Setup
Screen Size and Projection Distance
Screen
H
Base line: |
Horizontal line passing through |
the lens center |
Lens center |
L:Projection distance |
Standard Lens Throw ratio 1:1.77 to 2.25
NORMAL Mode (4:3)
Picture (Screen) size |
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| 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) | |||
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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) | |||
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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) |
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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)
STRETCH Mode (16:9)
Picture (Screen) size |
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| 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) | 261" (662.9 cm) | 147" (373.4 cm) | 50' | 6" | (15.37 m) | 39' | 3" (11.95 m) | ||||
250" (635 cm) | 218" (553.7 cm) | 123" (312.4 cm) | 42' |
| (12.80 m) | 32' | 8" | (9.95 m) | 1/ 8" | ||
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225" (571.5 cm) | 196" (497.8 cm) | 110" (279.4 cm) | 37'10" | (11.51 m) | 29' | 5" | (8.95 m) | 3 / 4" | |||
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200" (508 cm) | 174" (441.9 cm) | 98" (248.9 cm) | 33' | 7" | (10.23 m) | 26' | 1" | (7.95 m) | 5 / | ||
150" (381 cm) | 131" (332.7 cm) | 74" (188 cm) | 25' | 2" | (7.66 m) | 19' | 7" | (5.95 m) | 1 / 2" | ||
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133" (337.8 cm) | 116" (294.6 cm) | 65" (165.1 cm) | 22' | 3" | (6.78 m) | 17' | 4" | (5.27 m) | 3 / | ||
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106" (269.2 cm) | 92" | (233.6 cm) | 52" (132 cm) | 17' | 9" | (5.40 m) | 13' | 9" | (4.19 m) | 3 / 4" | |
100" (254 cm) | 87" | (220.9 cm) | 49" (124.4 cm) | 16' | 9" | (5.09 m) | 13' |
| (3.95 m) | 5 / 8" | |
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92" (233.6 cm) | 80" | (203.2 cm) | 45" (114.3 cm) | 15' | 5" | (4.68 m) | 11' 11" | (3.63 m) | 9 / | ||
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84" (213.3 cm) | 73" | (185.4 cm) | 41" (104.1 cm) | 14' |
| (4.27 m) | 10' 11" | (3.31 m) | 3 / 8" | ||
72" (182.8 cm) | 63" | (160 cm) | 35" (88.9 cm) | 12' |
| (3.65 m) | 9' | 4" | (2.83 m) | 3 / | |
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60" (152.4 cm) | 52" | (132 cm) | 29" (73.6 cm) | 10' |
| (3.03 m) | 7' | 9" | (2.35 m) |
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40" (101.6 cm) | 35" | (88.9 cm) | 20" (50.8 cm) | 6' | 7" | (2.00 m) | 5' | 2" | (1.55 m) |
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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
Note
•There is an error of ± 3% in the formula above.
•Values with a minus
-30
