Stage Projector
BP 4 CT
Pani Projection and Lighting Vertriebs GmbH
17
9) Projection Diagram
for O= 17cm
calculating formulas
F ... focal length of projection lens
B ... width of the image
D ... projection distance (measured from the middle of the objective lens)
O ... object size (i.e. the used slide format)
used slide format (O)=
17cm for glass slides
15,5cm for filmholder
11c
m
13,
5cm
18
cm
22
cm
25
cm
27
cm
33
cm
40
cm
50
cm
6
0
cm
80
cm
1
2
5
cm
p
ro
je
c
ti
o
n
d
is
ta
n
c
e
M
E
T
E
R
1
0
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
width of projection
METER
30
25
20
15
10
5
fo
c
a
l
le
n
g
th
F
