Abstract: Examples of synchronization of a gyroscope in a virtual-reality (VR) environment are described. In some examples, gyroscopic feedback for VR application content may be predicted. In some examples, a time shift corresponding to a physical system lag of a gyroscope may be added to synchronize the gyroscopic feedback with the VR application content. In some examples, the gyroscopic feedback may be applied based on the time shift.

Abstract: Examples of synchronization of a gyroscope in a virtual-reality (VR) environment are described. In some examples, gyroscopic feedback for VR application content may be predicted. In some examples, a time shift corresponding to a physical system lag of a gyroscope may be added to synchronize the gyroscopic feedback with the VR application content. In some examples, the gyroscopic feedback may be applied based on the time shift.

Abstract: In example implementations, a display is provided. The display includes a camera, a communication interface, and a processor. The camera is to capture a first image of a head-mounted device (HMD) wearable by a user. The communication interface is to receive pupil data from the HMD. The processor is communicatively coupled to the camera and the wireless communication interface. The processor is to determine abound of a field-of-view based on the first image of the HMD, track an eye of the user based on the field-of-view and the pupil data to determine a location of focus of the user, and move a second image to the location of focus on the display.

Abstract: In an example, a gyroscope device may include a control rotor to spin about a central axis and a reaction wheel to spin about the central axis, independent of the control rotor. An example gyroscope device may also include an actuator to change the orientation of the control rotor.

Abstract: An example display system includes a brightness engine, a pupil engine, and an adjuster engine. The brightness engine identifies a brightness range and the pupil engine identifies a pupil size property. The adjuster engine modifies a display property based on an adjustment to the brightness range based on the pupil size property. In another example, executable instructions cause identification of a brightness level within a range corresponding to a tolerance of pupil constriction and cause adjustment of a display property when the display brightness level is expected to exceed the pupil constriction tolerance. In an example method, a brightness range is identified that corresponds to a maximum constriction and maximum dilation of a pupil, content data that exceeds the brightness range is identified, and a display is caused to present the content data within the brightness range.

Abstract: In an example, a lens cap may include a cover sized to overlay and/or conceal or cover an eye lens of a head-mounted display. The lens cap may further include a dual hinge to move the cover between an open position and a closed position. The dual hinge may include a first hinge attached to or disposed on the cover, and a second hinge to attach to a chassis of the head-mounted display.