[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 fuIv,lDA  
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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 I}]@e^ ~  
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图片:2.jpg

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然后运行分析的结果如下： *~lgU4  
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Analysis of Tolerances (gJ )]/n  
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File : E:\光学设计资料\zemax练习\f500.ZMX 9'*ZEl^?D  
Title: 4>wIF}\  
Date : TUE JUN 21 2011 94k)a8-!  
K1wN9D{t'  
Units are Millimeters. FsPDWy&x  
All changes are computed using linear differences. 1j)!d$8  
QGCdeE$K  
Paraxial Focus compensation only. J7xT6Q=  
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WARNING: Solves should be removed prior to tolerancing. H* L2gw  
kI[O{<kQ  
Mnemonics: o:Os_NaD  
TFRN: Tolerance on curvature in fringes. gBiQIhz  
TTHI: Tolerance on thickness. R_*D7|v  
TSDX: Tolerance on surface decentering in x.
7[.Q.3FL  
TSDY: Tolerance on surface decentering in y. +}L3T"  
TSTX: Tolerance on surface tilt in x (degrees). _Ag/gu2-?  
TSTY: Tolerance on surface tilt in y (degrees). {'Qk>G s  
TIRR: Tolerance on irregularity (fringes). Y" +1,?yH  
TIND: Tolerance on Nd index of refraction. W<hdb!bE  
TEDX: Tolerance on element decentering in x. en#g<on  
TEDY: Tolerance on element decentering in y. P)j9\ muc  
TETX: Tolerance on element tilt in x (degrees). JW.&uV1Z  
TETY: Tolerance on element tilt in y (degrees). OFL+Q~~C  
 yLIj4bf  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Zow^bzy4  
lXk-86[M  
WARNING: Boundary constraints on compensators will be ignored. SoGLsO+R  
HF=C8ZtlL  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm {hq ;7  
Mode                : Sensitivities 'GdlqbX(%  
Sampling            : 2 xS-nO_t 'E  
Nominal Criterion   : 0.54403234 }br<2?y,  
Test Wavelength     : 0.6328 C05{,w?  
y<x_v )k-  
a.U:B [v`  
Fields: XY Symmetric Angle in degrees W]Y!ZfGnN  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ?UhAjtYIS  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 D}/.;]w<[&  
~U*N'>'=)  
Sensitivity Analysis: h+u|MdOY\  
?$&rC0t  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| MdboWE5i  
Type                      Value      Criterion        Change          Value      Criterion        Change hA1hE?c`  
Fringe tolerance on surface 1 9X&qdA/q  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 AdS
_-Cm  
Change in Focus                :      -0.000000                            0.000000 #_L&  
Fringe tolerance on surface 2 pC.4AkEO  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ,) jB<`  
Change in Focus                :       0.000000                            0.000000  eV=sDx  
Fringe tolerance on surface 3 O|
TwG:!  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 lGBdQc]IL  
Change in Focus                :      -0.000000                            0.000000  (mD:[|.  
Thickness tolerance on surface 1 n~i4yn=  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 w8#>xV^~  
Change in Focus                :       0.000000                            0.000000 5$Q`P',*Ua  
Thickness tolerance on surface 2 Ywk[VD+.  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 AS"|r  
Change in Focus                :       0.000000                           -0.000000 QAnfxt6  
Decenter X tolerance on surfaces 1 through 3 Nv]/L+i  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Uk ;.Hrt.  
Change in Focus                :       0.000000                            0.000000 [Et\~'2w8=  
Decenter Y tolerance on surfaces 1 through 3 qa`(,iN  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 aYCzb7  
Change in Focus                :       0.000000                            0.000000
kL2sJX+  
Tilt X tolerance on surfaces 1 through 3 (degrees) vjRD?kF  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 @gGuV$Mw  
Change in Focus                :       0.000000                            0.000000 OiEaVPSI;  
Tilt Y tolerance on surfaces 1 through 3 (degrees) /Z_ [)PTH  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 \~j(ui|  
Change in Focus                :       0.000000                            0.000000 ]@T `qR  
Decenter X tolerance on surface 1 7TY"{?~O5  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .Tqvy)'  
Change in Focus                :       0.000000                            0.000000 J|8YB3K,  
Decenter Y tolerance on surface 1 {#Cm> @')  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 &: 8&;vk  
Change in Focus                :       0.000000                            0.000000 :%]R x&08  
Tilt X tolerance on surface (degrees) 1 %--5bwZi  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 JT^0AZ_*  
Change in Focus                :       0.000000                            0.000000 1Nu`@)D0  
Tilt Y tolerance on surface (degrees) 1 0DT2qM[,  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 emIbGkH  
Change in Focus                :       0.000000                            0.000000 R}<s~` Pl  
Decenter X tolerance on surface 2 ;|,Y2?  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 RA67w&  
Change in Focus                :       0.000000                            0.000000 &c ~)z\$  
Decenter Y tolerance on surface 2 I;Y`rGj  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 r:Cid*~m  
Change in Focus                :       0.000000                            0.000000 N|L5Ru
  
Tilt X tolerance on surface (degrees) 2 640V&<+v  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 7)wq9];w  
Change in Focus                :       0.000000                            0.000000 5R G5uH/-<  
Tilt Y tolerance on surface (degrees) 2 F
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TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 '2{o_<m  
Change in Focus                :       0.000000                            0.000000 ee` =B  
Decenter X tolerance on surface 3 "g[UX{L  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 q2i~<;Z)9  
Change in Focus                :       0.000000                            0.000000 YL0RQa  
Decenter Y tolerance on surface 3 M_I\:Q  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 w2AWdO6  
Change in Focus                :       0.000000                            0.000000 }CqIKoX.  
Tilt X tolerance on surface (degrees) 3 UbH=W(%  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Vk T3_f  
Change in Focus                :       0.000000                            0.000000 sxa (  
Tilt Y tolerance on surface (degrees) 3 W)O'(D  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 dBn.DU*B  
Change in Focus                :       0.000000                            0.000000 r{&"]'/X  
Irregularity of surface 1 in fringes 1_]l|`Po  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 n8,/olqwW  
Change in Focus                :       0.000000                            0.000000 Z] }@#/ n  
Irregularity of surface 2 in fringes >@
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TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 ghiElsBU  
Change in Focus                :       0.000000                            0.000000 syvi/6  
Irregularity of surface 3 in fringes 8 EH3zm4  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 .?NAq[H%  
Change in Focus                :       0.000000                            0.000000 n_glYSV!  
Index tolerance on surface 1 JwcP[w2  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 F4Z0g*^x  
Change in Focus                :       0.000000                            0.000000 0[Aa2H*  
Index tolerance on surface 2 iOxygs#p  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 >?<d}9X  
Change in Focus                :       0.000000                           -0.000000 (^\i(cfu6Q  
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Worst offenders: VvKH]>*  
Type                      Value      Criterion        Change [%:NR  
TSTY   2            -0.20000000     0.35349910    -0.19053324 7]bqs"t  
TSTY   2             0.20000000     0.35349910    -0.19053324 uM#/  
TSTX   2            -0.20000000     0.35349910    -0.19053324 k/O&,T77}J  
TSTX   2             0.20000000     0.35349910    -0.19053324 5H2|:GzUc  
TSTY   1            -0.20000000     0.42678383    -0.11724851 1cega1s3xR  
TSTY   1             0.20000000     0.42678383    -0.11724851 .j
w)e!<\N  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ZS]e}]Zwp  
TSTX   1             0.20000000     0.42678383    -0.11724851 1<5yG7SZ  
TSTY   3            -0.20000000     0.42861670    -0.11541563 i|Wn*~yFOO  
TSTY   3             0.20000000     0.42861670    -0.11541563 o 8U2vMH  
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Estimated Performance Changes based upon Root-Sum-Square method: ]W,g>91m  
Nominal MTF                 :     0.54403234 L_|Y_=r."  
Estimated change            :    -0.36299231 In2D32"F  
Estimated MTF               :     0.18104003 `R^VK-=C  
2BY:qz%:  
Compensator Statistics: t60m:k4J  
Change in back focus: )9O{4PbU!  
Minimum            :        -0.000000 KNhH4K2iP8  
Maximum            :         0.000000 Xqk$[peS  
Mean               :        -0.000000 rOGJ%|%(  
Standard Deviation :         0.000000 cAS5&T<  
Ycwb1e#  
Monte Carlo Analysis: P.0-(  
Number of trials: 20 0a5P@;"a  
';%g^!lM a  
Initial Statistics: Normal Distribution I uDk9<[b:  
zD'gGxM1  
  Trial       Criterion        Change V<7Gd8rDMM  
      1     0.42804416    -0.11598818 b;{C1aa>}  
Change in Focus                :      -0.400171 Df9}YI;?  
      2     0.54384387    -0.00018847 #0c`"2t&M  
Change in Focus                :       1.018470 JQqDUd  
      3     0.44510003    -0.09893230 "O`;zC  
Change in Focus                :      -0.601922
Hw Is7  
      4     0.18154684    -0.36248550 tznT*EQr  
Change in Focus                :       0.920681 "M tQj}  
      5     0.28665820    -0.25737414 ~+F: QrXcI  
Change in Focus                :       1.253875 V*N9D>C  
      6     0.21263372    -0.33139862 7blZAA?-  
Change in Focus                :      -0.903878 =@'"\ "Nh  
      7     0.40051424    -0.14351809 t9}XO M*  
Change in Focus                :      -1.354815 ZI1RB fR  
      8     0.48754161    -0.05649072 zV]0S o  
Change in Focus                :       0.215922 ':=C2x1d|  
      9     0.40357468    -0.14045766 fiZ8s
=J  
Change in Focus                :       0.281783 m:t$&  
     10     0.26315315    -0.28087919 $lQi0*
s  
Change in Focus                :      -1.048393 <KpQu%2(  
     11     0.26120585    -0.28282649 Z7v~;JzC#  
Change in Focus                :       1.017611 2:a
b
e  
     12     0.24033815    -0.30369419 .&ZVy{uP  
Change in Focus                :      -0.109292 2a^(8A`7W  
     13     0.37164046    -0.17239188 ATU@5,9  
Change in Focus                :      -0.692430 @P-7a`3*  
     14     0.48597489    -0.05805744 \?o%<c5{  
Change in Focus                :      -0.662040 `C1LR,J  
     15     0.21462327    -0.32940907 sM-*[Q=
_  
Change in Focus                :       1.611296 4Y]`> ;
w  
     16     0.43378226    -0.11025008 hug12Cu  
Change in Focus                :      -0.640081 >@X=E3  
     17     0.39321881    -0.15081353 Um~jp:6p  
Change in Focus                :       0.914906 s-*XAnot  
     18     0.20692530    -0.33710703 k}/: xN"  
Change in Focus                :       0.801607 8|l Yf%n>j  
     19     0.51374068    -0.03029165 3B0%:Jj  
Change in Focus                :       0.947293 UaBR;v-.B3  
     20     0.38013374    -0.16389860 75F&s,4+  
Change in Focus                :       0.667010 }yw\+fc  
Bw$-*FYE  
Number of traceable Monte Carlo files generated: 20 Rm RV8 WJ6  
^~0r+w
61  
Nominal     0.54403234 Q -+jG7vT  
Best        0.54384387    Trial     2 LV[4zo]=  
Worst       0.18154684    Trial     4 ^ey\ c1K  
Mean        0.35770970 OV[-m;h|  
Std Dev     0.11156454 M;E&@[5  
bhI8b/  
I}:/v$btM  
Compensator Statistics: M]W4S4&Y=  
Change in back focus: 29GiNy+ob  
Minimum            :        -1.354815 dcA0k  
Maximum            :         1.611296 A-~)7-  
Mean               :         0.161872 ~7m+cWC-+  
Standard Deviation :         0.869664 Ut%ie=c  
H0Tt(:.&  
90% >       0.20977951               _+{s^n=  
80% >       0.22748071               1~*_H_Q't  
50% >       0.38667627               PyoLk  
20% >       0.46553746               +X< Z 43  
10% >       0.50064115                pp:+SoyN  
;8A_-
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End of Run. B<)(7GTv7"  
#8`G&S*  
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 /; _"A)0  

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 83dOSS2  
>hXUq9;:  
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                 H: U_k68  
80% >       0.22748071                 )I*V('R6|  
50% >       0.38667627                 %~eZrG.  
20% >       0.46553746                 )~Q$ tM`  
10% >       0.50064115 !is8`8F8  
u%T.XgY=j  
最后这个数值是MTF值呢，还是MTF的公差？ 0D\FFfs  
s2tEyR+gW  
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:K%1_[  
dx~F [  
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  : l_$~~z ~  
90% >       0.20977951                 z<)?8tAgq  
80% >       0.22748071                 sYeZ.MacU  
50% >       0.38667627                 Mj[v _&N  
20% >       0.46553746                 >YLwWU<X  
10% >       0.50064115 lPx4I  
....... G`w7dn;&  

sfx:j~bsL  
V}3.K\7  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Z1*y$=D?3[  
Mode                : Sensitivities MX  qH  
Sampling            : 2 C <]rY  
Nominal Criterion   : 0.54403234 ck
-wMd  
Test Wavelength     : 0.6328 lO)
p  
O+c@B}[!  
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？ ;,4Z5+  
J?u",a]|H"  
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