100-inch 16:9 projector distance example
Calculate image width and a 2.66–3.32 metre lens-distance range from throw ratios 1.2–1.5.
Open exampleWorked projector geometry
Projector throw-distance examples
Follow one forward 100-inch calculation and one inverse room-depth calculation with complete units and assumptions.
Screen size at 3 metres with throw ratio 1.2–1.5
Invert the ratio range to obtain a 90.34–112.93 inch 16:9 diagonal range.
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