| 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？ ]Z$TzT&@%
一下是我的Prescription Data数据： N?=qEX|R
GENERAL LENS DATA: XAU_SPAjiw
eN| HJ=
Surfaces : 3 b1+hr(kMRM
Stop : 1 6}i&6@Snq?
System Aperture : Object Space NA = 0.12 uH
ny ]
Glass Catalogs : Schott I`"-$99|t1
Ray Aiming : Paraxial Reference, Cache On <nw <v9Z
X Pupil shift : 0 Q@e*$<3
Y Pupil shift : 0 *qO ]v9 j
Z Pupil shift : 0 o,CA; _
Apodization : Gaussian, factor = 1.00000E+000 | z #m
************************************************************* GcZM+ c
Effective Focal Length : 1.639158 (in air at system temperature and pressure) 8_<&f%/
Effective Focal Length : 1.639158 (in image space) 8!uL-_ Bn
************************************************************* ^Cc8F3os=
Back Focal Length : -1.061568 zJfK4o
Total Track : 4.318 Esz1uty
Image Space F/# : 3.417255 L_Y9+
e
Paraxial Working F/# : 2.950535 49xp2{
Working F/# : 2.961912 ~tg1N^]kV
Image Space NA : 0.1670788 CQBT::
Object Space NA : 0.12 ZTh? ^}/
Stop Radius : 0.2398355 -}_cO|kk
Paraxial Image Height : 0 o <D3Y95b
Paraxial Magnification : 0 VBbUl|X\
Entrance Pupil Diameter : 0.4796709 h9<mThvgn
Entrance Pupil Position : 0 %\X P:
Exit Pupil Diameter : 2.511155 y$j1?7
Exit Pupil Position : 7.420935 W$ JY M3!
Field Type : Angle in degrees Z]x 5!
Maximum Field : 0 !B [1zE
Primary Wave : 1.31 C!ZI&cD9
Lens Units : Millimeters qeQC&U
y;
Angular Magnification : 0 IOsXPf9@
/'Qu u)~
Fields : 1
rV8(ia
Field Type: Angle in degrees y3={NB+
# X-Value Y-Value Weight k_*XJ <S!Y
1 0.000000 0.000000 1.000000 j<l#qho{h
/,1SE(
Vignetting Factors }.fL$,7a
# VDX VDY VCX VCY VAN _l#3]#
1 0.000000 0.000000 0.000000 0.000000 0.000000 | `_ < @b
kf+JM /
Wavelengths : 1
&7L~PZ
Units: Microns $:f.Kr j
# Value Weight zQL!(2
1 1.310000 1.000000 y\F`B0#$
Po Yr:=S?
CARDINAL POINTS: =w',-+@
S}zC3
Object space positions are measured with respect to surface 1. f![xn2T
Image space positions are measured with respect to the image surface. gq
H`GI
The index in both the object space and image space is considered. Hi]vH G(
%'{V%IXQ
Object Space Image Space I$aXnd6)
W = 1.310000 (Primary) #'J~Xk
************************************************************ 5h|'DO x|o
Focal Length : -1.639015 1.639015 -;+m%"k5
************************************************************ &q4ox7 1
Focal Planes : 0.313078 -1.159568 DapQ}2'_
Principal Planes : 1.952094 -2.798584 ky'|Wk6
Anti-Principal Planes : -1.325937 0.479447 W.yV/fu
Nodal Planes : 1.952094 -2.798584 R&NpdW N
Anti-Nodal Planes : -1.325937 0.479447 r@|R-Binz
H,(F1+~d
我用*号，标出了需要注意的地方，请高手指教！
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