Definition of Throw Distance
Throw distance is the distance required between the projector lens and the screen to display a specific size image.
There are three throw distance categories for video projectors:
- Standard Throw (or Long Throw)
- Short Throw
- Ultra Short Throw
Standard Throw (Long Throw) projectors usually require 6 or more feet to project an 80-inch image.
Short Throw projectors need about 4-5 feet to project a 100-inch image.
Ultra Short Throw projectors can display a 100-inch image at a distance of about 2 feet or less.
You can use the equation to calculate how close you can place your projector:
Distance = throw ratio * image width