User eye-tracking method and contact lenses
The contact lens with a multilayer optical structure enhances eye-tracking accuracy and intraocular pressure measurement by forming stereoscopic images, addressing the complexity and cost issues of existing methods.
JP2026522192APending Publication Date: 2026-07-07XPANCEO RESEARCH ON NATURAL SCIENCE LLC
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- XPANCEO RESEARCH ON NATURAL SCIENCE LLC
- Filing Date
- 2024-04-25
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing eye-tracking methods for augmented reality and virtual reality systems are complex, costly, and lack accuracy in determining the position of the user's eye relative to the camera, and they do not effectively measure intraocular pressure.
Method used
A contact lens with a multilayer optical structure that forms a stereoscopic image, using holograms or autostereograms, to determine the position of the user's eye by analyzing the angular position of the image and surface normals, and incorporates segments to measure intraocular pressure.
Benefits of technology
Improves the accuracy of eye position measurement and enables high-precision determination of the contact lens shape, allowing for dynamic intraocular pressure measurement.
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Smart Images
Figure 2026522192000001_ABST
Abstract
The present invention relates to a method for tracking a user's gaze and can be used in AR / VR / MR / XR generating systems. According to the user's gaze tracking method, a camera monitors the user's eyes, and a contact lens containing an optical structure that forms a stereoscopic image is placed on the user's eye. The position of the user's eye is determined from the linear dimension and angular position of this image relative to the camera. This optical structure can be implemented as an autostereogram and a decoded slit raster, where the autostereogram is formed by reflecting the slit raster off a mirror coating or by the shadow projected by the slit raster onto a diffuse reflection coating. The optical structure can be formed by a real image or a hologram. The present invention makes it possible to improve the accuracy when measuring the position of the contact lens, and therefore the user's eye.
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