54
A
p
p
e
n
d
i
x
Projected Image Size for Optional Lenses
There is one long throw lens and three short throw lenses avail-
able. The short throw lenses are specific for certain focus dis-
tances. HW-LENS-ST1 has a focus distance of
3 feet to 4.9 feet
(0.9-1.5 m); HW-LENS-ST2 has a focus distance of
4.9 feet to 8.5
feet (1.5-2.6 m); HW-LENS-ST3 has a focus distance of 8.2 feet to
11.8 feet (2.5-3.6 m).
NOTE: The lens shift is not
adjustable on the optional short
throw lens. It is fixed at zero
degrees.
The formulas for distance to the screen are:
Long throw lens distance (ft) = diagonal image size (ft) ÷ .25
Short throw lens distance (ft) = diagonal image size (ft) ÷ 1.042
Table 4:
Diagonal Image Size and Width vs Distance to Screen-
Long Throw and Short Throw Lenses
Diagonal
Image Size
(inches)
Distance to screen
Image Width
(inches)
Long Throw
(feet)
Short Throw
(feet)
300
240
100
N/A
240
192
80
N/A
180
144
60
N/A
148
118
49
11.8
120
96
40
9.6
106
85
35
8.5
96
77
32
7.7
72
58
24
5.8
61
49
20
4.9
38
30
N/A
3.0
Содержание CEILING MOUNT LP 1000 SERIES
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