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-28
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. [χ] Width Height Maximum [L1] Minimum [L2]
to the bottom of the image [H]
300" (762 cm) 261" (663 cm)
147" (373 cm)
50' 6" (15.4 m) 39' 3" (12.0 m) –4 15 / 16"(–12.6 cm)
250" (635 cm) 218" (554 cm)
123" (312 cm)
42' (12.8 m) 32' 8" (10.0 m) –4 1 / 8"(–10.5 cm)
225" (572 cm) 196" (498 cm)
110" (279 cm)
37'10" (11.5 m) 29' 5" (9.0 m) –3 3 / 4" (–9.5 cm)
200" (508 cm)
174" (442 cm)
98" (249 cm)
33' 7" (10.2 m) 26' 1" (8.0 m) –3 5 / 16"(–8.4 cm)
150" (381 cm)
131" (333 cm)
74" (188 cm)
25' 2" (7.7 m) 19' 7" (6.0 m) –2 1 / 2" (–6.3 cm)
133" (338 cm) 116" (295 cm)
65" (165 cm)
22' 3" (6.8 m) 17' 4" (5.3 m) –2 3 / 16"(–5.6 cm)
106" (269 cm)
92" (234 cm)
52" (132 cm)
17' 9" (5.4 m) 13' 9" (4.2 m) –1 3 / 4" (–4.5 cm)
100" (254 cm) 87" (221 cm)
49" (124 cm)
16' 9" (5.1 m) 13' (4.0 m) –1 5 / 8" (–4.2 cm)
92" (234 cm) 80" (203 cm)
45" (114 cm)
15' 5" (4.7 m) 11'11" (3.6 m) –1 9 / 16"(–3.9 cm)
84" (213 cm) 73" (185 cm)
41" (104 cm)
14' (4.3 m) 10' 11" (3.3 m) –1 3 / 8" (–3.5 cm)
72" (183 cm) 63" (160 cm) 35" (89 cm)
12' (3.7 m) 9' 4" (2.8 m) –1 3 / 16"(–3.0 cm)
60" (152 cm) 52" (132 cm) 29" (74 cm)
10' (3.0 m) 7' 9" (2.4 m) –31 / 32"(–2.5 cm)
40" (102 cm) 35" (89 cm) 20" (51 cm)
6' 7" (2.0 m) 5' 2" (1.6 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
χ
: Picture size (diag.) (in)
[Feet, inches]
L1 (ft) =
(0.0472
χ
– 0.0517) / 0.3048
L2 (ft) =
(0.0367
χ
– 0.0529) / 0.3048
H (in) =
(0.1499
χ
– 0.0064) / 2.54
[m, cm]
L1 (m) =
0.0472
χ
– 0.0517
L2 (m) =
0.0367
χ
– 0.0529
H (cm) =
0.1499
χ
– 0.0064
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. [χ] Width Height Maximum [L1] Minimum [L2]
to the bottom of the image [H]
300" (762 cm)
240" (610 cm)
180"(457 cm)
46' 4" (14.1 m) 36' (11.0 m) 17 11 / 16" (45.0 cm)
250" (635 cm) 200" (508 cm) 150" (381 cm)
38' 7" (11.8 m) 30' (9.1 m) 14 3 / 4" (37.5 cm)
200" (508 cm)
160" (406 cm)
120" (305 cm)
30'10" (9.4 m) 24' (7.3 m) 11 13 / 16" (30.0 cm)
150" (381 cm)
120" (305 cm)
90" (229 cm)
23' 1" (7.0 m) 17'11" (5.5 m) 8 7 / 8" (22.5 cm)
100" (254 cm) 80" (203 cm)
60" (152 cm)
15' 4" (4.7 m) 11'11" (3.6 m) 5 7 / 8" (15.0 cm)
84" (213 cm) 67" (170 cm) 50" (127 cm)
12'11" (3.9 m) 10' (3.0 m) 4 15 / 16" (12.6 cm)
72" (183 cm) 58" (147 cm)
43" (109 cm)
11' (3.4 m) 8' 6" (2.6 m) 4 1 / 4" (10.8 cm)
60" (152 cm) 48" (122 cm) 36" (91 cm)
9' 2" (2.8 m) 7' 1" (2.2 m) 3 9 / 16" (9.0 cm)
40" (102 cm) 32" (81 cm) 24" (61 cm)
6' 1" (1.8 m) 4' 8" (1.4 m) 2 3 / 8" (6.0 cm)
Setup
Screen Size and Projection Distance
The formula for picture size and
projection distance
χ
: Picture size (diag.) (in)
[Feet, inches]
L1 (ft) =
(0.0514
χ
– 0.0516) / 0.3048
L2 (ft) =
(0.04
χ
– 0.0523) / 0.3048
H (in) =
(–0.0422
χ
+ 0.0018) / 2.54
[m, cm]
L1 (m) =
0.0514
χ
– 0.0516
L2 (m) =
0.04
χ
– 0.0523
H (cm) =
–0.0422
χ
+ 0.0018
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