Installation, Adjusting the projector’s zoom / focus, Adjusting projection image size – Optoma Home Theatre Projector User Manual
Page 26: Side view front view, Focus ring zoom lever
Installation
24
L
H
'
H
(1
92
0X
10
80
)
A
B
(1920X1080)
W
0
(1920X1080)
W
1
(1440X1080)
D
(1920X1080)
Focus Ring
Zoom Lever
Adjusting the Projector’s Zoom / Focus
Turn the Zoom Lever to zoom in or zoom out. To focus the
image, turn the focus ring until you see a clear image. The
projector will focus at distances from 4.9 to 39.4 feet (1.5 to 12.0
meters) and the projection screen size from 0.775m~ 7.62m
(30.5”~300”) at 16:9 mode with mechanical travel.
Adjusting Projection Image Size
Side View
Front View
Throw Ratio (TR)=1.85 as Wide mode
A=6.25°
B
(1920x1080)=22.47°
W
0
(1920x1080)=L/TR
H'=L X tan(A)
W
1
(1440x1080)=W
0
(1920x1080) X 0.75
H (1920x1080)=W
0
(1920x1080) X 0.56
H (1440x1080)=W
1
(1440x1080) X 0.75
Display Format
A
B
L
(cm)
W
(cm)
H
(cm)
H’
(cm)
D
(cm)
D’
(in)
16:9 (1920x1080)
6.25
22.47
245.73
132.83
74.72
26.90
152.40
60.00
4:3 (1440x1080)
6.25
22.47
245.73
99.62
74.72
26.90
124.53
49.03
Projection Distance (M)
2.0
2.5
3.0
3.5
4.0
5.0
6.0
Screen Size 16:9
(inch)
Max
48.8
61.0
73.3
85.5
97.7
122.1
146.5
Min
40.7
50.9
61.0
71.2
81.4
101.7
122.1
Screen Size 4:3
(inch)
Max
39.9
49.9
59.9
69.8
79.8
99.8
119.7
Min
33.3
41.6
49.9
58.2
66.5
83.1
99.8
Installation