| 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？ 4I9Yr
一下是我的Prescription Data数据： (*kKfg4Wj
GENERAL LENS DATA: -hq^' ;,
uw/N `u
Surfaces : 3 `KZu/r-M9
Stop : 1 B6@q`Bmw.
System Aperture : Object Space NA = 0.12 !MVf(y$
Glass Catalogs : Schott gjx-tp 1.
Ray Aiming : Paraxial Reference, Cache On hhz#I A6,
X Pupil shift : 0 ky&wv+7
Y Pupil shift : 0 x4h.WDT$
Z Pupil shift : 0 zG{jRth
Apodization : Gaussian, factor = 1.00000E+000 @6Lp $w
************************************************************* xm5?C>vu(
Effective Focal Length : 1.639158 (in air at system temperature and pressure) {jv+ J L"5
Effective Focal Length : 1.639158 (in image space) =oM#]M'G+(
************************************************************* WX]O1Y
Back Focal Length : -1.061568 _BONN6=*y
Total Track : 4.318 (BngwLVDK
Image Space F/# : 3.417255 IVy< >xpt
Paraxial Working F/# : 2.950535 s}-j.jzB{
Working F/# : 2.961912 VLVDi >0i
Image Space NA : 0.1670788 MPK rr
Object Space NA : 0.12 It<VjN9
Stop Radius : 0.2398355 0FLCN!i1
Paraxial Image Height : 0 @eDs)mY
Paraxial Magnification : 0 lr[T+nQ
Entrance Pupil Diameter : 0.4796709 fwmXIpteK
Entrance Pupil Position : 0
?!<Q8=
Exit Pupil Diameter : 2.511155 -ssmj8:Q\|
Exit Pupil Position : 7.420935 [-i&)eX
Field Type : Angle in degrees )Gk?x$pY@
Maximum Field : 0 ,F*HZBNFZ
Primary Wave : 1.31 j9yOkaVEg
Lens Units : Millimeters m U
Angular Magnification : 0 >ts}\.(]
oRJ!TAbD
Fields : 1 Pt cq/f
Field Type: Angle in degrees sCP|d` '
# X-Value Y-Value Weight 54B`T/>R:E
1 0.000000 0.000000 1.000000 4q:8<*W=
Jt #HbAY
Vignetting Factors TvS<;0~K
# VDX VDY VCX VCY VAN +'+ Nr<
1 0.000000 0.000000 0.000000 0.000000 0.000000 CBNt
_y
G Y.iCu b
Wavelengths : 1 ]N ;n q
Units: Microns 'U*#7 1S
# Value Weight x %9Ca)r?}
1 1.310000 1.000000 ` AD} 6O+x
{:b~^yW
CARDINAL POINTS: /Oi(5?Jn
Ke3~o"IQ
Object space positions are measured with respect to surface 1. mP/#hwzB&q
Image space positions are measured with respect to the image surface. PIXqd,
The index in both the object space and image space is considered. zg@i7 T
m @lU JY
Object Space Image Space <L11s%5-
W = 1.310000 (Primary) B/qN1D]U.
************************************************************ =
Ezg3$%-
Focal Length : -1.639015 1.639015 |(2#KMEWa
************************************************************ MM* ~X"A
Focal Planes : 0.313078 -1.159568 W}"tf
L8
Principal Planes : 1.952094 -2.798584 r NKeY48 \
Anti-Principal Planes : -1.325937 0.479447 h oM%|,0
Nodal Planes : 1.952094 -2.798584 /OB) \{-
Anti-Nodal Planes : -1.325937 0.479447 r%WHYhD
9;uH}j8sE
我用*号，标出了需要注意的地方，请高手指教！
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