| 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？ 2]W"sT[
一下是我的Prescription Data数据： }? j>V
GENERAL LENS DATA: C;7?TZ&x w
Y
Y4"r\V
Surfaces : 3 IH|PdVNtg
Stop : 1 <j" }EEb^
System Aperture : Object Space NA = 0.12 'ap<]mf2
Glass Catalogs : Schott z<2!|
Ray Aiming : Paraxial Reference, Cache On Khd "
X Pupil shift : 0 d3D w[4
Y Pupil shift : 0 *PQu9>1w
Z Pupil shift : 0 wBlfQ
w-N
Apodization : Gaussian, factor = 1.00000E+000 cm^:3(yYX
************************************************************* U(#)[S,
Effective Focal Length : 1.639158 (in air at system temperature and pressure) ;4XvlcGo
Effective Focal Length : 1.639158 (in image space) {B^V_T X2
************************************************************* +%vBDcf
Back Focal Length : -1.061568 YNV!(>\GE
Total Track : 4.318 @pq#?
Image Space F/# : 3.417255 Fl{:aq "3
Paraxial Working F/# : 2.950535 x;A"S
Working F/# : 2.961912 ie4keVlXc
Image Space NA : 0.1670788 O 1T JJ8
Object Space NA : 0.12 fh~"A`d
Stop Radius : 0.2398355 .KiJq:$H
Paraxial Image Height : 0 Q(@/ ,%EF
Paraxial Magnification : 0 vd>K=!
J
Entrance Pupil Diameter : 0.4796709 C? p i8Xg
Entrance Pupil Position : 0 c`:hEQs
Exit Pupil Diameter : 2.511155 Wr3j8"f/
Exit Pupil Position : 7.420935 3I!xa*u
Field Type : Angle in degrees jtqH3xfy
Maximum Field : 0 r(sQI#
P
Primary Wave : 1.31 !]c]:ed\C
Lens Units : Millimeters 2kg<O%KA`c
Angular Magnification : 0 \~V
Z Y
/ S
Fields : 1 -dX{ R_*
Field Type: Angle in degrees scmn-4j'{
# X-Value Y-Value Weight ~F5JN ^5Y
1 0.000000 0.000000 1.000000 J6 x#c`Y
dre@V(\;hQ
Vignetting Factors 5~(.:R X:q
# VDX VDY VCX VCY VAN Cj~45)r
1 0.000000 0.000000 0.000000 0.000000 0.000000 \QF \Bh
=+ um:*a.
Wavelengths : 1 ;8WgbR)ZLU
Units: Microns :1 %z;
# Value Weight .Q'/e >0
1 1.310000 1.000000 Y|ON Cc
cd8ZZ 8L
CARDINAL POINTS: JTT"t@__
y!6+jrI
Object space positions are measured with respect to surface 1. ejq2]^O4c
Image space positions are measured with respect to the image surface. bu`8QQ "C
The index in both the object space and image space is considered. eIVCg-l}
]8,:E ]`O
Object Space Image Space L #'N
W = 1.310000 (Primary) e&&;"^@-
************************************************************ jO'+r'2B9
Focal Length : -1.639015 1.639015 [~&C6pR
************************************************************ k< b`v&G
Focal Planes : 0.313078 -1.159568 JQVu&S
Principal Planes : 1.952094 -2.798584 y' sy]Q~
Anti-Principal Planes : -1.325937 0.479447 C N9lK29F)
Nodal Planes : 1.952094 -2.798584 &{ B-a
Anti-Nodal Planes : -1.325937 0.479447 ZLA&<]Ad"$
Y-(),k_Q:
我用*号，标出了需要注意的地方，请高手指教！
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