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V332X/V332W/V302H Installation Guide
Ceiling Mounted and Desktop
Formulas
The Projection Formulas use the image width for calculation. For proper projection placement, determine the image width
for the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for "W" in
the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2:
Definitions:
W = Image Width
H = Image Height (size)
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)
Projection Formulas:
B = 0.487W
C (wide) = 1.949W
C (tele) = 2.150W
D = 0.112W
α (wide) = tanˉ¹ (B/C(wide))
α (tele) = tanˉ¹ (B/C(tele))
Distance Chart for popular 4:3 screens
Note:
For screen sizes not indicated on the
projection tables, use the formulas on page 1.
www.necdisplay.com
NEC Display Solutions of America, Inc.
4:3 Screen Formulas:
W = H x 4/3
H = W x 3/4
Screen Diagonal = W x 5/4
Screen Size (4:3)
B
Diagonal Width(W) Height (H)
inches
inches
inches
inches
30
24
18
12
40
32
24
16
60
48
36
23
68
54
40.5
26
73
58
43.5
28
84
67
50.25
33
90
72
54
35
100
80
60
39
120
96
72
47
175
140
105
68
180
144
108
70
210
168
126
82
240
192
144
94
V332X/V332W/V302H
D
C
w ide - tele
w ide - tele
inches
inches
degrees
3
47
-
52
14.0 -
4
62
-
69
14.0 -
5
94
-
103
14.0 -
6
105
-
116
14.0 -
6
113
-
125
14.0 -
8
131
-
144
14.0 -
8
140
-
155
14.0 -
9
156
-
172
14.0 -
11
187
-
206
14.0 -
16
273
-
301
14.0 -
16
281
-
310
14.0 -
19
327
-
361
14.0 -
22
374
-
413
14.0 -
Rev 1.0
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Page 2 of 9
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