[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 E0|aI4S4  
~Mx fud  

图片:1.JPG

'K!kJ9oqe  
8?$2;uGL  
然后添加了默认公差分析，基本没变 Gg+>_b{S5T  
~,:f,FkSQ  

图片:2.jpg

JB|I/\(A  
)eFK@goGeb  
然后运行分析的结果如下： #.@=xhK/  
8+u8piG  
Analysis of Tolerances j0GI[#  
p%s D>1k  
File : E:\光学设计资料\zemax练习\f500.ZMX zaZnL7ZJX  
Title: @.{  
Date : TUE JUN 21 2011 w9FI*30  
{ nV zN(  
Units are Millimeters. \x!>5Z Y  
All changes are computed using linear differences. (gZ!o_  
>g[W@FhT'k  
Paraxial Focus compensation only. jz)H?UuDY  
DHAWUS6  
WARNING: Solves should be removed prior to tolerancing. TU/J]'))C  
Y!L jy [/  
Mnemonics: I%p#E#[G  
TFRN: Tolerance on curvature in fringes. o;[oy#aWl_  
TTHI: Tolerance on thickness. nqBuC  
TSDX: Tolerance on surface decentering in x. _(hwU>.  
TSDY: Tolerance on surface decentering in y. c;^J!e  
TSTX: Tolerance on surface tilt in x (degrees). {ZcZ\Q;6  
TSTY: Tolerance on surface tilt in y (degrees). q :bKT#\  
TIRR: Tolerance on irregularity (fringes). BUb(BzC  
TIND: Tolerance on Nd index of refraction. gy{a+Wbc*  
TEDX: Tolerance on element decentering in x. ~K9U0ypH  
TEDY: Tolerance on element decentering in y. zgqw*)C~  
TETX: Tolerance on element tilt in x (degrees). QP#Wfk(C  
TETY: Tolerance on element tilt in y (degrees). j1ZFsTFMWp  
}$-VI\96  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. BGX@n#:  
Pio^5jhB6  
WARNING: Boundary constraints on compensators will be ignored. IfcFlXmt2  

gNwXOd u  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm aM~fRra7  
Mode                : Sensitivities qC)VT
3  
Sampling            : 2 c #kV+n<  
Nominal Criterion   : 0.54403234 guv@t&;t0  
Test Wavelength     : 0.6328 RY{tX`  
=@2V#X]M*  
^mi4q[PM  
Fields: XY Symmetric Angle in degrees 6<Z:Xw  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY I*}#nY0+  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 vi8~j  
{ZXC%(u  
Sensitivity Analysis: Jdn*?hc+  
<+gl"lG  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 3J T3;O  
Type                      Value      Criterion        Change          Value      Criterion        Change 1v&Fo2ML  
Fringe tolerance on surface 1 "!tw ,Gp  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 d|]O<]CG_  
Change in Focus                :      -0.000000                            0.000000 n*Vd<m;w  
Fringe tolerance on surface 2 VA'X!(Cv  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 t1jlxK  
Change in Focus                :       0.000000                            0.000000 JtpY][}"~3  
Fringe tolerance on surface 3 A Vm{#^p[(  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 `mjx4Lb  
Change in Focus                :      -0.000000                            0.000000 | ",[C3Jg  
Thickness tolerance on surface 1 9T2A)a]0  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 xn@0pL3B~  
Change in Focus                :       0.000000                            0.000000 z,FTsR$x  
Thickness tolerance on surface 2 vQ"s  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 .vS6_  
Change in Focus                :       0.000000                           -0.000000 ]TgP!M&q  
Decenter X tolerance on surfaces 1 through 3 O[)]dD&'  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ttaQlEa=Z  
Change in Focus                :       0.000000                            0.000000 kLt9;<L  
Decenter Y tolerance on surfaces 1 through 3 &
_d/ciq1f  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 
}m%?&c  
Change in Focus                :       0.000000                            0.000000 lVdT^"~3  
Tilt X tolerance on surfaces 1 through 3 (degrees) IzdTXc f  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 xwnoZ&h  
Change in Focus                :       0.000000                            0.000000 1Xr"h:U_X  
Tilt Y tolerance on surfaces 1 through 3 (degrees) t*d >eK`:N  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ]<T8ZA_Y;  
Change in Focus                :       0.000000                            0.000000 hNnX-^J<o  
Decenter X tolerance on surface 1 *fi;ZUPW3  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 l(#ke  
Change in Focus                :       0.000000                            0.000000 VtO;UN  
Decenter Y tolerance on surface 1 2l@"p!ar=  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ZQ~myqx,+L  
Change in Focus                :       0.000000                            0.000000 & 8'(  
Tilt X tolerance on surface (degrees) 1 ncattp   
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 RP,:[}mPl  
Change in Focus                :       0.000000                            0.000000 5!F\h'E  
Tilt Y tolerance on surface (degrees) 1 j-YJ."  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 HCG@#W<wc  
Change in Focus                :       0.000000                            0.000000 z8/xGQn  
Decenter X tolerance on surface 2 eR-=<0Iw;  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 {^2W>^  
Change in Focus                :       0.000000                            0.000000 K- I\P6R`  
Decenter Y tolerance on surface 2 LxlbD#<V  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 b"nG-0JR  
Change in Focus                :       0.000000                            0.000000 oU0 h3  
Tilt X tolerance on surface (degrees) 2 H5rPq_R  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 M6
]0Y@@>  
Change in Focus                :       0.000000                            0.000000 ~sU?"V  
Tilt Y tolerance on surface (degrees) 2 sQ}%7BM
K  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 j\'+wVyo  
Change in Focus                :       0.000000                            0.000000
?,:#8.9  
Decenter X tolerance on surface 3 pSQCT  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 )W]>\=@Y  
Change in Focus                :       0.000000                            0.000000 9G#8%[W  
Decenter Y tolerance on surface 3 5BHOHw D{  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 cc41b*ci$  
Change in Focus                :       0.000000                            0.000000 r|^lt7\  
Tilt X tolerance on surface (degrees) 3 *:9 >W$0u  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 e(~'pk"mZ  
Change in Focus                :       0.000000                            0.000000 8Y\OCwO  
Tilt Y tolerance on surface (degrees) 3 >AQ)x  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 1GG>.RCP  
Change in Focus                :       0.000000                            0.000000 y98JiNq  
Irregularity of surface 1 in fringes Y
 .  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 2"leUur~rO  
Change in Focus                :       0.000000                            0.000000
19F ;oFp  
Irregularity of surface 2 in fringes v`S2M  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 rToa
GQh  
Change in Focus                :       0.000000                            0.000000 SbS$(Gt#Bv  
Irregularity of surface 3 in fringes mA(nyF  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 "($Lx  
Change in Focus                :       0.000000                            0.000000 BFMS*t`  
Index tolerance on surface 1 E+}GxFG-:  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578
%'L].+$t  
Change in Focus                :       0.000000                            0.000000 %1\v7Xw{9  
Index tolerance on surface 2 B;z;vrrL  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 1mHwYT+  
Change in Focus                :       0.000000                           -0.000000 ;Y'8:ncDn  
K`Bq(z?/  
Worst offenders: -RG8<bI,  
Type                      Value      Criterion        Change Z}8k[*.  
TSTY   2            -0.20000000     0.35349910    -0.19053324 @s%X  
TSTY   2             0.20000000     0.35349910    -0.19053324 %n05Jitl  
TSTX   2            -0.20000000     0.35349910    -0.19053324 17>5#JLP  
TSTX   2             0.20000000     0.35349910    -0.19053324 ;
w`sz.  
TSTY   1            -0.20000000     0.42678383    -0.11724851 ;OOj[
%.  
TSTY   1             0.20000000     0.42678383    -0.11724851 %cH8
;5U40  
TSTX   1            -0.20000000     0.42678383    -0.11724851 Z+Ye
g  
TSTX   1             0.20000000     0.42678383    -0.11724851 nnt8 sf@\  
TSTY   3            -0.20000000     0.42861670    -0.11541563 `d7gm;ykp  
TSTY   3             0.20000000     0.42861670    -0.11541563 N;-/wip
 
j)jCu ;`  
Estimated Performance Changes based upon Root-Sum-Square method: |7 &|>  
Nominal MTF                 :     0.54403234 `"a? a5]k  
Estimated change            :    -0.36299231 U^%9 )4bj  
Estimated MTF               :     0.18104003 z,pNb%*O  
R'6@n#:  
Compensator Statistics: EXA^!/)  
Change in back focus: wgY6D!Y   
Minimum            :        -0.000000 TC qkm^xv  
Maximum            :         0.000000 7:n?PN(p6a  
Mean               :        -0.000000 In f9wq\  
Standard Deviation :         0.000000 ,*/Pg52?  
7MY)\aH  
Monte Carlo Analysis: ,{k<JA{  
Number of trials: 20 8h2D+1,PZC  
vqq6B/r@Fu  
Initial Statistics: Normal Distribution WgE@89  
807al^s x  
  Trial       Criterion        Change sffhPX\I  
      1     0.42804416    -0.11598818 jm+ V$YBP  
Change in Focus                :      -0.400171 }@d>,1DU  
      2     0.54384387    -0.00018847 `9/0J-7*  
Change in Focus                :       1.018470 d9O:,DKf  
      3     0.44510003    -0.09893230 SOVjEo4'3  
Change in Focus                :      -0.601922 ~gP7s_qr{  
      4     0.18154684    -0.36248550
R]Hz8 _X  
Change in Focus                :       0.920681 'X9AG6K1  
      5     0.28665820    -0.25737414 Te# ]Cn|  
Change in Focus                :       1.253875 &x`&03X  
      6     0.21263372    -0.33139862 rfYP*QQY  
Change in Focus                :      -0.903878 G'u|Q mb1  
      7     0.40051424    -0.14351809 ~i%-WX  
Change in Focus                :      -1.354815 |2O')3p"9  
      8     0.48754161    -0.05649072 j(j#0dXLh  
Change in Focus                :       0.215922 C>^,*7dS  
      9     0.40357468    -0.14045766 iHPUmTus--  
Change in Focus                :       0.281783 4Rx~s7l  
     10     0.26315315    -0.28087919 AcKU^T+  
Change in Focus                :      -1.048393 oz LH]*  
     11     0.26120585    -0.28282649 j_p
`Ng  
Change in Focus                :       1.017611 mjbTy"}"  
     12     0.24033815    -0.30369419 Z:!IX^q;}n  
Change in Focus                :      -0.109292 )i;un.  
     13     0.37164046    -0.17239188 V\0E=M*P  
Change in Focus                :      -0.692430 sm0fAL  
     14     0.48597489    -0.05805744 vv+km+  
Change in Focus                :      -0.662040 _Hc%4I  
     15     0.21462327    -0.32940907 Qlw>+y-i  
Change in Focus                :       1.611296 2HD:JdL  
     16     0.43378226    -0.11025008 K4:  $=  
Change in Focus                :      -0.640081 09'oz*v{#  
     17     0.39321881    -0.15081353 J96uyS
*  
Change in Focus                :       0.914906 9UV9h_.x  
     18     0.20692530    -0.33710703 @Gt`Ds9=  
Change in Focus                :       0.801607 3f"C!l]Xu  
     19     0.51374068    -0.03029165 `{[RjM`  
Change in Focus                :       0.947293 uAUp5XP|Z  
     20     0.38013374    -0.16389860 e?b)p5g  
Change in Focus                :       0.667010 ++b$E&lYU  
w9MoT.kI}  
Number of traceable Monte Carlo files generated: 20 /
2xSNalC  
J/vK6cO\  
Nominal     0.54403234 qw<HY$3=  
Best        0.54384387    Trial     2 Xwt`(h[u  
Worst       0.18154684    Trial     4 [KSH~:h:NR  
Mean        0.35770970 V,Q4n%h1.  
Std Dev     0.11156454 Huc|6~X  
Zyu/|Og  
X3',vey  
Compensator Statistics: Br!9x{q*  
Change in back focus: ]W/>Ldv  
Minimum            :        -1.354815 Ird|C[la  
Maximum            :         1.611296 E$A3|rjnoN  
Mean               :         0.161872 \9/RAY_G  
Standard Deviation :         0.869664 s9@Sd  
l(!/Q|Q|  
90% >       0.20977951               vQ1 v#Z  
80% >       0.22748071               XRxj  W  
50% >       0.38667627               :QPf~\w?  
20% >       0.46553746               (5a1P;_Y  
10% >       0.50064115                uH:YKH':/  
t0Mx!p'T  
End of Run. \vRd}  
WF[bO7:  
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/KO|iNL2  

图片:3.JPG

6@V~0DG  
=^tA_AxVw  
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 V kjuy
K  
P6\6?am  
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                 #oni:]E!m  
80% >       0.22748071                 T~:|!`  
50% >       0.38667627                 om h{0jA0  
20% >       0.46553746                
c>
"c
X&  
10% >       0.50064115 ?OlV"zK  
_zWfI.o  
最后这个数值是MTF值呢，还是MTF的公差？ /Q{P3:k  
tmUFT  
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？？？   2lVHZ\G  
YXo|~p;=Y  
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  : ~/.7l8)  
90% >       0.20977951                 aaD;jxT&M|  
80% >       0.22748071                 #9K-7je;j  
50% >       0.38667627                 yR(x+Gs{]  
20% >       0.46553746                 ?QE,;QtpK  
10% >       0.50064115 6G=j6gK%P  
....... ~ vqa7~}m  

OS8q( 2z?s  
4:gRr   
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ,cNLkoN  
Mode                : Sensitivities ynbuN x*  
Sampling            : 2 >
y,-v
:Vy  
Nominal Criterion   : 0.54403234 eH{[C*  
Test Wavelength     : 0.6328 7Hs%Cc"  
S\;V4@<Kn  
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？ >6?__v]9G  
R~PA1wDZ  
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