Ultra-short-throw (UST)
Projectors or lenses with throw ratios below about 0.4:1, placed right next to the surface.
UST projectors sit centimetres from a wall. Some installation lenses use a periscope (folded) design for very short throws.
Related terms
- Short-throw lensA lens with a throw ratio below about 1:1, for large images from short distances.
- Throw ratioDistance from the lens to the image divided by the image width.
Put it into practice: throw-distance calculator · lumens calculator · intro to projection mapping