[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 h-].?X,]Q  
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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 -r@fLkwg  
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图片:2.jpg

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然后运行分析的结果如下： "3(""0Q  
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Analysis of Tolerances ~k^rIjR  
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File : E:\光学设计资料\zemax练习\f500.ZMX lmi,P-Q  
Title:  LP-~;  
Date : TUE JUN 21 2011 T~8==Z{[  
-GCC  
Units are Millimeters. MHeUh[%(  
All changes are computed using linear differences. w9<<|ZaU  
{p[{5k 0  
Paraxial Focus compensation only. Ti$G2dBO  
2Tec#eYe  
WARNING: Solves should be removed prior to tolerancing. aMe]6cWHV>  
r'/&{?Je/  
Mnemonics: Kkcb'a
DR  
TFRN: Tolerance on curvature in fringes.
K|,P  
TTHI: Tolerance on thickness. =PYfk6j9  
TSDX: Tolerance on surface decentering in x. Y3=5J\d!a  
TSDY: Tolerance on surface decentering in y. H=RzY-\a%  
TSTX: Tolerance on surface tilt in x (degrees). u1a0w  
TSTY: Tolerance on surface tilt in y (degrees). /Jj7+?  
TIRR: Tolerance on irregularity (fringes). %A64AJZ  
TIND: Tolerance on Nd index of refraction. <:/Lap#D^  
TEDX: Tolerance on element decentering in x.
Ne#FBRu5  
TEDY: Tolerance on element decentering in y. M(8dK
j1+  
TETX: Tolerance on element tilt in x (degrees). h;cl+c|B  
TETY: Tolerance on element tilt in y (degrees). Q]$gw,H"6  
xY4g2Q J  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. IJa6W`}  
fIe';a  
WARNING: Boundary constraints on compensators will be ignored.  >M~1{  
D+m#_'ocL  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm A0X'|4I  
Mode                : Sensitivities VaP9&tWXj  
Sampling            : 2 epN>;e z  
Nominal Criterion   : 0.54403234 uPCzs$R  
Test Wavelength     : 0.6328 6$/Z.8  
3E9 )~$  
M^IEu}  
Fields: XY Symmetric Angle in degrees K|L&mL&8  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ncTPFv H5  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 bUvVt3cm  
J([Y4Em5  
Sensitivity Analysis: Ig&H0S  
k_;g-r,  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| eJbZA&:  
Type                      Value      Criterion        Change          Value      Criterion        Change I+2#k\y  
Fringe tolerance on surface 1 gy5^JL  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1.24ZX  
Change in Focus                :      -0.000000                            0.000000 T*o!#E.  
Fringe tolerance on surface 2 ~:FF"T>  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 5 EhOvt8  
Change in Focus                :       0.000000                            0.000000 La>fvm  
Fringe tolerance on surface 3 ^_\S)P2c  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 TOT#l6yqdd  
Change in Focus                :      -0.000000                            0.000000 u,RR|/@  
Thickness tolerance on surface 1 .*}!XKp0j  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Nk63F&J7e  
Change in Focus                :       0.000000                            0.000000 f \ E9u}  
Thickness tolerance on surface 2 ='A VI-go5  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 H!'Ek[s+  
Change in Focus                :       0.000000                           -0.000000 3d>8~ANi=%  
Decenter X tolerance on surfaces 1 through 3 wqxChTbs  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 YCl&}/.pA  
Change in Focus                :       0.000000                            0.000000 1X5M
knA  
Decenter Y tolerance on surfaces 1 through 3 3vXa#f>P<  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 |N5r_V  
Change in Focus                :       0.000000                            0.000000 h;Hg/jv  
Tilt X tolerance on surfaces 1 through 3 (degrees) F(O"S@  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 joz0D!-"#  
Change in Focus                :       0.000000                            0.000000 3</W}]$)p  
Tilt Y tolerance on surfaces 1 through 3 (degrees) s(Y2]X4 (  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Ab #}BHI  
Change in Focus                :       0.000000                            0.000000 >:Y"DX-  
Decenter X tolerance on surface 1 Nl]_Ie6  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ~P7zg!p/q  
Change in Focus                :       0.000000                            0.000000 B>}B{qi|  
Decenter Y tolerance on surface 1 aT4I sPA?_  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 4A0v>G`E*#  
Change in Focus                :       0.000000                            0.000000 YsO3( HS  
Tilt X tolerance on surface (degrees) 1 3AcS$.G  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 a B$x(8pP@  
Change in Focus                :       0.000000                            0.000000 ]z O6ESH  
Tilt Y tolerance on surface (degrees) 1 q2b>Z6!5  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %i6/= 'u  
Change in Focus                :       0.000000                            0.000000 bMq)
[8,N  
Decenter X tolerance on surface 2 j/t
)=c  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Tnv,$KOhs  
Change in Focus                :       0.000000                            0.000000 s%QCdU ]  
Decenter Y tolerance on surface 2 |.z4
VJi4  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `pb=y}  
Change in Focus                :       0.000000                            0.000000 w=_q<1a  
Tilt X tolerance on surface (degrees) 2 ToK=`0#LNK  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 -zg 6^f_pW  
Change in Focus                :       0.000000                            0.000000 c(b2f-0!4  
Tilt Y tolerance on surface (degrees) 2 f AY(ro9Q(  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *(s0X[-  
Change in Focus                :       0.000000                            0.000000 kQF3DR$,B  
Decenter X tolerance on surface 3 5O(U1 *  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 -lqD
  
Change in Focus                :       0.000000                            0.000000 5dX /<  
Decenter Y tolerance on surface 3 EfB.K}b^  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 y@@h)P#  
Change in Focus                :       0.000000                            0.000000 -FF#+Z$  
Tilt X tolerance on surface (degrees) 3 :HM~!7e  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 >Hu3Guik]  
Change in Focus                :       0.000000                            0.000000 Aj8zFt]  
Tilt Y tolerance on surface (degrees) 3 63(XCO  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 i#NtiZ.t=  
Change in Focus                :       0.000000                            0.000000 5yyc0UG  
Irregularity of surface 1 in fringes 5)Z:J  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 q[Tl#*P?y  
Change in Focus                :       0.000000                            0.000000 -_xTs(;|8  
Irregularity of surface 2 in fringes n&!q9CR`  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Mtl`A'KQ/K  
Change in Focus                :       0.000000                            0.000000 I<Cm$8O?  
Irregularity of surface 3 in fringes 8=@f lK  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 :%g
M Xsb  
Change in Focus                :       0.000000                            0.000000 PWeWz(]0Z4  
Index tolerance on surface 1 O=vD6@QI  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 d}aMdIF!e  
Change in Focus                :       0.000000                            0.000000 {e$@i  
Index tolerance on surface 2 *~~J1.ja>  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 I s|_  
Change in Focus                :       0.000000                           -0.000000 Ey.%: O-Dv  
Scug wSB  
Worst offenders: X(O:y^sX}  
Type                      Value      Criterion        Change a ]:xsJ~  
TSTY   2            -0.20000000     0.35349910    -0.19053324 _%3p&1ld  
TSTY   2             0.20000000     0.35349910    -0.19053324 c'XSs  
TSTX   2            -0.20000000     0.35349910    -0.19053324 i%GiWanG  
TSTX   2             0.20000000     0.35349910    -0.19053324 2%v6h  
TSTY   1            -0.20000000     0.42678383    -0.11724851 guVuO  
TSTY   1             0.20000000     0.42678383    -0.11724851 fRxn,HyV  
TSTX   1            -0.20000000     0.42678383    -0.11724851 )gz]F_  
TSTX   1             0.20000000     0.42678383    -0.11724851 D^xg2D  
TSTY   3            -0.20000000     0.42861670    -0.11541563 :]4s;q:m  
TSTY   3             0.20000000     0.42861670    -0.11541563 r:PYAb=g  
Em4'b1mDX%  
Estimated Performance Changes based upon Root-Sum-Square method: m
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Nominal MTF                 :     0.54403234 g\9&L/xDN  
Estimated change            :    -0.36299231 }+}Cl T  
Estimated MTF               :     0.18104003 ecx_&J@D  
bxPJ5oT  
Compensator Statistics: CfO{KiM(2  
Change in back focus: pI.~j]*:{  
Minimum            :        -0.000000 :`K2?;DC8  
Maximum            :         0.000000 vM-kk:n7f  
Mean               :        -0.000000 ]N,'3`&::  
Standard Deviation :         0.000000 LN)yQ-  
>sdF:(JV&  
Monte Carlo Analysis: P8#_E{f  
Number of trials: 20 zJh!Q**  
Q,:h`%V  
Initial Statistics: Normal Distribution ;pS+S0U   
G({5LjgW  
  Trial       Criterion        Change m;nH v  
      1     0.42804416    -0.11598818  )y6  
Change in Focus                :      -0.400171 C8do8$  
      2     0.54384387    -0.00018847 VU6+"2+'2  
Change in Focus                :       1.018470 c}!`tBTm  
      3     0.44510003    -0.09893230 2"k|IHs1  
Change in Focus                :      -0.601922 RameaFX8  
      4     0.18154684    -0.36248550 dNCd-ep  
Change in Focus                :       0.920681 @Z7s3b  
      5     0.28665820    -0.25737414 P8H2v_)X&  
Change in Focus                :       1.253875 *N
M*
 
      6     0.21263372    -0.33139862 zlB[Eg^X  
Change in Focus                :      -0.903878 4uh~@Lv  
      7     0.40051424    -0.14351809 FjI1'Ah\  
Change in Focus                :      -1.354815 J*zQ8\f=}  
      8     0.48754161    -0.05649072 $C,`^n'  
Change in Focus                :       0.215922 t'yh&44_  
      9     0.40357468    -0.14045766 vR pO0qG  
Change in Focus                :       0.281783 O'(D:D?  
     10     0.26315315    -0.28087919 "r8N- h/P  
Change in Focus                :      -1.048393 xT( pB-R  
     11     0.26120585    -0.28282649 fGW~xul_  
Change in Focus                :       1.017611 &_s^C?x  
     12     0.24033815    -0.30369419 Gm> =s  
Change in Focus                :      -0.109292 6ZwQ/~7H  
     13     0.37164046    -0.17239188 T!pA$eE  
Change in Focus                :      -0.692430 @*uZ+$  
     14     0.48597489    -0.05805744 il"pKQF  
Change in Focus                :      -0.662040 4/_!F'j  
     15     0.21462327    -0.32940907 . Y$xNLoP[  
Change in Focus                :       1.611296 {d0 rUHP  
     16     0.43378226    -0.11025008 i5_l
//]  
Change in Focus                :      -0.640081
n<@C'\j@  
     17     0.39321881    -0.15081353  f+.sm  
Change in Focus                :       0.914906 7Bd=K=3u  
     18     0.20692530    -0.33710703 ?%lfbZ  
Change in Focus                :       0.801607 GuaF B[4  
     19     0.51374068    -0.03029165 naA8RD5/  
Change in Focus                :       0.947293 }IdkXAB.  
     20     0.38013374    -0.16389860 ynf!1!4  
Change in Focus                :       0.667010 m?1r@!/y  
\4 +HNy3  
Number of traceable Monte Carlo files generated: 20 Z0v&AD=  
snNB;hkj  
Nominal     0.54403234 A;6ew
4  
Best        0.54384387    Trial     2 C1qlB8(Wh>  
Worst       0.18154684    Trial     4 _ /Eg_dQ~@  
Mean        0.35770970 %sPq*w.  
Std Dev     0.11156454 8A/rkoht*  
)nq(XM7  
>wFn|7\)s>  
Compensator Statistics: -i_XP]b&  
Change in back focus: kw7E<aF!  
Minimum            :        -1.354815 )>iPx.hVSS  
Maximum            :         1.611296 16nU`TN  
Mean               :         0.161872 ;!7M<T$&  
Standard Deviation :         0.869664 c+O:n:L  
wbk$(P'gN  
90% >       0.20977951               : w>R|]  
80% >       0.22748071               RSw;b.t7  
50% >       0.38667627               sXT8jLIf  
20% >       0.46553746               - (q7"h  
10% >       0.50064115                <(xro/  
8wEJyAu2  
End of Run. L$"pk{'  
B5R7geC  
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 ^&c &5S}  

图片:3.JPG

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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 m,6[;  
-D1
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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                 xX Dj4j,  
80% >       0.22748071                 GNHWbC6_m  
50% >       0.38667627                 ,s:viXk  
20% >       0.46553746                 dVn_+1\L  
10% >       0.50064115 F%O+w;J4  
gr# |ZK.`  
最后这个数值是MTF值呢，还是MTF的公差？ "{2niBx  
Blj<|\igc  
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？？？   %J9+`uSl  
"3_GFq  
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  : BO%'/2eV  
90% >       0.20977951                 b[:{\!I  
80% >       0.22748071                 M+:9U&>  
50% >       0.38667627                 DKkilqV
M  
20% >       0.46553746                 ,_Kr}RH  
10% >       0.50064115 HV*;Yt  
....... T)',}=  

:+"H h%  
yqB!0) <  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   %$i}[U  
Mode                : Sensitivities 
&~2IFp  
Sampling            : 2 PC|ul{[*}  
Nominal Criterion   : 0.54403234 (OA4H1DL^  
Test Wavelength     : 0.6328 ww #kc!'  
Ivj=?[c|  
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？ 0/9]TIc  
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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