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
Screen As seen from above
a (min length) = | projection size (inches) | |
25.3807 | ||
|
H
90 | a (max length) = | projection size (inches) | |
23.0947 | |||
|
|
| projection | projection distance a (m) | height | Preparations | |
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| min length | max length |
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| size | (H) |
| ||
| (zooming | (zooming |
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As seen from the side | (inches) | (cm) |
| ||
max) | min) |
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|
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Lens center | 34.67 | 1.36 | 1.50 | 7.9 |
|
40 | 1.57 | 1.73 | 9.1 |
| |
|
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| 60 | 2.36 | 2.60 | 13.7 |
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| 80 | 3.15 | 3.46 | 18.3 |
|
90 | 100 | 3.94 | 4.33 | 22.9 |
|
150 | 5.90 | 6.49 | 34.3 |
| |
a |
| ||||
200 | 7.87 | 8.65 | 45.7 |
| |
| 250 | 9.84 | 10.82 | 57.2 |
|
| 254.22 | 10 | 11 | 58.1 |
|
a is the distance (m) between the lens and the screen, and corresponds to a range of 1.36 m to 11 m. H is the height from the image bottom to the center of the lens.
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