Setting up
JJProjection distance for
(All measurements below are approximate and may differ slightly from the actual measurements.)
Projection size | For 4:3 aspect ratio | For 16:9 aspect ratio |
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Screen diagonal (SD) | Minimum distance | Maximum distance | Minimum distance | Maximum distance |
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(LW) | (LT) | (LW) | (LT) |
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0.76 m(30") | 0.7 m(2.26') | 1.1 m(3.74') | 0.8 m(2.49') | 1.2 m(4.07') |
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1.02 m(40") | 0.9 m(3.05') | 1.5 m(5.02') | 1.0 m(3.35') | 1.7 m(5.48') |
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1.27 m(50") | 1.2 m(3.87') | 1.9 m(6.30') | 1.3 m(4.23') | 2.1 m(6.89') |
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1.52 m(60") | 1.4 m(4.66') | 2.3 m(7.58') | 1.6 m(5.09') | 2.5 m(8.27') |
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1.78 m(70") | 1.7 m(5.45') | 2.7 m(8.86') | 1.8 m(5.94') | 3.0 m(9.68') |
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2.03 m(80") | 1.9 m(6.23') | 3.1 m(10.14') | 2.1 m(6.82') | 3.4 m(11.06') |
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2.29 m(90") | 2.2 m(7.05') | 3.5 m(11.42') | 2.3 m(7.68') | 3.8 m(12.47') |
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2.54 m(100") | 2.4 m(7.84') | 3.9 m(12.73') | 2.6 m(8.53') | 4.2 m(13.88') |
| Started |
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3.05 m(120") | 2.9 m(9.42') | 4.7 m(15.29') | 3.1 m(10.27') | 5.1 m(16.67') |
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3.81 m(150") | 3.6 m(11.81') | 5.8 m(19.13') | 3.9 m(12.86') | 6.4 m(20.83') |
| Getting |
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5.08 m(200") | 4.8 m(15.78') | 7.8 m(25.52') | 5.2 m(17.19') | - |
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6.35 m(250") | 6.0m(19.75') | - | 6.6 m(21.52') | - |
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7.62 m(300") | 7.2 m(23.72') | - | 7.9 m(25.85') | - |
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Any other projection distance can be obtained according to the screen dimensions (m) using the following calculations.
The distance is shown in units of meters. (The calculated distance may contain a certain error.) If the screen dimensions are written as “SD",
| For 4:3 aspect ratio | For 16:9 aspect ratio |
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Screen height (SH) | = SD(m) × 0.6 | = SD(m) × 0.490 |
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Screen width (SW) | = SD(m) × 0.8 | = SD(m) × 0.872 |
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Minimum distance (LW) | = 0.9531 × SD(m) - 0.0338 | = 1.0384 × SD(m) - 0.0337 |
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Maximum distance (LT) | = 1.5384 × SD(m) - 0.0327 | = 1.6756 × SD(m) - 0.0319 |
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ENGLISH - 23