Angles of Reflection is a series of articles written by Da-Lite which reviews the best practices for designing and specifying visual displays coupled with application basics for today's challenging system designs.

In September 2009, Adam Teevan wrote an article that reviews the fundamental concepts of screen gain. In this article, Adam discusses:

Gain, defined
Formulas used to calculate and represent gain
How screens are designed to increase gain
How gain is measured
Interpreting measurements

Here's a summary of this issue of Angles of Reflection:

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It is considered by many to be the single most important parameter in a projection screen’s specifications, and so it should come as no surprise that gain has been covered many times in many ways. Given its position in the minds of those interested in screens, it is important that the concept of gain is well understood. What is it? What does it do? How can it be used to enhance a display?

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