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？ VX$WL"A
一下是我的Prescription Data数据： E7MSoBX9M
GENERAL LENS DATA: r\;fyeH
AzOs/q8O
Surfaces : 3 V]p{j LG
Stop : 1 fgdR:@]-
System Aperture : Object Space NA = 0.12 h= sNj
Glass Catalogs : Schott E&P2E3P
Ray Aiming : Paraxial Reference, Cache On Oo|PZ_P
X Pupil shift : 0 5.9<g>C
Y Pupil shift : 0 Mqr_w !8d
Z Pupil shift : 0 u
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Apodization : Gaussian, factor = 1.00000E+000 "0An'7'm
************************************************************* Wb-C0^dTn
Effective Focal Length : 1.639158 (in air at system temperature and pressure) s E pI)9
Effective Focal Length : 1.639158 (in image space) }4A] x`3
************************************************************* RRIh;HhX
Back Focal Length : -1.061568 < (xqw<)
Total Track : 4.318 0ra'H/>Ly
Image Space F/# : 3.417255 <e2l@@#oy
Paraxial Working F/# : 2.950535 _p-e)J$7
Working F/# : 2.961912 r=H?fTY<3E
Image Space NA : 0.1670788 1[!v{F%]
Object Space NA : 0.12 @AEH?gO X
Stop Radius : 0.2398355 aOwjYl[?p
Paraxial Image Height : 0 vk92j?
Paraxial Magnification : 0 6O7s^d&K
Entrance Pupil Diameter : 0.4796709 5 #K*75>
Entrance Pupil Position : 0 C`[<6>&y
Exit Pupil Diameter : 2.511155 8=`L#FkRp
Exit Pupil Position : 7.420935 p 0Jr{hM
Field Type : Angle in degrees Q/+`9z+c
Maximum Field : 0 Jb QK$[z"
Primary Wave : 1.31 8s1nE_3
Lens Units : Millimeters v'W{+>.
Angular Magnification : 0 C^J<qq &
Jka>Er
Fields : 1 SYCL\b
Field Type: Angle in degrees V?uT5.B2
# X-Value Y-Value Weight O3} JOv_
1 0.000000 0.000000 1.000000 (pxH<k=Ah
>'*%wf[{
Vignetting Factors PI9,*rOy
# VDX VDY VCX VCY VAN 3uLG$`N
1 0.000000 0.000000 0.000000 0.000000 0.000000 'C1lP)S5
$UR:j8C{p$
Wavelengths : 1 mmTpF]t
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Units: Microns $DY#04Je\=
# Value Weight - S'K xC
1 1.310000 1.000000 gP2zDI
M@Th^yF+8H
CARDINAL POINTS: 1BSd9Ydj
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Object space positions are measured with respect to surface 1. @Zt~b'n
Image space positions are measured with respect to the image surface. Q{l,4P
The index in both the object space and image space is considered. M3t l4%j
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Object Space Image Space uvId],dQ5
W = 1.310000 (Primary) DrJ?bG;[
************************************************************ K: ,V>DL
Focal Length : -1.639015 1.639015 (` *BZ _
************************************************************ \|HEe{nA
Focal Planes : 0.313078 -1.159568 m\ &| #yq
Principal Planes : 1.952094 -2.798584 jI ol`WX
Anti-Principal Planes : -1.325937 0.479447 R#T-o,m
Nodal Planes : 1.952094 -2.798584 S!(3- {nC
Anti-Nodal Planes : -1.325937 0.479447 TSB2]uH
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我用*号，标出了需要注意的地方，请高手指教！
