Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have displays that produce images. Positioners may be used to move the displays relative to the eye positions of a user's eyes. An adjustable optical system may include tunable lenses such as tunable cylindrical liquid crystal lenses. The displays may be viewed through the lenses when the user's eyes are at the eye positions. A sensor may be incorporated into the head-mounted display to measure refractive errors in the user's eyes. The sensor may include waveguides and volume holograms, and a camera for gathering light that has reflected from the retinas of the user's eyes. Viewing comfort may be enhanced by adjusting display positions relative to the eye positions and/or by adjusting lens settings based on the content being presented on the display and/or measured refractive errors.

Abstract: An electronic device may have a display and a camera. Control circuitry in the device can gather information on a user's point of gaze using a gaze tracking system and other sensors, can gather information on the real-world image such as information on content, motion, and other image attributes by analyzing the real-world image, can gather user vision information such as user acuity, contrast sensitivity, field of view, and geometrical distortions, can gather user input such as user preferences and user mode selection commands, and can gather other input. Based on the point-of-gaze information and/or other gathered information, the control circuitry can display the real-world image and supplemental information on the display. The supplemental information can include augmentations such as icons, text labels, and other computer-generated text and graphics overlaid on the real world image and can include enhanced image content such as magnified portions of the real-world image.

Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have displays that produce images. Positioners may be used to move the displays relative to the eye positions of a user's eyes. An adjustable optical system may include tunable lenses such as tunable cylindrical liquid crystal lenses. The displays may be viewed through the lenses when the user's eyes are at the eye positions. A sensor may be incorporated into the head-mounted display to measure refractive errors in the user's eyes. The sensor may include waveguides and volume holograms, and a camera for gathering light that has reflected from the retinas of the user's eyes. Viewing comfort may be enhanced by adjusting display positions relative to the eye positions and/or by adjusting lens settings based on the content being presented on the display and/or measured refractive errors.

Abstract: An electronic device may have a display and a camera. Control circuitry in the device can gather information on a user's point of gaze using a gaze tracking system and other sensors, can gather information on the real-world image such as information on content, motion, and other image attributes by analyzing the real-world image, can gather user vision information such as user acuity, contrast sensitivity, field of view, and geometrical distortions, can gather user input such as user preferences and user mode selection commands, and can gather other input. Based on the point-of-gaze information and/or other gathered information, the control circuitry can display the real-world image and supplemental information on the display. The supplemental information can include augmentations such as icons, text labels, and other computer-generated text and graphics overlaid on the real world image and can include enhanced image content such as magnified portions of the real-world image.

Abstract: An electronic device may have a foveated display, an eye-tracking system and a head movement detection system. The eye-tracking system may gather information on a user's point of regard on the display while the head movement detection system may capture information regarding the rotation of the observer's head. Based on the point-of-regard information, head rotation information, image data, the type of eye/head movement that is underway, and/or tiredness information, control circuitry in the electronic device may produce image data for a display, with areas of different resolutions and(or) visual quality. A full-resolution and(or) quality portion of the image may overlap the point of regard. One or more lower resolution portions of the image may surround the full-resolution portion. The control circuitry may include a gaze prediction system for predicting the movement of the user's gaze during a saccade.

Abstract: An electronic device may have a display and a camera. Control circuitry in the device can gather information on a user's point of gaze using a gaze tracking system and other sensors, can gather information on the real-world image such as information on content, motion, and other image attributes by analyzing the real-world image, can gather user vision information such as user acuity, contrast sensitivity, field of view, and geometrical distortions, can gather user input such as user preferences and user mode selection commands, and can gather other input. Based on the point-of-gaze information and/or other gathered information, the control circuitry can display the real-world image and supplemental information on the display. The supplemental information can include augmentations such as icons, text labels, and other computer-generated text and graphics overlaid on the real world image and can include enhanced image content such as magnified portions of the real-world image.

Abstract: An electronic device may have a display and a camera. Control circuitry in the device can gather information on a user's point of gaze using a gaze tracking system and other sensors, can gather information on the real-world image such as information on content, motion, and other image attributes by analyzing the real-world image, can gather user vision information such as user acuity, contrast sensitivity, field of view, and geometrical distortions, can gather user input such as user preferences and user mode selection commands, and can gather other input. Based on the point-of-gaze information and/or other gathered information, the control circuitry can display the real-world image and supplemental information on the display. The supplemental information can include augmentations such as icons, text labels, and other computer-generated text and graphics overlaid on the real world image and can include enhanced image content such as magnified portions of the real-world image.

Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have displays that produce images. Positioners may be used to move the displays relative to the eye positions of a user's eyes. An adjustable optical system may include tunable lenses such as tunable cylindrical liquid crystal lenses. The displays may be viewed through the lenses when the user's eyes are at the eye positions. A sensor may be incorporated into the head-mounted display to measure refractive errors in the user's eyes. The sensor may include waveguides and volume holograms, and a camera for gathering light that has reflected from the retinas of the user's eyes. Viewing comfort may be enhanced by adjusting display positions relative to the eye positions and/or by adjusting lens settings based on the content being presented on the display and/or measured refractive errors.

Abstract: An electronic device may have a foveated display, an eye-tracking system and a head movement detection system. The eye-tracking system may gather information on a user's point of regard on the display while the head movement detection system may capture information regarding the rotation of the observer's head. Based on the point-of-regard information, head rotation information, image data, the type of eye/head movement that is underway, and/or tiredness information, control circuitry in the electronic device may produce image data for a display, with areas of different resolutions and(or) visual quality. A full-resolution and(or) quality portion of the image may overlap the point of regard. One or more lower resolution portions of the image may surround the full-resolution portion. The control circuitry may include a gaze prediction system for predicting the movement of the user's gaze during a saccade.

Abstract: An electronic device may have a display and a camera. Control circuitry in the device can gather information on a user's point of gaze using a gaze tracking system and other sensors, can gather information on the real-world image such as information on content, motion, and other image attributes by analyzing the real-world image, can gather user vision information such as user acuity, contrast sensitivity, field of view, and geometrical distortions, can gather user input such as user preferences and user mode selection commands, and can gather other input. Based on the point-of-gaze information and/or other gathered information, the control circuitry can display the real-world image and supplemental information on the display. The supplemental information can include augmentations such as icons, text labels, and other computer-generated text and graphics overlaid on the real world image and can include enhanced image content such as magnified portions of the real-world image.

Abstract: A three-dimensional control apparatus including a casing, the casing including a first surface and a second surface, the first surface being opposite to the second surface; and a three-dimensional (3D) controller including a first cap actuator, the first cap actuator including a first rounded control surface, at least a portion of the first rounded control surface extending beyond the first surface of the casing; a second cap actuator, the second cap actuator including a second rounded control surface, at least a portion of the second rounded control surface extending beyond the first surface of the casing, the first rounded control surface being aligned with the second rounded control surface; a first sensor to detect force on the first cap actuator; and a second cap sensor to detect force on the second cap actuator.

Abstract: A three-dimensional control apparatus including a casing, the casing including a first surface and a second surface, the first surface being opposite to the second surface; and a three-dimensional (3D) controller including a first cap actuator, the first cap actuator including a first rounded control surface, at least a portion of the first rounded control surface extending beyond the first surface of the casing; a second cap actuator, the second cap actuator including a second rounded control surface, at least a portion of the second rounded control surface extending beyond the first surface of the casing, the first rounded control surface being aligned with the second rounded control surface; a first sensor to detect force on the first cap actuator; and a second cap sensor to detect force on the second cap actuator.