[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 ome>Jbdhe  
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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 H{$yy)@F  
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图片:2.jpg

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然后运行分析的结果如下： 6/n;u{|  
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Analysis of Tolerances SMy&K[hJ[  
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File : E:\光学设计资料\zemax练习\f500.ZMX [a Z)*L ;  
Title: \C6m.%%={R  
Date : TUE JUN 21 2011 v m$v[  
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Units are Millimeters. xAO]u[J  
All changes are computed using linear differences. r\1*N.O3|O  
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Paraxial Focus compensation only. *>#cs#)  
z&:[.B  
WARNING: Solves should be removed prior to tolerancing. ynd}w G
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Mnemonics: D|BN_ai9  
TFRN: Tolerance on curvature in fringes. ZN1p>+oY!  
TTHI: Tolerance on thickness. g[n8N
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TSDX: Tolerance on surface decentering in x. ;K_B,@:'  
TSDY: Tolerance on surface decentering in y. m6gr!aT  
TSTX: Tolerance on surface tilt in x (degrees). 7/yd@#$X  
TSTY: Tolerance on surface tilt in y (degrees). ;|%r!!#-t  
TIRR: Tolerance on irregularity (fringes). Qp54(`  
TIND: Tolerance on Nd index of refraction. {!S/8o"]  
TEDX: Tolerance on element decentering in x. )}aF=%  
TEDY: Tolerance on element decentering in y. -,
tYfQ;:  
TETX: Tolerance on element tilt in x (degrees). :tgTYIF  
TETY: Tolerance on element tilt in y (degrees). ][mc^eI0s|  
{+EPE2X=C  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 2=|IOkY  
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WARNING: Boundary constraints on compensators will be ignored. gdT_kb5HL8  
%!S  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm SrtmpQ  
Mode                : Sensitivities y{sA["   
Sampling            : 2 {?iqO?  
Nominal Criterion   : 0.54403234 buFtLPe  
Test Wavelength     : 0.6328 :6 fQE#(s&  
,+RO 5n  
L_r &'B  
Fields: XY Symmetric Angle in degrees )-{~7@yqZ  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY S#9SAX [  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 6.jZy~  
O+$70  
Sensitivity Analysis: LA+MX0*  
1`t?5|s>  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| dNobvK  
Type                      Value      Criterion        Change          Value      Criterion        Change a3 x~B=E  
Fringe tolerance on surface 1 <7^~r(DP  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 bij?q\  
Change in Focus                :      -0.000000                            0.000000 Kd)m"9Cc  
Fringe tolerance on surface 2 QFPx4F7(e  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230  R'/wOE2  
Change in Focus                :       0.000000                            0.000000 NjxW A&[ng  
Fringe tolerance on surface 3 SS~Q;
9o  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 sdWl5 "  
Change in Focus                :      -0.000000                            0.000000 xNkY'4%  
Thickness tolerance on surface 1 S+G)&<a^  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 
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Change in Focus                :       0.000000                            0.000000 >B  
Thickness tolerance on surface 2
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TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 H~i],WD  
Change in Focus                :       0.000000                           -0.000000 AF$o>f  
Decenter X tolerance on surfaces 1 through 3 j%;)CV G"  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 zf~zYZSr  
Change in Focus                :       0.000000                            0.000000 5KR|pFq  
Decenter Y tolerance on surfaces 1 through 3 O:
)IRB3  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 &*aU2{,s,;  
Change in Focus                :       0.000000                            0.000000 >G2-kL_  
Tilt X tolerance on surfaces 1 through 3 (degrees) P{eR
DQ=  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 EC'bgFe  
Change in Focus                :       0.000000                            0.000000 836m5/kH[  
Tilt Y tolerance on surfaces 1 through 3 (degrees) [{F7Pc  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 z-5#bOABW  
Change in Focus                :       0.000000                            0.000000 6sl<Z=
E#  
Decenter X tolerance on surface 1 )yW_O:  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ]F;]<_  
Change in Focus                :       0.000000                            0.000000 2H[aY%1T  
Decenter Y tolerance on surface 1 Z!reX6  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 >` QX xTn  
Change in Focus                :       0.000000                            0.000000 %}XMhWn{  
Tilt X tolerance on surface (degrees) 1 #ya|{K  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 x 5Dt5Yp"o  
Change in Focus                :       0.000000                            0.000000 L0b]^_tI  
Tilt Y tolerance on surface (degrees) 1 >-lL-%N_  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ~4MjJKzA  
Change in Focus                :       0.000000                            0.000000 7RE6y(V1  
Decenter X tolerance on surface 2 vw] D{OBv*  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ,
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Change in Focus                :       0.000000                            0.000000 JK"uj%  
Decenter Y tolerance on surface 2 -Y?(Zz_w  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 T1
HiHvJ  
Change in Focus                :       0.000000                            0.000000 y%bqeo L~  
Tilt X tolerance on surface (degrees) 2 Q 02??W  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 }#>d2 =T$  
Change in Focus                :       0.000000                            0.000000 /%9p9$kFot  
Tilt Y tolerance on surface (degrees) 2 FR^wDm$  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 |~LjH|*M  
Change in Focus                :       0.000000                            0.000000 s4`*0
_n  
Decenter X tolerance on surface 3 !9LAXM  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ]#q7}Sd  
Change in Focus                :       0.000000                            0.000000 L_ qv<iM$  
Decenter Y tolerance on surface 3 Z?c=t-yqp  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 Qfu*F}  
Change in Focus                :       0.000000                            0.000000 e=;@L3f
 
Tilt X tolerance on surface (degrees) 3 ":#x\;  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 dzNaow*0&V  
Change in Focus                :       0.000000                            0.000000 Z?v6pjZ?  
Tilt Y tolerance on surface (degrees) 3 e=)
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TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 n;^k
 
Change in Focus                :       0.000000                            0.000000 JvJ!\6Q@  
Irregularity of surface 1 in fringes ilcy/  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 | ,l=v`/  
Change in Focus                :       0.000000                            0.000000 Qn)[1v  
Irregularity of surface 2 in fringes TgE.=`"7  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 YZ:'8<  
Change in Focus                :       0.000000                            0.000000 2a(
yR>#  
Irregularity of surface 3 in fringes VE"0VB.  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 `)!2E6 =  
Change in Focus                :       0.000000                            0.000000 9g5{3N3  
Index tolerance on surface 1 ySK Yqt z  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 7U )qC}(  
Change in Focus                :       0.000000                            0.000000 LOUKUReE  
Index tolerance on surface 2 k&_u\D"^"%  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 -kri3?Y,  
Change in Focus                :       0.000000                           -0.000000 (VI* c!N  
V<NsmC=g  
Worst offenders: l^y?L4hg)  
Type                      Value      Criterion        Change )tI2?YIR  
TSTY   2            -0.20000000     0.35349910    -0.19053324 (:bCOEZ  
TSTY   2             0.20000000     0.35349910    -0.19053324 "ko?att~  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ]G o~]7(5|  
TSTX   2             0.20000000     0.35349910    -0.19053324 tTh;.8
8Z{  
TSTY   1            -0.20000000     0.42678383    -0.11724851 ;/^]|  
TSTY   1             0.20000000     0.42678383    -0.11724851 k#:@fH4{PA  
TSTX   1            -0.20000000     0.42678383    -0.11724851 b}*@=X=4o  
TSTX   1             0.20000000     0.42678383    -0.11724851 Y=Ar3O*F  
TSTY   3            -0.20000000     0.42861670    -0.11541563 yZ~eLWz  
TSTY   3             0.20000000     0.42861670    -0.11541563 I%Po/
+|+  
':2*+
 
Estimated Performance Changes based upon Root-Sum-Square method: pT;-1c%:  
Nominal MTF                 :     0.54403234 o`T<}z26
 
Estimated change            :    -0.36299231 GKsL~;8"  
Estimated MTF               :     0.18104003 B/9<b{6  
0jJ28.kOp  
Compensator Statistics: 0@e}hv;  
Change in back focus: XG\a-dq[  
Minimum            :        -0.000000 b^l -*4  
Maximum            :         0.000000 6v2RS  
Mean               :        -0.000000 2*FWIHyf  
Standard Deviation :         0.000000 EBDC'^  
vu'!-K=0  
Monte Carlo Analysis: +?5Uy
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Number of trials: 20 q%kj[ZOY$]  
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Initial Statistics: Normal Distribution hKzBq*cV  
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  Trial       Criterion        Change wp]7Lx?F  
      1     0.42804416    -0.11598818 Yr"!&\[oz  
Change in Focus                :      -0.400171 J.e8UQ@=5  
      2     0.54384387    -0.00018847 ^2;(2s  
Change in Focus                :       1.018470 6|9g4@Hy  
      3     0.44510003    -0.09893230 Xv7U<
q  
Change in Focus                :      -0.601922 hNq8 uyKx  
      4     0.18154684    -0.36248550 $kD`$L@U  
Change in Focus                :       0.920681 L4/TI(MP  
      5     0.28665820    -0.25737414 ox\B3U%`p}  
Change in Focus                :       1.253875 8NAWA3^B  
      6     0.21263372    -0.33139862 jY#(A23  
Change in Focus                :      -0.903878 mcz(,u}  
      7     0.40051424    -0.14351809 =
6Kv`  
Change in Focus                :      -1.354815 4<3?al&  
      8     0.48754161    -0.05649072 Z*vpQBbu  
Change in Focus                :       0.215922 +Sdx8 Z5  
      9     0.40357468    -0.14045766 (4{
C7  
Change in Focus                :       0.281783 2NArE@  
     10     0.26315315    -0.28087919  $`XN  
Change in Focus                :      -1.048393 Lr24bv
\  
     11     0.26120585    -0.28282649 %+7T
9>+  
Change in Focus                :       1.017611 @cS1w'=  
     12     0.24033815    -0.30369419 Fyh?4!/.  
Change in Focus                :      -0.109292 94'k7_q  
     13     0.37164046    -0.17239188 7S dV%"  
Change in Focus                :      -0.692430 kh>SrW]B%  
     14     0.48597489    -0.05805744 _8NEwwhc  
Change in Focus                :      -0.662040 n$OE~YwP{  
     15     0.21462327    -0.32940907 ]4 K1%ZV  
Change in Focus                :       1.611296 l#5~t|\  
     16     0.43378226    -0.11025008 _,Rsl$Tk'  
Change in Focus                :      -0.640081 
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     17     0.39321881    -0.15081353 S`W'G&bCj  
Change in Focus                :       0.914906 2Pem%HE~P  
     18     0.20692530    -0.33710703 B.Zm$JZ:  
Change in Focus                :       0.801607 iBtjd`V*  
     19     0.51374068    -0.03029165 tkdBlG]!  
Change in Focus                :       0.947293 sx[&4 k[  
     20     0.38013374    -0.16389860 q2S!m6!  
Change in Focus                :       0.667010 wzDk{4U  
20.-;jK  
Number of traceable Monte Carlo files generated: 20 :!+}XT7)/  
}:RT,<  
Nominal     0.54403234 EZ%

w=  
Best        0.54384387    Trial     2 Uxk[O  
Worst       0.18154684    Trial     4 &sZ9$s:(^  
Mean        0.35770970 OD?
y  
Std Dev     0.11156454
.0Iun+nUD  
,
TKs/-_?  
 ^6)GS%R  
Compensator Statistics: 't0+:o">:  
Change in back focus: f.aB?\"f6  
Minimum            :        -1.354815 Z#OhYm+y  
Maximum            :         1.611296 B.}_],  
Mean               :         0.161872 }XGMa?WR  
Standard Deviation :         0.869664 96"yNqBf  
!cEbzb  
90% >       0.20977951               H{\.g=01  
80% >       0.22748071               S' (cqO}=F  
50% >       0.38667627               0kNe?Xi  
20% >       0.46553746               Z>(r9R3{  
10% >       0.50064115                jb|mip@` <  
*PSvHXNi  
End of Run. sJ))<,e5I  
kf%&d}2to  
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 | ((1V^  

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 g.B%#bfg  
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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                 :.*HQt9N  
80% >       0.22748071                 ""co6qo#>  
50% >       0.38667627                 QX[Djz0H8  
20% >       0.46553746                 J,f/fPaf7  
10% >       0.50064115 o^3FL||P#r  
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最后这个数值是MTF值呢，还是MTF的公差？ qE )Y}oN  
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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？？？   8wr8:(Y$  
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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  : r3qf[?3`6  
90% >       0.20977951                 ]N^*tO  
80% >       0.22748071                 }s_hD`'  
50% >       0.38667627                 Dw_D+7>(v  
20% >       0.46553746                 w\Mnu}<e$  
10% >       0.50064115 er2cQS7R  
....... Dzl;-]S  

d-
-'Rn5  
(u hd "  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   -F\qnsZ2  
Mode                : Sensitivities HfB@vw^  
Sampling            : 2 /KCPpERk{  
Nominal Criterion   : 0.54403234 J~#$J&iKh  
Test Wavelength     : 0.6328 +9XQ[57  
WGu%7e]  
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？ jS.g]k  
e@#kRklV&  
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