Meta platforms technologies, llc (20240094809). EYE TRACKING SYSTEM WITH IN- PLANE ILLUMINATION simplified abstract

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EYE TRACKING SYSTEM WITH IN- PLANE ILLUMINATION

Organization Name

meta platforms technologies, llc

Inventor(s)

Qi Zhang of Kirkland WA (US)

Chad Lichtenhan of Vail AZ (US)

Morteza Karami of Renton WA (US)

Kuan Pei Yap of San Jose CA (US)

Mehmet Mutlu of Redmond WA (US)

EYE TRACKING SYSTEM WITH IN- PLANE ILLUMINATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240094809 titled 'EYE TRACKING SYSTEM WITH IN- PLANE ILLUMINATION

Simplified Explanation

The patent application describes an eye tracking system with in-optical-assembly plane illumination using side-emitting light emitting diodes (LEDs) aligned with a plane of an optical assembly of a near-eye display device to illuminate the eye of a user and generate glints for detection by an eye tracking camera. When a corrective optical lens distorts the illumination beams from the LEDs, the distortion is mitigated by using in-package or externally modified LEDs that provide angled beams. Reflectors or labels may be used for in-package level mitigations, and edge portions of the distorting optical elements may be shaped or complemented with refractive elements to redirect the beams toward the eye.

  • Side-emitting LEDs aligned with the optical assembly plane are used for eye illumination and glint generation.
  • Corrective optical elements that distort the LED beams are mitigated using in-package or externally modified LEDs with angled beams.
  • Reflectors or labels may be used for in-package level mitigations, and refractive elements may be used to redirect beams towards the eye.

Potential Applications

This technology can be applied in:

  • Eye tracking systems for virtual reality and augmented reality devices.
  • Biometric security systems for user authentication.

Problems Solved

  • Mitigates distortion of illumination beams caused by corrective optical elements.
  • Improves accuracy and reliability of eye tracking systems.

Benefits

  • Enhanced performance of eye tracking systems.
  • Improved user experience in virtual reality and augmented reality applications.

Potential Commercial Applications

  • Virtual reality headsets.
  • Augmented reality glasses.

Possible Prior Art

There may be prior art related to eye tracking systems using LEDs for eye illumination and glint detection, but specific examples are not provided in the abstract.

Unanswered Questions

How does this technology compare to existing eye tracking systems in terms of accuracy and reliability?

The abstract does not provide a direct comparison with existing eye tracking systems, so it is unclear how this technology stacks up in terms of performance.

What are the potential limitations or challenges in implementing this technology in commercial products?

The abstract does not address any potential limitations or challenges that may arise in integrating this technology into commercial products, leaving room for further exploration in this area.


Original Abstract Submitted

an eye tracking system with in-optical-assembly plane illumination is described. side-emitting light emitting diodes (leds) aligned with a plane of an optical assembly of a near-eye display device are used to illuminate the eye of a user and generate glints that can be detected by an eye tracking camera. when a corrective optical lens or similar element is included in the optical assembly that may distort illumination beams from the light emitting diodes (leds), the distortion is mitigated by using in-package or externally modified leds that provide angled beams. in addition to in-package level mitigations such as reflectors or labels, edge portions of the distorting optical elements may be shaped or complemented with refractive elements to redirect the beams toward the eye.