Advertisement
L102W Installation Guide
Ceiling and Desktop Mounted
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 below for popular screen sizes:
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 = 0.34W
C = 1.432W- 1.966
D = 0.033W
α = tanˉ¹ (B/C)
Distance Chart for popular 16:10 screens
Screen Size (16:10)
Diagonal Width(W) Height (H)
inches
inches
18
15
31
26
40
34
60
51
80
68
99
84
.
Note:
For screen sizes not indicated on the projection tables, use the formulas on above
www.necdisplay.com
B
inches
inches
9
5
16
9
21
12
32
17
43
23
53
29
NEC Display Solutions of America, Inc.
16:10 Screen Formulas:
W = H x 16/10
H = W x 10/16
Screen Diagonal = W x 18.868/16
C
inches
inches
20
35
47
71
95
118
L102W
D
α
degree
0.5
13.8
0.9
13.8
1.1
13.8
1.7
13.8
2.2
13.8
2.8
13.8
Page 2 of 5
Rev 1.0
Advertisement
