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What’s the Difference Between ALR and CLR Projector Screens?


If you own a projector, you’ve probably heard a lot about ALR and CLR projector screens, which are becoming extremely popular.

However, how do these projector screens work? And what’s the difference between ALR and CLR projector screens?

We have found that the main difference between ALR and CLR projector screens lies in how they reject ambient light. ALR projector screens reflect ambient light away from the audience, while CLR projector screens absorb ambient light. CLR projector screens also specialize in rejecting overhead light.

Why Is Light Rejection Important in Projector Screens?

light rejection screens

If you’ve ever tried using a projector screen before, you probably know it works best when the room is pitch dark.

This is because of ambient light i.e., any light in the room that’s not from the projector. Ambient light can come from light fixtures, sunlight streaming in through windows, or even devices used in the room. 

This ambient light can reflect off of the projector screen and wash out the image, making it blurry or hard to see. 

Before, the answer to this problem was to turn off all the lights and shutter the windows to make the room dark.

But now, thanks to technology, we have light rejection projector screens! 

These screens are specifically designed to reject ambient light so that you can use your projector anywhere, even in brightly lit rooms.

This is incredibly useful, especially in educational settings where students may need the lights on to work while watching the projection.

What Is an ALR Projector Screen?

Before we get into the difference between ALR and CLR projector screens , we need to first understand each type of projector screen.

An ALR projector screen  is an Ambient Light Rejection projector screen. 

Elite Screens Edge Free Ambient Light Rejecting Projector Screen
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Unlike regular projector screens, an Ambient Light Rejection projector screen is a projector screen that’s designed to reflect ambient light in a direction away from the audience.

This works because it is designed to reflect light selectively. 

The light that comes from the projector (typically positioned to hit the center of the screen) is reflected to the audience as much as possible. 

Meanwhile, light from windows, bulbs, and other light sources that are not pointed directly at the center of the projector is reflected away from the audience. 

This results in a clearer and more vivid projection since the ambient light won’t blur or wash out the projected images. 

An ALR projector screen is perfect for rooms where it’s hard to control the amount of ambient light.

However, if the ambient light is coming from the same direction as the projection, it will also be reflected back to the audience. 

How Do You Use an ALR Projector Screen?

To use an Ambient Light Rejection (ALR) projector screen  properly, you need to:

  • Position the projector so that it is perpendicular to the ALR projector screen
  • Minimize the amount of ambient light as much as possible
  • Make sure no ambient light is coming from the same direction as the projector
Elite Screens Sable Frame CineGrey 3D
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What Is a CLR Projector Screen?

A CLR projector screen is a Ceiling Light Rejecting projector screen.

This is a fairly new type of product, and it is being marketed as a projector screen that is similar to the ALR projector screen because it can decrease the washing out of a projection due to ambient light. Thus, it works well even in well-lit rooms.

However, the Ceiling Light Rejecting projector screen’s name tells us that it has a specialty that the ALR projector screen doesn’t have.

A CLR projector screen is specially designed to absorb 95% of the lighting above. This is accomplished through its serriform structure, which negates overhead lighting.

It is also designed to absorb ambient light in general, as long as it doesn’t come from the same direction as the projector.

Because it absorbs ambient light, it has contrast levels that are exponentially higher than standard projector screens, resulting in vivid and clear images.

Elite Screens Aeon CLR 3 Series
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How Do You Use a CLR Projector Screen?

To use a CLR projector screen, you need to:

  • Position the projector so that it is centered and perpendicular to the screen
  • Minimize ambient light and make sure none is coming from the direction of the projector

What’s the Difference Between ALR and CLR Projector Screens?

So what’s the difference between ALR and CLR projector screens ? After all, they both reject ambient light, so aren’t they the same?

Akia Screens CLR & ALR Projector Screen 103 inch
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Yes and no. 

While it’s true that they both reject ambient light, what truly makes them different is how they do it.

As stated above, an ALR projector screen rejects ambient light by reflecting it away from the audience. This occurs because its material is designed to reflect any light at an angle different from that of the projector.

Meanwhile, a CLR projector screen rejects ambient light by absorbing it. This occurs because its material has a serriform structure which is efficient at absorbing light at angles different from that of the projector’s.

Elite Screens AEON CLR Projection Screen Review

A CLR projector screen is also different from an ALR projector screen because it specializes in rejecting light from above. However, it is still efficient at rejecting ambient light from other directions.

Conclusion

Light rejection is important in projector screens because it negates the effect of ambient light and lets you use projectors in well-lit rooms.

An ALR projector screen is an Ambient Light Rejection projector screen that reflects ambient light away from the audience.

To use an ALR projector screen, position the projector, so it’s perpendicular to the screen.

A CLR projector screen is a Ceiling Light Rejecting projector screen that absorbs ambient light, especially overhead lighting.

To use a CLR projector screen, position the projector, so it’s centered and perpendicular to the screen.

The main difference between ALR and CLR projector screens is how they reject ambient light and what ambient light they specialize in.

We hope this article helped you!

Last update on 2022-08-15 / Affiliate links / Images from Amazon Product Advertising API.


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