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？ 6kdcFcV-]
一下是我的Prescription Data数据： \ Z$MH`_nu
GENERAL LENS DATA: Z6_ fI
M+Eg{^ q`
Surfaces : 3 q82yh&
Stop : 1 '%KaAi$
System Aperture : Object Space NA = 0.12 @P6*4W
Glass Catalogs : Schott M Jtn)gXb
Ray Aiming : Paraxial Reference, Cache On mC ./,a[
X Pupil shift : 0 Io]KlR@!T
Y Pupil shift : 0 mxmj
Z Pupil shift : 0 [ Ru ( H
Apodization : Gaussian, factor = 1.00000E+000 NJPp6RZ%
************************************************************* k:*vD"
Effective Focal Length : 1.639158 (in air at system temperature and pressure) ]w~ECP(ap
Effective Focal Length : 1.639158 (in image space) eOs 4c`
************************************************************* v6O5n(5,,
Back Focal Length : -1.061568 l#rr--];
Total Track : 4.318 `W'S'?$
Image Space F/# : 3.417255 _TjRvILC
Paraxial Working F/# : 2.950535 T!QAc O
Working F/# : 2.961912 ,*g.?q@W2
Image Space NA : 0.1670788 0EBHR Y_F
Object Space NA : 0.12 :;N2hnHoG
Stop Radius : 0.2398355 j&"GE ':Y
Paraxial Image Height : 0 =iE)vY,?"}
Paraxial Magnification : 0 f- ~]
Entrance Pupil Diameter : 0.4796709 .*nr3dY
Entrance Pupil Position : 0 "hLm wz|a
Exit Pupil Diameter : 2.511155 UaM&/K9
Exit Pupil Position : 7.420935 |!uC [=
Field Type : Angle in degrees 2R~[B]2"r
Maximum Field : 0 +p0Y*.
Primary Wave : 1.31 =$WDB=i
Lens Units : Millimeters /R[P sB
Angular Magnification : 0 7nk3^$|
x(y=.4Y f+
Fields : 1 ( ?kCo
Field Type: Angle in degrees 5~=wia
# X-Value Y-Value Weight #s|,o Im
1 0.000000 0.000000 1.000000 ?EA&kZR]
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A
Vignetting Factors z i3gE$7
# VDX VDY VCX VCY VAN la 89> pF
1 0.000000 0.000000 0.000000 0.000000 0.000000 15"[MX A
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Wavelengths : 1 %DuSco"
Units: Microns qHC/)M#L
# Value Weight GW!%DT
1 1.310000 1.000000 Pt?d+ aBtV
ts ;C:.X
CARDINAL POINTS: ~uh,R-Q$
1JF>0ijU@
Object space positions are measured with respect to surface 1. |k= 5`WG
Image space positions are measured with respect to the image surface. L?r\J8Ch<
The index in both the object space and image space is considered. J9XV:)Yv#
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Object Space Image Space fx = %e
W = 1.310000 (Primary) r l XMrn
************************************************************ tz_WxOQ0
Focal Length : -1.639015 1.639015 =xRxr @
************************************************************ E9:p A5H-j
Focal Planes : 0.313078 -1.159568 ;#S4$wISw`
Principal Planes : 1.952094 -2.798584 bVY sPS
Anti-Principal Planes : -1.325937 0.479447 n /Dk~Q)
Nodal Planes : 1.952094 -2.798584 vff`Xh>k (
Anti-Nodal Planes : -1.325937 0.479447 77~l~EX
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我用*号，标出了需要注意的地方，请高手指教！
