HP mp2200 User's Guide - Page 14
determine where to install the projector relative to the screen., Calculating projection distances
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Image size relative to distance from the screen Image size (diagonal) Image size (width) (inches) (meters) (inches) (meters) 40 1.0 32 0.8 60 1.5 48 1.2 80 2.0 64 1.6 100 2.5 80 2.0 120 3.0 96 2.4 150 3.8 120 3.0 180 4.6 144 3.7 200 5.1 160 4.1 240 6.1 192 4.9 Distance (lens to screen) (feet, inches) (meters) 5' 4" to 6' 2" 1.6 to 1.9 8' 0" to 9' 2" 2.4 to 2.8 10' 8" to 12' 3" 3.3 to 3.7 13' 4" to 15' 4" 4.1 to 4.7 16' 0" to 18' 5" 4.9 to 5.6 20' 0" to 23' 0" 6.1 to 7.0 24' 0" to 27' 7" 7.3 to 8.4 26' 8" to 30' 8" 8.1 to 9.3 32' 0" to 33' 0" 9.8 to 10.0 If you do not want to use the distance table, you can use the following equations to help determine where to install the projector relative to the screen. Calculating projection distances distance from lens to screen = A × width of screen minimum and maximum distance from screen = B width of screen = 0.8 × diagonal of screen (for 3:4 screen) projector lens below bottom of screen = C × width of screen (for 4:3 screen) A = 2.0 to 2.3 B = 1.5 to 10 m (5 to 33 ft) C = 0.11 to 0.50 14 Setting Up