[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 ZlC+DXg#S  
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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 w]qM  
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图片:2.jpg

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然后运行分析的结果如下： deYv&=SPl  
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Analysis of Tolerances a"YVr'|  
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File : E:\光学设计资料\zemax练习\f500.ZMX ?q4`&";{3  
Title: I^f|U
 
Date : TUE JUN 21 2011 [N~7PNdS  
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Units are Millimeters. pm=O.)g4`  
All changes are computed using linear differences. n[!QrEeR},  
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Paraxial Focus compensation only. 6|q"lS*$S  
n6Uh%rO7S|  
WARNING: Solves should be removed prior to tolerancing. 3,v/zcV  
H?;+C/-K`_  
Mnemonics: L`<#vi  
TFRN: Tolerance on curvature in fringes. k?Hi_;o  
TTHI: Tolerance on thickness. 7Dssr [  
TSDX: Tolerance on surface decentering in x. ;0kAm Vy  
TSDY: Tolerance on surface decentering in y. T'7>4MT(  
TSTX: Tolerance on surface tilt in x (degrees). 9*FA=E  
TSTY: Tolerance on surface tilt in y (degrees). E<-W & a}  
TIRR: Tolerance on irregularity (fringes). #y#TEw,  
TIND: Tolerance on Nd index of refraction. =/a`X[9vI  
TEDX: Tolerance on element decentering in x. ` ~m/  
TEDY: Tolerance on element decentering in y. @BnK C&{  
TETX: Tolerance on element tilt in x (degrees). {ST8'hY  
TETY: Tolerance on element tilt in y (degrees). k0I$x:c  
t*Ro2QZ  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Ji,;ri2
i  
 Xp<O  
WARNING: Boundary constraints on compensators will be ignored. ]7k:3"wH  
P]^8Enp
 
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm BTr;F]W  
Mode                : Sensitivities 1&e8vVN  
Sampling            : 2 y_[VhZ%  
Nominal Criterion   : 0.54403234 <HJLs+C  
Test Wavelength     : 0.6328 H(n fHp.3  
'=+N )O  
Rh6CV  
Fields: XY Symmetric Angle in degrees Q`J U[nY  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY j^
b&Q  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 :I";&7C  
@qcUxu4  
Sensitivity Analysis: AFsieJ  
\NDW@!X  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| xv$fw>  
Type                      Value      Criterion        Change          Value      Criterion        Change vxPr)"Vvz  
Fringe tolerance on surface 1 rr`_\ut  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 }vB{6E+h/w  
Change in Focus                :      -0.000000                            0.000000 "dndhoMq  
Fringe tolerance on surface 2 w_`;Mn%p  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 r`FTiPD.C  
Change in Focus                :       0.000000                            0.000000 n3V$Xtxw  
Fringe tolerance on surface 3 9({ 9r[U  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 2<0".5+I  
Change in Focus                :      -0.000000                            0.000000 P;y!Y/$C  
Thickness tolerance on surface 1 ;dZZOocV1  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 3VMaD@nYa  
Change in Focus                :       0.000000                            0.000000 @/As|)  
Thickness tolerance on surface 2 dmkGIg}  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 S]fkA6v  
Change in Focus                :       0.000000                           -0.000000 N!?~Dgw  
Decenter X tolerance on surfaces 1 through 3 8TH;6-RT  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ;A"i.:ZT  
Change in Focus                :       0.000000                            0.000000 NA@Z$Gy  
Decenter Y tolerance on surfaces 1 through 3 4$2HO`@uN  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 A;ZluQ  
Change in Focus                :       0.000000                            0.000000 obbg#,  
Tilt X tolerance on surfaces 1 through 3 (degrees) 7w5l[a/  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 23=wz%tF  
Change in Focus                :       0.000000                            0.000000 /;q3Q#  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ,{iMF (Nj  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $@{d\@U  
Change in Focus                :       0.000000                            0.000000 15|gG<-  
Decenter X tolerance on surface 1 p|0SA=?k"  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 1M_6X7PH  
Change in Focus                :       0.000000                            0.000000 %|/\Qu  
Decenter Y tolerance on surface 1 vqU
Yr  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 OS L~a_  
Change in Focus                :       0.000000                            0.000000 U[yA`7Zs}  
Tilt X tolerance on surface (degrees) 1 fK@UlMC]7  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 33}p02#  
Change in Focus                :       0.000000                            0.000000 ^N ;TCn  
Tilt Y tolerance on surface (degrees) 1 'R$/Qt;uA  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 V.Lk70 \  
Change in Focus                :       0.000000                            0.000000 o4rf[.z  
Decenter X tolerance on surface 2 `7``1TL  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 l'!_km0{d
 
Change in Focus                :       0.000000                            0.000000 bS|h~B]rd  
Decenter Y tolerance on surface 2 's"aPqF?  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ij?]fXf:)y  
Change in Focus                :       0.000000                            0.000000 )WEOqaR]  
Tilt X tolerance on surface (degrees) 2 :[_k .1-+  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 n]l3 )u  
Change in Focus                :       0.000000                            0.000000 Y.52`s6F  
Tilt Y tolerance on surface (degrees) 2 n*AN/LB
p  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  HsG3s?*  
Change in Focus                :       0.000000                            0.000000 )TNG0[  
Decenter X tolerance on surface 3 b\NY!)B  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~:0U.v_V  
Change in Focus                :       0.000000                            0.000000 >"zN`  
Decenter Y tolerance on surface 3 {c $8?6  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 GIkVU6Q}  
Change in Focus                :       0.000000                            0.000000 nGJ+.z  
Tilt X tolerance on surface (degrees) 3 |D;I>
O^"R  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 FVOPC:}bj  
Change in Focus                :       0.000000                            0.000000 _lH:%E*  
Tilt Y tolerance on surface (degrees) 3 7/=r-  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 UY\E uA9  
Change in Focus                :       0.000000                            0.000000 @9]TjZd  
Irregularity of surface 1 in fringes 4Dd]:2|D  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 }&l%>P  
Change in Focus                :       0.000000                            0.000000 77]Fp(uI  
Irregularity of surface 2 in fringes d<cQYI4V  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 `- 9p)@'8k  
Change in Focus                :       0.000000                            0.000000 A(C0/|#V  
Irregularity of surface 3 in fringes c/-'^+9  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 d(D|rf,av  
Change in Focus                :       0.000000                            0.000000 ? a*yK8S  
Index tolerance on surface 1 tg2+Z\0)4g  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 N
71%l  
Change in Focus                :       0.000000                            0.000000 S;!7/z  
Index tolerance on surface 2 SmP&wNHQf  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Z7MGBwP(  
Change in Focus                :       0.000000                           -0.000000 `4|:8@,3{  
:{#w-oC>6P  
Worst offenders: 3qp\jh=FE  
Type                      Value      Criterion        Change UtB~joaR  
TSTY   2            -0.20000000     0.35349910    -0.19053324 CY@#_z  
TSTY   2             0.20000000     0.35349910    -0.19053324 Is ( Ji  
TSTX   2            -0.20000000     0.35349910    -0.19053324 R36A_  
TSTX   2             0.20000000     0.35349910    -0.19053324 .Ax]SNZ+:A  
TSTY   1            -0.20000000     0.42678383    -0.11724851 R8, g^N  
TSTY   1             0.20000000     0.42678383    -0.11724851 u>03l(X6f  
TSTX   1            -0.20000000     0.42678383    -0.11724851 W_]onq6  
TSTX   1             0.20000000     0.42678383    -0.11724851 n8)eC2A  
TSTY   3            -0.20000000     0.42861670    -0.11541563 eyByAT~W,  
TSTY   3             0.20000000     0.42861670    -0.11541563 Q,>]f@m  
?$H=n{iW  
Estimated Performance Changes based upon Root-Sum-Square method: HAcC& s8  
Nominal MTF                 :     0.54403234 P[gYENQ   
Estimated change            :    -0.36299231 Gl>*e|}  
Estimated MTF               :     0.18104003 8/CK(G  
 }}d,xI  
Compensator Statistics: gCI{g.[I!  
Change in back focus: KN\tRE  
Minimum            :        -0.000000 p}a0z?  
Maximum            :         0.000000 zW; sr.  
Mean               :        -0.000000 K|wB0TiXP  
Standard Deviation :         0.000000 C.VU"= -  
kfs[*ku  
Monte Carlo Analysis: 1n>(CwLG"  
Number of trials: 20 'iEu1! t\0  
G9ra;.  
Initial Statistics: Normal Distribution -j}zr yG-  

AKUmh  
  Trial       Criterion        Change hyC]{E  
      1     0.42804416    -0.11598818 >+ku:<Hw%.  
Change in Focus                :      -0.400171 zHQSx7Ow 5  
      2     0.54384387    -0.00018847 vqJq=\ .m  
Change in Focus                :       1.018470 Jw -3G3h  
      3     0.44510003    -0.09893230 |Y;[)s =q  
Change in Focus                :      -0.601922 .vtV2lq  
      4     0.18154684    -0.36248550 t`"pn<  
Change in Focus                :       0.920681 43BqNQ0  
      5     0.28665820    -0.25737414 +(8Z8]Jf  
Change in Focus                :       1.253875 zXv2plw(  
      6     0.21263372    -0.33139862 SH1)@K-  
Change in Focus                :      -0.903878 ,uCgC4EP  
      7     0.40051424    -0.14351809 .]K{8[:hq  
Change in Focus                :      -1.354815 Q;eY]l8  
      8     0.48754161    -0.05649072 DYW&6+%,hO  
Change in Focus                :       0.215922 N|  
      9     0.40357468    -0.14045766 LZ1)zoJ  
Change in Focus                :       0.281783 '"]U+aIg  
     10     0.26315315    -0.28087919 Xny{8Oo<1?  
Change in Focus                :      -1.048393 7E\k97#G  
     11     0.26120585    -0.28282649 ;a~ e  
Change in Focus                :       1.017611 ")eY{C  
     12     0.24033815    -0.30369419 Z3z"c B  
Change in Focus                :      -0.109292 EVDcj,b"^  
     13     0.37164046    -0.17239188 vW`[CEm^X  
Change in Focus                :      -0.692430 %. W56  
     14     0.48597489    -0.05805744 1
R7w  
Change in Focus                :      -0.662040 ~qezr\$2  
     15     0.21462327    -0.32940907 .CBb%onx  
Change in Focus                :       1.611296 &O^t]7  
     16     0.43378226    -0.11025008 >AUzsQ  
Change in Focus                :      -0.640081 c4(og|ifk  
     17     0.39321881    -0.15081353 _.^`DP>  
Change in Focus                :       0.914906 j4}Q  
     18     0.20692530    -0.33710703 H[U"eS."  
Change in Focus                :       0.801607 ~r?VXO p"  
     19     0.51374068    -0.03029165 `clp#l.ii  
Change in Focus                :       0.947293 DN;3VT.-  
     20     0.38013374    -0.16389860 K5}0!_)G  
Change in Focus                :       0.667010 @ 3,:G$,  
..UA*#%1  
Number of traceable Monte Carlo files generated: 20 @*-t.b2k  
i@#=Rxp  
Nominal     0.54403234 E5g|*M.+f  
Best        0.54384387    Trial     2 <^Jdl.G  
Worst       0.18154684    Trial     4 jAy0k   
Mean        0.35770970 "WzD+<oL  
Std Dev     0.11156454 B PG&R  
z2[{3Kd*  
5
N:IH@  
Compensator Statistics: Tx|y!uHh  
Change in back focus: WlmkM?@  
Minimum            :        -1.354815 9i+`,r  
Maximum            :         1.611296 .pyNET  
Mean               :         0.161872 \"6?*L|]  
Standard Deviation :         0.869664 c]R27r E  
3U%kf<m=  
90% >       0.20977951               lwm 9gka  
80% >       0.22748071               3_ko=& B$  
50% >       0.38667627               t"jiLO
Q[6  
20% >       0.46553746               qpV"ii  
10% >       0.50064115                =TJ9Gr/R&:  
@z>DJ>htN  
End of Run. 1\-r5e; BE  
eD!mR3Ai@D  
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 H7(D8.y )  

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 %BF,;(P  
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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                 |5jrl|  
80% >       0.22748071                 bj
AI7B8As  
50% >       0.38667627                 }46Zfg\T6n  
20% >       0.46553746                 6Ta+f3V  
10% >       0.50064115 w)&?9?~  
#4<=Ira5  
最后这个数值是MTF值呢，还是MTF的公差？ YdyTt5-  
ZsSW{ffZ77  
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？？？   ~O|~M_Z  
NxnaH!wS  
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  : $gN\%X/n"1  
90% >       0.20977951                 [VqiF~o,  
80% >       0.22748071                 'n>44_7L  
50% >       0.38667627                 4f~sRu
bK  
20% >       0.46553746                 FPkk\[EU  
10% >       0.50064115 pJs`/  
....... 8EMBqhl  

ZZZ`@pXm;  
tQRbNY#}Z  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   j,;f#+O`g  
Mode                : Sensitivities (9ZW^flY  
Sampling            : 2 D "5|\  
Nominal Criterion   : 0.54403234 04&S.#+(  
Test Wavelength     : 0.6328 (T$cw(!  
;dMr2y`6  
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？ h*D -Vo  
?Fa$lE4  
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