ALR vs white vs gray
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Pillar guide
Long Throw ALR Projector Screen Guide
A long-throw ALR screen is designed to send useful projector light toward the audience while reducing the impact of stray light arriving from other directions.
What “ALR” actually means
Ambient light rejecting does not mean a screen magically blocks all room light. It means the surface is engineered to favor light arriving from the projector's expected direction and reduce light coming from less useful angles. The design can improve perceived contrast when lamps, windows or bright walls would otherwise wash out the image.
Long-throw ALR is not the same as UST ALR
This is the most important compatibility point in the category. A UST projector sends light upward from very close to the screen. A conventional standard/long-throw projector sends light from much farther away. Screen structures that are optimized for one geometry can behave badly with the other.
Good ALR use case
A bright standard projector in a living room where you can reduce, but not eliminate, ambient light.
Weak ALR use case
A dim projector, direct sun hitting the screen and a huge image size that spreads limited light too thin.
Five variables to match
- Throw type: standard/long throw versus short throw versus UST.
- Projector brightness: enough output for the screen size and gain.
- Room light direction: windows and ceiling fixtures can matter differently depending on the screen structure.
- Screen gain: a brightness distribution characteristic, not a quality score.
- Seating layout: some directional screens trade gain for viewing-angle flexibility.
Where the NothingProjector screen fits
The featured NothingProjector screen is explicitly sold for standard/long-throw projectors. Its published specifications include 0.8 gain, 170° viewing angle and 100/120/130-inch size choices. NothingProjector also recommends 2,000 ANSI lumens or more. Those numbers make it a sensible product to investigate when room light is the problem but a conventional projector remains the source.
ALR does not replace room design
Even a strong ALR surface benefits from blinds, controlled lamp placement and darker surfaces near the screen. The practical goal is not “daylight immunity.” It is to improve the signal-to-stray-light relationship so the projected image holds more contrast in normal living conditions.
Want a screen designed for conventional projector placement?
Check the current NothingProjector listing for size, shipping, price and final compatibility details.
Check Current Price & AvailabilityFrequently asked questions
Can I use a UST ALR screen with a long-throw projector?
Usually that is the wrong match. Directional UST/CLR material is designed around a very different light angle.
Does ALR make a projector work in direct sunlight?
Do not plan around that. Direct sunlight is far more challenging than normal indoor ambient light.
Is higher gain always better?
No. Gain is a tradeoff involving brightness distribution, viewing angle and screen behavior; it is not a simple quality ranking.