Size your screen.
Two dimensions. Your two-coat paint estimate.
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Two dimensions. Your two-coat paint estimate.
Estimate brightness at your reference gain.
Your product documents, guides and certificates.
Open Product PassportViewing geometry. Screen elevation. Gain at every position.
Distances start at the screen plane. Fan rows follow an arc; seat spacing and aisle apply to straight rows. Presets are editable starting points.
Move projector distance, offset or lens height to change incidence. Angle-reflective and retroreflective modes shift the assumed gain lobe. These are comparison models, not measured coating behavior.
Half-gain is the one-sided angle at 50% of peak. Published viewing cones are shown for reference and are not automatically treated as half-gain measurements. Default assumptions: ±45° horizontal / ±30° vertical.
Flat, vertical screens only. Angles are measured from the screen center; eye height includes row risers. The normal-centered mode places peak gain on the screen normal. Angle-reflective mode mirrors the projector direction across the normal; retroreflective mode points back toward the projector. A smooth angular falloff is applied around the chosen lobe axis: gain = peak × 2−[(horizontal / H)² + (vertical / V)²]. H and V are your assumed half-gain angles. Screen-edge gain is sampled at the corners, edge midpoints and center.
This is a planning model, not a measured product gain report. Projector-to-screen incidence and ideal reflection directions are geometric. Reflection-mode falloff is assumed; the model excludes measured ALR directionality, curved screens, obstructions, irradiance nonuniformity and real installation losses. Do not use it to predict UST/ALR performance. Changing screen size changes image angles and edge estimates; center gain depends on the seat angle and assumed curve.
Talk with our team about your projection project.