A great cinematic experience depends on more than just projector quality it demands a screen that delivers consistent brightness and color uniformity across every seat.

Cumulative Gain is Galalite’s proprietary approach to measuring and ensuring this uniformity. Powered by Lensray™ Technology, which uses an advanced microlens array to optimize light diffusion, our 9-point Cumulative Gain Unit (CGU) testing system provides a complete picture of how a screen performs—not just at the center but across its entire surface.

This helps cinema owners eliminate hotspots, achieve wider viewing angles, and offer audiences an immersive, distraction-free experience.

Most screens measure gain from the point of maximum brightness directly in front of the screen at a zero-degree viewing angle. But what happens when viewers aren’t seated dead center?

As audiences move to the sides, the brightness of the projected image begins to fade. At certain angles, screen brightness can drop by up to 50%, leading to dull, uneven visuals for corner seats.

This creates a dramatically different experience for viewers across the auditorium. With Galalite’s Cumulative Gain Unit (CGU) system, powered by Lensray™, we solve this by evaluating screen performance across nine points, ensuring every seat gets the same stunning visuals.