[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 C=t:0.:PJ  
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然后添加了默认公差分析，基本没变 \_#0Z+pX  
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然后运行分析的结果如下： &kB[jz_[A  
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Analysis of Tolerances !:,d^L!bh  
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File : E:\光学设计资料\zemax练习\f500.ZMX {:$0j|zL1  
Title: IpXg2QbN  
Date : TUE JUN 21 2011 Ua#*kTF  
9 %4Pt=v~d  
Units are Millimeters. 9t(B{S  
All changes are computed using linear differences. Oj:O-PtN2  
su<_?'uH  
Paraxial Focus compensation only. L[)+J2_<  
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WARNING: Solves should be removed prior to tolerancing. )NGBA."t  
mHE4Es0  
Mnemonics: s1<_=sfnT  
TFRN: Tolerance on curvature in fringes. 6A7UW7/  
TTHI: Tolerance on thickness. #IDDKUE  
TSDX: Tolerance on surface decentering in x. [Qa0uM#SU  
TSDY: Tolerance on surface decentering in y. KW+ps16~  
TSTX: Tolerance on surface tilt in x (degrees). MeW8aLr  
TSTY: Tolerance on surface tilt in y (degrees). j wlmWO6  
TIRR: Tolerance on irregularity (fringes). JAj<*TB.%  
TIND: Tolerance on Nd index of refraction. +V4BJ/H  
TEDX: Tolerance on element decentering in x. 41>Bm*if  
TEDY: Tolerance on element decentering in y. 1!/cd;{B  
TETX: Tolerance on element tilt in x (degrees). (k"|k  
TETY: Tolerance on element tilt in y (degrees). ELeR5xT  
pMM-LY7%{  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. WM}:%T-  
'\H{Y[  
WARNING: Boundary constraints on compensators will be ignored. ?u` ?_us  
lb2mWsg"  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm ,GS8Gu  
Mode                : Sensitivities \K9XG/XIx  
Sampling            : 2 oOy@X =cw  
Nominal Criterion   : 0.54403234 )p4o4aM  
Test Wavelength     : 0.6328 Hq8<g$  
V=Iau_  
Jg/l<4,K,  
Fields: XY Symmetric Angle in degrees #!u P>/  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY [Maon.t!l  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 7=0uG  
TD].*9  
Sensitivity Analysis: FjRJSMwO,  
(P~Jzp9u  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 2x{@19w)C  
Type                      Value      Criterion        Change          Value      Criterion        Change T5)Xl'Q  
Fringe tolerance on surface 1 {H#1wu^]O$  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 2/sD#vC  
Change in Focus                :      -0.000000                            0.000000 9Gfm?.O5  
Fringe tolerance on surface 2 ?t$sju(\  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 HWT0oh]  
Change in Focus                :       0.000000                            0.000000 aDb@u3X@  
Fringe tolerance on surface 3 9G` 2t~%  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 N{46DS  
Change in Focus                :      -0.000000                            0.000000 ZZA!Y9ia2  
Thickness tolerance on surface 1 t }
7hD  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 K~z*P0g*  
Change in Focus                :       0.000000                            0.000000 9*GwW&M%1_  
Thickness tolerance on surface 2 I:U/%cr,  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 
H
AEgR  
Change in Focus                :       0.000000                           -0.000000 x=Qy{eIe  
Decenter X tolerance on surfaces 1 through 3 \)eHf 7H  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 e'[T5HI  
Change in Focus                :       0.000000                            0.000000 gZ
uk(  
Decenter Y tolerance on surfaces 1 through 3 VQU[5C  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 g4<%t,(88E  
Change in Focus                :       0.000000                            0.000000 %P0dY:L~  
Tilt X tolerance on surfaces 1 through 3 (degrees) JiEcPii  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 n{d}]V@  
Change in Focus                :       0.000000                            0.000000 d#Sc4xuf  
Tilt Y tolerance on surfaces 1 through 3 (degrees) q@F"fjWBr  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 [6K2V:6:  
Change in Focus                :       0.000000                            0.000000 fO[X<|9  
Decenter X tolerance on surface 1 h?j;*|o-  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 @k<RX'~q  
Change in Focus                :       0.000000                            0.000000 Y'i0=w6G  
Decenter Y tolerance on surface 1 nMx0+N1  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 Ziuf<X{  
Change in Focus                :       0.000000                            0.000000 \#1!qeF  
Tilt X tolerance on surface (degrees) 1 6[$kEKOY=  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 `IOp*8  
Change in Focus                :       0.000000                            0.000000 Msn)jh
  
Tilt Y tolerance on surface (degrees) 1 "Ol;0>$  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 V]L$
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Change in Focus                :       0.000000                            0.000000 Fx4
C]S  
Decenter X tolerance on surface 2 & d\`=e  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 #i-!:6sLA  
Change in Focus                :       0.000000                            0.000000 /O|!Sg{  
Decenter Y tolerance on surface 2 9-o{[  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 p|,K2^?Y  
Change in Focus                :       0.000000                            0.000000 *h1Zqb  
Tilt X tolerance on surface (degrees) 2 Ictc '#y  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 $Rv}L'L  
Change in Focus                :       0.000000                            0.000000 H.uflO  
Tilt Y tolerance on surface (degrees) 2 c=I!?a"  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *U.$=4Az  
Change in Focus                :       0.000000                            0.000000 {.bLh0  
Decenter X tolerance on surface 3 l~Kn-S{  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 4U<'3~RN  
Change in Focus                :       0.000000                            0.000000 ?)<zrE5p  
Decenter Y tolerance on surface 3 5IW^^<kiu  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %=/Y~ml?  
Change in Focus                :       0.000000                            0.000000 h#zx^F1  
Tilt X tolerance on surface (degrees) 3 [?RLvhU|  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 +1Si>I  
Change in Focus                :       0.000000                            0.000000 jPPaL]  
Tilt Y tolerance on surface (degrees) 3 "sz LTC]*6  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 mz1Xk ]nE  
Change in Focus                :       0.000000                            0.000000 Tr)a6Cf  
Irregularity of surface 1 in fringes d%1S6eYa'  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 w!:u|  
Change in Focus                :       0.000000                            0.000000 ?Ee?Ol?i2  
Irregularity of surface 2 in fringes 'Vy$d<@s[  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 `PSr64h
:D  
Change in Focus                :       0.000000                            0.000000 Ptzha?}OZ  
Irregularity of surface 3 in fringes lk \|EG  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 NhCO C  
Change in Focus                :       0.000000                            0.000000 V J){@  
Index tolerance on surface 1 1KruGq~  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 tH5f;mY,  
Change in Focus                :       0.000000                            0.000000 ~Cks)mJs  
Index tolerance on surface 2 \4K8*`$  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 `>?\MWyu  
Change in Focus                :       0.000000                           -0.000000 ?8-e@/E#x  
+hY/4Tx<  
Worst offenders: ;&
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Type                      Value      Criterion        Change JQ+4 SomK  
TSTY   2            -0.20000000     0.35349910    -0.19053324 jt"p Js'  
TSTY   2             0.20000000     0.35349910    -0.19053324 dLD"Cx  
TSTX   2            -0.20000000     0.35349910    -0.19053324 4dMwJ
"V  
TSTX   2             0.20000000     0.35349910    -0.19053324 @MtF^y
  
TSTY   1            -0.20000000     0.42678383    -0.11724851 L]9!
-E  
TSTY   1             0.20000000     0.42678383    -0.11724851 5Ag]1k{  
TSTX   1            -0.20000000     0.42678383    -0.11724851 (z2)<_bXJ  
TSTX   1             0.20000000     0.42678383    -0.11724851 cIl^5eE^Pq  
TSTY   3            -0.20000000     0.42861670    -0.11541563 5zpk6FR$  
TSTY   3             0.20000000     0.42861670    -0.11541563 q*DR~Ov  
(d^pYPr{  
Estimated Performance Changes based upon Root-Sum-Square method: jA=uK6m  
Nominal MTF                 :     0.54403234 ]!YzbvoR  
Estimated change            :    -0.36299231 :b=`sUn<X+  
Estimated MTF               :     0.18104003 m f4@g05  
2r?g|< :  
Compensator Statistics: ]_d(YHYf  
Change in back focus: kC|tv{g#>  
Minimum            :        -0.000000 K_]LK  
Maximum            :         0.000000 3(^9K2.s}  
Mean               :        -0.000000 kt[#@M!}  
Standard Deviation :         0.000000 F!pUfF,&  
&^9f)xb  
Monte Carlo Analysis: FX}<F0([?  
Number of trials: 20 F`Q,pBl1p6  
H.Jcp|k[;  
Initial Statistics: Normal Distribution ^%go\ C ;  
m|24)%Vj;=  
  Trial       Criterion        Change k]R O=/ ?M  
      1     0.42804416    -0.11598818 1(q!.lPc  
Change in Focus                :      -0.400171 `~@BU  
      2     0.54384387    -0.00018847 ^Xa-)Pu  
Change in Focus                :       1.018470 gQ?>%t]  
      3     0.44510003    -0.09893230 Vy}:Q[  
Change in Focus                :      -0.601922 g'pE z  
      4     0.18154684    -0.36248550  `Yoafa  
Change in Focus                :       0.920681 ,e.y4 vnU  
      5     0.28665820    -0.25737414 Oq+C<}eg  
Change in Focus                :       1.253875 H@G7oK  
      6     0.21263372    -0.33139862 2$\1
v*:  
Change in Focus                :      -0.903878 . s? ''/(  
      7     0.40051424    -0.14351809 =b`>ggw#  
Change in Focus                :      -1.354815 0>Mm |x*5  
      8     0.48754161    -0.05649072 E_ mgYW*5  
Change in Focus                :       0.215922 YXV![gw0  
      9     0.40357468    -0.14045766 7t@jj%F  
Change in Focus                :       0.281783 gkBat
(Uc  
     10     0.26315315    -0.28087919 AN
T^&NjJ7  
Change in Focus                :      -1.048393 NNe'5q9  
     11     0.26120585    -0.28282649 Ij=hmTl{P  
Change in Focus                :       1.017611 HkEp}R  
     12     0.24033815    -0.30369419 "DRp4;  
Change in Focus                :      -0.109292 q".l:T%|C}  
     13     0.37164046    -0.17239188 "Jv&=zJ  
Change in Focus                :      -0.692430 [c>X Q  
     14     0.48597489    -0.05805744 [W^6=7EO  
Change in Focus                :      -0.662040 '7Te{^<FQ$  
     15     0.21462327    -0.32940907 /x$jd)C  
Change in Focus                :       1.611296 HO' ELiZ_q  
     16     0.43378226    -0.11025008 CuuHRvU8  
Change in Focus                :      -0.640081 xg3G  
     17     0.39321881    -0.15081353 0Fbq/63  
Change in Focus                :       0.914906 l l&iMj]  
     18     0.20692530    -0.33710703 {jk {K6 }  
Change in Focus                :       0.801607 7RdL/21K  
     19     0.51374068    -0.03029165 bE0S)b)  
Change in Focus                :       0.947293 X-n'?=  
     20     0.38013374    -0.16389860 z#,?*v  
Change in Focus                :       0.667010 o &Nr5S  
jRgv 8n
  
Number of traceable Monte Carlo files generated: 20 1 #EmZ{*  
, / 4}CM  
Nominal     0.54403234 'BUdySng  
Best        0.54384387    Trial     2 J3q}DDnEo  
Worst       0.18154684    Trial     4 iT.hXzPzr*  
Mean        0.35770970 ENqJ9%sk7  
Std Dev     0.11156454 1%1-j  
F'SOl*v(s5  
eQC`e#%  
Compensator Statistics: i ;X'1TN(y  
Change in back focus: 4AP<mo  
Minimum            :        -1.354815 @<alWBS  
Maximum            :         1.611296 Nk^#Sa?  
Mean               :         0.161872 {BKI8vy  
Standard Deviation :         0.869664 %kVpW& ~  
JY>]u*=  
90% >       0.20977951               \J1Jn~  
80% >       0.22748071               +j`*?pPD(.  
50% >       0.38667627               u9VJ{F  
20% >       0.46553746               )ZiJl5l@  
10% >       0.50064115                p&ZD1qa  

#>>-:?X  
End of Run. a nIdCOh  
I.(/j  
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 1lMU('r%  
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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 a&y%|Gs^f  
RJd55+h  
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                 !@bN  
80% >       0.22748071                 =DF7l<&km  
50% >       0.38667627                  8tPq5i  
20% >       0.46553746                 }vcC4 =t/  
10% >       0.50064115 =u73AM}  
t ZFG`'/  
最后这个数值是MTF值呢，还是MTF的公差？ WXXLD:gxI  
J^1w& 40
 
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？？？   tQUp1i{j\  
PVV\@  
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  :
7P:0XML}  
90% >       0.20977951                 #Rjm3#gc  
80% >       0.22748071                 QTK\"  
50% >       0.38667627                 A3yVT8  
20% >       0.46553746                 _W tSZmW?  
10% >       0.50064115 )!p=0&z@{  
....... ]#))#-&1  

`;5UlkVZ5  
"t`r_Aw  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   -5kq9Dy\,  
Mode                : Sensitivities 8p>%}LX/  
Sampling            : 2 FhAuTZk  
Nominal Criterion   : 0.54403234 M1Od%nz3  
Test Wavelength     : 0.6328 cV)fe`Gg  
R 5bt~U  
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？ r"Pj,}$A  
-md2Z0^ Kc  
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