| qlmi |
2006-08-10 13:34 |
关于Effective focal length的问题
ZEMAX中priscription data会给出系统的许多有用的数据，其中包括effective focal length的数据和主平面位置的数据。但是我发现直接给出的effective focal length数据和根据其定义结合主平面的数据算出来的结果不一致，这时怎么回事？ Qd&j~cG@
一下是我的Prescription Data数据： T7`Jtqf
GENERAL LENS DATA: " fdG5|NJe
tti.-
Surfaces : 3 AyDK-8a
Stop : 1 * 0 @e_h
System Aperture : Object Space NA = 0.12 HO>uS> +
Glass Catalogs : Schott ge|}'QKow
Ray Aiming : Paraxial Reference, Cache On 9^n
]qg^
X Pupil shift : 0 a/1{tDA
Y Pupil shift : 0 d
{4br
Z Pupil shift : 0 (iFhn*/
E
Apodization : Gaussian, factor = 1.00000E+000 qM)^]2_-
************************************************************* -c
tZ9+LL
Effective Focal Length : 1.639158 (in air at system temperature and pressure) !TcjB ;q'
Effective Focal Length : 1.639158 (in image space) ?QgWW
************************************************************* (DU{o\=
Back Focal Length : -1.061568 o fJ@\x S
Total Track : 4.318 J{Jxb1:c
Image Space F/# : 3.417255 WG,{:|!E
Paraxial Working F/# : 2.950535 Yi:+,-Fso
Working F/# : 2.961912 6O }r4*
Image Space NA : 0.1670788 B!Y;VdX
Object Space NA : 0.12 0(n /hJ
Stop Radius : 0.2398355 b3ZPlLx6
Paraxial Image Height : 0 5 1A>eU|
Paraxial Magnification : 0 &^Io\
Entrance Pupil Diameter : 0.4796709 *-7 O|
''
Entrance Pupil Position : 0 Kxq~,g=t
Exit Pupil Diameter : 2.511155 UU_k"D~
Exit Pupil Position : 7.420935 >. A{=?
Field Type : Angle in degrees |<E% hf
Maximum Field : 0 Cpl \ }Qn
Primary Wave : 1.31 *k/_p ^
Lens Units : Millimeters ?Gb
18m
Angular Magnification : 0 #/aWG x_
:mij%nQ>$
Fields : 1
d%<Uh(+:
Field Type: Angle in degrees lp6GiF
# X-Value Y-Value Weight 4H'9y3dk
1 0.000000 0.000000 1.000000 Gh j[nsoC~
cla4%|kq3Y
Vignetting Factors Wl1%BN0>
# VDX VDY VCX VCY VAN v^vEaB
1 0.000000 0.000000 0.000000 0.000000 0.000000 83@+X4ptp
9T\:ID= h
Wavelengths : 1 q
o'1Pknz
Units: Microns T"$"`A"
# Value Weight pJqayz V
1 1.310000 1.000000 m2_B(-
LWY`J0/
CARDINAL POINTS: 2a{ eJ89f
PpbW+}aCF
Object space positions are measured with respect to surface 1. QDU^yVa_
Image space positions are measured with respect to the image surface. rHMsA|xz6
The index in both the object space and image space is considered. BQ m H9g|2
j0Q ;OKu
Object Space Image Space |
#,b1|af
W = 1.310000 (Primary) %f@]-
************************************************************ 9%4rO\q
Focal Length : -1.639015 1.639015 X{)M}WO+r
************************************************************ 46*?hA7@r(
Focal Planes : 0.313078 -1.159568 JV@>d K8
Principal Planes : 1.952094 -2.798584 [Ga 9^e$Zv
Anti-Principal Planes : -1.325937 0.479447 ZI1[jM{4^F
Nodal Planes : 1.952094 -2.798584 $v+g3+7
Anti-Nodal Planes : -1.325937 0.479447 JM oWA0f
~ (}zp<e|
我用*号，标出了需要注意的地方，请高手指教！
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