| 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？ [ ^t"Hf
一下是我的Prescription Data数据： EB jiSQw
GENERAL LENS DATA: tVQ fR*=
t ]{qizfOB
Surfaces : 3 ~L Gkc
t
Stop : 1 Yf Udpa0
System Aperture : Object Space NA = 0.12 LB %_FT5
Glass Catalogs : Schott o+{}O_r
Ray Aiming : Paraxial Reference, Cache On &3v{~Xg)
X Pupil shift : 0 Nk=F.fp|/
Y Pupil shift : 0 _H^I j
Z Pupil shift : 0 ,pir,Eozg
Apodization : Gaussian, factor = 1.00000E+000 HRi ~ TZ?\
************************************************************* xG0IA 7
Effective Focal Length : 1.639158 (in air at system temperature and pressure) >U~.I2sz
Effective Focal Length : 1.639158 (in image space) m3XL;1y:a
************************************************************* I$0`U;Xd
Back Focal Length : -1.061568 uHBX}WH
Total Track : 4.318 WpC @ nz?
Image Space F/# : 3.417255 qT#+DDEAL
Paraxial Working F/# : 2.950535 |# R;pEn
Working F/# : 2.961912 f]"][!e!,
Image Space NA : 0.1670788 Taxi79cH
Object Space NA : 0.12 A$ %5l
Stop Radius : 0.2398355 m
s\:^a
Paraxial Image Height : 0 evsH>hE^
Paraxial Magnification : 0 ?6Cbx6
Entrance Pupil Diameter : 0.4796709 {y<[1Pms
Entrance Pupil Position : 0 f2[z)j7
Exit Pupil Diameter : 2.511155 |GE3 .g
Exit Pupil Position : 7.420935 PYr#v OH
Field Type : Angle in degrees =O1CxsKt6
Maximum Field : 0 mU:C{<Z
Primary Wave : 1.31 ,HS\(Z
Lens Units : Millimeters !.iu_xJ
Angular Magnification : 0 5 b9_6L6
&q1(v3cOO
Fields : 1 ',8]vWsl
Field Type: Angle in degrees 1JgnuBX"
# X-Value Y-Value Weight /MTS>[E
1 0.000000 0.000000 1.000000 : QSlctW
G,>tC`!
Vignetting Factors l0Jpf9Aue
# VDX VDY VCX VCY VAN f[ GH
1 0.000000 0.000000 0.000000 0.000000 0.000000 _Pa(5-S'KR
R+lKQAyC0=
Wavelengths : 1 +^<CJNDL9
Units: Microns zm2&\8J
# Value Weight )z3mS2
1 1.310000 1.000000 ~CldqXeI
<;#d*&]
CARDINAL POINTS: fMwJwMT8
`y0ZFh1>X
Object space positions are measured with respect to surface 1. /7|u2!#Ui
Image space positions are measured with respect to the image surface. m\U@L+L
The index in both the object space and image space is considered. Ive tQ+
&GwBxJ
Object Space Image Space ?v#t{e0eQ
W = 1.310000 (Primary) _]1dm)%
************************************************************ ^Ot+,l)
Focal Length : -1.639015 1.639015 ;z#D%#Ztq
************************************************************ 0@,,YZ f
Focal Planes : 0.313078 -1.159568 W5$jIQ}Bw
Principal Planes : 1.952094 -2.798584 w |>:mQnU
Anti-Principal Planes : -1.325937 0.479447 $rs7D}VNc
Nodal Planes : 1.952094 -2.798584 1 dz&J\|E#
Anti-Nodal Planes : -1.325937 0.479447 ({Fus@/
b'Z#RIb
我用*号，标出了需要注意的地方，请高手指教！
|
|