NEC Display Solutions of America, Inc.
V332X/V332W/V302H Installation Guide
Ceiling Mounted and Desktop
Rev 1.0
www.necdisplay.com
V332X/V332W/V302H
Page 4 of 9
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:
16:9 Screen Formulas:
W = Image Width
W = H x 16/9
H = Image Height (size)
H = W x 9/16
B = Vertical distance between lens center and screen center
Screen Diagonal = W x 18.358/16
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)
Projection Formulas:
B
= 0.374W
C
(wide) = 1.499W
C
(tele)
= 1.800W
D
= 0.092W
α
(wide) = tanˉ¹ (B/C(wide))
α
(tele) = tanˉ¹ (B/C(tele))
Distance Chart for popular 16:9 screens
Note:
For screen sizes not indicated on the
projection tables, use the formulas on page 1.
Diagonal Width(W) Height (H)
inches
inches
inches
inches
61
53
30
20
80
-
96
14.0 -
11.7
71
62
35
23
93
- 112
14.0 -
11.7
73
64
36
24
96
- 115
14.0 -
11.7
82
71
40
27
107
- 128
14.0 -
11.7
86
75
42
28
112
- 134
14.0 -
11.7
92
80
45
30
120
- 144
14.0 -
11.7
100
87
49
33
131
- 157
14.0 -
11.7
106
92
52
35
139
- 166
14.0 -
11.7
110
96
54
36
144
- 173
14.0 -
11.7
120
105
59
39
157
- 189
14.0 -
11.7
122
107
60
40
160
- 192
14.0 -
11.7
133
116
65
43
173
- 208
14.0 -
11.7
135
117
66
44
176
- 211
14.0 -
11.7
159
139
78
52
208
- 250
14.0 -
11.7
161
140
79
53
211
- 253
14.0 -
11.7
230
201
113
75
301
- 362
14.0 -
11.7
275
240
135
90
360
- 432
14.0 -
11.7
300
261
147
98
392
- 470
14.0 -
11.7
24
Screen Size (16:9)
5
inches
B
C
w ide - tele
inches
13
degrees
D
α
w ide - tele
6
6
7
7
7
8
9
9
13
18
22
10
10
11
11
