Possible Applications

The future of augmented reality

  • A Bragg polarization grating (BPG) is an optically “thick” grating that follows (2-4um)
  • Bragg PGs are analogous to Volume Phase Holograms and Volume Bragg Gratings
Image of BPG equation

How It Works

BPGBPGs are a special case of polarization gratings that operate in the Bragg regime or Q>1. It has several unique properties that make it ideal for several applications including augmented and virtual reality. When operating in the Bragg regime, a polarization grating will diffract only a single polarization (+1st order) and leave the orthogonal polarization un-diffracted. With a circularly polarized input, the efficiency can reach up to 99%. For very wide field of views, the efficiency can be as high as 90%.

bragg polarization

White Papers about BPGs

Technology Comparison

Traditional Grating

  • 20 Degree Field of View
  • 40% Grating Efficiency
  • > 100um Thickness

ImagineOptix BPG

  • 60 Degree Field of View
  • 99% Grating Efficiency
  • 2um Thickness

Click here for Technical Details including Specification and Benefits of our BPGs.

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