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H
Screen
L Projection distance
Lens center
Base line
Horizontal line passing through
the lens center
STRETCH Mode (16:9)
Picture (Screen) size Projection distance (L)
Distance from the lens center
Diag. (X) Width Height Maximum (L1) Minimum (L2)
to the bottom of the image (H)
300" (762 cm) 240" (609.6 cm)
180" (457.2 cm)
50' 6" (15.37 m) 39' 3" (11.95 m) –415/ 16"(–12.6 cm)
250" (635 cm) 218" (553.7 cm)
123" (312.4 cm)
42' (12.80 m) 32' 8" (9.95 m) –4 1/ 8"(–10.5 cm)
225" (571.5 cm) 196" (497.8 cm)
110" (279.4 cm)
37'10" (11.51 m) 29' 5" (8.95 m) –3 3 / 4" (–9.5 cm)
200" (508 cm)
174" (441.9 cm)
98" (248.9 cm)
33' 7" (10.23 m) 26' 1" (7.95 m) –3 5 / 16"(–8.4 cm)
150" (381 cm)
131" (332.7 cm)
74" (188 cm)
25' 2" (7.66 m) 19' 7" (5.95 m) –2 1 / 2" (–6.3 cm)
133" (337.8 cm) 116" (294.6 cm)
65" (165.1 cm)
22' 3" (6.78 m) 17' 4" (5.27 m) –2 3 / 16"(–5.6 cm)
106" (269.2 cm)
92" (233.6 cm)
52" (132 cm)
17' 9" (5.40 m) 13' 9" (4.19 m) –1 3 / 4" (–4.5 cm)
100" (254 cm) 87" (220.9 cm)
49" (124.4 cm)
16' 9" (5.09 m) 13' (3.95 m) –1 5 / 8" (–4.2 cm)
92" (233.6 cm) 80" (203.2 cm)
45" (114.3 cm)
15' 5" (4.68 m) 11'11" (3.63 m) –1 9 / 16"(–3.9 cm)
84" (213.3 cm) 73" (185.4 cm)
41" (104.1 cm)
14' (4.27 m) 10'11" (3.31 m) –1 3 / 8" (–3.5 cm)
72" (182.8 cm) 63" (160 cm) 35" (88.9 cm)
12' (3.65 m) 9' 4" (2.83 m) –1 3 / 16"(–3.0 cm)
60" (152.4 cm) 52" (132 cm) 29" (73.6 cm)
10' (3.03 m) 7' 9" (2.35 m) –31 / 32"(–2.5 cm)
40" (101.6 cm) 35" (88.9 cm) 20" (50.8 cm)
6' 7" (2.00 m) 5' 2" (1.55 m) –11 / 16"(–1.7 cm)
Note
•There is an error of ± 3% in the formula above.
•Values with a minus (–) sign indicate the distance of the lens center below the bottom of the image.
The formula for picture size and
projection distance
L1 (ft)=
(0.0472X – 0.0517) / 0.3048
L2 (ft)=
(0.0367X – 0.0529) / 0.3048
H (in) =
(0.1499X – 0.0064) / 2.54
X: Picture size (diag.) (in)
L: Projection distance (ft)
L1:Maximum projection distance (ft)
L2:Minimum projection distance (ft)
H: Distance from the lens center to
the bottom of the image (in)
The formula for picture size and
projection distance
L1 (ft)=
(0.0514X – 0.0516) / 0.3048
L2 (ft)=
(0.04X – 0.0523) / 0.3048
H (in) =
(– 0.0422X + 0.0018) / 2.54
Standard Lens
Throw ratio
1:1.77 to 2.25
NORMAL Mode (4:3)
Picture (Screen) size Projection distance (L)
Distance from the lens center
Diag. (X) Width Height Maximum (L1) Minimum (L2)
to the bottom of the image (H)
300" (762 cm)
240" (609.6cm)
180"(457.2 cm)
46' 4" (14.12 m) 36' (10.97 m) 17 11 / 16" (45.0 cm)
250" (635 cm) 200" (508 cm) 150" (381 cm)
38' 7" (11.76 m) 30' (9.13 m) 14 3 / 4" (37.5 cm)
200" (508 cm)
160" (406.4 cm)
120" (304.8 cm)
30'10" (9.39 m) 24' (7.29 m) 11 13 / 16" (30.0 cm)
150" (381 cm)
120" (304.8 cm)
90" (228.6 cm)
23' 1" (7.03 m) 17'11" (5.46 m) 8 7 / 8" (22.5 cm)
100" (254 cm) 80" (203.2 cm)
60" (152.4 cm)
15' 4" (4.67 m) 11'11" (3.62 m) 5 7 / 8" (15.0 cm)
84" (213.3 cm) 67" (170.1 cm) 50" (127 cm)
12'11" (3.92 m) 10' (3.03 m) 4 15 / 16" (12.6 cm)
72" (182.8 cm) 58" (147.3 cm)
43" (109.2 cm)
11' (3.35 m) 8' 6" (2.59 m) 4 1 / 4" (10.8 cm)
60" (152.4 cm) 48" (121.9 cm) 36" (91.4 cm)
9' 2" (2.78 m) 7' 1" (2.15 m) 3 9 / 16" (9.0 cm)
40" (101.6 cm) 32" (81.2 cm) 24" (60.9 cm)
6' 1" (1.84 m) 4' 8" (1.42 m) 2 3 / 8" (6.0 cm)
Setup
Screen Size and Projection Distance