When discussing the throw capabilities of a projector, the “short vs long” code is referring to the amount of distance you’ll need to “throw” an image between the projector itself and the screen to get the display size you desire. Simply put, the lens and mirror assembly built into a projector determine its throw distance capability. While most projectors send light onto the screen directly through the lens, Ultra Short Throw projectors direct the emitting lens light away from the screen — reflecting from a mirror of specific angle to direct the image on the screen. This is how they achieve the narrow distance from the installation point to the screen. Regardless of the brand, these are categorized by how much distance the projector needs from the screen to create a 100″ image.
Why Go Short?
A big reason for schools, and even the home theatre crowd, opt for short or ultra-short throw projectors in the clarity of picture, sans annoying shadows. No longer will “little bunny Foo-Foo” hop across the algebra equations, thanks to Johnny in the front row. And Uncle Mike crossing the room for a popcorn refill won’t inadvertently black out the screen just as the culprit in the evening’s who-dun-it is revealed. The close placement of the projector to the wall or whiteboard relieves any disturbance of the picture.
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