[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 NuEcTww  
@~ 6,8nQ  

图片:1.JPG

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然后添加了默认公差分析，基本没变 d?6\  
h/s8".\  

图片:2.jpg

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然后运行分析的结果如下： eeVzOq(  
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Analysis of Tolerances %(}%#-X  
OCN:{  
File : E:\光学设计资料\zemax练习\f500.ZMX +T8h jOkC  
Title: )x&4 Q=  
Date : TUE JUN 21 2011 (F+]h]KSi  
q9gk:Jt  
Units are Millimeters. ,DIr&5>p2  
All changes are computed using linear differences. KFhnv`a.0  
Nu,t,&B   
Paraxial Focus compensation only. `Lj'2LoER  
J
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WARNING: Solves should be removed prior to tolerancing. "2_nN]%u-  
k
*ZYT6Z?  
Mnemonics: 0Qr|!B:+9)  
TFRN: Tolerance on curvature in fringes. /Z1>3=G by  
TTHI: Tolerance on thickness. O*lMIWx  
TSDX: Tolerance on surface decentering in x. VJbn/5+P  
TSDY: Tolerance on surface decentering in y. f\u5=!kjN  
TSTX: Tolerance on surface tilt in x (degrees). Yu+;vjbK-  
TSTY: Tolerance on surface tilt in y (degrees). cv7.=*Kb;  
TIRR: Tolerance on irregularity (fringes). /P[@o  
TIND: Tolerance on Nd index of refraction. dUc?>#TU  
TEDX: Tolerance on element decentering in x. WR zIK09@  
TEDY: Tolerance on element decentering in y. }$oZZKS  
TETX: Tolerance on element tilt in x (degrees). R^VmNj  
TETY: Tolerance on element tilt in y (degrees). LZ4Z]!V  
uB;PaZG?{  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. wDt9Lf O  
?WBA:?=$58  
WARNING: Boundary constraints on compensators will be ignored. z^Y4:^L~I  
,e@707d`\  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm fX/k;0l  
Mode                : Sensitivities NOQSLT=  
Sampling            : 2 +5N09$f;R  
Nominal Criterion   : 0.54403234 5e >qBw8t  
Test Wavelength     : 0.6328 A3A"^f$$  
:pNu$%q  
C<E;f]d  
Fields: XY Symmetric Angle in degrees +i(;@
% kv  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY OE(!^"5?[  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 uu
f+M-P  
dk.VH!uVb  
Sensitivity Analysis: KY9&Ky+2B  
~PA6e+gmL  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| yL"pzD`[H  
Type                      Value      Criterion        Change          Value      Criterion        Change ,K8(D<{  
Fringe tolerance on surface 1 yr q){W  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Nrfj[I  
Change in Focus                :      -0.000000                            0.000000 !3Ed0h]Bfa  
Fringe tolerance on surface 2 +7$zL;ph=n  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 [' cq  
Change in Focus                :       0.000000                            0.000000 Qe4"a*l-r  
Fringe tolerance on surface 3 1J[|Ow  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 0
ChdFf7  
Change in Focus                :      -0.000000                            0.000000 |YK4V(5x  
Thickness tolerance on surface 1 [8rl{~9E  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 (6~~e$j  
Change in Focus                :       0.000000                            0.000000 l3;MjNB^V  
Thickness tolerance on surface 2 DtOL=m]s  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 B$&&'i%  
Change in Focus                :       0.000000                           -0.000000 (7?jjH^4  
Decenter X tolerance on surfaces 1 through 3 '/Ag3R  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 BV512+M  
Change in Focus                :       0.000000                            0.000000 5}he)2*uD  
Decenter Y tolerance on surfaces 1 through 3 vw
/X  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6dQ]=];  
Change in Focus                :       0.000000                            0.000000 WG(%Pkowv
 
Tilt X tolerance on surfaces 1 through 3 (degrees) "bk'#?9  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 MP%pEUomev  
Change in Focus                :       0.000000                            0.000000 U(u$5  
Tilt Y tolerance on surfaces 1 through 3 (degrees) YR
s32vVz  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,]8$QFf  
Change in Focus                :       0.000000                            0.000000 M,/{53  
Decenter X tolerance on surface 1 g9oYK  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 <o.?T*Q9  
Change in Focus                :       0.000000                            0.000000 ZX03FJL7u  
Decenter Y tolerance on surface 1 Hsi<!g.  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 J<=k [Q  
Change in Focus                :       0.000000                            0.000000 q+}
Er*r  
Tilt X tolerance on surface (degrees) 1 BuIly&qbm<  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 /;\{zA$uC=  
Change in Focus                :       0.000000                            0.000000 Mg}8 3kS  
Tilt Y tolerance on surface (degrees) 1 SVc5mS|up  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 &0QtHcXpR  
Change in Focus                :       0.000000                            0.000000 \`$RY')9|!  
Decenter X tolerance on surface 2 268H!'!\  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 +/Q?<*[  
Change in Focus                :       0.000000                            0.000000 GUqhm$6a  
Decenter Y tolerance on surface 2 t ]yD95|  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Lr}>Md  
Change in Focus                :       0.000000                            0.000000 I]OVzM  
Tilt X tolerance on surface (degrees) 2 oiY&O]}  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 \4r?=5v*  
Change in Focus                :       0.000000                            0.000000 #pm0T1+jW  
Tilt Y tolerance on surface (degrees) 2 _Z
D8/?2QV  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 N&'05uWY}  
Change in Focus                :       0.000000                            0.000000 Rr0@F`"R  
Decenter X tolerance on surface 3 rS/}!|uAu  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4:S?m(ah/  
Change in Focus                :       0.000000                            0.000000 gNoQ[xFx32  
Decenter Y tolerance on surface 3 i9%cpPrg8  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %juR6zB%8  
Change in Focus                :       0.000000                            0.000000 5v@-.p  
Tilt X tolerance on surface (degrees) 3 K=`;D  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 $pOgFA1'  
Change in Focus                :       0.000000                            0.000000 
4fp]z9Y  
Tilt Y tolerance on surface (degrees) 3 -g;cg7O#(  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 t@1bu$y  
Change in Focus                :       0.000000                            0.000000 K@UQ O  
Irregularity of surface 1 in fringes -Bl!s^-'  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 @|cfFT W  
Change in Focus                :       0.000000                            0.000000 C0bOPn  
Irregularity of surface 2 in fringes }co*%F{1  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Z<,$XvL  
Change in Focus                :       0.000000                            0.000000 erC)2{m  
Irregularity of surface 3 in fringes ILQB%0!  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 |{G GATni  
Change in Focus                :       0.000000                            0.000000 D^~G(m;-  
Index tolerance on surface 1 861!p%y5  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 `
43X? yQ  
Change in Focus                :       0.000000                            0.000000 #& 5}  
Index tolerance on surface 2 S`qa_yI)Ed  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 jg7WMH
"`  
Change in Focus                :       0.000000                           -0.000000 NLLLt  
E3a^)S{  
Worst offenders: Pb(XR+  
Type                      Value      Criterion        Change #~Z55D_  
TSTY   2            -0.20000000     0.35349910    -0.19053324 D<35FD,  
TSTY   2             0.20000000     0.35349910    -0.19053324 _poe{@h!  
TSTX   2            -0.20000000     0.35349910    -0.19053324 =]auP{AlE  
TSTX   2             0.20000000     0.35349910    -0.19053324 =/b WS,=  
TSTY   1            -0.20000000     0.42678383    -0.11724851 pDg_^
|  
TSTY   1             0.20000000     0.42678383    -0.11724851 ]$VYzE2e  
TSTX   1            -0.20000000     0.42678383    -0.11724851 \~#$$Q-qtU  
TSTX   1             0.20000000     0.42678383    -0.11724851 foOwJ}JU  
TSTY   3            -0.20000000     0.42861670    -0.11541563 :{ }]$+|)\  
TSTY   3             0.20000000     0.42861670    -0.11541563 [4_JK  
7oK7f=*Q  
Estimated Performance Changes based upon Root-Sum-Square method: ;GgW&*|  
Nominal MTF                 :     0.54403234 wCwJ#-z.=  
Estimated change            :    -0.36299231 @@O=a  
Estimated MTF               :     0.18104003 m<DiYxK  
L`M.Htm8  
Compensator Statistics: *yx&4)Or  
Change in back focus: ~baVS-v  
Minimum            :        -0.000000 M,ObzgW  
Maximum            :         0.000000 wLDWD,"K  
Mean               :        -0.000000 79?%g=#=  
Standard Deviation :         0.000000 )TmqE<[  
[9:'v@Ph  
Monte Carlo Analysis: @DYxDap{  
Number of trials: 20 FccT@,.F  
&s|a\!>l  
Initial Statistics: Normal Distribution jBTXs5q  
FHu -';  
  Trial       Criterion        Change nS53mLU)  
      1     0.42804416    -0.11598818 i"h '^6M1  
Change in Focus                :      -0.400171 y$]gmg  
      2     0.54384387    -0.00018847 "0nT:!BZ  
Change in Focus                :       1.018470 @Y~R*^n"}  
      3     0.44510003    -0.09893230 ,EAf/2C  
Change in Focus                :      -0.601922 &@c?5Ie5  
      4     0.18154684    -0.36248550 JVoW*uA  
Change in Focus                :       0.920681 }[[  
      5     0.28665820    -0.25737414 _ 2WG6y;  
Change in Focus                :       1.253875 qNLG-m,n<  
      6     0.21263372    -0.33139862 C{i9~80n  
Change in Focus                :      -0.903878 $ON4nx  
      7     0.40051424    -0.14351809 Vu%XoI)<KY  
Change in Focus                :      -1.354815 $ylQ \Y'  
      8     0.48754161    -0.05649072 HywT  
Change in Focus                :       0.215922 :N826_q  
      9     0.40357468    -0.14045766 k k&8:;Vj  
Change in Focus                :       0.281783 _::q S!  
     10     0.26315315    -0.28087919 1|?8g2Vf  
Change in Focus                :      -1.048393 aXoD{zA  
     11     0.26120585    -0.28282649 >d`XR"_e  
Change in Focus                :       1.017611 yU-^w^4  
     12     0.24033815    -0.30369419 )w{bT]   
Change in Focus                :      -0.109292 !s>AVV$;0  
     13     0.37164046    -0.17239188  Nn"[GB  
Change in Focus                :      -0.692430 BVKr
2v  
     14     0.48597489    -0.05805744 CO
E,pb17  
Change in Focus                :      -0.662040 MWsjkI`  
     15     0.21462327    -0.32940907 fkp
rTk^#  
Change in Focus                :       1.611296 ,&DK*LT8U  
     16     0.43378226    -0.11025008 0Cox+QJt  
Change in Focus                :      -0.640081 re\@v8w~  
     17     0.39321881    -0.15081353 hmA$gR_  
Change in Focus                :       0.914906 )JO#Z(  
     18     0.20692530    -0.33710703 19Cs 3B\4  
Change in Focus                :       0.801607 3'd(=hJ45$  
     19     0.51374068    -0.03029165 >@NH Al  
Change in Focus                :       0.947293 g>lJZD@  
     20     0.38013374    -0.16389860 c)d*[OI8  
Change in Focus                :       0.667010 jRswGMx  
cTA8F"UGD  
Number of traceable Monte Carlo files generated: 20 WIytgM  
Wc}opp  
Nominal     0.54403234 ")/TbTVu  
Best        0.54384387    Trial     2 4G:I VK9  
Worst       0.18154684    Trial     4 0_}^IiG  
Mean        0.35770970 }Yi)r*LI3  
Std Dev     0.11156454 IETdL{`~  
GM.2bA(y  
H-?wEMi)*u  
Compensator Statistics: \hjGw,d  
Change in back focus: @%4MFc0`!  
Minimum            :        -1.354815 x=+R0ny  
Maximum            :         1.611296 p^2"g~  
Mean               :         0.161872 Fq{Z-yVp  
Standard Deviation :         0.869664 CaX0Jlk*  
Xx;RH9YYz  
90% >       0.20977951               4Xna}7  
80% >       0.22748071               i|'M'^3r  
50% >       0.38667627               (nhv#&Fd+  
20% >       0.46553746               OL,3Jh% x  
10% >       0.50064115                G2FP|mf,  
oDyrf"dl  
End of Run. Sm(QgZO[4  
M`W%nvEDE  
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 traJub  

图片:3.JPG

5rAI[r 9  
ZE#f{qF(  
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 E,Q>jH  
b\/:-][  
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                 9wP_dJvb  
80% >       0.22748071                 2e}${NZN  
50% >       0.38667627                 ~L!*p0dS^  
20% >       0.46553746                 Lm<"W_  
10% >       0.50064115 j(
|G
) F  
DPvM|n`TW  
最后这个数值是MTF值呢，还是MTF的公差？ NiU}A$U  
!1f8~"Z  
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？？？   X{rw+!  
2Mc/ah  
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  : ?D-1xnxep  
90% >       0.20977951                 i`/_^Fndyu  
80% >       0.22748071                
:@)UI,  
50% >       0.38667627                 /e :V44  
20% >       0.46553746                 $Z6g/bD`E  
10% >       0.50064115 py.lGywb_  
....... )z-)S  

CI"7* z_  
)&]gX  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   j#QJ5(
#  
Mode                : Sensitivities c*2U'A  
Sampling            : 2 {Q],rv|;  
Nominal Criterion   : 0.54403234 C(zgBk  
Test Wavelength     : 0.6328 |U{9Yy6p  
2Ya)I k{  
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？ (:9yeP1  
I5]=\k($  
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