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？ o`,|{ K$H
一下是我的Prescription Data数据： 9$U@h7|Q`
GENERAL LENS DATA: bk^W]<:z`
D+.<
kY.
Surfaces : 3 7L)edR [
Stop : 1 _$g6Mj]1z
System Aperture : Object Space NA = 0.12 uy Z
Glass Catalogs : Schott T%zCAfx m
Ray Aiming : Paraxial Reference, Cache On O<}3\O )G(
X Pupil shift : 0 s F-{ (
Y Pupil shift : 0 wiHGTaR
Z Pupil shift : 0 _sLSl; /t
Apodization : Gaussian, factor = 1.00000E+000 nIc:<w]
************************************************************* 7m='-_w)?w
Effective Focal Length : 1.639158 (in air at system temperature and pressure) "u^%~ 2
Effective Focal Length : 1.639158 (in image space) n wSuj D
************************************************************* NEp
)V'
Back Focal Length : -1.061568 su:~X d
Total Track : 4.318 ]:H((rk
Image Space F/# : 3.417255 ^K[WFi N}
Paraxial Working F/# : 2.950535 _7e ^
t N
Working F/# : 2.961912 B"KDr_,,
Image Space NA : 0.1670788 f 0 "N
Object Space NA : 0.12 t 3LRmj L
Stop Radius : 0.2398355 N!me:|Dn
Paraxial Image Height : 0 Qg9*mlm`
Paraxial Magnification : 0 o9GtS$ O\
Entrance Pupil Diameter : 0.4796709 )\K ;Ncp[
Entrance Pupil Position : 0 PH!^w w6
Exit Pupil Diameter : 2.511155 a*
2*aH7
Exit Pupil Position : 7.420935 <=O/_Iu(
Field Type : Angle in degrees i*ibx;s-
Maximum Field : 0 [k<"@[8)
Primary Wave : 1.31 4 H
4W
Lens Units : Millimeters pX 4 :WV
Angular Magnification : 0 s0D ,n1x
pp YIVI
Fields : 1 "p Rr>F a
Field Type: Angle in degrees WC 0 gJy
# X-Value Y-Value Weight X1 wlOE
1 0.000000 0.000000 1.000000 1VXyn \
%5 [,U )X"
Vignetting Factors Aho zrroV
# VDX VDY VCX VCY VAN NCu:E{([
1 0.000000 0.000000 0.000000 0.000000 0.000000 X6h@K</c^:
@'5*u~M
Wavelengths : 1 O8\ > ?4)
Units: Microns 3P}^Wu
# Value Weight 2D'b7zPJ3
1 1.310000 1.000000 HLL:nczj
}^b7x;O|
CARDINAL POINTS: W'98ue s%
'
\8|`Zb
Object space positions are measured with respect to surface 1. 76'@}wNnw
Image space positions are measured with respect to the image surface. s8O.yL
The index in both the object space and image space is considered. E: 7R>. g
PQ0l <]Y
Object Space Image Space LvM;ZfA Ev
W = 1.310000 (Primary) }Cs. Hm0P
************************************************************ 5u:{lcC.X
Focal Length : -1.639015 1.639015 N'5AU (
************************************************************ a ](Jc)
Focal Planes : 0.313078 -1.159568 I3 8j[Xk
Principal Planes : 1.952094 -2.798584 {?+dVLa^;
Anti-Principal Planes : -1.325937 0.479447 3QZ~t#,7ij
Nodal Planes : 1.952094 -2.798584 jIvSjlm I
Anti-Nodal Planes : -1.325937 0.479447 { p90
sJ3O ]
我用*号，标出了需要注意的地方，请高手指教！
