Adjusting the screen size and projection distance – 3M MP7640i/MP7740i User Manual
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Refer to the illustrations and tables below to determine the screen size and
projection distance.
Adjusting the Screen Size and Projection Distance
Top view
a
b
Lens center
The screen
Side view
Top view
a
b
Lens center
The screen
Side view
If 4:3 aspect ratio
If 16:9 aspect ratio
4
3
9
16
The values shown in the table are calculated for a full size screen
(MP7640i: 800x600 pixels / MP7740i: 1024x768 pixels).
a:Distance from the projector to the screen (±10%)
b:Distance from the lens center to the bottom of the screen (±10%)
Screen size
[inch (m)]
a [inch (m)]
b
[inch (cm)]
Min.
Max.
40 (1.0)
37 (0.9)
46 (1.2)
3 (8.7)
60 (1.5)
57 (1.5)
69 (1.8)
5 (13.1)
80 (2.0)
77 (1.9)
93 (2.4)
7 (17.4)
100 (2.5)
96 (2.4)
116 (2.9)
9 (21.8)
120 (3.0)
116 (2.9)
139 (3.5)
10 (26.1)
150 (3.8)
145 (3.7)
174 (4.4)
13 (32.7)
200 (5.0)
194 (4.9)
233 (5.9)
17 (43.5)
Screen size
[inch (cm)]
a [inch (m)]
b
[inch (cm)]
Min.
Max.
30 (0.8)
30 (0.8)
38 (1.0)
0 (1)
40 (1.0)
41 (1.0)
50 (1.3)
0 (1)
60 (1.5)
62 (1.6)
76 (1.9)
1 (2)
80 (2.0)
83 (2.1)
101 (2.6)
1 (2)
100 (2.5)
105 (2.7)
127 (3.2)
1 (3)
120 (3.0)
126 (3.2)
152 (3.9)
1 (4)
150 (3.8)
158 (4.0)
190 (4.8)
2 (4)
200 (5.0)
212 (5.4)
254 (6.4)
2 (6)