Optoma UHD60 Projection Calculator - Throw Distance and Screen Size
Optoma Announces UHD60 & UHD65 4K Projectors, starting at under $2,000
Optoma: Distance calculator
Amazon.com: Optoma DH1012 Full 3D 1080p 3200 Lumen DLP Multimedia Projector with MHL Enabled HDMI Port, 18,000:1 Contrast Ratio and 8,000 Hour Lamp Life : Electronics
Optoma UHD60 Review: A 4K Projector for Less Than $2,000 | WIRED