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FOR YOUR IMAGE | legrandav.com <br />USA P 866.977.3901 E info@da-lite.com <br />CANADA P 877.345.4329 E canadainfo@milestone.com <br />EMEA P +31 495 580 840 E emea.sales@milestone.com <br />APAC P +852 2145 4099 E asia.da-lite@milestone.com <br />In British Columbia, Milestone AV Technologies ULC carries on business as MAVT Milestone AV Technologies ULC. <br />©2018 Milestone AV Technologies. DL–0415 (Rev. 4) 8/18 Da-Lite is a registered trademark of Milestone AV <br />Technologies. All other brand names or marks are used for identification purposes and are trademarks of <br />their respective owners. All patents are protected under existing designations. Other patents pending. Commercial AV Brands Chief | Da-Lite | Middle Atlantic | Projecta | Vaddio <br />MILESTONE IS NOW LEGRAND <br />Parallax 0.8 Projector Placement <br />• Parallax 0.8 requires a minimum Lens Throw Ratio of 1.5:1 <br />• How to calculate Projection Distance (x): <br /> Projection Distance = Screen Width (viewable) x Lens Throw Ratio <br /> Example: <br /> 180" projection distance ÷ 96" wide screen = 1.88 (1.88:1 Lens Throw Ratio) <br />• How to calculate Lens Throw Ratio: <br /> Lens Throw Ratio = Projection Distance ÷ Screen Width (viewable) <br /> Example: <br /> 87" wide screen x 1.5 (minimum lens throw ratio) = 130.5 (130.5" projection <br />distance) <br />x <br />Projector Distance Projection Angle <br />y <br />x <br />25° <br />• If the Projection Distance (x) is known, find the Maximum Vertical Offset: <br /> Maximum Vertical Offset (y) = 0.4 x Projection Distance (x) <br /> Example: <br /> Projection Distance (x) = 130.5" <br /> 130.5" x 0.4 = 52.2" <br /> 52.2" = Maximum Vertical Offset <br />• If the Vertical Offset (y) is known, find the Minimum Projection Distance: <br /> Minimum Projection Distance (x) = 2.5 x Vertical Offset (y) <br /> Example: <br /> 87" wide screen with a 60" Vertical Offset (y) <br /> 60" x 2.5 = 150" <br /> 150" = Minimum Projection Distance <br />The examples below are for a ceiling mounted projector, but can be reversed for a table-top projector.