Nec V300W [2/8] V260 v260x v300x v300w installation guide
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Nec V300W [2/8] V260 v260x v300x v300w installation guide

Nec V300W [2/8] V260 v260x v300x v300w installation guide
NEC Display Solutions of America, Inc.
V260/V260X/V300X/V300W Installation Guide
Ceiling Mounted and Desktop Rev 1.0
www.necdisplay.com V260/V260X/ V300X/V300W Page 2 of 8
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: 4:3 Screen Formulas:
W = Image Width W = H x 4/3
H = Image Height (size) H = W x 3/4
B = Vertical distance between lens center and screen center Screen Diagonal = W x 5/4
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)
Projection Formulas:
B = 0.487W
C (wide) = 1.94W
C (tele) = 2.165W
D = 0.112W
α (wide) = tan¯¹ (B/C(wide))
α (tele) = tan¯¹ (B/C(tele))
Distance Chart for popular 4:3 screens
Diagonal Width(W) Height (H)
inches inches inches inches
30 24 18 12 46 - 52 14.1 - 12.7
60 48 36 23 93 - 104 14.1 - 12.7
67 53.6 40.2 26 104 - 116 14.1 - 12.7
72 57.6 43.2 28 111 - 125 14.1 - 12.7
84 67.2 50.4 33 130 - 146 14.1 - 12.7
90 72 54 35 139 - 156 14.1 - 12.7
100 80 60 39 155 - 173 14.1 - 12.7
120 96 72 47 186 - 208 14.1 - 12.7
150 120 90 58 232 - 260 14.1 - 12.7
180 144 108 70 279 - 312 14.1 - 12.7
210 168 126 82 325 - 364 14.1 - 12.7
240 192 144 94 372 - 416 14.1 - 12.7
270 216 162 105 418 - 468 14.1 - 12.7
300 240 180 117 465 - 520 14.1 - 12.7
19
22
24
27
9
11
13
16
6
6
8
8
D
α
w ide - tele
d
egrees
Screen Size (4:3)
5
i
nc
h
es
3
B
C
w ide - tele
i
nc
h
es
Note:
For screen sizes not indicated on the
projection tables, use the formulas on page 1.

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