Panasonic PT-LB78, Specifications

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-30°
+30°
0°
S
P E C
F
I L E
PT- LB78
Portable LCD Projector
As of March 2009 < 4 >
Standard setting-up positions
Projected image
Lower edge of projected image
Upper edge of projected image
L
L
L
Projected image
H
H
W
ø49
70 (2-3/4˝)
ø43
(1-15/16˝)
(1-11/16˝)
117
(4-19/32˝)
357–437
(14-1/16˝–
17-7/32˝)
Adju
s
table
in 20-mm
(15/32-inch)
s
tep.
65 (2-9/16˝)
81 (3-3/16˝)
unit : mm (inch)
NOTE:
Illustrations show the projector installed
using optional ceiling bracket.
This illustration is not drawn to scale.
L: Distance to screen
H: Height from the edge of screen to
center of lens
* This distance is especially recommend-
ed for ceiling-mounted use and other
permanent installations.
NOTE:
Values shown are approximate.
The value for L (distance to screen)
varies slightly depending on the zoom
lens characteristics.
When the shortest projection distance is
used, a small amount of distortion may
occur in the image due to the zoom lens
characteristics.
0.84 m
1.02 m
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
3.05 m
3.81 m
5.08 m
6.35 m
7.62 m
–
1.1 m
1.4 m
1.7 m
2.0 m
2.3 m
2.6 m
2.9 m
3.5 m
4.3 m
5.8 m
7.3 m
8.7 m
1.1 m
1.4 m
1.7 m
2.1 m
2.4 m
2.8 m
3.1 m
3.5 m
4.2 m
5.2 m
7.0 m
8.7 m
10.5 m
0.08 m
0.10 m
0.13 m
0.15 m
0.18 m
0.20 m
0.23 m
0.25 m
0.30 m
0.38 m
0.51 m
0.64 m
0.76 m
33˝
40˝
50˝
60˝
70˝
80˝
90˝
100˝
120˝
150˝
200˝
250˝
300˝
–
3.7´
4.7´
5.6´
6.6´
7.6´
8.5´
9.5´
11.4´
14.3´
19.0´
23.8´
28.6´
3.7´
4.5´
5.6´
6.8´
7.9´
9.1´
10.2´
11.4´
13.7´
17.1´
22.9´
28.7´
34.4´
0.28´
0.33´
0.42´
0.50´
0.58´
0.67´
0.75´
0.83´
1.00´
1.25´
1.67´
2.08´
2.50´
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Projection size
(diagonal)
Height from the edge of screen
to centre of lens (H)
Projection distance (L)
Min (wide) Max (telephoto)
Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
Aspect ratio 4 : 3
minimum
L (m) = (diagonal screen size in inches) x 0.0292 – 0.036
maximum L (m) = (diagonal screen size in inches) x 0.0351 – 0.044
NOTE: Distances calculated with the above equations will include a slight error.
Installable Angle
Install the projector at an angle within the range shown below.
• Vertical direction
The projector
may be installed
at a vertical
angle of ±30°.
• Vertical direction
The projector may not be angled horizontally.