Facebook Technologies, LLC

Oculus, Vr, LLC

Meta Platforms Technologies, LLC

William Aaron Nicholls

Douglas Robert Lanman

Marina Zannoli

Yusufu Njoni Bamaxam Sulai

Nicholas Daniel Trail

Robert Dale Cavin

Alexander Jobe Fix

Ryan Michael Ebert

Kevin James MacKenzie

James Hillis

Olivier Mercier

Michael Sean Mounier

Tristan Thomas Trutna

Barry David Silverstein

Ian Erkelens

Laura Cristina Trutoiu

Robin Sharma

Aspects of the present disclosure are directed to controlling optical parameters at a user's eye using an artificial reality system and tracked user conditions. For example, based on tracked user eye positioning, implementations can adjust the light that enters the user's eye to control an image shell generated at the user's eye. An image shell refers to the way light, that enters the eye, focuses on the retina of the eye. Example properties of an image shell include image shell centration, image shell curvature, image shell shape, etc. A user may focus on an object in an artificial reality environment (e.g., real-world object or virtual object) and light from the object can generate an image shell at the user's eyes. The image shell at the user's eyes can impact the user's vision and/or eye biology.

Controlling optical parameters at a user's eye

An auto-focus head-mounted display (HMD) dynamically generates aberration-adjusted images based on measured accommodation of user's eye(s). An aberration-adjusted image is an image distorted to correct aberrations that would otherwise occur at a retina of the user due to image light passing through optics of the HMD. The aberration-adjusted image corrects the aberrations of the HMD and 'accounts' for the aberrations of the eye so that the resulting retinal image is free of optical aberrations due to the HMD but preserves correct eye optical aberrations that are correlated with a current accommodative state of the eye.

Accommodation based optical correction

A multiplanar head mounted display (HMD) includes two or more artificial display planes for each eye located at optical distances that can be dynamically adjusted based on a location within a scene presented by the HMD that the user views. For example, a scene is presented on two or more electronic display elements (e.g., screens) of the HMD. A focal length of an optics block that directs image light from the electronic display elements towards the eyes of a user is adjusted using a varifocal system (e.g., an element that mechanically changes a distance between a lens system in the optics block and the electronic display element, an element that changes shape of one or more lenses in the lens system in the optics block, etc.) based on a location or object within the scene where the user is looking.

Focus adjusting multiplanar head mounted display

A virtual reality headset displays a three-dimensional (3D) virtual scene and includes a varifocal element to dynamically adjust a focal length of an optics block included in the virtual reality headset based on a location in the virtual scene where the user is looking. The headset tracks a user's eyes to approximate gaze lines and determines a plane of focus for a frame of the virtual scene as the intersection of the gaze lines. The varifocal element adjusts the focal length of the optics block so the optics block is focused at the plane of focus, which keeps the user's eyes in a zone of comfort as vergence and accommodation change. Based on the plane of focus, the virtual reality headset may provide depth cues, such as depth of field blur, to planes in the virtual scene deeper in the user's field of view than the plane of focus.

Focus adjustment method for a virtual reality headset

Focus adjusting virtual reality headset

A head-mounted display (HMD) device includes a plurality of deformation sensors attached to a liner formed around a periphery of a HMD, adopted for direct or indirect contact a user's face. The deformation sensors measure deformations of the liner caused by movement of an upper portion of a user's face when the user is wearing the HMD. The deformation sensors are strain gauges embedded in or otherwise coupled to the liner of the HMD. The sensors translate muscle movements of the upper face of the user to changes in the bending strain and radius of curvature on the surface of the strain gauges. The HMD includes a module that reconstructs and projects a facial animation model of the user based on signals from the deformation sensors while the HMD is in use by the user.

Headset with strain gauge expression recognition system

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Seattle, WA, United States of America

William Aaron Nicholls