Acer K137 - Manual (Page 22)

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How to optimize image size and distance
Consult the table below to find the optimal image sizes achievable when the
projector is positioned at a desired distance from the screen. Example: If the
projector is 1.50 m from the screen, good image quality is possible for image
sizes 46.4".
Note: Remind as below figure, the space of 63 cm height is
required when located at 1.50 m distance.
Desired
Distance (m)
<A>
Screen size Top
(Min zoom)
Diagonal (inch)
<B>
W (cm) x H (cm)
From base to top of
image (cm)
<C>
0.97 30.0 65 x 40 40
1.20 37.1 80 x 50 50
1.50 46.4 100 x 63 63
1.75 54.2 117 x 73 73
2.00 61.9 133 x 83 83
2.59 80.0 172 x 108 108
Zoom Ratio: 1.0x
46.4" 46.4" 6.4
A
C
Height:
63 cm
1.50 m
Desired Distance
Screen
size