MetaPatent applicationHealth & bodyInterest 6/10

Meta patents skin sensor that uses polarized light for health checks

Patent drawing from the official filing.

Meta has filed a patent for a device that shines light on a person's skin and analyzes how that light reflects back. By using a filter to separate the light that bounces straight off the surface from the light that penetrates deeper, the system can measure biometric data.

Why it mattersThis technology could improve how wearable devices like smartwatches monitor vital signs by filtering out surface glare for more accurate readings.

In the filing’s own words

The disclosed method may include capturing a light reflected from a skin and detecting a polarized light signal from the captured reflected light. The method may also include analyzing the detected polarized light signal, detecting a specular light component and/or a diffused light component from the polarized light signal, and determining a biometric measurement based on the analyzing the specular light component and/or the diffused light component. Various other methods, systems, and computer-readable media are also disclosed.

What exactly they claim (claim 1)

1. A device comprising: an optical sensor comprising a polarizer, wherein the optical sensor is configured to: capture a polarized light from a skin; detect a diffused light component from the captured polarized light using the polarizer; and perform a biometric measurement based on the detected diffused light component.

Facts

Company: Meta (Meta Platforms Technologies, LLC)
Official title: POLARIZATION SENSITIVE BIOMETRIC MONITORING
Publication number: US20260305947A1
Application number: 19569332
Filed: Mar 17, 2026
Published: Oct 8, 2026
Inventors: 2
Claims: 20

Classified under

A61B 5/0059 Human necessitiesA61B 5/6803 Human necessitiesA61B 5/7278 Human necessities

Read the full filing (official PDF) ↗ Open in the Patent Tracker

More from Meta in Health & body

Meta patents wristwatch tech to estimate blood pressure Oct 20, 2026
Meta patents system to guide users in making muscle-based gestures Oct 1, 2026

Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.