.JPG

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Q2zjZC*'%  
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 @fs`=lL/  
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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                 = M]iIWQ@`  
80% >       0.22748071                 ,0E{h}(  
50% >       0.38667627                 'XzXZJ[uq  
20% >       0.46553746                 L=q+|j1>  
10% >       0.50064115 6oLwfTy  
]u4Hk?j~<  
最后这个数值是MTF值呢，还是MTF的公差？ :um|nRwy9  
;9~6_@,@o  
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？？？   U Z|HJ8_  
oS7(s  
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  : =)E,8L  
90% >       0.20977951                 Dk+&X-]6x5  
80% >       0.22748071                 8[|UgI,>z  
50% >       0.38667627                
i~3u>CT  
20% >       0.46553746                 Gcb|W&  
10% >       0.50064115 HLBkR>e  
....... {tThy#  

t=*@yQ nB  
/s-A?lw^2  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   l^d[EL+  
Mode                : Sensitivities %lX%8Z$v  
Sampling            : 2 >XO
iu#kC  
Nominal Criterion   : 0.54403234 1yV: qp  
Test Wavelength     : 0.6328 sHcTd>xS  
/B5-Fx7j3  
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？ 7 Sa1;%R  
Sa"9^_.2#  
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