Installation
Throw Distance ➤ Throw distance is the distance measured from the front of the projector to the screen. This is an important calculation in any projector installation as it determines whether or not you have enough room to install your projector with a desired screen size and if your image will be the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and multiplying it by the lens throw ratio; see Figure
Estimating Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Screen | width |
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| (w) | |
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TD
Figure 3-1. Estimating Throw Distance
Throw Distance Ranges -
Table 3-3. VX-40d/-50d Lens Options and Throw Ratios
| Throw Ratio | Throw Distance Range | ||
| (in inches, with | |||
Lens Option (Note 2) | (Throw Dist. | ⎟ | ||
| Screen Width) |
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| Minimum | Maximum | ||
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Telesto A | 0.8 (Fixed) |
| For | |
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| Runco Technical Support for more information. | |
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Telesto B | 1.65 - 1.95 |
| 165 | 195 |
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Telesto C | 2.04 - 2.73 |
| 204 | 273 |
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Telesto C with CineWide | 1.55 - 2.01 |
| 155 | 201 |
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Telesto D | 2.86 - 4.83 |
| 286 | 483 |
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Telesto D with CineWide | 2.17 - 3.60 |
| 217 | 360 |
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Telesto E | 4.96 - 7.90 |
| 496 | 790 |
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Telesto E with CineWide | 3.76 - 5.90 |
| 376 | 590 |
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Notes:
1. Throw distance does not affect image quality, provided these ranges are taken into account.
2. Only the Telesto C, D and E lenses can be used with the optional CineWide (secondary anamorphic) lens. Doing so affects the throw distances as shown here.
20 | Runco |