NEC LT265 Istruzione Sull'Installazione
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LT265
Page 2 of 7
Diagrams and Distance Charts for 4:3 Screens
The following diagrams show the relationship between projector position and the screen. Refer to the chart below for data.
Distances are in inches. For millimeters multiply by 25.4.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling
Mounted
Desktop
Distance chart for popular 4:3 screens
Note: For screen sizes not indicated on the chart,
use the formulas on page 1.
Screen Top
Throw Distance
Screen Ctr
D
Lens offset from
mount center
mount center
α
5.8"
Lens Ctr
B
2.5"
6.5"
C
Screen Bottom
Throw Distance
Screen Ctr
D
α
Lens Ctr
B
C
3.3"
B
D
Diag
W
H
wide - tele
wide - tele
inches
inches
inches
inches
inches
30
24
18
12.6
45.6 - 56.0
3.6
15.4 - 12.7
60
48
36
25.2
93.5 - 114.1
7.2
15.1 - 12.4
72
57.6
43.2
30.2
112.7 - 137.4
8.6
15.0 - 12.4
84
67.2
50.4
35.3
131.9 - 160.6
10.1
15.0 - 12.4
90
72
54
37.8
141.5 - 172.2
10.8
15.0 - 12.4
100
80
60
42.0
157.4 - 191.6
12.0
14.9 - 12.4
120
96
72
50.4
189.4 - 230.3
14.4
14.9 - 12.3
150
120
90
63.0
237.3 - 288.4
18.0
14.9 - 12.3
180
144
108
75.6
285.3 - 346.6
21.6
14.8 - 12.3
200
160
120
84.0
317.2 - 385.3
24.0
14.8 - 12.3
250
200
150
105.1
397.1 - 482.1
30.1
14.8 - 12.3
300
240
180
126.1
477.1 - 579.0
36.1
14.8 - 12.3
350
280
210
147.1
557.0 - 675.8
42.1
14.8 - 12.3
400
320
240
168.1
636.9 - 772.7
48.1
14.8 - 12.3
450
360
270
189.1
716.8 - 869.5
54.1
14.8 - 12.3
500
400
300
210.1
796.7 - 966.4
60.1
14.8 - 12.3
Screen Size (4:3)
C
inches
α
degrees