[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 r UZN$="N  
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然后添加了默认公差分析，基本没变 }Gb^%1%M  
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然后运行分析的结果如下： (/&ht-~EL  
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Analysis of Tolerances tculG|/  
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File : E:\光学设计资料\zemax练习\f500.ZMX ~ cu+QR)  
Title: p}GTOJT}  
Date : TUE JUN 21 2011 OmK0-fa/  
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Units are Millimeters. 6,CK1j+tZ  
All changes are computed using linear differences. 3- d"-'k  
p+Bvfn  
Paraxial Focus compensation only. p8F$vx4,  
v(sS$2J|}  
WARNING: Solves should be removed prior to tolerancing. :+^`VLIf  

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Mnemonics: [KO\!u|?YS  
TFRN: Tolerance on curvature in fringes. `ALQSo~l  
TTHI: Tolerance on thickness.
P:'y}a-  
TSDX: Tolerance on surface decentering in x. b0%#=KMi  
TSDY: Tolerance on surface decentering in y. `+KLE(]vyH  
TSTX: Tolerance on surface tilt in x (degrees). EG=U](8T  
TSTY: Tolerance on surface tilt in y (degrees). b[n6L5P5m2  
TIRR: Tolerance on irregularity (fringes). 3\<(!yY8  
TIND: Tolerance on Nd index of refraction. {![
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TEDX: Tolerance on element decentering in x. JZyEyN  
TEDY: Tolerance on element decentering in y. m`XaY J  
TETX: Tolerance on element tilt in x (degrees). [)[?FG9   
TETY: Tolerance on element tilt in y (degrees). )d {8Cu6  
iu+H+_  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. }?GeU Xhy  
$:DL+E-}  
WARNING: Boundary constraints on compensators will be ignored. VJgf, 5 (N  
nM$-L.dG  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm CS"k0V44}  
Mode                : Sensitivities ? zic1i  
Sampling            : 2 mp]UUpt  
Nominal Criterion   : 0.54403234 :e_yOT}}  
Test Wavelength     : 0.6328 a 6fH*2E  
<&M5#:
u  
5FNf)F   
Fields: XY Symmetric Angle in degrees V3pn@'pr  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 1-4*Y
rA  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 7,9zj1<  
ol4!#4Y&{  
Sensitivity Analysis: 7 Uu  
C\[g>_J  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| G!ryW4  
Type                      Value      Criterion        Change          Value      Criterion        Change 6ozBU^n  
Fringe tolerance on surface 1 UB;~Rf(.  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 Zf\It<zT5  
Change in Focus                :      -0.000000                            0.000000 9VTE?,  
Fringe tolerance on surface 2 E[_-s  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 v[y|E;B  
Change in Focus                :       0.000000                            0.000000 !.={p8X-x  
Fringe tolerance on surface 3 W.b?~  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 vC5 (  
Change in Focus                :      -0.000000                            0.000000 KI<Vvcm  
Thickness tolerance on surface 1 2ld0w=?+eu  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 kmL~H1qd  
Change in Focus                :       0.000000                            0.000000 f['pHR%l2$  
Thickness tolerance on surface 2 }JWk?  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 b{JxTT}03  
Change in Focus                :       0.000000                           -0.000000 fm%-wUgj  
Decenter X tolerance on surfaces 1 through 3 3D7phq>.q  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 J 9k~cz  
Change in Focus                :       0.000000                            0.000000 3WdANR  
Decenter Y tolerance on surfaces 1 through 3 =:'a)o  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 gI~jf- w  
Change in Focus                :       0.000000                            0.000000 D8_-Dvp7H  
Tilt X tolerance on surfaces 1 through 3 (degrees) 8[z& g%u  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ?r6uEZ  
Change in Focus                :       0.000000                            0.000000 ze%)fZI0f  
Tilt Y tolerance on surfaces 1 through 3 (degrees) (hX}O>  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3UX})mW  
Change in Focus                :       0.000000                            0.000000 cvf#^Cu   
Decenter X tolerance on surface 1 $lrq*Nf9c  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E :Y *;  
Change in Focus                :       0.000000                            0.000000 KEj-y+  
Decenter Y tolerance on surface 1 ((%g\&D  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 [P_1
a`b  
Change in Focus                :       0.000000                            0.000000 7[ra#>e8'  
Tilt X tolerance on surface (degrees) 1 7e-l`]  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851
Y|iALrx  
Change in Focus                :       0.000000                            0.000000 $r=Ud >  
Tilt Y tolerance on surface (degrees) 1 FVcooV  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 K:eP Il{JE  
Change in Focus                :       0.000000                            0.000000 MoP0qNk  
Decenter X tolerance on surface 2 pYs"Y;%  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 D~Y3\KP  
Change in Focus                :       0.000000                            0.000000 l;g8_uyjv7  
Decenter Y tolerance on surface 2 zZ=.riK  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .sDVBT'%  
Change in Focus                :       0.000000                            0.000000 V+l>wMeo  
Tilt X tolerance on surface (degrees) 2 e$^O_e  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 "8"7AoE  
Change in Focus                :       0.000000                            0.000000 7MT[fA8^  
Tilt Y tolerance on surface (degrees) 2 i'%:z]hp9  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 yVM 1W"Q  
Change in Focus                :       0.000000                            0.000000 AcYL3  
Decenter X tolerance on surface 3 daZY;_{"o  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `jb?6;15  
Change in Focus                :       0.000000                            0.000000 $fY4amX6Z  
Decenter Y tolerance on surface 3 RSY{I
Y  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195  :RW0<  
Change in Focus                :       0.000000                            0.000000 h&vq}  
Tilt X tolerance on surface (degrees) 3 9c1n  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 {^bs }($J  
Change in Focus                :       0.000000                            0.000000 eID"&SSU  
Tilt Y tolerance on surface (degrees) 3 of^N4  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *Gm
%Dn  
Change in Focus                :       0.000000                            0.000000 .Go3'$'v  
Irregularity of surface 1 in fringes GIDC'  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 zKWcDbj  
Change in Focus                :       0.000000                            0.000000 h2Z Gh  
Irregularity of surface 2 in fringes '@iS5Fni  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 KutR l$,
 
Change in Focus                :       0.000000                            0.000000 C/+8lA6NV  
Irregularity of surface 3 in fringes -)aBS3  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 dHnId2@#  
Change in Focus                :       0.000000                            0.000000 s]r"-^eS3  
Index tolerance on surface 1 .Tdl'y:..  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 4y+]V~p  
Change in Focus                :       0.000000                            0.000000 E#T-2^nD  
Index tolerance on surface 2 U&/Jh^Yy  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 o=2y`Eq  
Change in Focus                :       0.000000                           -0.000000 xgtdmv%  
Tp`by 1s  
Worst offenders: % j7lLSusX  
Type                      Value      Criterion        Change %9=^#e+pE  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ~OEP)c\k  
TSTY   2             0.20000000     0.35349910    -0.19053324 81/Bn!  
TSTX   2            -0.20000000     0.35349910    -0.19053324 ~'HwNzDQc  
TSTX   2             0.20000000     0.35349910    -0.19053324 "@E1^
  
TSTY   1            -0.20000000     0.42678383    -0.11724851 (CH F=g  
TSTY   1             0.20000000     0.42678383    -0.11724851 2|#3rF  
TSTX   1            -0.20000000     0.42678383    -0.11724851 [Qv%  
TSTX   1             0.20000000     0.42678383    -0.11724851 LeY\{w  
TSTY   3            -0.20000000     0.42861670    -0.11541563 y^:g"|q  
TSTY   3             0.20000000     0.42861670    -0.11541563 hsljJvs
 
A[ZJS  
Estimated Performance Changes based upon Root-Sum-Square method: Ni GK|Z  
Nominal MTF                 :     0.54403234 c% 0h!zF  
Estimated change            :    -0.36299231 S~}?6/G.  
Estimated MTF               :     0.18104003 Vl?R?K=`~J  
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Compensator Statistics: Ni{(=&*=  
Change in back focus: (9$/r/-a  
Minimum            :        -0.000000 q0w5ADd
 
Maximum            :         0.000000 C 9,p-  
Mean               :        -0.000000 )D@1V=9,  
Standard Deviation :         0.000000 z8= Gc$w!  
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Monte Carlo Analysis: $d!Sl a  
Number of trials: 20 !/['wv@  
uyxU>yHV<g  
Initial Statistics: Normal Distribution oyJ/Oe {  
ALwkX"AN  
  Trial       Criterion        Change v)+wr[Qs  
      1     0.42804416    -0.11598818 M0x5s@  
Change in Focus                :      -0.400171 RWXj)H)w  
      2     0.54384387    -0.00018847 ,$sq]_t  
Change in Focus                :       1.018470 ev#d1s|<S  
      3     0.44510003    -0.09893230 /%rbXrR4w  
Change in Focus                :      -0.601922 fh )QX  
      4     0.18154684    -0.36248550 =6j  5,  
Change in Focus                :       0.920681 <h U ZD;  
      5     0.28665820    -0.25737414 ^QB/{9#  
Change in Focus                :       1.253875 v(=fV/  
      6     0.21263372    -0.33139862 pt(GpbtWK  
Change in Focus                :      -0.903878 Q{H88g^=J  
      7     0.40051424    -0.14351809 ~5`rv1$  
Change in Focus                :      -1.354815 IL}pVa00{n  
      8     0.48754161    -0.05649072 *WfOB2rU  
Change in Focus                :       0.215922 )dJM  
      9     0.40357468    -0.14045766 +fAAkO*GP  
Change in Focus                :       0.281783 x7l)i!/$  
     10     0.26315315    -0.28087919 vf~q%+UqK  
Change in Focus                :      -1.048393 C\.?3  
     11     0.26120585    -0.28282649 FD#?pVyPn^  
Change in Focus                :       1.017611 W&z.O  
     12     0.24033815    -0.30369419 Gc4N)oq)}b  
Change in Focus                :      -0.109292 h^~eTi;c]Q  
     13     0.37164046    -0.17239188 AT+|}B!  
Change in Focus                :      -0.692430 H4KwbTT"+  
     14     0.48597489    -0.05805744 _xAdvr' W  
Change in Focus                :      -0.662040 8:$kFy\A'  
     15     0.21462327    -0.32940907 7u!R 'D  
Change in Focus                :       1.611296 |vTirZP  
     16     0.43378226    -0.11025008 *0l^/jqn:  
Change in Focus                :      -0.640081 W}WGg|ug  
     17     0.39321881    -0.15081353 2[9hl@=%  
Change in Focus                :       0.914906 ?O\n!
c  
     18     0.20692530    -0.33710703 cpFw]w%]  
Change in Focus                :       0.801607 %9-).k  
     19     0.51374068    -0.03029165 
-G;4['p  
Change in Focus                :       0.947293 !F;W#Gc  
     20     0.38013374    -0.16389860 O<iE,PN)  
Change in Focus                :       0.667010 TxN#3m?G  
*ta|,  
Number of traceable Monte Carlo files generated: 20 R7x
4v  

U&wVe$  
Nominal     0.54403234 \KLWOj%  
Best        0.54384387    Trial     2 #R305  
Worst       0.18154684    Trial     4 ^z9ITGB~tV  
Mean        0.35770970 #?!)-Q%  
Std Dev     0.11156454 4zpprh+`K  
f Nm Sx  
/Kw
o^Q{  
Compensator Statistics: bX|Z||img  
Change in back focus: HP.
j.  
Minimum            :        -1.354815 @5acTYQ  
Maximum            :         1.611296 7,j}]  
Mean               :         0.161872 Nypa,_9}  
Standard Deviation :         0.869664 ~6
kEpa  
Z)62/`C)  
90% >       0.20977951               ,Ztj  
80% >       0.22748071               lsY5QE:Qrp  
50% >       0.38667627               %Ni)^   
20% >       0.46553746               ]#j]yGV  
10% >       0.50064115                j@ UIN3  
< I8hy$+6  
End of Run. i)+@'!6  
NLoJmOi;L7  
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 B6MMn.  
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+7^%fX;3pW  
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 ~-A5h(  
x}AWWmXv  
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                 %qV=PC  
80% >       0.22748071                 q}*(rR9/Br  
50% >       0.38667627                 ; "ux{ .  
20% >       0.46553746                 !0zbWB9  
10% >       0.50064115 GXr9J rs.e  
plh.-"   
最后这个数值是MTF值呢，还是MTF的公差？ r.lH@}i%n  
,5mK_iUw3  
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？？？   ~-.}]N+([  
O6pswMhAc  
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  : 7=i8$v&GX  
90% >       0.20977951                 2;Vss<hR4A  
80% >       0.22748071                 5.m&93P  
50% >       0.38667627                 hgIqr^N9  
20% >       0.46553746                 'NJGez'b,  
10% >       0.50064115 w0qrh\3du  
....... wJyrF  

g_X-.3=2K  
:btb|^C  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   SeuC7!q{  
Mode                : Sensitivities "/e_[_j  
Sampling            : 2 jfmHc(fX4  
Nominal Criterion   : 0.54403234 4
4Dytpvg  
Test Wavelength     : 0.6328 YcQ$nZAU  
.8o?`  
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？ Vz.G!*>Dg  
Wd`*<+t]  
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