[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 z}" Xt=G?  
<L72nwcK  

图片:1.JPG

qOV6Kh)  
{bSi3oI  
然后添加了默认公差分析，基本没变 6uU2+I  
W+'|zhn  

图片:2.jpg

/kAu&}  
3+%c*}KC~  
然后运行分析的结果如下： .!\NM&E  
jM E==)Y  
Analysis of Tolerances <]u~;e57  
]Y%?kQ^  
File : E:\光学设计资料\zemax练习\f500.ZMX <oE(I)r4,  
Title: Iaq7<$XU  
Date : TUE JUN 21 2011 >|Hd*pg))  
U(.3[x  
Units are Millimeters. &s|&cT  
All changes are computed using linear differences. Z"# /,?|3@  
kc3dWWPe  
Paraxial Focus compensation only. -L&FguoVB  
k-v@sb24_  
WARNING: Solves should be removed prior to tolerancing. H'L~8>  
O~r.sJ}  
Mnemonics: J&xH"U  
TFRN: Tolerance on curvature in fringes. QT5,_+ho  
TTHI: Tolerance on thickness. PLi[T4u  
TSDX: Tolerance on surface decentering in x. &J\V !uVo  
TSDY: Tolerance on surface decentering in y. a-t}L{~  
TSTX: Tolerance on surface tilt in x (degrees). 
Y
lZe  
TSTY: Tolerance on surface tilt in y (degrees). BCE}Er&  
TIRR: Tolerance on irregularity (fringes). @bN`+DC!<  
TIND: Tolerance on Nd index of refraction. Z|FWQ8gZ4m  
TEDX: Tolerance on element decentering in x. 6S;-fj  
TEDY: Tolerance on element decentering in y. ^_5Nh^  
TETX: Tolerance on element tilt in x (degrees). 8?lp:kM  
TETY: Tolerance on element tilt in y (degrees). wX3x.@!:  
=%4vrY `  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. z;dD }Fo  
X]?qns7  
WARNING: Boundary constraints on compensators will be ignored. vGK'U*gGD  
(f^K\7HM  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm  xZ*.@Pkr  
Mode                : Sensitivities [jD.l;jF  
Sampling            : 2 `&.]>H)N*  
Nominal Criterion   : 0.54403234 S$!)Uc\)A  
Test Wavelength     : 0.6328 !H`! KBW  
#6[7q6{4  
!N4?>[E  
Fields: XY Symmetric Angle in degrees 0L "+,  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY z@lUaMm:F  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 &></l| hY  
1D42+
cy  
Sensitivity Analysis: /7$3RV(  
k!gf
t'iU  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 7|A9  
Type                      Value      Criterion        Change          Value      Criterion        Change SBBDlr^P  
Fringe tolerance on surface 1 kKV`9&d
Ze  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 `ySm
zp  
Change in Focus                :      -0.000000                            0.000000 
VO|2  
Fringe tolerance on surface 2 -saisH6  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 p{knQ],   
Change in Focus                :       0.000000                            0.000000 'Cq
WF"  
Fringe tolerance on surface 3 5B[kZ?>  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 -5Qsc/s&  
Change in Focus                :      -0.000000                            0.000000 2;@#i*\Y  
Thickness tolerance on surface 1 MLV_I4o  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 CU3[{a  
Change in Focus                :       0.000000                            0.000000 O`nrXC{  
Thickness tolerance on surface 2 %Lec\(-4L  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 $V$|"KRcs  
Change in Focus                :       0.000000                           -0.000000 nRpZ;X)'.  
Decenter X tolerance on surfaces 1 through 3 o|\0IG(\  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 LQ5WS  
Change in Focus                :       0.000000                            0.000000 ]XX8l:+  
Decenter Y tolerance on surfaces 1 through 3 *5$$C&@o9  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :T5p6:  
Change in Focus                :       0.000000                            0.000000 _yQ*  
Tilt X tolerance on surfaces 1 through 3 (degrees) <Z^t^ O  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 qRMH[F$`  
Change in Focus                :       0.000000                            0.000000 @D!KFJ  
Tilt Y tolerance on surfaces 1 through 3 (degrees) &8R%W"<K  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gkdd#Nrk  
Change in Focus                :       0.000000                            0.000000 >;S/$  
Decenter X tolerance on surface 1 a}3sG_(Y  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $42C4I*E  
Change in Focus                :       0.000000                            0.000000 Py$*c  
Decenter Y tolerance on surface 1 k^3|A3A  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "^j& ^sA+  
Change in Focus                :       0.000000                            0.000000 r2A(GUz  
Tilt X tolerance on surface (degrees) 1 3%Jg' Tr+  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 5b9v
`6Kq  
Change in Focus                :       0.000000                            0.000000 i]{M G'tg  
Tilt Y tolerance on surface (degrees) 1 jHPJk8@y  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 V\8vJ3.YV  
Change in Focus                :       0.000000                            0.000000 IxwOzpr  
Decenter X tolerance on surface 2 K'[H`x^  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 (`}O!;/E}  
Change in Focus                :       0.000000                            0.000000 )--v>*,V  
Decenter Y tolerance on surface 2 %C*oy$.  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 y0vo-)E]-]  
Change in Focus                :       0.000000                            0.000000 >#z*gCO5,  
Tilt X tolerance on surface (degrees) 2 wy5vn?T@  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0Zkb}F2-  
Change in Focus                :       0.000000                            0.000000 Ug=8:a(U.  
Tilt Y tolerance on surface (degrees) 2 k~WX6rEJ  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 BJDe1W3;'  
Change in Focus                :       0.000000                            0.000000 EB'(%dH  
Decenter X tolerance on surface 3 ^\kv>WBE  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 W/U&w.$  
Change in Focus                :       0.000000                            0.000000 S/CT;M@W  
Decenter Y tolerance on surface 3 _K{hq<g  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 *V(TNLIh;  
Change in Focus                :       0.000000                            0.000000 '`^<*;w  
Tilt X tolerance on surface (degrees) 3 L*tn>AO  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 :UmY|=v?t  
Change in Focus                :       0.000000                            0.000000 :&X
y#.un  
Tilt Y tolerance on surface (degrees) 3 5KJN](x+  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 iQpKcBx  
Change in Focus                :       0.000000                            0.000000 )P\Vd #  
Irregularity of surface 1 in fringes [nBlHI;&  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 HABMFv  
Change in Focus                :       0.000000                            0.000000 Eh;SH^&6  
Irregularity of surface 2 in fringes 2`,{IHu*!  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 c
;l d  
Change in Focus                :       0.000000                            0.000000 xe[Cuy$P  
Irregularity of surface 3 in fringes _@0>yMZ^  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 T!eb=oy  
Change in Focus                :       0.000000                            0.000000 j;eR9jI$T  
Index tolerance on surface 1 z8+3/jLN0B  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 SlvQ)
jw%  
Change in Focus                :       0.000000                            0.000000 v/6QE;BY&Q  
Index tolerance on surface 2 /)?]
vKMiI  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ('!90  
Change in Focus                :       0.000000                           -0.000000 X"<t3l(+  
a?%X9 +1A  
Worst offenders: z-nhL=  
Type                      Value      Criterion        Change +.MHI  
TSTY   2            -0.20000000     0.35349910    -0.19053324 A][\L[8X  
TSTY   2             0.20000000     0.35349910    -0.19053324 SLRQ3<0W_  
TSTX   2            -0.20000000     0.35349910    -0.19053324 O [GG<Um  
TSTX   2             0.20000000     0.35349910    -0.19053324  lTsl=  
TSTY   1            -0.20000000     0.42678383    -0.11724851 `V[{(&?,n  
TSTY   1             0.20000000     0.42678383    -0.11724851 niY9`8  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ;cI
s$  
TSTX   1             0.20000000     0.42678383    -0.11724851 RP&H9>  
TSTY   3            -0.20000000     0.42861670    -0.11541563 p;Kw$fQ?  
TSTY   3             0.20000000     0.42861670    -0.11541563 OL&ku &J_  
!u)veh3x  
Estimated Performance Changes based upon Root-Sum-Square method: :.Vn  
Nominal MTF                 :     0.54403234 3=V79&  
Estimated change            :    -0.36299231 4'bup h1(  
Estimated MTF               :     0.18104003 bY7d  
Fn4i[|W42  
Compensator Statistics: H `Fe|6I&  
Change in back focus: 75}BI&t3k  
Minimum            :        -0.000000 EI6K0{'&X  
Maximum            :         0.000000 "1_eZ`  
Mean               :        -0.000000 SUxz &xH  
Standard Deviation :         0.000000 62Yi1<kV@  
QcG4~DEX
4  
Monte Carlo Analysis: he;;p="!*  
Number of trials: 20 J
SQNx2VqQ  
IBr?6_\%"4  
Initial Statistics: Normal Distribution #WlIH7J8Tc  
h\
afO  
  Trial       Criterion        Change TG'_1m*$  
      1     0.42804416    -0.11598818 -4{sr| lm  
Change in Focus                :      -0.400171 :Zl@4}  
      2     0.54384387    -0.00018847 _M= \s>;G  
Change in Focus                :       1.018470 w$4fS
 
      3     0.44510003    -0.09893230 @D&VOJV  
Change in Focus                :      -0.601922 '+^HeM^;  
      4     0.18154684    -0.36248550 %{g<{\@4(;  
Change in Focus                :       0.920681 ,Hn{nVU1R=  
      5     0.28665820    -0.25737414 Z?Y14L~%  
Change in Focus                :       1.253875 C]K|;VQ  
      6     0.21263372    -0.33139862 gq4le=,v  
Change in Focus                :      -0.903878 smW 7zGE  
      7     0.40051424    -0.14351809 _U;z@  
Change in Focus                :      -1.354815 B uV@w-|  
      8     0.48754161    -0.05649072 a,IE;5kG  
Change in Focus                :       0.215922 \wqi_[A  
      9     0.40357468    -0.14045766 Q)S0z2
 
Change in Focus                :       0.281783 ]Sg4>tp  
     10     0.26315315    -0.28087919 f}b= FV{  
Change in Focus                :      -1.048393 JlJy3L8L  
     11     0.26120585    -0.28282649 FP=%e]vJ  
Change in Focus                :       1.017611 =m6;]16D  
     12     0.24033815    -0.30369419 cLn&b}8'  
Change in Focus                :      -0.109292 7<DlA>(oUX  
     13     0.37164046    -0.17239188 .^0@^%Wi  
Change in Focus                :      -0.692430 5]
DgfwX  
     14     0.48597489    -0.05805744 `8xt!8Z$  
Change in Focus                :      -0.662040 fF37P8Ir  
     15     0.21462327    -0.32940907 Svj%O(  
Change in Focus                :       1.611296 \?A 7{IY  
     16     0.43378226    -0.11025008 nn!W-Bsqjh  
Change in Focus                :      -0.640081 FjD`bhw-  
     17     0.39321881    -0.15081353 Ub!MyXd{q  
Change in Focus                :       0.914906 :clMO|  
     18     0.20692530    -0.33710703 0w}OE8uq  
Change in Focus                :       0.801607 +x$GwX  
     19     0.51374068    -0.03029165 1:5jUUL8  
Change in Focus                :       0.947293 zI77#AUM  
     20     0.38013374    -0.16389860 P 0v&*y3Y  
Change in Focus                :       0.667010 '=}F}[d"kk  
zX{K\yp  
Number of traceable Monte Carlo files generated: 20 Xi`K`Cu+  
Kk|uN#m  
Nominal     0.54403234 7xidBVx  
Best        0.54384387    Trial     2 v?Q&06PMRc  
Worst       0.18154684    Trial     4 FYh+G-Y#  
Mean        0.35770970 mb_*FJB-_  
Std Dev     0.11156454 QyN<o{\FD!  
R:8\z0"L*  
p\T.l<p  
Compensator Statistics: >DqV^%2l  
Change in back focus: luAmq+  
Minimum            :        -1.354815 f/Cf2 K  
Maximum            :         1.611296
z4 4(  
Mean               :         0.161872 |E)-9JSRy  
Standard Deviation :         0.869664 >.^/Z/[.L  
H<bYm]a%  
90% >       0.20977951               ;^VLx)q  
80% >       0.22748071               CYD&#+o  
50% >       0.38667627               ha_&U@w  
20% >       0.46553746               ZdQt!  
10% >       0.50064115                <pzCpF<  
hJ[Z~PC\T0  
End of Run. `rEu8u  
AP*Z0OFE  
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 \!D<u'n  

图片:3.JPG

Hxe!68{aR  
6Ap-J~4  
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{QN$Qkn  
?86q8E3;&  
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                 t]dtBt].:  
80% >       0.22748071                 fjD/<`}v  
50% >       0.38667627                 @D$^- S6  
20% >       0.46553746                 yDmNPk/  
10% >       0.50064115 O}$@|w(8;  
hn-+]Y:  
最后这个数值是MTF值呢，还是MTF的公差？ J/OG\}  
>ucVrLm,X  
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？？？   =
rH' \7T  
!'yCB9]O  
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  : VuU{7:  
90% >       0.20977951                 3?n2/p 7=  
80% >       0.22748071                 w6Owfq'v  
50% >       0.38667627                 fV>12ici  
20% >       0.46553746                 [9-&Lq_ g  
10% >       0.50064115 O7})1|>1  
....... 2#y-3y<G  

neLQ>WT L  
^yl)c \`  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Cih~cwE  
Mode                : Sensitivities gfPR3%EXs  
Sampling            : 2 F<YXkG4pO  
Nominal Criterion   : 0.54403234 IEP^u `}  
Test Wavelength     : 0.6328 VfFXH,j  
S.! n35  
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？ r9vO(m~  
|z 8Wh  
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