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MetaGranted patentAR, VR & displaysInterest 6/10

Meta patents lens design that blocks stray light for clearer AR glasses

Patent drawing
Patent drawing from the official filing.

Meta has been granted a patent for a compact lens system used in augmented reality displays. It uses a special filter that absorbs unwanted light in the center of the lens to make the virtual image stand out more clearly against the real world.

Why it mattersThis design could help make future AR glasses look less like a foggy window and more like a clear overlay, improving visibility in bright environments.

In the filing’s own words

A device may include an optical system that creates an image to a user and a light-absorbing element that absorbs a portion of the light transmitted by the optical system. The optical system may include a beamsplitting element and a reflective polarizer that reflects a first handedness of circularly polarized light and transmits a second handedness of polarized light. Various other devices, systems, and methods of manufacture are also disclosed.

What exactly they claim (claim 1)

1. A device comprising: an optical system that creates an image to a user, wherein the optical system comprises: a beamsplitting element; and a reflective polarizer that reflects a first handedness of circularly polarized light and transmits a second handedness of polarized light; and a light-absorbing element absorbs a portion of the light transmitted by the optical system, wherein the light-absorbing element has a higher absorptivity of the light at a center of the light-absorbing element than at 50% of an outer radius of an edge by at least 10%.

Facts

Company
Meta (Meta Platforms Technologies, LLC)
Official title
High-contrast pancake lens with pass-polarization absorber
Patent number
US12754423B2
Application number
18420128
Filed
Jan 23, 2024
Granted
Oct 6, 2026
Inventors
4
Claims
20

Classified under

G02B 27/0172 Physics & computingG02B 5/003 Physics & computingG02B 5/3058 Physics & computingG02B 5/3083 Physics & computingG02B 2027/0178 Physics & computing

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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.