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▶
zWhen the screen aspect ratio is 4:3
(All measurements below are approximate and may differ slightly from the actual measurements.)
Image diagonal size (SD)
1.02
(40")
1.27
(50")
1.52
(60")
1.78
(70")
2.03
(80")
2.29
(90")
2.54
(100")
3.05
(120")
3.81
(150")
5.08
(200")
6.35
(250")
7.62
(300")
■ Projection distance calculation formula
▶
You can calculate projection dimensions from the projection screen size SD (m) using the formula below.
The unit of the formula is "m". (All values obtained using the formula below are approximate and may differ
slightly from the actual values.)
Projection screen height (SH)
Projection screen width (SW)
Minimum projection distance (LW)
Maximum projection distance (LT)
Projection distance (L)
Minimum projection
Maximum projection
distance (LW)
1.38
(4' 6")
1.74
(5' 9")
2.10
(6' 11")
2.45
(8' 0")
2.81
(9' 3")
3.17
(10' 5")
3.53
(11' 7")
4.24
(13' 11")
5.32
(17' 5")
10.67
7.11
(23' 4")
14.24
8.90
(29' 2")
17.81
10.69
(35' 1")
21.38
Screen aspect ratio 16:9
= SD (m) x 0.490
= SD (m) x 0.872
= SD (m) x 1.1503 - 0.056
= SD (m) x 2.2951 - 0.041
Distance from the center of
lens to the image lower end (H)
distance (LT)
2.82
(9' 3")
3.53
(11' 7")
4.25
(13' 11")
4.96
(16' 3")
5.67
(18' 7")
6.39
(21' 0")
7.10
(23' 4")
8.53
(28' 0")
(35' 0")
(46' 9")
(58' 5")
(70' 2")
Screen aspect ratio 4:3
= SD (m) x 0.6
= SD (m) x 0.8
= SD (m) x 1.4098 - 0.053
= SD (m) x 2.8106 - 0.037
Setting up
(unit: m)
- 0.02 - 0.63
- 0.02 - 0.78
- 0.03 - 0.94
- 0.03 - 1.10
- 0.04 - 1.26
- 0.04 - 1.41
- 0.05 - 1.57
- 0.05 - 1.88
- 0.07 - 2.36
- 0.09 - 3.14
- 0.12 - 3.93
- 0.15 - 4.72
ENGLISH - 25
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