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Adjusting the Screen Size and Projection Distance
Refer to the illustrations and tables below to determine the screen size and
projection distance.
The values shown in the table are calculated for a full size screen
(ED-S3170AT:800 x 600 pixels , ED-X3250AT/ED-X3280AT:1024 x 768 pixels).
a:Distance from the projector to the screen (±10%)
b:Distance from the lens center to the bottom of the screen (±10%)
c:Distance from the lens center to the top of the screen (±10%)
The screen
Top view
Lens center
c
Side view
b
a
The screen
Top view
c
Lens center
Side view
b
a
If 4:3 aspect ratio
4
3
Screen Size [inch (m)]
30 (0.8)
40 (1.0)
50 (1.3)
60 (1.5)
70 (1.8)
80 (2.0)
90 (2.3)
100 (2.5)
120 (3.0)
150 (3.8)
200 (5.0)
250 (6.3)
300 (7.5)
If 16:9 aspect ratio
16
9
Screen Size [inch (m)]
30 (0.8)
40 (1.0)
50 (1.3)
60 (1.5)
70 (1.8)
80 (2.0)
90 (2.3)
100 (2.5)
120 (3.0)
150 (3.8)
200 (5.0)
250 (6.3)
300 (7.5)
a [inch (m)]
b
[inch (cm)]
[inch (cm)]
Min.
Max.
35 (0.9) 42 (1.1)
1 (2)
17 (44)
47 (1.2) 56 (1.4)
1 (3)
23 (58)
59 (1.5) 71 (1.8)
1 (4)
29 (73)
71 (1.8) 85 (2.2)
2 (4)
34 (87)
83 (2.1) 100 (2.5)
2 (5)
40 (102)
95 (2.4) 114 (2.9)
2 (6)
46 (116)
107 (2.7) 129 (3.3)
3 (7)
51 (131)
119 (3.0) 143 (3.6)
3 (7)
57 (145)
143 (3.6) 172 (4.4)
3 (9)
69 (174)
180 (4.6) 216 (5.5)
4 (11) 86 (218)
240 (6.1) 288 (7.3)
6 (15) 114 (290)
300 (7.6) 361 (9.2)
7 (18) 143 (363)
360 (9.2) 433 (11.0)
9 (22) 171 (435)
a [inch (m)]
b
[inch (cm)]
[inch (cm)]
Min.
Max.
38 (1.0) 46 (1.2)
2 (4)
16 (41)
51 (1.3) 61 (1.6)
2 (5)
22 (55)
64 (1.6) 77 (2.0)
3 (6)
27 (69)
77 (2.0) 93 (2.4)
3 (8)
32 (82)
90 (2.3) 109 (2.8)
4 (9)
38 (96)
104 (2.6) 125 (3.2) 4 (10) 43 (110)
117 (3.0) 140 (3.6) 5 (12) 49 (124)
130 (3.3) 156 (4.0) 5 (13) 54 (137)
156 (4.0) 188 (4.8) 6 (15) 65 (165)
196 (5.0) 235 (6.0) 8 (19) 81 (206)
261 (6.6) 314 (8.0) 10 (26) 108 (275)
327 (8.3) 393 (10.0) 13 (32) 135 (343)
393 (10.0) 472 (12.0) 15 (39) 162 (412)
c
c
7
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