Projection Distances - Panasonic PT-L780NTE Operating Instructions Manual

Projection distances

Screen size (4:3)
Diagonal Height
length (SH)
1.01 m(40˝) 0.61 m(2´)
1.27 m(50˝) 0.76 m(2´6˝)
1.52 m(60˝) 0.91 m(3´)
1.77 m(70˝) 1.07 m(3´6˝)
2.03 m(80˝) 1.22 m(4´)
2.28 m(90˝) 1.37 m(4´6˝)
2.54 m(100˝) 1.52 m(5´)
3.81 m(150˝) 2.29 m(7´6˝)
5.08 m(200˝) 3.05 m(10´)
6.35 m(250˝) 3.81 m(12´6˝) 5.08 m(16´8˝) 10.1 m(33´1˝)
7.62 m(300˝) 4.57 m(15´)
Setting-up dimensions which are not given in the above table can be
calculated using the formulas below.
If the screen size (diagonal) is SD (m), then the following formula is used to
calculate the projection distance for the wide lens position (LW) and the
projection distance for the telephoto lens position (LT).
LW=0.0407xSD/0.0254-0.080
LT=0.0538xSD/0.0254-0.0774
For 16:9 aspect ratios, the following formula can be used to calculate the
projection distance.
LW=0.0443xSD/0.0254-0.080
LT=0.0586xSD/0.0254-0.0774
NOTE:
B The dimensions in the table above and the values obtained from the
above formulas may contain slight errors.
B If you use the projection distance for the 16:9 screen, the
4:3 projection image overflows the screen at the top and
bottom.
B If you set up the projector vertically, it may cause to
damage the projector.
B It is recommended that you set up the projector in
a place that is tilted at less than ±35° . Setting up
the projector in places that are tilted at more than
±35° may cause malfunctions.
Make sure that enough space is kept for the air
outlet port.
Projection distance (L)
Width Wide
(SW) (LW)
0.81 m(2´8˝) 1.6 m(5´2˝)
1.02 m(3´4˝) 2.0 m(6´6˝)
1.22 m(4´) 2.4 m(7´10˝)
1.42 m(4´8˝) 2.8 m(9´2˝)
1.63 m(5´4˝) 3.2 m(10´5˝)
1.83 m(6´) 3.6 m(11´9˝)
2.03 m(6´8˝) 4.0 m(13´1˝)
3.05 m(10´) 6.1 m(20´)
4.06 m(13´4˝) 8.1 m(26´6˝)
6.10 m(20´) 12.2 m(40´)
Telephoto
(LT)
2.0 m(6´6˝)
2.6 m(8´6˝)
3.1 m(10´2˝)
3.6 m(11´9˝)
4.2 m(13´9˝)
4.7 m(15´5˝)
5.3 m(17´4˝)
7.9 m(25´11˝)
10.6 m(34´9˝)
13.3 m(43´7˝)
16.0 m(52´5˝)
E
NGLISH
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