Apple inc. (20240103273). Waveguide Display with Gaze Tracking simplified abstract

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Waveguide Display with Gaze Tracking

Organization Name

apple inc.

Inventor(s)

Francesco Aieta of Alameda CA (US)

Byron R. Cocilovo of Boulder CO (US)

Jonathan B. Pfeiffer of Lafayette CO (US)

Se Baek Oh of Hillsborough CA (US)

Waveguide Display with Gaze Tracking - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240103273 titled 'Waveguide Display with Gaze Tracking

Simplified Explanation

The patent application describes a display system with a waveguide that includes an input coupler, an output coupler, and a surface relief grating for infrared light. The surface relief grating can also act as a cross-coupler for image light and may direct reflected infrared light towards an infrared sensor for gaze tracking operations.

  • Waveguide display system with input and output couplers
  • Surface relief grating for coupling infrared light and image light
  • Infrared sensor for gathering sensor data based on reflected infrared light
  • Control circuitry for performing gaze tracking operations
  • Potential Applications:
 - Augmented reality displays
 - Eye-tracking systems
  • Problems Solved:
 - Efficiently coupling and directing light within a display system
 - Enabling gaze tracking functionality
  • Benefits:
 - Improved user experience in augmented reality applications
 - Enhanced accuracy in eye-tracking technology
  • Potential Commercial Applications:
 - AR headsets
 - Eye-tracking devices for research or gaming
      1. Possible Prior Art

One potential prior art for this technology could be the use of surface relief gratings in optical systems for light manipulation and control. Another could be the integration of infrared sensors in display devices for various applications.

      1. Unanswered Questions
        1. How does the surface relief grating enhance the performance of the display system?

The surface relief grating helps to efficiently couple and direct both infrared and image light within the waveguide, improving overall system functionality.

        1. What are the specific applications where gaze tracking based on reflected infrared light could be most beneficial?

Gaze tracking based on reflected infrared light could be particularly useful in applications such as virtual reality gaming, medical research, and human-computer interaction studies.


Original Abstract Submitted

a display may include a waveguide. an input coupler may couple image light into the waveguide and an output coupler may couple the image light out of the waveguide. a surface relief grating on the waveguide may couple infrared light into the waveguide and may couple the infrared light out of the waveguide. the surface relief grating may additionally or alternatively couple reflected infrared light into the waveguide and out of the waveguide and towards an infrared sensor. the surface relief grating may also form a cross-coupler for the image light. the infrared sensor may gather infrared sensor data based on the reflected infrared light. control circuitry may perform gaze tracking operations based on the infrared sensor data. the input and output couplers may also be formed from surface relief gratings or may include other optical components.

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