Projection Distance and Size
Use the figures, tables, and formulas below to determine the projection size and projection distance. (Projection sizes are approximate values for
PJ X3131
Screen As seen from above
90°
As seen from the side
Lens center
90°
a
a is the distance (m, feet) between the lens and the screen, and corresponds to a range of 0.89 m (2.92 ft.) to 10.93 m (35.86 ft.). H is the height from the image bottom to the center of the lens.
PJ WX3131
Screen As seen from above
90°
As seen from the side
Lens center
90°
a
a is the distance (m, feet) between the lens and the screen, and corresponds to a range of 0.94 m (3.08 ft.) to11.58 m (37.99 ft.).
The lens center is in the same level with an image bottom.
a (min length) = Projection size (inches) - 0.795 |
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| 32.885 |
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a (max length) = Projection size (inches) - 0.673 |
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| 27.397 |
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Projection | Projection distance a |
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min length |
| max length | Height (H) |
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size |
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(zooming max) |
| (zooming min) |
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| Preparations | |
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30 inches | 0.89 m (2.92 ft.) |
| 1.07 m (3.51 ft.) | 6.50 cm (0.21 ft.) |
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40 inches | 1.19 m (3.90 ft.) |
| 1.44 m (4.72 ft.) | 8.70 cm (0.29 ft.) |
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50 inches | 1.50 m (4.92 ft.) |
| 1.80 m (5.91 ft.) | 10.90 cm (0.36 ft.) |
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60 inches | 1.80 m (5.91 ft.) |
| 2.17 m (7.12 ft.) | 13.10 cm (0.43 ft.) |
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70 inches | 2.10 m (6.89 ft.) |
| 2.53 m (8.30 ft.) | 15.20 cm (0.50 ft.) |
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80 inches | 2.41 m (7.91 ft.) |
| 2.90 m (9.51 ft.) | 17.40 cm (0.57 ft.) |
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90 inches | 2.71 m (8.89 ft.) |
| 3.26 m (10.70 ft.) | 19.60 cm (0.64 ft.) |
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100 inches | 3.02 m (9.91 ft.) |
| 3.63 m (11.91 ft.) | 21.80 cm (0.72 ft.) |
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120 inches | 3.63 m (11.91 ft.) |
| 4.36 m (14.30 ft.) | 26.10 cm (0.86 ft.) |
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150 inches | 4.54 m (14.90 ft.) |
| 5.45 m (17.88 ft.) | 32.70 cm (1.07 ft.) |
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200 inches | 6.06 m (19.88 ft.) |
| 7.28 m (23.88 ft.) | 43.50 cm (1.43 ft.) |
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250 inches | 7.58 m (24.87 ft.) |
| 9.10 m (29.86 ft.) | 54.40 cm (1.78 ft.) |
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300 inches | 9.10 m (29.86 ft.) |
| 10.93 m (35.86 ft.) | 65.30 cm (2.14 ft.) |
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a (min length) = Projection size (inches) - 0.758 31.022
a (max length) = Projection size (inches) - 0.643 25.845
Projection | Projection distance a | ||
min length | max length | ||
size | |||
(zooming max) | (zooming min) | ||
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30 inches | 0.94 m (3.08 ft.) | 1.14 m (3.74 ft.) | |
40 inches | 1.27 m (4.17 ft.) | 1.52 m (4.99 ft.) | |
50 inches | 1.59 m (5.22 ft.) | 1.91 m (6.27 ft.) | |
60 inches | 1.91 m (6.27 ft.) | 2.30 m (7.55 ft.) | |
70 inches | 2.23 m (7.32 ft.) | 2.68 m (8.79 ft.) | |
80 inches | 2.55 m (8.37 ft.) | 3.07 m (10.07 ft.) | |
90 inches | 2.88 m (9.45 ft.) | 3.46 m (11.35 ft.) | |
100 inches | 3.20 m (10.50 ft.) | 3.84 m (12.60 ft.) | |
120 inches | 3.84 m (12.60 ft.) | 4.62 m (15.16 ft.) | |
150 inches | 4.81 m (15.78 ft.) | 5.78 m (18.96 ft.) | |
200 inches | 6.42 m (21.06 ft.) | 7.71 m (25.30 ft.) | |
250 inches | 8.03 m (26.35 ft.) | 9.65 m (31.66 ft.) | |
300 inches | 9.65 m (31.66 ft.) | 11.58 m (37.99 ft.) | |
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