Facebook Technologies, LLC

Meta Platforms Technologies, LLC

Microsoft Technology Licensing, LLC

Mohamed Hegazy

Sebastian Sztuk

Alexander Jobe Fix

Javier San Agustin Lopez

Scott Robert Ramsby

Dmitri Model

Mohammadhossein Daraeihajitooei

Andrew Wyman MacDonald

Kirk Erik Burgess

Robert Dale Cavin

Charles P Jazdzewski

Thomas Scott Murdison

Evan Gander

Jordan L Matthiesen

Mohammadhossein Daraeihajitooel

A disclosed computer-implemented method may include directing a display device included in a head-mounted display worn by a user to illuminate, via a projection of a line at an illumination time, a portion of a cornea of the user. The method may further include detecting, via an image sensor at a detection time, a portion of the projection of the line reflected by the portion of the cornea of the user and identifying a distortion of the projection of the line reflected by the portion of the cornea of the user. The method may also include determining a shape of the cornea of the user based on the illumination time, the detection time, and the distortion of the projection of the line reflected by the portion of the cornea. Various other methods, systems, apparatuses, and computer-readable media are also disclosed.

Apparatuses, systems, and methods for mapping corneal curvature

The disclosed eye-tracking systems may include a visible light display having visible light pixels, at least one infrared pixel positioned within bounds of the visible light display, and an infrared sensor positioned and configured to detect infrared light originating from the at least one infrared pixel and reflected from an eye of the user. Related head-mounted display systems and methods for eye tracking are also disclosed.

Systems and methods for using a display as an illumination source for eye tracking

A disclosed computer-implemented method may include directing an illumination source, positioned at a predetermined position relative to an event camera positioned to receive light from the illumination source reflected by a portion of a cornea of a user during an illumination sequence, to illuminate the portion of the cornea of the user in accordance with the illumination sequence. The method may also include detecting, via the event camera, a set of events, each event in the set of events comprising a change in an intensity of light from the illumination source received by a pixel included in the event camera over a sampling period of the event camera. The method may further include determining a shape of the portion of the cornea of the user based on the predetermined position, the illumination sequence, and the set of events. Various other apparatuses, systems, methods, and computer-readable media are also disclosed.

Apparatuses, systems, and methods for mapping a surface of an eye via an event camera

A disclosed apparatus may include a line source configured to produce a line of light and a scanning device configured to scan the line of light across a scanning field in a scanning direction. The scanning field may include a receiving portion configured to receive an eye. The apparatus may also include a reflector positioned within the scanning field. During a primary period of a scan, the line of light may scan the receiving portion in a primary direction. During a secondary period of the scan, the reflector may reflect the line of light such that a reflection of the line of light scans the receiving portion in a secondary direction. The apparatus may also include a photodetector positioned to receive (1) an initial reflection during the primary period, and (2) a subsequent reflection during the secondary period. Various other methods, apparatuses, and computer-readable media are also disclosed.

Apparatuses, systems, and methods for scanning an eye via a folding mirror

Structure of a prototype-based programming language program is determined based on results of program execution. The structure determined can be implied by a program rather than explicitly declared. For example, classes and namespaces of a prototype-based program can be detected or inferred by identifying patterns that indicate the presence of a class or namespace. Furthermore, members of classes and namespaces can also be determined.

Class and namespace discovery in prototype based language

Growing community of inventors

Sammamish, WA, United States of America

Mohamed Hegazy