Adjusting the screen size and projection distance – Dukane 28A8247 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
c
b
Lens center
The screen
Side view
Top view
a
c
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
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%)
Screen Size [inch (m)]
a [inch (m)]
b
[inch (cm)]
c
[inch (cm)]
Min.
Max.
30 (0.8)
42 (1.1) 56 (1.4)
1 (2)
17 (44)
40 (1.0)
57 (1.4) 75 (1.9)
1 (3)
23 (58)
50 (1.3)
72 (1.8) 94 (2.4)
1 (4)
29 (73)
60 (1.5)
87 (2.2) 113 (2.9)
2 (4)
34 (87)
70 (1.8)
102 (2.6) 133 (3.4)
2 (5)
40 (102)
80 (2.0)
117 (3.0) 152 (3.9)
2 (6)
46 (116)
90 (2.3)
131 (3.3) 171 (4.3)
3 (7)
51 (131)
100 (2.5)
146 (3.7) 190 (4.8)
3 (7)
57 (145)
120 (3.0)
176 (4.5) 229 (5.8)
3 (9)
69 (174)
150 (3.8)
221 (5.6) 287 (7.3)
4 (11)
86 (218)
200 (5.0)
296 (7.5) 383 (9.7)
6 (15)
114 (290)
250 (6.3)
371 (9.4) 479 (12.2)
7 (18)
143 (363)
300 (7.5)
446 (11.3) 576 (14.6)
9 (22)
171 (435)
Screen Size [inch (m)]
a [inch (m)]
b
[inch (cm)]
c
[inch (cm)]
Min.
Max.
30 (0.8)
45 (1.2) 61 (1.5)
1 (4)
16 (41)
40 (1.0)
62 (1.6) 81 (2.1)
2 (5)
21 (54)
50 (1.3)
78 (2.0) 102 (2.6)
2 (6)
26 (67)
60 (1.5)
94 (2.4) 123 (3.1)
3 (7)
31 (79)
70 (1.8)
111 (2.8) 144 (3.7)
3 (8)
36 (92)
80 (2.0)
127 (3.2) 165 (4.2)
4 (9)
41 (105)
90 (2.3)
143 (3.6) 186 (4.7)
4 (11)
47 (119)
100 (2.5)
160 (4.1) 207 (5.3)
5 (12)
53 (135)
120 (3.0)
192 (4.9) 249 (6.3)
6 (14)
65 (166)
150 (3.8)
241 (6.1) 312 (7.9)
7 (18)
82 (207)
200 (5.0)
322 (8.2) 147 (10.6) 9 (24)
106 (270)
250 (6.3)
404 (10.3) 522 (13.3) 12 (29) 124 (315)
300 (7.5)
485 (12.3) 627 (15.9) 14 (35) 128 (324)