Abstract: Technology is provided for restraint systems for use with head mounted displays and head mounted displays incorporating the same. The head mounted display includes a display unit including a display housing and one or more display devices. A retention assembly attaches to the display unit to support the unit on a user's head. The retention assembly includes at least one tensioner mechanism including a housing having an anchor portion coupled to the display housing and a slider positioned in the housing. A strap is coupled to the slider and configured to support the head mounted display on the user's head. A tension element having a first end portion coupled to the housing and a second end portion coupled to the slider provides a constant force on the strap to comfortably pull the strap against the user's head in order to retain the head mounted display on the user's head.

Abstract: Head mounted displays having lens movement assemblies and associated systems and methods are disclosed herein. In one embodiment, a head mounted display system includes a display housing surrounding one or more display devices, a first lens and a second lens. An input device on the display housing includes a control member moveable between a first position and a second position. A lens movement assembly is operatively coupled to the input device and the first and second lenses, and is configured to move the first lens relative to the second lens in response to movement of the control member between the first position and the second position.

Abstract: Technology is provided for a facial interface assembly for use with a head mounted display. The facial interface assembly includes a contoured spacer frame and an interchangeable face gasket removably attached to the contoured spacer frame. The contoured spacer frame includes a forehead interface portion, a pair of cheek interface portions, a bridge portion extending between the pair of cheek interface portions, and one or more attachment tabs configured to mate with a housing of the head mounted display. The face gasket includes a high-density foam layer, a low-density foam layer, and a fabric layer.

Abstract: A strap system for a head-mounted display system includes a rigid bar having an opening at a first end and a vertical slot situated on an outer surface of the rigid bar. The opening extends within the rigid bar in a lateral dimension. The strap system also includes a rigid segment with an end inserted into the opening of the rigid bar in the lateral dimension, one or more compression springs coupled to the rigid segment, a shuttle to press against the one or more compression springs so as to slide along the lateral dimension, and an adjustment strap fixedly coupled to the shuttle and extending beyond the end of the rigid segment and through the vertical slot on the rigid bar.

Abstract: Embodiments relate to a metal frame in a head-mounted display (HMD) that is structured to absorb impact and protect components of the HMD. The metal frame has a wall that is spaced away from a protection shell securing a display panel in the HMD. When the HMD is dropped or subject to external force, the wall may deform but keep the protection shell intact. Moreover, the metal frame has protruding ridges and brackets that surround outward facing cameras on the HMD. If the HMD is dropped, the protruding ridges and brackets can provide protection to the cameras.

Abstract: A device is configured to adjust interpupillary distance in a HMD. The device include a fixed plate, a button assembly, a spring, and a gear. The spring biases the button assembly towards the fixed plate to prevent movement of the button assembly. A button of the button assembly can be pressed beyond a threshold distance to disengage the button assembly and the fixed plate. Consequently, the button assembly can be moved relative to the fixed plate. The gear meshes with a gear rack of the button assembly and is associated with two display assemblies of the HMD. The movement of the button assembly drives the gear to rotate. The rotation of the gear causes the two display assemblies of the HMD to move in opposite directions. The movement of one of the display assemblies relative to the other display assembly adjusts interpupillary distance in the HMD.

Abstract: A virtual-reality system includes a head-mounted display, a camera protruding from a surface of the head-mounted display, and a compressible shock mount mounting the camera to the head-mounted display. The shock mount is to retract the camera towards the head-mounted display when compressed. The shock mount protects the camera from damage when the head-mounted display is dropped.

Abstract: A head-mounted display (HMD) includes a hybrid fan, a printed circuit board (PCB) with one or more electronic components and a heat pipe to dissipate heat. The hybrid fan has a center axis extending from a rear side of the HMD to a front side of the HMD. The hybrid fan pulls air from a rear side of the HMD. The heat pipe has an end coupled to the PCB. The heat pipe partially surrounds a periphery of the hybrid fan and transfers heat away from at least the PCB. The HMD further includes a side cover and a front cover. The side cover encloses the hybrid fan, the PCB and the heat pipe. The front cover is attached to the side cover with a slit between an outer edge of the front cover and an outer edge of the side cover to discharge air from the hybrid fan.

Abstract: A head-mounted display system includes a left lens for a user's left eye and a right lens for the user's right eye. The head-mounted display system also includes left and right display screens. The left display screen is coupled to the left lens to provide images to the user's left eye through the left lens. The right display screen is coupled to the right lens to provide images to the user's right eye through the right lens.

Abstract: A head-mounted display for a virtual-reality system includes one or more outer surfaces having a plurality of recesses. Light-emitting diodes (LEDs) are installed in respective recesses of the plurality of recesses. The recesses are covered with covers that are substantially flush with respective surfaces of the one or more outer surfaces of the head-mounted display.

Abstract: A virtual reality (VR) console receives slow calibration data from an imaging device and fast calibration data from an inertial measurement unit on a VR headset including a front and a rear rigid body. The slow calibration data includes an image where only the locators on the rear rigid body are visible. An observed position is determined from the slow calibration data and a predicted position is determined from the fast calibration data. If a difference between the observed position and the predicted position is greater than a threshold value, the predicted position is adjusted by a temporary offset until the difference is less than the threshold value. The temporary offset is removed by re-calibrating the rear rigid body to the front rigid body once locators on both the front and rear rigid body are visible in an image in the slow calibration data.

Abstract: Technology is provided for a tracking constellation assembly for use in a virtual reality system. The tracking constellation assembly includes a translucent panel having an outward facing surface, and an inward facing surface and a mounting surface each opposite the outward facing surface. The translucent panel is substantially opaque to visible light and translucent to infrared light. The assembly includes a flexible circuit board including first and second opposed surfaces. A spacer interconnects the first surface of the flexible circuit board and the mounting surface of the translucent panel. Infrared light emitting diodes are connected to the flexible circuit board and positioned to direct light through the translucent panel.

Abstract: Technology is provided for restraint systems for use with head mounted displays and head mounted displays incorporating the same. The head mounted display includes a display unit including a display housing and one or more display devices. A retention assembly attaches to the display unit to support the unit on a user's head. The retention assembly includes at least one tensioner mechanism including a housing having an anchor portion coupled to the display housing and a slider positioned in the housing. A strap is coupled to the slider and configured to support the head mounted display on the user's head. A tension element having a first end portion coupled to the housing and a second end portion coupled to the slider provides a constant force on the strap to comfortably pull the strap against the user's head in order to retain the head mounted display on the user's head.

Abstract: A strap system for a head-mounted display system includes a rigid bar having an opening at a first end and a vertical slot situated on an outer surface of the rigid bar. The opening extends within the rigid bar in a lateral dimension. The strap system also includes a rigid segment with an end inserted into the opening of the rigid bar in the lateral dimension, one or more compression springs coupled to the rigid segment, a shuttle to press against the one or more compression springs so as to slide along the lateral dimension, and an adjustment strap fixedly coupled to the shuttle and extending beyond the end of the rigid segment and through the vertical slot on the rigid bar.

Abstract: A strap system and a method for wearing the strap system are disclosed. The strap system includes a first flexible segment comprising a first stretchable band; a first semi-rigid segment to conform to a portion of the user's head and comprising a first arc portion to extend from above a user's first ear to below the user's occipital lobe; and a first rigid guide segment connected to the first flexible segment and the first semi-rigid segment. The first flexible segment extends beyond a first end of the first rigid guide segment and the first semi-rigid segment extends from a second end of the first rigid guide segment, the first and second ends of the first rigid guide segment being opposite to each other in a lateral dimension. The first flexible segment is stretchable within the first rigid guide segment along the lateral dimension.

Abstract: A head-mounted display includes a first display screen and a second display screen to display images to respective eyes of a user. The head-mounted display further includes a first member comprising a first rack and a second member comprising a second rack. The first member is coupled to the first display screen, and the second member is coupled to the second display screen. The head-mounted display includes a button and a gear train to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction. The gear train includes a first gear engaged with the first rack and a second gear concurrently engaged with the first gear and the second rack.