Facebook Technologies, LLC

Meta Platforms Technologies, LLC

Alexander Randon Cope

Qi Zhang

Karol Constantine Hatzilias

Robin Sharma

Kurt Jenkins

Maik Andre Scheller

Christopher Yuan-Ting Liao

Joseph S Corry

An optical element includes a glass substrate layer and an optical plastic layer. The optical plastic layer has a planar surface. A prescription surface may be formed in the optical plastic layer opposite the planar surface.

Hybrid plastic-glass lens

An illuminator includes a semiconductor emitter chip, e.g. a VCSEL chip, configured for emitting a light beam. A polarization-selective element is optically coupled to the semiconductor emitter chip for defining a polarization state of the emitted light beam. A beam redirecting optic is coupled to the polarization-selective element for receiving and at least one of collimating or redirecting the emitted light beam. The polarization-selective element, e.g. a polarization-selective optical feedback element for VCSEL, defines a polarization state of the emitted light beam, thereby stabilizing output optical power of light beam propagated through the beam redirecting optic. A light beam of a constant optical power and a well-defined polarization state may be used as an illumination source for an eye-tracking system.

Polarization-stabilized beam-shaping illuminator

A near-eye optical element, according to aspects herein, includes an illumination layer, an optical combiner layer, and an infrared absorber layer. The illumination layer includes infrared light sources configured to direct narrow-band infrared illumination light to an eyeward side of the near-eye optical element for eye tracking. The optical combiner layer is configured to receive reflected infrared light of the narrow-band infrared illumination light that is reflected off an eye of a user and to direct the reflected infrared light to a camera to generate an eye-tracking image. The infrared absorber layer is disposed between the optical combiner layer and a backside of the near-eye optical element to absorb infrared interference light of the narrow-band.

Infrared light suppression in eye-tracking imaging

Growing community of inventors

Seattle, WA, United States of America

Alexander Randon Cope