What is throw distance?

Throw distance refers specifically to the space between the projector lens and the screen. It is a crucial consideration in projector setup because it determines how large the projected image will be based on the projection's optical design. Data from different projector models indicate that throw distance can vary significantly depending on the lens type, which can result in varying image sizes for the same distance. Understanding throw distance helps professionals ensure that the projector is positioned correctly to achieve the desired image size and clarity on the screen.

The other options relate to other important concepts in audiovisual installations but do not define throw distance accurately. For instance, the distance between the audience and the screen involves viewer placement and can influence sightlines and engagement, while the distance from the projector to the power source is about electrical logistics, not projection optics. Lastly, the distance that sound travels in a room pertains to acoustics and does not relate to the projection setup.