[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 x}jiHV@=  
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然后添加了默认公差分析，基本没变 Dlx-mm_  
 r95$( N  
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然后运行分析的结果如下： y9-}LET3j  
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Analysis of Tolerances 1w|u ^[~u\  
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File : E:\光学设计资料\zemax练习\f500.ZMX h 7*
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Title: 8@BN6  
Date : TUE JUN 21 2011 Q) Y&h'.(  
@EGUQ|WL^  
Units are Millimeters. RLUH[[  
All changes are computed using linear differences. V>B*_J,z.  
RiCzH  
Paraxial Focus compensation only. KGsW*G4U=  
?KXgG'!!  
WARNING: Solves should be removed prior to tolerancing. \I~9%QJ>  
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Mnemonics: bPo*L~xdk  
TFRN: Tolerance on curvature in fringes. =ms o1  
TTHI: Tolerance on thickness. S0-/9h  
TSDX: Tolerance on surface decentering in x. UZ3oc[#D=]  
TSDY: Tolerance on surface decentering in y. te8lF{R  
TSTX: Tolerance on surface tilt in x (degrees). jthGNVZ  
TSTY: Tolerance on surface tilt in y (degrees). Zmr*$,v<y  
TIRR: Tolerance on irregularity (fringes). jBnvu@K"  
TIND: Tolerance on Nd index of refraction. 2:D1<z6RQ  
TEDX: Tolerance on element decentering in x. CsW*E,|xyP  
TEDY: Tolerance on element decentering in y. qC$h~Epp4  
TETX: Tolerance on element tilt in x (degrees). "T'?Ah6  
TETY: Tolerance on element tilt in y (degrees). 1F58 2 l  
eXsFPM  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. `DcZpd.n  
bF{14F$  
WARNING: Boundary constraints on compensators will be ignored. DeL7sU  
|h75S.UY  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm bx8|_K*^  
Mode                : Sensitivities <-m?l6  
Sampling            : 2 R'{BkC}.  
Nominal Criterion   : 0.54403234 }!0nb)kL  
Test Wavelength     : 0.6328 _b1w<T `  
4?F7%^vr  
F3V_rE<  
Fields: XY Symmetric Angle in degrees .j_YVYu1&  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ~}F$1;t0  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 _'47yq^O  
#.z`clK#  
Sensitivity Analysis: y:N>t+'5  
f MDM\&f  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| VvTs87  
Type                      Value      Criterion        Change          Value      Criterion        Change H3Z"u  
Fringe tolerance on surface 1 v5!G/TZ1  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 d %Z+.O  
Change in Focus                :      -0.000000                            0.000000 m?=9j~F*  
Fringe tolerance on surface 2 ><Z`)}
f  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 msiftP.  
Change in Focus                :       0.000000                            0.000000 WSPlM"h  
Fringe tolerance on surface 3 4,pSC  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 yxU??#v|g  
Change in Focus                :      -0.000000                            0.000000 "mm|0PUJ  
Thickness tolerance on surface 1 47 _";g@X  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 zHsWj^m"  
Change in Focus                :       0.000000                            0.000000 G[=8Ko0U+n  
Thickness tolerance on surface 2 d5ivtK?  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 umD[4aP~;  
Change in Focus                :       0.000000                           -0.000000 ,/P)c*at5  
Decenter X tolerance on surfaces 1 through 3 |2eF~tJqc  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ssy+x;<x,  
Change in Focus                :       0.000000                            0.000000 C3 m#v[+  
Decenter Y tolerance on surfaces 1 through 3 v<qiu>sbz}  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 fm%1vM$[J  
Change in Focus                :       0.000000                            0.000000 W~&PGmRI  
Tilt X tolerance on surfaces 1 through 3 (degrees)  ^?3e?Q?  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 N7`<t&T@  
Change in Focus                :       0.000000                            0.000000 ORo +=2  
Tilt Y tolerance on surfaces 1 through 3 (degrees) }m6j6uAR6)  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _(<D*V[  
Change in Focus                :       0.000000                            0.000000 @9!,]
n  
Decenter X tolerance on surface 1 E'g2<k  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 gZs UX^%  
Change in Focus                :       0.000000                            0.000000 j`9+pI  
Decenter Y tolerance on surface 1 ul',!js?  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;i2N`t2  
Change in Focus                :       0.000000                            0.000000 NI^[7.2  
Tilt X tolerance on surface (degrees) 1 DNy1} 3wg  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 {|jG_  
Change in Focus                :       0.000000                            0.000000 mj{/'  
Tilt Y tolerance on surface (degrees) 1 n?QpVROo\  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9x~qcH%  
Change in Focus                :       0.000000                            0.000000 _/)?GXwLn  
Decenter X tolerance on surface 2 XVfp* `  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 I oz rZ  
Change in Focus                :       0.000000                            0.000000 *WQ}ucE^#  
Decenter Y tolerance on surface 2 Ij_VO{]G'l  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 m*h, <,}-+  
Change in Focus                :       0.000000                            0.000000 dpBG)Xzoyv  
Tilt X tolerance on surface (degrees) 2 Bpjw
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TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $cLtAo^W  
Change in Focus                :       0.000000                            0.000000 aeESS;JxJj  
Tilt Y tolerance on surface (degrees) 2 |xTf:@hgHf  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 U~SOHfZ%(  
Change in Focus                :       0.000000                            0.000000 }@pe`AF^  
Decenter X tolerance on surface 3 G}tq'#]E{z  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 xi6Fs, 2S  
Change in Focus                :       0.000000                            0.000000 MK]S205{  
Decenter Y tolerance on surface 3 UN&b]vg  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 h-1eDxK6  
Change in Focus                :       0.000000                            0.000000 \jdpL1  
Tilt X tolerance on surface (degrees) 3 '\:?FQ C  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 IkSzjXE{  
Change in Focus                :       0.000000                            0.000000 ms=Ilz  
Tilt Y tolerance on surface (degrees) 3 'iN8JO>  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 4QnJ;&~  
Change in Focus                :       0.000000                            0.000000 '|e5cW6z  
Irregularity of surface 1 in fringes Q:]F* p2  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 Ed|
7E_v  
Change in Focus                :       0.000000                            0.000000 _4z>I/R>Z  
Irregularity of surface 2 in fringes #gOITXKs  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 bQk5R._got  
Change in Focus                :       0.000000                            0.000000 AZ5c^c)  
Irregularity of surface 3 in fringes E'LkoyI  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 #jV6w=I  
Change in Focus                :       0.000000                            0.000000 :yvUHx  
Index tolerance on surface 1 {M]m cRB(
 
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 C,Je>G  
Change in Focus                :       0.000000                            0.000000 d}b#"A  
Index tolerance on surface 2 =o=)EU{~  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 \O?#gW\tR  
Change in Focus                :       0.000000                           -0.000000 9dw02bY`  
#]I:}Q51  
Worst offenders: .N]^g#  
Type                      Value      Criterion        Change }rVnuRq  
TSTY   2            -0.20000000     0.35349910    -0.19053324 (@`+Le  
TSTY   2             0.20000000     0.35349910    -0.19053324 R+Ke|C  
TSTX   2            -0.20000000     0.35349910    -0.19053324 9Dd
/g7  
TSTX   2             0.20000000     0.35349910    -0.19053324 _y`'T;~OY  
TSTY   1            -0.20000000     0.42678383    -0.11724851 |mrAvm}  
TSTY   1             0.20000000     0.42678383    -0.11724851 0;OpT0  
TSTX   1            -0.20000000     0.42678383    -0.11724851 w IT`OT6Q  
TSTX   1             0.20000000     0.42678383    -0.11724851 v}-'L#6  
TSTY   3            -0.20000000     0.42861670    -0.11541563 @ky
5XV  
TSTY   3             0.20000000     0.42861670    -0.11541563 b/]C,P  
33couAP#  
Estimated Performance Changes based upon Root-Sum-Square method: 1O9V Ej5  
Nominal MTF                 :     0.54403234 a+*|P  
Estimated change            :    -0.36299231 =Ze~6vS,  
Estimated MTF               :     0.18104003 uZId.+Rk  
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Compensator Statistics: @8@cpm  
Change in back focus: ~v9\4O  
Minimum            :        -0.000000 9ZG.%+l  
Maximum            :         0.000000 b
Q0m=BzF  
Mean               :        -0.000000 &#g;=jZ  
Standard Deviation :         0.000000 Z/hSH 0(~  
? _[gs/i}  
Monte Carlo Analysis: " I`<s<  
Number of trials: 20 vyqlP;K  
ImklM7A  
Initial Statistics: Normal Distribution V|xR`Q  
IcPIOCmOc  
  Trial       Criterion        Change ^#exsXy  
      1     0.42804416    -0.11598818 KWy4}7a@,s  
Change in Focus                :      -0.400171 \8Fe56  
      2     0.54384387    -0.00018847 H*yX Iq:  
Change in Focus                :       1.018470 j4H,*fc  
      3     0.44510003    -0.09893230 v"_hWJ)  
Change in Focus                :      -0.601922 lpve Yz  
      4     0.18154684    -0.36248550
l[Ng8[R  
Change in Focus                :       0.920681 8Z/P<u  
      5     0.28665820    -0.25737414 Y4!v1  
Change in Focus                :       1.253875 _l}&|:  
      6     0.21263372    -0.33139862 7u\^$25+h  
Change in Focus                :      -0.903878 wvJm)Mj+  
      7     0.40051424    -0.14351809 %S.R@C[3  
Change in Focus                :      -1.354815  z{``v|K  
      8     0.48754161    -0.05649072 l4hC>q$T  
Change in Focus                :       0.215922 &bs/a]?Z7  
      9     0.40357468    -0.14045766 4\ H;A  
Change in Focus                :       0.281783 zWB>;Z}  
     10     0.26315315    -0.28087919 Gnj|y?'  
Change in Focus                :      -1.048393 @(Ou
;Uy  
     11     0.26120585    -0.28282649  5ah]E  
Change in Focus                :       1.017611 *"O7ml
]  
     12     0.24033815    -0.30369419 RjSVa.x  
Change in Focus                :      -0.109292 |CY
.Y,  
     13     0.37164046    -0.17239188 gHvxmIG  
Change in Focus                :      -0.692430 '`\\O:@C`  
     14     0.48597489    -0.05805744 q%Obrk  
Change in Focus                :      -0.662040  ];Bh1  
     15     0.21462327    -0.32940907 ga6M8eOI  
Change in Focus                :       1.611296 HWFo9as""v  
     16     0.43378226    -0.11025008 uUwwR(R  
Change in Focus                :      -0.640081 <.s[x~b\`  
     17     0.39321881    -0.15081353 #G$_\bt  
Change in Focus                :       0.914906 +<|6y46  
     18     0.20692530    -0.33710703 DP &,jU6  
Change in Focus                :       0.801607 vM1f-I-  
     19     0.51374068    -0.03029165 g15e|y)th  
Change in Focus                :       0.947293 P8).Qn  
     20     0.38013374    -0.16389860 Ngi$y>{Sq  
Change in Focus                :       0.667010 DE^{8YX,  
3iR;(l}  
Number of traceable Monte Carlo files generated: 20 c3Y\XzV3v  
xQ^zX7  
Nominal     0.54403234 !d&K,k  
Best        0.54384387    Trial     2 Qg<_te)\  
Worst       0.18154684    Trial     4 &#w] 2~|  
Mean        0.35770970 +i4S^B/8i  
Std Dev     0.11156454 5yuj}/PZ  
sD_Z`1  
lBgf' b3$  
Compensator Statistics: GFYAg  
Change in back focus: 75jq+O_:  
Minimum            :        -1.354815 /al(=zf  
Maximum            :         1.611296 SLD%8:Zn  
Mean               :         0.161872 i~MCY.F  
Standard Deviation :         0.869664 #dtYa  
O0i_h<T  
90% >       0.20977951               @vCPX=c  
80% >       0.22748071               U_wn/wcLS  
50% >       0.38667627               imZi7o  
20% >       0.46553746               m5v9:5{  
10% >       0.50064115                w\:-lXw  
bT|a]b:  
End of Run. 8G6PcTqv"  
%kxq"=3  
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 *[wy- fu  
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B-@6m  
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 SWNi@  
_rR+u56y-  
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                
W$B&asO  
80% >       0.22748071                 |s-q+q{|  
50% >       0.38667627                 WPygmti}Be  
20% >       0.46553746                 ,d(F|5M:  
10% >       0.50064115 (~:k70V5  

VUC  
最后这个数值是MTF值呢，还是MTF的公差？ l=8)_z;~D  
"u~l+aW0  
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？？？   QZB2yK3]h  
Q/m))!ikMt  
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  : cE>K:3n  
90% >       0.20977951                 ]vJZ v"ACn  
80% >       0.22748071                 DrLNY"Zq  
50% >       0.38667627                 ((^jyQ  
20% >       0.46553746                 vzJ69%E_  
10% >       0.50064115 e`k6YO  
....... QW#]i  

Cbm  
U^vQr%ha  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   pw{3I 2Ix  
Mode                : Sensitivities r9z_8#cR  
Sampling            : 2 'E
U{%\qM  
Nominal Criterion   : 0.54403234 c_c]0Tm  
Test Wavelength     : 0.6328 5,`U3na,  
wVkms  
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？ 4NN-'Z>a  
l=D E|:  
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