Abstract: A virtual-reality system includes a head-mounted display, a camera mounted on and protruding from a surface of the head-mounted display, and a compressible shock mount mounting the camera on the surface. 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 strap system for a head-mounted display system includes a rigid bar, semi-rigid segment, and rigid segment. The rigid bar includes a lateral slot and a vertical slot. The rigid segment includes a first end to fixedly couple to the semi-rigid segment and a second end opposite to the first end. The second end of the rigid segment inserts into the lateral slot from the first end of the rigid bar. The strap system further includes one or more compression springs coupled to the rigid segment, and a shuttle to press against the one or more compressions spring so as to slide along the lateral dimension. The strap system also includes an adjustment strap fixedly coupled to the shuttle and extending beyond the second end of the rigid segment and through the vertical slot on the rigid bar to adjustably couple to the outer surface of the rigid bar.

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: An audio headphone to couple to a strap for a head-mounted display is disclosed. The audio headphone includes a headphone speaker, a strap connector, and a four-bar linkage coupled to the strap connector to provide inward and outward movement of the headphone speaker with respect to a user's ear. The four-bar linkage comprises a first member coupled to the strap connector via a first joint, a second member coupled to the first member via a second joint, a third member coupled to the second member via a third joint, and a fourth member connected to the third member and coupled to the first member via a fourth joint. The fourth member is further coupled to the strap connector via a fifth joint. The third member comprises one or more rigid poles extending from the second member to the fourth member and surrounded by one or more respective elastic springs.

Abstract: A slidable battery door assembly is described. In implementations, the slidable battery door assembly (hereinafter “door assembly”) includes a door that is slidable to control access to a battery compartment for a device. Also included is a battery contact inside the battery compartment that is coupled to the door. When the door is closed, the battery contact holds a battery in place and serves as a portion of an electrical circuit that includes the battery. The door may be slidably opened such that the battery contact releases the battery, allowing the battery to be removed from the battery compartment. Thus, the door assembly enables easy installation and removal of a battery. Further, the door assembly can be positioned to hold a battery securely in place and provide an electrically conductive connection between the battery and an electrical circuit.

Abstract: A slidable battery door assembly is described. In implementations, the slidable battery door assembly (hereinafter “door assembly”) includes a door that is slidable to control access to a battery compartment for a device. Also included is a battery contact inside the battery compartment that is coupled to the door. When the door is closed, the battery contact holds a battery in place and serves as a portion of an electrical circuit that includes the battery. The door may be slidably opened such that the battery contact releases the battery, allowing the battery to be removed from the battery compartment. Thus, the door assembly enables easy installation and removal of a battery. Further, the door assembly can be positioned to hold a battery securely in place and provide an electrically conductive connection between the battery and an electrical circuit.

Abstract: A small footprint portable battery charging station having a vertically mounted circuit board, containing the charging circuit components, enclosed within a housing. The charging station is arrayed with bays back to back within which the batteries under charge may be mounted. The battery charging station further containing intake vents close to the base of the station and exhaust vents close to the top of the station. These vents encourage the natural convective flow of air around the charging circuit components.