There’s an InfoComm/ANSI standard known as PISCR that every integrator should be familiar with. Why?
The PISCR standard provides metrics for measurement and requirements for minimum contrast ratios for rear and front projection audiovisual projected image systems — but, it’s application based; not projection device based.
This standard applies to both permanent and temporary installations, defines projected image system contrast ratio and its measurement. This standard defines four contrast ratios based on content viewing requirements: Passive Viewing, Basic Decision Making, Analytical Decision Making and Full Motion Video. The system contrast ratio refers to the image as it is presented to viewers in a space with ambient light. Metrics to measure and validate the defined contrast ratios are also provided.
The standard puts the needs of the viewer ahead of all other considerations. Its requirements move beyond individual performance factors of a projector and a screen, because the contrast ratio they can deliver is ultimately affected by the light in the space.
Well, dnp was founded as the projection screen industry’s first screen manufacturer focused on ambient light rejection — throwing away light that’s pointed at the screen that’s not supposed to be (e.g. non-projected light) — like the overhead lights in a room. With their screens, you can integrate them into rooms and environments and install them such that they actually absorb as much as 90% of the ambient light in a room and only reflect projected light. That means you get an increased contrast ratio for the room. Thus, dnp screens help you meet the PISCR standard.
I shot a video today — when no one was in the dnp booth, to demonstrate this and explain how it works. Here’s the video.