Abstract: In an example implementation, a head-mounted display (HMD) device includes a display, a variable lens receptacle to receive an interchangeable lens, a sensor to retrieve lens information from the lens, and a controller to obtain images that are predistorted according to the lens information, wherein the controller is to display the predistorted images on the display.

Abstract: An example system includes a strap, a display, a plurality of haptic devices, and a notification engine to cause activation of a haptic device in response to a virtual event that exceeds the view boundary. In an example, instructions may cause a processor to map a relative location of a virtual event to a corresponding location on a strap of an electronic device and cause activation of a haptic device at the corresponding location on the strap in response to a determination that the relative location of the virtual event exceeds a view boundary. In an example method for providing a virtual reality session, a virtual event is determined to correspond to an informational notification, a haptic device is identified to correspond to a location of the virtual event, and activation of the haptic device in an informational notification mode is synchronized with the virtual event.

Abstract: In an example implementation, a head-mounted display (HMD) device includes a display, a variable lens receptacle to receive an interchangeable lens, a sensor to retrieve lens information from the lens, and a controller to obtain images that are predistorted according to the lens information, wherein the controller is to display the predistorted images on the display.

Abstract: In various examples, a plurality of reference points may be generated by processing an image of an eye of a user from a vision sensor. The plurality of reference points may correspond to, for example, a boundary between a sclera of the eye and an eyelid of the user, a boundary between a pupil and a cornea, etc. Based on the reference points corresponding to the boundary between the sclera and the eyelid, a measure of the eye of the user may be detected.

Abstract: An example system includes a strap, a display, a plurality of haptic devices, and a notification engine to cause activation of a haptic device in response to a virtual event that exceeds the view boundary. In an example, instructions may cause a processor to map a relative location of a virtual event to a corresponding location on a strap of an electronic device and cause activation of a haptic device at the corresponding location on the strap in response to a determination that the relative location of the virtual event exceeds a view boundary. In an example method for providing a virtual reality session, a virtual event is determined to correspond to an informational notification, a haptic device is identified to correspond to a location of the virtual event, and activation of the haptic device in an informational notification mode is synchronized with the virtual event.

Abstract: In various examples, a plurality of reference points may be generated by processing an image of an eye of a user from a vision sensor. The plurality of reference points may correspond to, for example, a boundary between a sclera of the eye and an eyelid of the user, a boundary between a pupil and a cornea, etc. Based on the reference points corresponding to the boundary between the sclera and the eyelid, a measure of the eye of the user may be detected.

Abstract: Described herein is a head-mounted device including an audio system configured to provide a surround sound audio effect. The device may include one or more of a forehead assembly, a rear-head assembly, a set of speakers, a set of straps connecting the forehead assembly to the read-head assembly, and/or other components. The forehead assembly may include one or more speakers. Individual ones of the straps may include one or more speakers.

Abstract: Described herein is a head-mounted device including an audio system configured to provide a surround sound audio effect. The device may include one or more of a forehead assembly, a rear-head assembly, a set of speakers, a set of straps connecting the forehead assembly to the read-head assembly, and/or other components. The forehead assembly may include one or more speakers. Individual ones of the straps may include one or more speakers.

Abstract: Described herein is a head-mounted device including an audio system configured to provide a surround sound audio effect. The device may include one or more of a forehead assembly, a rear-head assembly, a set of speakers, a set of straps connecting the forehead assembly to the read-head assembly, and/or other components. The forehead assembly may include one or more speakers. Individual ones of the straps may include one or more speakers.