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