Da-lite Parallax Stratos 1.0 Ambient Light Rejecting Surface ALR

Da-lite has just announced the release of their latest ambient light rejecting surface, the Parallax Stratos 1.0.

This is a vinyl, rollable, contrast based ALR surface, different than their Parallax Pure (0.8 & 2.3) screen surfaces.

What does that mean? This is what Da-lite has to say:

What is Contrast Based ALR?
Gray projection screens increase image contrast, particularly in a room that is not completely dark. These are also known as Contrast Based Ambient Light Rejecting screens. The gray color of the screen absorbs some of the ambient light rather than reflecting it. The same image in that space might appear washed out on a white screen, whereas the gray screen maintains and enhances contrast for viewers. Contrast Based ALR screens are single layer surfaces.

Parallax Pure
Parallax Pure are True Optical ALR surfaces available in gains of 0.8 and 2.3 for standard throw projectors and UST 0.45 for ultra short throw projectors. They reject up to 96% of ambient light, providing flat panel quality images up to 120” diagonal but without the glare and reflection of flat panels. When image quality is critical in high ambient light areas, Parallax Pure is the best solution.

What is True Optical ALR?
True Optical Ambient Light Rejecting screens are specifically designed to reject higher levels of ambient light from specific angles in a room. This makes the image brighter than Contrast Based ALR. Light in the room is not reflected in the image, preserving contrast, color saturation and dynamic range.

True Optical ALR screens consist of a series of optical layers rather than a single layer like Contrast Based ALR screens. There is a highly reflective base layer. On top of that a micro-layered optical lens surface absorbs light. This optical lens surface is itself made of two layers. One special layer is shaped like a microscopic saw-tooth that blocks light from above, and the second is a diffusion layer that filters out off-axis lighting.

This results in high-contrast, bright images in well-lit environments. However, one drawback of this complex surface structure is that screen size is limited to 120” diagonal in 16:9 fixed frame and electric products.

da-lite parallax ALR

Illustration of the microscopic saw-tooth layer that blocks light from above in Parallax Pure surfaces.

To recap:

Parallax Pure 0.8, 2.3 & UST 0.45 = True Optical ALR

Select Parallax Pure when…

  • The most ambient light rejection is needed in an installation
  • Sizes are up to 120” diagonal in 16:9
  • Image quality and resolution are critical
  • A variety of gain types may be needed to accommodate projector models or lenses

*Parallax Stratos 1.0 = Contrast Based ALR

Select Parallax Stratos when…

  • High ambient light rejection is needed in installations
  • Sizes are larger than 120” diagonal in 16:9
  • Image quality and resolution are important, but not critical
  • A single surface solution with a variety of product types can solve the basic ambient light rejection needs of the project

The Parallax Stratos 1.0 Product Description per Da-lite's website:

Parallax® Stratos 1.0 is a Contrast Based, 80% ALR surface engineered for high value, large scale projects. 

This surface is available up to 16' H in a variety of products, including Da-Lite’s core lineup of electric screens and fixed frames to expand your product portfolio and installation applications. 

Appropriate for standard throw projection (1.0:1 or greater). 

Parallax Stratos 1.0 can be gently cleaned with water, and is mildew resistant. 

Horizontal Half Angle: 30º 

Vertical Half Angle: 30º 

Ambient Light Rejection: 80%

Da-lite Parallax Stratos 1.0 Ambient Light Rejecting Surface ALR

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