23
On a horizontal surface
Mounted on the wall or ceiling
F-1
F-2
Screen size
(diagonal)
Projection distance
Screen height
b1
b2
c1
c2
type(inch)
m
m
inch
m
inch
m
inch
m
inch
60
1.5 0.128
5.0
0.409
16.1
0.313
12.3
1.121
44.1
70
1.8 0.198
7.8
0.479
18.9
0.351
13.8
1.293
50.9
80
2.0 0.268
10.5
0.549
21.6
0.388
15.3
1.465
57.7
90
2.3 0.338
13.3
0.619
24.4
0.426
16.8
1.638
64.5
100
2.5 0.408
16.1
0.689
27.1
0.464
18.3
1.810
71.3
T-1
8137W
a
(1280 x 800) (±8%)
a
c2
c1
b1
b2
a
c2
c1
b1
b2
