Meta Platforms. has been granted a patent for an eye tracking system that utilizes side-emitting LEDs to illuminate the eye in near-eye display devices. The system mitigates distortion from corrective lenses by employing angled beams and refractive elements, enabling accurate tracking of eye position and gaze. GlobalData’s report on Meta Platforms gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Meta Platforms, Personalized content delivery was a key innovation area identified from patents. Meta Platforms's grant share as of June 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Eye tracking system with illuminated glints for gaze detection
The patent US12045387B2 describes an advanced eye tracking system designed for integration with near-eye display devices. The system features multiple illuminators that generate glints on the surface of the eye, strategically positioned along a frame that houses an optical assembly. This assembly includes a corrective optical lens, with the illuminators aligned to optimize illumination in relation to the optical plane. An eye tracking camera captures images of the eye, including the glints, while a processor analyzes these images to extract three-dimensional features of the eye's surface, enabling the determination of the eye's position and gaze direction. The illuminators can include various types of light-emitting diodes (LEDs), such as side-emitting or angled-emission LEDs, which may emit visible, infrared, or near-infrared light.
Additionally, the patent outlines the configuration of the near-eye display device, which incorporates the eye tracking system as part of its optical assembly. The illuminators are positioned to ensure that the generated glints remain within the camera's field of view. The optical assembly may also include refractive elements to enhance the directionality of the illumination towards the eye. The method described in the patent involves illuminating the eye, capturing images with the eye tracking camera, and processing these images to determine the eye's three-dimensional features and gaze. This innovative approach aims to improve the accuracy and effectiveness of eye tracking in augmented and virtual reality applications.
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