| 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？ U'Vz
一下是我的Prescription Data数据： + O\6p
GENERAL LENS DATA: 3%k@,Vvt
mezP"N=L~
Surfaces : 3 < qv:7@
Stop : 1 5b| _?Em7
System Aperture : Object Space NA = 0.12 "4Anh1,js
Glass Catalogs : Schott +gK7`:v4O*
Ray Aiming : Paraxial Reference, Cache On JnPA; 1@/
X Pupil shift : 0 cl1 4FrpYu
Y Pupil shift : 0 %o*afd
Z Pupil shift : 0 !K6: W1
Apodization : Gaussian, factor = 1.00000E+000 )mp0k%
************************************************************* |p3]9 H
Effective Focal Length : 1.639158 (in air at system temperature and pressure)
"&v?>
Effective Focal Length : 1.639158 (in image space) nD E 5A
************************************************************* 8Ck:c45v
Back Focal Length : -1.061568 zBqr15
Total Track : 4.318 @HaWd 3
Image Space F/# : 3.417255 r ZGA9duy
Paraxial Working F/# : 2.950535 !4-NbtT
Working F/# : 2.961912 PvKe|In(
Image Space NA : 0.1670788 &S c0l/
Object Space NA : 0.12 e|]g ?!
Stop Radius : 0.2398355 iTxn
Paraxial Image Height : 0 eN,m8A`/S
Paraxial Magnification : 0 RI-whA8+
Entrance Pupil Diameter : 0.4796709 2t#9ih"9
Entrance Pupil Position : 0 zg|yW6l)9
Exit Pupil Diameter : 2.511155 \/{qE hP
Exit Pupil Position : 7.420935 574 b]
Field Type : Angle in degrees }]tSWVb*
Maximum Field : 0 NE3G!qxL
Primary Wave : 1.31 `p'L3u5H-
Lens Units : Millimeters oLB pG1Va
Angular Magnification : 0 ZhM-F0;`
k Zf 7
Fields : 1 BOfO$J}
Field Type: Angle in degrees gY;N>Yq,C
# X-Value Y-Value Weight C, jPr )6)
1 0.000000 0.000000 1.000000 <6- (a;T!7
Q; 5aM%a`
Vignetting Factors LOe!qt\&
# VDX VDY VCX VCY VAN `M"b L|[R
1 0.000000 0.000000 0.000000 0.000000 0.000000 L'z?M]
[NaU \;w\
Wavelengths : 1 c( gUH
Units: Microns E39:}_IV
# Value Weight )mwY]
!
1 1.310000 1.000000 rA{h/T"
r_
r+&4n
CARDINAL POINTS: H${Ym BG
uyAhN
Object space positions are measured with respect to surface 1. f{^n<\Jh
Image space positions are measured with respect to the image surface. 0qJ 3@d
The index in both the object space and image space is considered. $+*Zs Io
_ %<7!|"
Object Space Image Space _H:SoJ'
W = 1.310000 (Primary) F-_RL-hbN%
************************************************************ XwlUkw "q
Focal Length : -1.639015 1.639015 HQ2in_'
************************************************************ bFJmXx &
Focal Planes : 0.313078 -1.159568 tk_y~-xz
Principal Planes : 1.952094 -2.798584 .8.ivfmJh
Anti-Principal Planes : -1.325937 0.479447 VVCCPK^<
Nodal Planes : 1.952094 -2.798584 1K wl_jf
Anti-Nodal Planes : -1.325937 0.479447 <J`_Qc8C
V@cRJ3ZF
我用*号，标出了需要注意的地方，请高手指教！
|
|