[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 K84VeAe  
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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 }*s%|!{H  
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图片:2.jpg

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然后运行分析的结果如下： B+8B<xZ  
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Analysis of Tolerances % A8dO+W  
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File : E:\光学设计资料\zemax练习\f500.ZMX J52- qR/  
Title: vRn
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Date : TUE JUN 21 2011 JXA!l?%  
>p;cbp[ht  
Units are Millimeters. `rLy7\@;  
All changes are computed using linear differences. k-N` h  
"ABg,
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Paraxial Focus compensation only. xpjv@P  
@+
P7BE}  
WARNING: Solves should be removed prior to tolerancing. 3}lT"K  
c.;}e:)s  
Mnemonics: yE4X6  
TFRN: Tolerance on curvature in fringes. _bm8m
4Lk  
TTHI: Tolerance on thickness. Bc^MZ~+ip  
TSDX: Tolerance on surface decentering in x. Y3RaR 9  
TSDY: Tolerance on surface decentering in y. \Q m1+tg  
TSTX: Tolerance on surface tilt in x (degrees). <+\ w.!  
TSTY: Tolerance on surface tilt in y (degrees). PH]/*LEj  
TIRR: Tolerance on irregularity (fringes). qZz?i  
TIND: Tolerance on Nd index of refraction. oYn|>`+6:y  
TEDX: Tolerance on element decentering in x. AYnk.H-v  
TEDY: Tolerance on element decentering in y. h~R= ?%H[  
TETX: Tolerance on element tilt in x (degrees). N=[# "4I  
TETY: Tolerance on element tilt in y (degrees). {i09e1  
*[SOz)  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. k9Xv@v  
dNg5#?mzT5  
WARNING: Boundary constraints on compensators will be ignored. N& 683z  
GjD^\d/  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 4gkaCk{]  
Mode                : Sensitivities }cPH}[$zF  
Sampling            : 2 7)U08"  
Nominal Criterion   : 0.54403234 -mur`tC  
Test Wavelength     : 0.6328 lUJ~_`D  
;Or]x?-  
H;.${u^lhd  
Fields: XY Symmetric Angle in degrees w#Di  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY R@[gkj  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 #o/  
MaS"V`NI  
Sensitivity Analysis: R$Or&:E ^  
)=]u]7p}  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Q6lC:cB<  
Type                      Value      Criterion        Change          Value      Criterion        Change gXP)Y
N  
Fringe tolerance on surface 1 (SnrYO`#  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $9%UAqk9  
Change in Focus                :      -0.000000                            0.000000 Z| f~   
Fringe tolerance on surface 2 @3_[NI%  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 A`nw(f_/  
Change in Focus                :       0.000000                            0.000000 de<T5/  
Fringe tolerance on surface 3 #i1z&b#@  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 zZ*\v  
Change in Focus                :      -0.000000                            0.000000 t<DZW#  
Thickness tolerance on surface 1 N" =$S|Gs  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 r]<?,xx[  
Change in Focus                :       0.000000                            0.000000 ]XS[\qo  
Thickness tolerance on surface 2 2C59f
Xfd  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 !x@3U^${  
Change in Focus                :       0.000000                           -0.000000 Fk*C8  
Decenter X tolerance on surfaces 1 through 3 u>y/<9]q8  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 M?QK4Zxb6U  
Change in Focus                :       0.000000                            0.000000 =(cfo_B@K  
Decenter Y tolerance on surfaces 1 through 3 Ht_7:5v&  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 ,}jey72/k  
Change in Focus                :       0.000000                            0.000000 $FM:8^  
Tilt X tolerance on surfaces 1 through 3 (degrees) ZtofDp5B  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x3L0;:Fx8P  
Change in Focus                :       0.000000                            0.000000 ;T,`m^@zf  
Tilt Y tolerance on surfaces 1 through 3 (degrees) N}rc3d#  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 oT}-i [=}  
Change in Focus                :       0.000000                            0.000000 |ycN)zuE  
Decenter X tolerance on surface 1 lKyeG(  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 p.@_3^#|  
Change in Focus                :       0.000000                            0.000000 Y-fDYMm  
Decenter Y tolerance on surface 1 +F@ZVMp  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 :|PI_ $4H  
Change in Focus                :       0.000000                            0.000000 u`~,`z^{n  
Tilt X tolerance on surface (degrees) 1 mi&mQQ  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 tB/'3#o  
Change in Focus                :       0.000000                            0.000000 2[QyH'"^E  
Tilt Y tolerance on surface (degrees) 1 NS3qNj  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 FNy-&{P2  
Change in Focus                :       0.000000                            0.000000 U3OX
O1  
Decenter X tolerance on surface 2 dm`:']?  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 <[Y@
<  
Change in Focus                :       0.000000                            0.000000 $_orxu0W  
Decenter Y tolerance on surface 2 WN6%%*w  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 bb}$7v`G  
Change in Focus                :       0.000000                            0.000000 gH<A.5 xy  
Tilt X tolerance on surface (degrees) 2 `Dp_c&9]  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 qtYVX:M@,  
Change in Focus                :       0.000000                            0.000000 yD:}&!\}  
Tilt Y tolerance on surface (degrees) 2 [Zj6v a  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 *h)|Ks  
Change in Focus                :       0.000000                            0.000000 j3&tXZ;F  
Decenter X tolerance on surface 3 }F=lG-x  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 oF {
u  
Change in Focus                :       0.000000                            0.000000 4khc*fh  
Decenter Y tolerance on surface 3 g7@.Fa.u'!  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ay`A Gr  
Change in Focus                :       0.000000                            0.000000 k+;XQEH  
Tilt X tolerance on surface (degrees) 3 gt|:K)[,6  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 MG(qQ#;j/  
Change in Focus                :       0.000000                            0.000000 d*tn&d~k,  
Tilt Y tolerance on surface (degrees) 3 /P koqA,  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Q8?:L<
A  
Change in Focus                :       0.000000                            0.000000 gBd@4{y6C.  
Irregularity of surface 1 in fringes ['JIMcD  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 |Q*OA  
Change in Focus                :       0.000000                            0.000000 * G0I2  
Irregularity of surface 2 in fringes ka?EXF:  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 `Ti?hQm/  
Change in Focus                :       0.000000                            0.000000 Su*f`~G];  
Irregularity of surface 3 in fringes fA" VLQE  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 07#e{   
Change in Focus                :       0.000000                            0.000000 cZl/8?dj}  
Index tolerance on surface 1 ZMGthI}~-  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 y\@INA^  
Change in Focus                :       0.000000                            0.000000 #2*6esP  
Index tolerance on surface 2 H%G|8,4  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Dg'BlrwbR  
Change in Focus                :       0.000000                           -0.000000 Xn #v!  
45U!\mG  
Worst offenders: t~kh?u
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Type                      Value      Criterion        Change W+`T:Mgh  
TSTY   2            -0.20000000     0.35349910    -0.19053324 U
n^3%=;  
TSTY   2             0.20000000     0.35349910    -0.19053324 :`<ME/"YE  
TSTX   2            -0.20000000     0.35349910    -0.19053324 rPUk%S  
TSTX   2             0.20000000     0.35349910    -0.19053324 wS @-EcCB  
TSTY   1            -0.20000000     0.42678383    -0.11724851 :O/QgGZN$  
TSTY   1             0.20000000     0.42678383    -0.11724851 H}PZJf_E  
TSTX   1            -0.20000000     0.42678383    -0.11724851 T))F r:  
TSTX   1             0.20000000     0.42678383    -0.11724851 qj:\)#I  
TSTY   3            -0.20000000     0.42861670    -0.11541563 {jOV8SVL  
TSTY   3             0.20000000     0.42861670    -0.11541563 =BroH\  
..;ep2jSs  
Estimated Performance Changes based upon Root-Sum-Square method: 9six]
T  
Nominal MTF                 :     0.54403234 #iVr @|,  
Estimated change            :    -0.36299231 _0h)O  
Estimated MTF               :     0.18104003 v/[*Pze,C  
Rg\D-F6:  
Compensator Statistics: Y0xn}:%K  
Change in back focus: 0}q
nq"  
Minimum            :        -0.000000 u}eLf'^ZCe  
Maximum            :         0.000000 N-YCOSUu  
Mean               :        -0.000000 -W.bOr  
Standard Deviation :         0.000000 S:{`eDk\A_  
DW>|'w%  
Monte Carlo Analysis: YES-,;ZQ'  
Number of trials: 20 6YF<GF{  
rq![a};~  
Initial Statistics: Normal Distribution 5j>olz=n}  
f?W"^6Df  
  Trial       Criterion        Change
(,;4f7\  
      1     0.42804416    -0.11598818 gtRVXgI  
Change in Focus                :      -0.400171 ykD-
L^}  
      2     0.54384387    -0.00018847 6L,"gF<n  
Change in Focus                :       1.018470 !eA6Ejf  
      3     0.44510003    -0.09893230 Kdr}7#c  
Change in Focus                :      -0.601922 o[
B"J96b  
      4     0.18154684    -0.36248550 a+,zXJQYq  
Change in Focus                :       0.920681 %6cbHH  
      5     0.28665820    -0.25737414 tJ9gwx7Pg  
Change in Focus                :       1.253875 -fT}Nj\  
      6     0.21263372    -0.33139862 X3R:^ff\  
Change in Focus                :      -0.903878 }dpE>  
      7     0.40051424    -0.14351809 eZMfn$McJv  
Change in Focus                :      -1.354815 q$7/X;A  
      8     0.48754161    -0.05649072 FJ{6_=@D  
Change in Focus                :       0.215922 I]6,hygs  
      9     0.40357468    -0.14045766 gVI T6"/  
Change in Focus                :       0.281783 @j'GcN vs  
     10     0.26315315    -0.28087919 (7w95xI  
Change in Focus                :      -1.048393 j5MUP&/g3  
     11     0.26120585    -0.28282649 <|1Khygv  
Change in Focus                :       1.017611 NuR3]Ja\0  
     12     0.24033815    -0.30369419 Z=9gok\  
Change in Focus                :      -0.109292 EqF>=5*  
     13     0.37164046    -0.17239188 `i)Pf WdBN  
Change in Focus                :      -0.692430 lQ!(lPh  
     14     0.48597489    -0.05805744 OPJ(ub  
Change in Focus                :      -0.662040 ?yKG\tPhM  
     15     0.21462327    -0.32940907 xwa@h}\#  
Change in Focus                :       1.611296 `*y%[J,I#  
     16     0.43378226    -0.11025008 x{9$4d  
Change in Focus                :      -0.640081 ,*Wp$  
     17     0.39321881    -0.15081353 /5y _ <  
Change in Focus                :       0.914906 9yWSlbPr]  
     18     0.20692530    -0.33710703 hr`,s!0Y  
Change in Focus                :       0.801607 b]g
#mQ  
     19     0.51374068    -0.03029165 hQwUwfoe@  
Change in Focus                :       0.947293 Q& S 7_  
     20     0.38013374    -0.16389860 8f>v[SQ"  
Change in Focus                :       0.667010 jKb4d9aX  
3hfv^H  
Number of traceable Monte Carlo files generated: 20 BMItHn].  

[BKOK7QK|  
Nominal     0.54403234 K)GpQ|4:<  
Best        0.54384387    Trial     2 aEn*vun  
Worst       0.18154684    Trial     4 5#mHWBGd7  
Mean        0.35770970 *0x!C8*`Xe  
Std Dev     0.11156454 ~T!D:2G  
;jh.\a_\  
G6pR?K+  
Compensator Statistics: ufo\p=pGG  
Change in back focus: \d-9Ndp nf  
Minimum            :        -1.354815 J~)JsAXAI  
Maximum            :         1.611296 =Y*zF>#lP  
Mean               :         0.161872 TecWv@.  
Standard Deviation :         0.869664 xtK}XEhG!  
&n]]OPo  
90% >       0.20977951               TGuCIc0B{  
80% >       0.22748071               L'O=;C"f  
50% >       0.38667627               }c=YiH,o  
20% >       0.46553746               zQoJ8i>  
10% >       0.50064115                /$^SiE+N  
R0e!b+MZ.  
End of Run. )}@Z*.HZL  
)i[K1$x2  
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 X0]Se(  

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  K0Lc~n/  
#g~]2x  
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                 a>S
-50  
80% >       0.22748071                 r@b
a1*y0  
50% >       0.38667627                 j6Au<P  
20% >       0.46553746                 z5W;-sCz  
10% >       0.50064115 |T{ZDJ+  
w[J.?v&^  
最后这个数值是MTF值呢，还是MTF的公差？ 7eG@)5Uy  
Tvw(Sq};  
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？？？   *oAnG:J+M  
._<gc;G  
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  : I^S{V^Ty  
90% >       0.20977951                 RQ[6svfP  
80% >       0.22748071                 D]d2opBLj  
50% >       0.38667627                 ; J8 25CE  
20% >       0.46553746                 /f -\ 3  
10% >       0.50064115 U6oab9C?k  
....... CB?,[#r5f  

j(\jYH>  
i- r y5x  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Fv9n>%W&  
Mode                : Sensitivities {siIRl2&  
Sampling            : 2 t~FOaSt  
Nominal Criterion   : 0.54403234 e5fzV.'5  
Test Wavelength     : 0.6328 n7K\\|X  
XRR`GBI  
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？ .m\'|%  
>D/+04w  
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