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Explanation of symbols
O
s
a
Fig. 4: Geometric optics
O Axis point of the object
F object-side focal point
S first vertex
H object-side principal point
A Lens shoulder
s
object-side back focal length
F
f object-side focal length
s
Back focal length of the object-side
H
principal point
s Object distance
a Object distance
H
Distance of the object-side principal point
A
to the flange surface
ω
object-side field angle
max
Note: directional routes are indicated by arrows with an arrowhead.
14
H
S
ω
F
max
s F
f
s H
Version: 1.0
H
'
A
H A
i
s
' '
H
OO
'
O' Axis point of the image
F' image-side focal point
S' last vertex
H' image-side principal point
A
Flange focal length
O'
s '
image-side back focal length
F'
f' image-side focal length
s '
Back focal length of the image-side
H'
principal point
s' Flange focal length
a' Image distance
i Interstitium
OO' Distance of the axis points of object and
image
S
'
A O
'
F
'
s
' '
F
f
'
s
'
a
'
VOS2000-3522
O
'
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