[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 fab'\|Y   
"6B7EH  

图片:1.JPG

g^AQBF  
%TB(E<p`  
然后添加了默认公差分析，基本没变 K\Ea\b[  
(]|h6aI'}  

图片:2.jpg

64s;EC  
&m5zd$6  
然后运行分析的结果如下： E5k
)~P`|  
o/5-T4  
Analysis of Tolerances O'y8q[2KE  
18X@0e  
File : E:\光学设计资料\zemax练习\f500.ZMX v}B%:1P4  
Title: S;|:ci<[=  
Date : TUE JUN 21 2011 vQAFgG  
^h(wi`i  
Units are Millimeters. !l:GrT8J  
All changes are computed using linear differences. e+ xQ\LH  
$|K d<wv  
Paraxial Focus compensation only. l$42MRi/  
9U8M|W|d  
WARNING: Solves should be removed prior to tolerancing. yI0bSu<j-  
9t`;~)o  
Mnemonics: .tBlGMcN  
TFRN: Tolerance on curvature in fringes. jLVJ+mu  
TTHI: Tolerance on thickness. >I5:@6 Z  
TSDX: Tolerance on surface decentering in x. [
$N_YcN?  
TSDY: Tolerance on surface decentering in y. aSL`yuXu  
TSTX: Tolerance on surface tilt in x (degrees). Q$jEmmm%V[  
TSTY: Tolerance on surface tilt in y (degrees). aZfMeW  
TIRR: Tolerance on irregularity (fringes). _;lw,;ftA  
TIND: Tolerance on Nd index of refraction. Oy6fl'FIt  
TEDX: Tolerance on element decentering in x. / 3A6xPOg  
TEDY: Tolerance on element decentering in y. v4$/LUJZp  
TETX: Tolerance on element tilt in x (degrees). @6u/)>rI  
TETY: Tolerance on element tilt in y (degrees). kaG/8G(  
mU'<:gL+  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. h ><Sp*z_V  
LPk@t^[  
WARNING: Boundary constraints on compensators will be ignored. TP }a9-9?  
36d nS>4  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4S_ -9&z  
Mode                : Sensitivities 8tY>%A~^z  
Sampling            : 2 @AyteHK  
Nominal Criterion   : 0.54403234 a#oROb-*~  
Test Wavelength     : 0.6328 |s8N  
&|v)
 
4{VO:(geZ  
Fields: XY Symmetric Angle in degrees >{#JIG.  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY .RD<]BxJ  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 4l D$'`  
(In{GA7;  
Sensitivity Analysis: z;OYPGvkw  
tgRj8 @  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| j=\h|^gA  
Type                      Value      Criterion        Change          Value      Criterion        Change B(
Sy.n  
Fringe tolerance on surface 1 %X}ZX|{O  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $d?+\r:I{,  
Change in Focus                :      -0.000000                            0.000000 G0FzXtu)q  
Fringe tolerance on surface 2 BK$y>= `  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 j3-YZKpg  
Change in Focus                :       0.000000                            0.000000 +UzQJt/>>  
Fringe tolerance on surface 3 Q>niJ'7WF  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 i'~-\F!  
Change in Focus                :      -0.000000                            0.000000 $|4@Zx4vf  
Thickness tolerance on surface 1 86&M Zdv6  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 !_I1=yi  
Change in Focus                :       0.000000                            0.000000 (vXr2Z<l  
Thickness tolerance on surface 2 EF
/d7  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 UG| /Px ]  
Change in Focus                :       0.000000                           -0.000000 PKm|?kn{0(  
Decenter X tolerance on surfaces 1 through 3 W.wPy@yi  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 q0sf\|'<}  
Change in Focus                :       0.000000                            0.000000 8}/DD^M  
Decenter Y tolerance on surfaces 1 through 3 Vk5Z[w a  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 #w$Y
1bjn  
Change in Focus                :       0.000000                            0.000000 ;(Yb9Mr)z  
Tilt X tolerance on surfaces 1 through 3 (degrees) A40DbD\^ad  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 o3WOp80hz  
Change in Focus                :       0.000000                            0.000000 bM W|:rn  
Tilt Y tolerance on surfaces 1 through 3 (degrees) RTtKf i}  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "N4^ ^~s  
Change in Focus                :       0.000000                            0.000000 yOM/UdWq  
Decenter X tolerance on surface 1 yD[d%w  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 c:Ua\$)u3,  
Change in Focus                :       0.000000                            0.000000 +qi& ?}  
Decenter Y tolerance on surface 1 g[xoS\d  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 kk4 |4  
Change in Focus                :       0.000000                            0.000000 ucCf%T\:  
Tilt X tolerance on surface (degrees) 1 t}t(fJHY`  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %VHy?!/  
Change in Focus                :       0.000000                            0.000000 4&)sROjV=  
Tilt Y tolerance on surface (degrees) 1 '|yx
B')  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Bfb~<rs[  
Change in Focus                :       0.000000                            0.000000 }U]jy  
Decenter X tolerance on surface 2 ,05PYBc3  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807
c r=Q39{  
Change in Focus                :       0.000000                            0.000000 =vThtl/azD  
Decenter Y tolerance on surface 2 MGdzrcF  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 K)SWM3r  
Change in Focus                :       0.000000                            0.000000 I| TNo-!$  
Tilt X tolerance on surface (degrees) 2 r[9m-#)>  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 J"gMm@#C4  
Change in Focus                :       0.000000                            0.000000 !
$)reaS  
Tilt Y tolerance on surface (degrees) 2 .ARYCTyG  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 bWyimr&B  
Change in Focus                :       0.000000                            0.000000 "O$bq::(]e  
Decenter X tolerance on surface 3 [8ZDMe  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 q` S ~w  
Change in Focus                :       0.000000                            0.000000 $v>q'8d  
Decenter Y tolerance on surface 3 5SFr E`  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 xj5TnE9^  
Change in Focus                :       0.000000                            0.000000 ^sv|m"  
Tilt X tolerance on surface (degrees) 3 xU'z>y4V$  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \p!UY3'  
Change in Focus                :       0.000000                            0.000000 Fg
dnX2s J  
Tilt Y tolerance on surface (degrees) 3 \p^V~fy7rU  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 5:PS74/  
Change in Focus                :       0.000000                            0.000000 s,R:D).  
Irregularity of surface 1 in fringes u%-]-:c  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 *qpFtBg  
Change in Focus                :       0.000000                            0.000000 n"iS[uj,  
Irregularity of surface 2 in fringes #p+iwW-  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 N^ +q^iW  
Change in Focus                :       0.000000                            0.000000 C-pR$WM:HN  
Irregularity of surface 3 in fringes ~[H8R|j "  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 7i5B=y7b  
Change in Focus                :       0.000000                            0.000000 5(~Lr3v0  
Index tolerance on surface 1 XtCIUC{r,  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 (bm^R-SbB  
Change in Focus                :       0.000000                            0.000000 Zo UeLU  
Index tolerance on surface 2 SIK:0>yK"  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 eKLvBa-{@  
Change in Focus                :       0.000000                           -0.000000 xMbgBx4+  
4!sK>l!  
Worst offenders: ~+.=  
Type                      Value      Criterion        Change w4fKh  
TSTY   2            -0.20000000     0.35349910    -0.19053324 D5gj*/"  
TSTY   2             0.20000000     0.35349910    -0.19053324 o Mz
{j:  
TSTX   2            -0.20000000     0.35349910    -0.19053324 [G 9Pb)  
TSTX   2             0.20000000     0.35349910    -0.19053324 2poo@]M/  
TSTY   1            -0.20000000     0.42678383    -0.11724851 f@}>:x  
TSTY   1             0.20000000     0.42678383    -0.11724851 81nD:]7  
TSTX   1            -0.20000000     0.42678383    -0.11724851 [aSuEu?mC  
TSTX   1             0.20000000     0.42678383    -0.11724851 9]Jv >_W*  
TSTY   3            -0.20000000     0.42861670    -0.11541563 ?}`-?JB1  
TSTY   3             0.20000000     0.42861670    -0.11541563 ^%!{qAp}Z  
!B`z|#  
Estimated Performance Changes based upon Root-Sum-Square method: NV5qF/<M  
Nominal MTF                 :     0.54403234 /? %V% n  
Estimated change            :    -0.36299231 sOqFEvzo1%  
Estimated MTF               :     0.18104003 9!AvsC9  
~d7t\
S  
Compensator Statistics: Y"
=8wNbr  
Change in back focus: [IHo ~  
Minimum            :        -0.000000 v4e4,Nt  
Maximum            :         0.000000 `BmnXWMgx  
Mean               :        -0.000000 6UC
F w>  
Standard Deviation :         0.000000 `E|i
8M3g  
1$RJzHS  
Monte Carlo Analysis: &~2m@X(o  
Number of trials: 20 :E}
y Pcw  
!<TkX/O  
Initial Statistics: Normal Distribution ]x)!Kd2>  
!h1:AW_iz  
  Trial       Criterion        Change "U^m~N9k{  
      1     0.42804416    -0.11598818 rp\`uj*D  
Change in Focus                :      -0.400171 ]RAh['u|  
      2     0.54384387    -0.00018847 `M~R4lr  
Change in Focus                :       1.018470 g$]WKy(D  
      3     0.44510003    -0.09893230 s(py7{ ^K  
Change in Focus                :      -0.601922 )bM,>x  
      4     0.18154684    -0.36248550 p2Khfl6-  
Change in Focus                :       0.920681
Muwlehuq  
      5     0.28665820    -0.25737414 4T3Z9KD!8  
Change in Focus                :       1.253875 yKhI&  
      6     0.21263372    -0.33139862 1j<uFhi>  
Change in Focus                :      -0.903878 {m!5IR  
      7     0.40051424    -0.14351809 uxyj6(  
Change in Focus                :      -1.354815 j-d&4,a:c  
      8     0.48754161    -0.05649072
e?XFtIj$  
Change in Focus                :       0.215922 e6MBy\*n  
      9     0.40357468    -0.14045766 .Wt3|?\=nd  
Change in Focus                :       0.281783 U[MeK)*  
     10     0.26315315    -0.28087919 %|JiFDjp  
Change in Focus                :      -1.048393 Sm<*TH!\n_  
     11     0.26120585    -0.28282649 =
4`wYh  
Change in Focus                :       1.017611 7j)ky2r#  
     12     0.24033815    -0.30369419 JPn)Op6  
Change in Focus                :      -0.109292 U;/2\Ii  
     13     0.37164046    -0.17239188 3Ewdu
 
Change in Focus                :      -0.692430 F.U@8lr  
     14     0.48597489    -0.05805744 |Uics:cQC  
Change in Focus                :      -0.662040 .K84"Gdx  
     15     0.21462327    -0.32940907 T1qbb*  
Change in Focus                :       1.611296 s! 2[zJ19p  
     16     0.43378226    -0.11025008 I;Mm+5A  
Change in Focus                :      -0.640081 |&"aZ!Kn  
     17     0.39321881    -0.15081353 \dCGu~bT  
Change in Focus                :       0.914906 vyDxX  
     18     0.20692530    -0.33710703 |K_%]1*riC  
Change in Focus                :       0.801607 i{m
!v6j:  
     19     0.51374068    -0.03029165 ?o[h$7`o6  
Change in Focus                :       0.947293 |dQz(z&6{5  
     20     0.38013374    -0.16389860 m"rht:v5  
Change in Focus                :       0.667010 yZ{yzv'D&  
oi|N8a2R  
Number of traceable Monte Carlo files generated: 20 PwW$=M{\.  
!#pc@(rE  
Nominal     0.54403234 2$Xof  
Best        0.54384387    Trial     2 C jf<,x$  
Worst       0.18154684    Trial     4 7Tk//By7  
Mean        0.35770970 9;Z{++z  
Std Dev     0.11156454 MlYm\x8{M  
F(n<:TvlK  
Hrpz4E%\Aw  
Compensator Statistics: +r'&6Me!  
Change in back focus:
b9rQQS  
Minimum            :        -1.354815 |;NfH|43;  
Maximum            :         1.611296 2Snb+,o2  
Mean               :         0.161872 Jy/< {7j  
Standard Deviation :         0.869664 @*|VWHR  
9V1d`]tP  
90% >       0.20977951               nBp6uNK[  
80% >       0.22748071               @=l6zd@  
50% >       0.38667627               ]fzXrN_  
20% >       0.46553746               "<+~uz  
10% >       0.50064115                s8&q8r7%  
N#Rb8&G)b  
End of Run. !b_(|~7Lc  
!*Is0``  
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 #M|lBYdW}  

图片:3.JPG

4ams~  
;Tr,BfV|Bf  
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 D(ItNMcKu  
<c[\\ :Hh*  
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                
H9)n<r  
80% >       0.22748071                 I;NW!"pU  
50% >       0.38667627                 I
Wu=z!mO  
20% >       0.46553746                 53{\H&q  
10% >       0.50064115 N\*oL*[j  
I`{*QU  
最后这个数值是MTF值呢，还是MTF的公差？ {WV"]O8IV  
$6mShp9(  
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？？？   +]cf/_8+s  
*|Vf1R]  
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  : h>!h|Ma  
90% >       0.20977951                 V]--d33/a  
80% >       0.22748071                 0J'^<GTL  
50% >       0.38667627                 ?<t?G  
20% >       0.46553746                 5/P. 4<c7  
10% >       0.50064115 ]~]TZb  
....... F'[Y.tA ,#  

#9TL5-1y  
(nLzWvN  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   uSXnf  
Mode                : Sensitivities EFDmNud`Q  
Sampling            : 2  cRKLyb  
Nominal Criterion   : 0.54403234 ?a,#p  
Test Wavelength     : 0.6328 &V axv$v}  
vWmt<E|e  
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？ ASEKP(]v  
GTbV5{Ss  
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