Abstract: An electronic device may have a display panel with an array of display pixels. Light from the display panel may be focused by a lens assembly towards a viewer. The presence of the lens assembly may cause geometric distortion for a viewer viewing images on the display through the lens assembly. To mitigate geometric distortion, geometric distortion compensation may be performed in the electronic device. The electronic device may include both a fixed lens element and a removable lens element in the lens assembly. The removable lens element may be changed, allowing the distortion function associated with the lens assembly to change over time. To dynamically compensate for geometric distortion caused by a lens assembly with a removable lens, ray tracing may be used to determine the geometric distortion caused by the lens assembly depending upon the particular removable lens that is present in the lens assembly.

Abstract: A surface material on one or more optical components of an optical sensing system can be detected. In some embodiments, a method of detection includes generating a first image using the optical sensing system. In accordance with a determination that one or more criteria are satisfied, the one or more criteria including a criterion that is satisfied when a proportion of the first image having an intensity of light in a first intensity range is greater than a threshold, a surface material is detected on the first attachable lens.

Abstract: A system can perform a method to identify when one or more lenses are the wrong prescription for the user. In some embodiments, the system notifies the user to switch prescription lenses or initiates an enrollment process for the lenses. In some embodiments, the system can identify the prescription of a lens and compare the identified prescription to one or more enrolled prescriptions for the user (e.g., previously defined in user settings associated with user profile). When the identified prescription of the lens does not match an expected enrolled prescription for the user), the system can notify the user to switch prescription lenses. When there are no enrolled prescriptions for the user, the device can prompt the user to enroll the lens.

Abstract: Systems and methods for eye enrollment for a head-mounted enclosure are described. Some implementations may include an image sensor; and a processing apparatus configured to: access a set of images, captured using the image sensor, that depict a face of a user and a head-mounted enclosure that the user is wearing; and determine, based on the set of images, a first position of a first eye of the user relative to the head-mounted enclosure.

Abstract: Aspects of the disclosed apparatuses, methods and systems provide tethering 3-D virtual elements in digital content, extracting tethering 3-D virtual elements, and manipulating the extracted 3-D virtual elements in a virtual 3-D space.

Abstract: Systems and methods for eye enrollment for a head-mounted enclosure are described. Some implementations may include an image sensor; and a processing apparatus configured to: access a set of images, captured using the image sensor, that depict a face of a user and a head-mounted enclosure that the user is wearing; and determine, based on the set of images, a first position of a first eye of the user relative to the head-mounted enclosure.

Abstract: Aspects of the disclosed apparatuses, methods and systems provide tethering 3-D virtual elements in digital content, extracting tethering 3-D virtual elements, and manipulating the extracted 3-D virtual elements in a virtual 3-D space.