[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 l@]Fzl  
02)Ybp6y  

图片:1.JPG

'Mhnu2d  
?}S!8;d  
然后添加了默认公差分析，基本没变 T
'9M  
"{3MXAFe  

图片:2.jpg

$Rn9*OKr  
OAEa+V
 
然后运行分析的结果如下： prB:
E[1  
7HL23Vrk  
Analysis of Tolerances }WF6w+  
XpA|<s  
File : E:\光学设计资料\zemax练习\f500.ZMX F!2VTPm9z  
Title: CK_\K,xVT  
Date : TUE JUN 21 2011 :qV|rih_Q  
4VkJtu5  
Units are Millimeters. F5M{`:/  
All changes are computed using linear differences. ]BTISaL-R  
=/\l=*  
Paraxial Focus compensation only. Hq>rK`  
&4)PW\ioY  
WARNING: Solves should be removed prior to tolerancing. v+dT7*^@  
23opaX5V=  
Mnemonics: 5bsv05=e  
TFRN: Tolerance on curvature in fringes. Tb*Q4:r"  
TTHI: Tolerance on thickness. 2uMSeSx$  
TSDX: Tolerance on surface decentering in x. &ha<pj~  
TSDY: Tolerance on surface decentering in y. W9bpKmc  
TSTX: Tolerance on surface tilt in x (degrees). jO`L:D/C  
TSTY: Tolerance on surface tilt in y (degrees). E~8J<gE  
TIRR: Tolerance on irregularity (fringes). KqNsCT+j  
TIND: Tolerance on Nd index of refraction. gEq6[G  
TEDX: Tolerance on element decentering in x. nE:Wl  
TEDY: Tolerance on element decentering in y. O<XNI(@  
TETX: Tolerance on element tilt in x (degrees). M?kXzb\O  
TETY: Tolerance on element tilt in y (degrees). @v.?z2h  
-Byl~n3*D  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. MW=rX>tE  
maV*+!\  
WARNING: Boundary constraints on compensators will be ignored. .e}`n)z  
\tdYTb.  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm WckWX]};S  
Mode                : Sensitivities B<~BX[  
Sampling            : 2 clM6R  
Nominal Criterion   : 0.54403234 6U]r3 Rr  
Test Wavelength     : 0.6328 )Rj?\ZUR  
x7xQrjE  
~$7YEs)  
Fields: XY Symmetric Angle in degrees Cio(Ptt:  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY |voZ0U  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ESe$6)P  
4X0ku]  
Sensitivity Analysis: ,{Z!T5 |  
/EL3Tt  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| c{jTCkzq  
Type                      Value      Criterion        Change          Value      Criterion        Change 4=|oOIhgb  
Fringe tolerance on surface 1 B;Co`o2  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 _G%kEt_4  
Change in Focus                :      -0.000000                            0.000000 xDmwiVy  
Fringe tolerance on surface 2 X"T)X#:)  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 )xTu|V  
Change in Focus                :       0.000000                            0.000000 0X%#9s~  
Fringe tolerance on surface 3 p,\(j  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 gNh4c{Al9  
Change in Focus                :      -0.000000                            0.000000 l585L3i  
Thickness tolerance on surface 1 
xB}B1H%  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 cn'rBY  
Change in Focus                :       0.000000                            0.000000 *C^TCyBK;  
Thickness tolerance on surface 2 hr g'Z5n  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 (T",6xBSG  
Change in Focus                :       0.000000                           -0.000000 >~T2MlRux  
Decenter X tolerance on surfaces 1 through 3 m\K1Ex  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 >}86#^F  
Change in Focus                :       0.000000                            0.000000 ?nf4K/IjZ!  
Decenter Y tolerance on surfaces 1 through 3 %O>_$ 4q  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Angt=q
 
Change in Focus                :       0.000000                            0.000000 m .^WSy  
Tilt X tolerance on surfaces 1 through 3 (degrees) .?r}3C
h  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 B> zQ[e@t  
Change in Focus                :       0.000000                            0.000000 !Eb!y`jK  
Tilt Y tolerance on surfaces 1 through 3 (degrees) DWU(ld:_  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 IpVtbDW  
Change in Focus                :       0.000000                            0.000000 ~JOC8dO  
Decenter X tolerance on surface 1 PB@jh}  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;GZ'Rb  
Change in Focus                :       0.000000                            0.000000 A&Cs (e  
Decenter Y tolerance on surface 1 -nB. .q  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 qnw8#!%I  
Change in Focus                :       0.000000                            0.000000 ' h|d-p\`9  
Tilt X tolerance on surface (degrees) 1 JiiYl&#  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 EOf*1/Ih  
Change in Focus                :       0.000000                            0.000000 t;lK=m|  
Tilt Y tolerance on surface (degrees) 1  e:6mz\J  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 =5g|7grQ:`  
Change in Focus                :       0.000000                            0.000000 prVqV-S6TY  
Decenter X tolerance on surface 2 q}J Eesf  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,h.hgyt  
Change in Focus                :       0.000000                            0.000000 /ASpAl[J  
Decenter Y tolerance on surface 2 3:gF4(.  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 <
rNz&;m}  
Change in Focus                :       0.000000                            0.000000 <&}N[  
Tilt X tolerance on surface (degrees) 2 qWI8 >my11  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 r5uX?^mJ0  
Change in Focus                :       0.000000                            0.000000 +<c(;Ucl?  
Tilt Y tolerance on surface (degrees) 2 IHe?/oUL"b  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 iMp_1EXe  
Change in Focus                :       0.000000                            0.000000 <*djtO  
Decenter X tolerance on surface 3 *0%G`Q  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 'zYx4&s  
Change in Focus                :       0.000000                            0.000000 +\MGlsMK@.  
Decenter Y tolerance on surface 3 2B]mD-~  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 HO39>:c  
Change in Focus                :       0.000000                            0.000000 P? LpI`f  
Tilt X tolerance on surface (degrees) 3 v?S3G-r  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N
KRH>2,  
Change in Focus                :       0.000000                            0.000000 6Xt c3  
Tilt Y tolerance on surface (degrees) 3 2QV|NQSl  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 }zHG]k,j  
Change in Focus                :       0.000000                            0.000000 lf2(h4[1R  
Irregularity of surface 1 in fringes -2y>X`1Y  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 <VmEXJIk  
Change in Focus                :       0.000000                            0.000000 [u/Wh+  
Irregularity of surface 2 in fringes ~0
1Fp;L/  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 o1u?H4z  
Change in Focus                :       0.000000                            0.000000 &+8cI^kp  
Irregularity of surface 3 in fringes ')j@OO3  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Q E*`#r#e  
Change in Focus                :       0.000000                            0.000000 <0H^2ekd  
Index tolerance on surface 1 Na_O:\x#  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 g}*F"k4j  
Change in Focus                :       0.000000                            0.000000 7.C~ OrGR  
Index tolerance on surface 2 @Yh%.#\i%  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 jftf]n&Z(q  
Change in Focus                :       0.000000                           -0.000000 -<aN$O  
$U}GX'1LZ  
Worst offenders: EY[J;H_b  
Type                      Value      Criterion        Change 7bx!A+, t  
TSTY   2            -0.20000000     0.35349910    -0.19053324  :O{ ZZ  
TSTY   2             0.20000000     0.35349910    -0.19053324 A$o?_  
TSTX   2            -0.20000000     0.35349910    -0.19053324 xX{gm'3UYa  
TSTX   2             0.20000000     0.35349910    -0.19053324 zgA/B{DaC;  
TSTY   1            -0.20000000     0.42678383    -0.11724851 psE&Rx3)  
TSTY   1             0.20000000     0.42678383    -0.11724851 Vw b6QIs  
TSTX   1            -0.20000000     0.42678383    -0.11724851 NEX{vZkgw  
TSTX   1             0.20000000     0.42678383    -0.11724851 SFa~j)9'n  
TSTY   3            -0.20000000     0.42861670    -0.11541563 {~eVZVv  
TSTY   3             0.20000000     0.42861670    -0.11541563 u6~/" _FwY  
wm_o(Z}  
Estimated Performance Changes based upon Root-Sum-Square method: [V.#w|n  
Nominal MTF                 :     0.54403234 y4N=v{EbL  
Estimated change            :    -0.36299231 !;;WS~no3  
Estimated MTF               :     0.18104003 :/FT>UCL  
;Fm7!@u^0  
Compensator Statistics: e'1}5Ky  
Change in back focus: %P-z3 0FHp  
Minimum            :        -0.000000 by0M(h  
Maximum            :         0.000000 0?8{q{ o+  
Mean               :        -0.000000 eh}{\P  
Standard Deviation :         0.000000 t5jZ8&M5]  
8K0@*0  
Monte Carlo Analysis: e2$k %c~  
Number of trials: 20 8iwqy0<  
A>W8^|l6+-  
Initial Statistics: Normal Distribution tu0agSpU  
7.`:Z_  
  Trial       Criterion        Change UBvea(z-#  
      1     0.42804416    -0.11598818 *S=zJyAO  
Change in Focus                :      -0.400171 l<=Y.P_2  
      2     0.54384387    -0.00018847 uPveAK}h  
Change in Focus                :       1.018470 b)Dzau  
      3     0.44510003    -0.09893230 @`Foy  
Change in Focus                :      -0.601922 r__Y{&IO  
      4     0.18154684    -0.36248550 V50FX}i  
Change in Focus                :       0.920681 !`?*zf  
      5     0.28665820    -0.25737414 kA%"-$3  
Change in Focus                :       1.253875 "]0sR  
      6     0.21263372    -0.33139862 $M 1/
74  
Change in Focus                :      -0.903878 *FrlzIAom  
      7     0.40051424    -0.14351809 XhEd9>#  
Change in Focus                :      -1.354815 2[R{IV8e  
      8     0.48754161    -0.05649072 U k*HRudt  
Change in Focus                :       0.215922 XKt">W  
      9     0.40357468    -0.14045766 iN+Tig?c  
Change in Focus                :       0.281783 S8$kxQg  
     10     0.26315315    -0.28087919 2dUVHu= +  
Change in Focus                :      -1.048393 rYYAZ(\8  
     11     0.26120585    -0.28282649 |T@\-8Ok  
Change in Focus                :       1.017611 C|W\qXCqu  
     12     0.24033815    -0.30369419 TwZASn]o  
Change in Focus                :      -0.109292 ^q=D!g  
     13     0.37164046    -0.17239188 bhWH  
Change in Focus                :      -0.692430 iI(7{$y  
     14     0.48597489    -0.05805744 t^zmvPDK  
Change in Focus                :      -0.662040 x O~t  
     15     0.21462327    -0.32940907 Apx
GrCu  
Change in Focus                :       1.611296 9dFSppM  
     16     0.43378226    -0.11025008 qFD#D_O6  
Change in Focus                :      -0.640081 ee|i  
     17     0.39321881    -0.15081353 T2^0Q9E?  
Change in Focus                :       0.914906 N-4k 9l1  
     18     0.20692530    -0.33710703 LCMCpEtY*K  
Change in Focus                :       0.801607 ,AO]4Ec  
     19     0.51374068    -0.03029165 rG*Zp7{  
Change in Focus                :       0.947293 U,wJ8  
     20     0.38013374    -0.16389860 ZH<:YOQ  
Change in Focus                :       0.667010 7jL3mI;n%;  
. w_oWmD  
Number of traceable Monte Carlo files generated: 20 q`8M9-~  
xbv  
Nominal     0.54403234 [spJ%AhV  
Best        0.54384387    Trial     2 5 UQbd8  
Worst       0.18154684    Trial     4 u'BuZF  
Mean        0.35770970 &eHhj9  
Std Dev     0.11156454 DcQ[zdEz+  
ZFAi9M  
"+6:vhP5  
Compensator Statistics: SXW8p>1Jw  
Change in back focus: c[~LI<>ic  
Minimum            :        -1.354815 }Ra'`;D$  
Maximum            :         1.611296 &(]@L\A  
Mean               :         0.161872 dMnJ)R  
Standard Deviation :         0.869664 CAhkv0?8  
)Uv lEG']  
90% >       0.20977951               lj4D:>Ov  
80% >       0.22748071               >K2Md*[P3q  
50% >       0.38667627               t)*MLg<C  
20% >       0.46553746               K5fL{2V?  
10% >       0.50064115                3k J8Wn  
B4 cm_YGE  
End of Run. 'F- wC!  
K38A;=t9
  
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 2$MIA?
A"Y  

图片:3.JPG

PsLMV:O9S  

H~IN<3ko  
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 #=G[~m\  
AI|8E8h+D  
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                 Q]Ymv:M
,  
80% >       0.22748071                 &B</^:  
50% >       0.38667627                 BrdHTk= Vy  
20% >       0.46553746                 `kn 'RZR  
10% >       0.50064115 L"w% ew  

#bqc}h9  
最后这个数值是MTF值呢，还是MTF的公差？ x:h0/f  
\,-t]$9  
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？？？   ]}3AP!:  
CnJrJ>l  
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  : aR3R,6ec  
90% >       0.20977951                 -Wp69DP6q  
80% >       0.22748071                 K4]42#
  
50% >       0.38667627                 +(v<_#wR-  
20% >       0.46553746                 8db J'  
10% >       0.50064115 H3$~S '  
....... pF)}<<C  

jwm2ZJ
W  
fs8nYgv|Q  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   h8IjTd]z{$  
Mode                : Sensitivities =5NM =K  
Sampling            : 2 WM& k  
Nominal Criterion   : 0.54403234 xM ]IU <  
Test Wavelength     : 0.6328 Q.5C
$I  
k=t\  
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？ {@T8i^EI  
"=cWcztiP  
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