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.
Ceiling Mounted
Throw Distance
Screen Top
B
α
Lens Offset from
Mount Pipe
Screen Ctr
C
* lens set back inside shroud 0.4" from front of cabinet
/ Lens Ctr*
4.4"
2.9"
4.4"
Desktop
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C
Throw Distance
B
Screen Ctr
3.1"
α
* lens set back inside shroud 0.4" from front of cabinet
Screen Bottom
/ Lens Ctr*
Note: To avoid premature lamp failure, do not tilt the front of the projector up or down by more than 75° from level. Tilting the front of the
projector up or down from 15° to 75° might reduce lamp life by up to 25%.
Distance chart for popular 4:3 screens
B
Diag
W
H
wide - tele
wide - tele
inches
inches
inches
inches
40
32
24
12.0
82.0 - 131.8
8.3 - 5.2
60
48
36
18.0
125.6 - 200.4
8.2 - 5.1
72
57.6
43.2
21.6
151.8 - 241.5
8.1 - 5.1
84
67.2
50.4
25.2
177.9 - 282.7
8.1 - 5.1
90
72
54
27.0
191.0 - 303.3
8.0 - 5.1
100
80
60
30.0
212.8 - 337.6
8.0 - 5.1
120
96
72
36.0
256.5 - 406.1
8.0 - 5.1
150
120
90
45.0
321.9 - 509.0
8.0 - 5.1
180
144
108
54.0
387.3 - 611.9
7.9 - 5.0
200
160
120
60.0
430.9 - 680.5
7.9 - 5.0
250
200
150
75.0
540.0 - 851.9
7.9 - 5.0
300
240
180
90.0
649.1 - 1023.4
7.9 - 5.0
350
280
210
105.0
758.1 - NA
7.9 - NA
400
320
240
120.0
867.2 - NA
7.9 - NA
450
360
270
135.0
976.2 - NA
7.9 - NA
500
400
300
150.0
1085.3 - NA
7.9 - NA
Screen Size (4:3)
C
inches
α
degrees
Note: For screen sizes not indicated on the chart,
use the formulas on page 1.
Note: “NA” means it is outside the lens range for
that part of the zoom. Refer to “Screen Sizes” in
Lens Specifications on Page 1.
