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Floor Installation Using Rear Projection Flat Screen
When the optical axis angle is 2°
Optical axis
angle
14.6°
Standard hole for
installation
Floor
60
Screen size
(inches)
A (Vsize)
914
(36)
B (Hcent)
127
(5)
E (Xlens)
1757
1
(69
/
)
4
F (Lhole)
2038
1
(80
/
)
4
G (Lmax)
2700
3
(106
/
) (116
8
What is the optical axis angle?
The optical axis angle is the angle between the horizontal level line and the
straight line from the center of the projector's green lens to the center of
the screen. When using a rear projection screen, you can get the brightest
picture when the center of the screen is aligned with a straight line
extension of the center of the green lens.
Therefore, the most suitable optical axis angle varies depending on the
height of the screen and your line of sight.
Wall
G
Center of the screen
–
2°
B
0
+
E
F
70
80
90
1067
1219
1372
1
1
(42
/
)
(48)
(54
/
)
8
8
118
108
99
3
3
(4
/
)
(4
/
)
(4)
4
8
2024
2294
2564
3
3
(79
/
)
(90
/
)
(101) (111
4
8
2305
2575
2845
3
1
1
(90
/
) (101
/
) (112
/
) (122
4
2
8
2966
3236
3507
7
1
1
/
) (127
/
) (138
/
) (148
8
2
8
Necessary parts modifications
Changing the polarity used for "Floor installation, rear projection"
For details, see "Changing the Polarity" on page 19 (EN).
A
100
120
150
1524
1829
2286
1
(60)
(72
/
)
(90)
8
89
70
42
5
7
11
(3
/
)
(2
/
)
(1
/
)
8
8
16
2834
3371
4185
5
3
7
/
) (132
/
) (164
/
) (196
8
4
8
3115
3652
4466
3
7
7
/
) (143
/
) (175
/
) (207
4
8
8
3776
4314
5128
3
7
/
) (169
/
)
(202) (233
4
8
Unit: mm (inches)
180
200
250
2743
3048
3810
(108)
(120)
(150)
14
–5
–52
9
7
1
(
/
)
(–
/
)
(–2
/
)
16
32
8
4997
5536
6889
3
1
/
)
(218) (271
/
) (324
4
4
5279
5817
7171
7
1
3
/
) (229
/
) (282
/
) (335
8
8
8
5940
6478
7832
7
1
3
/
) (255
/
) (308
/
)
8
8
8
13
Installation
300
4572
(180)
–100
(–4)
8250
7
/
)
8
8531
7
/
)
8
9193
(362)
(EN)
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