Abstract: An electronic device can include lens assemblies that provide vision correction and are securely attached to optical assemblies of the electronic device. Each of the lens assemblies can maintain a position and orientation with respect to a corresponding one of the optical assemblies by the secure attachment. The attachment mechanisms can transition to extend during attachment and retract during detachment to maintain a low profile while separated. Such mechanisms can help ensure that the lens assembly is maintained at a desired position and orientation to provide the desired optical effect.

Abstract: An optical module for a head-mounted device is configured to present content to a user. The optical module includes an optical module housing assembly, a display assembly, and an eye camera. The optical module housing assembly has a first end and a second end. The lens is connected to the optical module housing assembly and positioned at the first end of the optical module housing assembly. The display assembly is connected to the optical module housing assembly and is positioned at the second end of the optical module housing assembly. The display assembly is configured to cause the content to be displayed to the user through the lens. The eye camera is connected to the optical module housing assembly and is positioned at the second end of the optical module housing assembly. The eye camera is configured to obtain images through the lens.

Abstract: A head-mountable display device can include a structural frame, where a first mounting bracket can be coupled to a first side of the structural frame. In some examples, the first mounting structure can include a cantilever arm. A second mounting bracket can be coupled to a second side of the structural frame opposite the first side, where the second mounting bracket can include a mounting arm, a sensor coupled to the cantilever arm, and a display assemble slidably coupled to the mounting arm.

Abstract: An optical module for a head-mounted device is configured to present content to a user. The optical module includes a housing, a first optical module disposed in the housing, and a second optical module disposed in the housing. The optical module includes an interpupillary distance adjustment assembly including supports coupled to the housing and configured to guide motion of the first optical module and the second optical module with respect to the housing to allow adjustment of a distance between the first optical module and the second optical module. The optical axes of the first optical module and the second optical module extend generally in a front-to-back direction of the housing. Motion axes of the supports extend generally in a side-to-side direction of the housing.

Abstract: A head-mountable device can include an optical module to present visual information to a user, a structure movably attached to the optical module, the structure defining a motion path of the optical module. The structure can include a housing defining an internal volume, and a battery disposed within the internal volume.

Abstract: A head-mountable display can include a structural frame defining a viewing opening, an optical module coupled to the structural frame. The optical module can include a display screen to project light through the viewing opening. The display screen can define an inner edge, an outer edge opposite the inner edge, a lower edge extending between the inner edge and the outer edge, and an upper edge opposite the lower edge. The optical module can include a first camera disposed adjacent the inner edge and closer to the lower edge than the upper edge, and a second camera disposed adjacent the lower edge and closer to the outer edge than the inner edge.

Abstract: A head-mounted device may include optical assemblies for presenting images to a user. The optical assemblies may each have a display for generating an image and a lens that presents the image to a corresponding eye box for viewing by a user. The optical assemblies may have lens barrels. Each lens barrel may have a first end to which a display is mounted and may have an opposing second end. A mount may be used to attach the lens to the second end of the lens barrel. The mount may have at least one flexure. The flexure may have a U-shaped cross-sectional shape. The mount may have a ring-shaped flexure that extends around a peripheral edge of the lens, may have flexure segments, or may have a set of three discrete flexures located at different positions along the edge of the lens.

Abstract: A head-mounted device may have a head-mounted housing. The housing may include a chassis with left and right openings that overlap respective left and right optical modules that present images eye boxes. Each optical module may have a lens and display that presents an image through the lens. The chassis may have an inner frame and outer frame. A middle portion of the chassis may form a stiffened nose bridge structure. Components in the housing such as a display, a fan housing, a heat sink layer, optical module guide rods, and a rear cover may span the width of the housing and may be attached to edge portions of the chassis, thereby forming a box-shaped structure that provides rigidity and helps prevent housing deformation.

Abstract: A head-mountable display device can include a structural frame, where a first mounting bracket can be coupled to a first side of the structural frame. In some examples, the first mounting structure can include a cantilever arm. A second mounting bracket can be coupled to a second side of the structural frame opposite the first side, where the second mounting bracket can include a mounting arm, a sensor coupled to the cantilever arm, and a display assemble slidably coupled to the mounting arm.

Abstract: A head-mounted device may include optical assemblies for presenting images to a user. Each optical assembly may have a support with first and second portions that move relative to each other. A motor in each optical assembly may move the second portion of that optical assembly relative to the first portion of that optical assembly. The optical assemblies may each have guide rods along which the second portion of the optical assembly slides relative to the first portion. A lens in each optical assembly may be used to convey an image from a display in the optical assembly to an eye box for viewing by a user. The lens and display may be mounted to the second portion. Face bumpers may be mounted to the first portion. To adjust eye relief, the motor of each optical assembly may move the second portion relative to the first portion.

Abstract: A head-mounted device may have optical modules that present images to a user's eyes. Each optical module may have a lens barrel with a display and a lens that presents an image from the display to a corresponding eye box. To accommodate users with different interpupillary distances, the optical modules may be slidably coupled to guide members such as guide rods. Actuators may slide the optical modules towards or away from each other along the guide rods. The guide rods may be formed from fiber-composite tubes with end caps that are fastened to a frame in the head-mounted device. The tubes may be partly or completely filled with cores to add strength. Low-friction coatings such as metal coatings may be formed on the fiber-composite tubes and the corresponding inner surfaces of the optical module structures that slidably engage the fiber-composite tubes.

Abstract: A head-mounted device may include optical assemblies for presenting images to a user. The optical assemblies may each have a display for generating an image and a lens that presents the image to a corresponding eye box for viewing by a user. The optical assemblies may have lens barrels. Each lens barrel may have a first end to which a display is mounted and may have an opposing second end. A mount may be used to attach the lens to the second end of the lens barrel. The mount may have at least one flexure. The flexure may have a U-shaped cross-sectional shape. The mount may have a ring-shaped flexure that extends around a peripheral edge of the lens, may have flexure segments, or may have a set of three discrete flexures located at different positions along the edge of the lens.

Abstract: A head-mountable display device can include a structural frame, where a first mounting bracket can be coupled to a first side of the structural frame. In some examples, the first mounting structure can include a cantilever arm. A second mounting bracket can be coupled to a second side of the structural frame opposite the first side, where the second mounting bracket can include a mounting arm, a sensor coupled to the cantilever arm, and a display assemble slidably coupled to the mounting arm.

Abstract: A head-mountable display can include a structural frame defining a viewing opening, an optical module coupled to the structural frame. The optical module can include a display screen to project light through the viewing opening. The display screen can define an inner edge, an outer edge opposite the inner edge, a lower edge extending between the inner edge and the outer edge, and an upper edge opposite the lower edge. The optical module can include a first camera disposed adjacent the inner edge and closer to the lower edge than the upper edge, and a second camera disposed adjacent the lower edge and closer to the outer edge than the inner edge.

Abstract: A head-mountable display can include a structural frame defining a viewing opening, an optical module coupled to the structural frame. The optical module can include a display screen to project light through the viewing opening. The display screen can define an inner edge, an outer edge opposite the inner edge, a lower edge extending between the inner edge and the outer edge, and an upper edge opposite the lower edge. The optical module can include a first camera disposed adjacent the inner edge and closer to the lower edge than the upper edge, and a second camera disposed adjacent the lower edge and closer to the outer edge than the inner edge.

Abstract: A wearable electronic device can include an optical assembly that supports a display and is moveable within the wearable electronic device. A compliant tracking assembly can be provided to facilitate precision alignment to allow the tracking assembly to operate as an encoder system. For example, the sensor of the tracking assembly can be consistently aligned with a scale so that movement of the optical assembly relative to the chassis can be tracked and controlled accurately and precisely. Such a compliant mechanism can provide protection of the sensor throughout the life of the wearable electronic device.

Abstract: A head-mounted device may have a head-mounted housing. The housing may include a chassis with left and right openings that overlap respective left and right optical modules that present images eye boxes. Each optical module may have a lens and display that presents an image through the lens. The chassis may have an inner frame and outer frame. A middle portion of the chassis may form a stiffened nose bridge structure. Components in the housing such as a display, a fan housing, a heat sink layer, optical module guide rods, and a rear cover may span the width of the housing and may be attached to edge portions of the chassis, thereby forming a box-shaped structure that provides rigidity and helps prevent housing deformation.

Abstract: A sensor assembly for a head-mountable device, the sensor assembly comprising: a flex circuit, an inertial measurement unit coupled to the flex circuit, an enclosure disposed around the inertial measurement unit and a portion of the flex circuit, to define a sealed volume containing the inertial measurement unit and the portion of the flex circuit. Thereby, a head-mountable device can securely support sensors in a manner that maintains their positions and orientations over time and isolates the sensors from an external environment. The sensor can be mounted within a sealed enclosure while maintaining an operable connection to the sensor. The sensor assemblies provides high robustness during the entirety of the service life of the head-mountable device without placing strain on the sensors themselves. The seal of the enclosure can isolate the sensor from external influences by preventing ingress of elements through the case and plate.

Abstract: A head-mounted device may include optical assemblies for presenting images to a user. Actuators may be used to adjust the spacing between the optical assemblies to accommodate different interpupillary distances. Upon detection of a power-down event or drop event, the device may be placed into an impact-safe mode. During the safe mode, the optical assemblies may be moved to predetermined impact-safe positions, brakes such as optical guide rail brakes may be adjusted, cushioning springs may be deployed, clutches may be adjusted, and/or other safety mechanisms may be activated to help protect the optical assemblies or other sensitive components from damage.

Abstract: A head-mounted device can effectively manage heat while also managing noise output in a manner that reduces the user's perception thereof. For example, a support member extending across a flow channel can provide multiple sections with different profiles and/or cross-sectional dimensions within the flow channel. Each of the profiles and/or cross-sectional dimensions can generate tonal noises at different frequencies, so that the tonal noises generated are distributed across multiple frequencies to mask such tonal noises among broadband noises that are generated by the head-mounted device. Such a support member can be moveably positioned within the flow channel and rigidly coupled to other components of the head-mounted device. Such a support member can also be used to draw heat away from other components of the head-mounted device to be dissipated by the flow of air within the flow channel.