BenQ MX660 MX660P User Manual - Page 14
Obtaining a preferred projected image size, Projection dimensions - 3200
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Obtaining a preferred projected image size The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the projected image size. For example, if you are using an 120-inch screen, the recommended projection distance is 4246 mm and the vertical offset is 137 mm. If your measured projection distance is 5.0 m (5000 mm), the closest match in the "Distance from screen (mm)" column is 5308 mm. Looking across this row shows that a 150'' (about 3.8 m) screen is required. Projection dimensions Refer to "Dimensions" on page 62 for the center of lens dimensions of this projector before calculating the appropriate position. Maximum zoom Minimum zoom Screen Center of lens Vertical offset Projection distance Screen size Diagonal Inch mm W (mm) H (mm) 40 1016 813 50 1270 1016 60 1524 1219 80 2032 1626 100 2540 2032 120 3048 2438 150 3810 3048 200 5080 4064 220 5588 4470 250 6350 5080 300 7620 6096 610 762 914 1219 1524 1829 2286 3048 3353 3810 4572 Distance from screen (mm) Min length (max. zoom) Average Max length (min. zoom) 1231 1415 1600 1538 1769 2000 1846 2123 2400 2462 2831 3200 3077 3538 4000 3692 4246 4800 4615 5308 6000 6154 7077 8000 6769 7785 8800 7692 8846 10000 9231 10615 12000 Vertical offset (mm) 46 57 69 91 114 137 171 229 251 286 343 There is 3% tolerance among these numbers due to optical component variations. BenQ recommends that if you intend to permanently install the projector, you should physically test the projection size and distance using the actual projector in situ before you permanently install it, so as to make allowance for this projector's optical characteristics. This will help you determine the exact mounting position so that it best suits your installation location. 14 Positioning your projector