What does the throw distance depend on?

The throw distance is the distance between the projection source (such as a projector) and the surface where the image will be displayed (such as a screen). This distance is crucial in determining how large the image will appear on the screen. The throw distance depends on the lens ratio, which is a specification that indicates how much distance is required to achieve a certain image size. The formula for throw distance uses the screen width and the lens ratio to calculate the necessary distance to achieve the desired image projection.

By multiplying the screen width by the lens ratio, you can determine how far back the projector needs to be placed to fill the screen adequately with an image of the expected size. This relationship is essential for proper installation and setup of projection systems, ensuring that images are clear and properly sized for the viewing audience. Understanding this concept helps technicians design and implement effective AV installations.