Abstract: Disclosed is a system (100) comprising devices (102 a, 102 b, 200, 300, 304), each device comprising active illuminator, active sensor and processor, wherein processor (108 a) of device (102 a, 300) is configured to: project pattern of light onto surroundings (302), whilst detect reflections of pattern of light off onto surroundings; determine shapes of surfaces present in surroundings and distances of surfaces from pose of device; obtain pattern information indicative of other pattern(s) of light projected by other active illuminator(s) (104 b) of other device(s) (102 b, 304); detect reflections of other pattern(s) from pose of device; determine relative pose of other device(s) with respect to pose of device; and send, to server (110, 208), surface information indicative of shapes and distances of surfaces from pose of device, along with pose information indicative of relative pose of other device(s) with respect to pose of device.

Abstract: An imaging system and a method for producing extended-reality images for a display apparatus. The imaging system includes camera and processor. The processor is configured to: control camera to capture image of real-world environment; analyse captured image to identify first image segment representing input device and to determine location of at least one actionable area of input device in first image segment; determine at least one functional element to be presented for the actionable area, the functional element being indicative of at least one of: functionality of the at least one actionable area, status of the at least one actionable area; and process captured image to generate extended-reality image in which the functional element is virtually superimposed over the actionable area of input device or a virtual representation of the actionable area of input device.

Abstract: An imaging system and a method for producing extended-reality images for a display apparatus. The imaging system includes camera and processor. The processor is configured to: control camera to capture image of real-world environment; analyse captured image to identify first image segment representing input device and to determine location of at least one actionable area of input device in first image segment; determine at least one functional element to be presented for the actionable area, the functional element being indicative of at least one of: functionality of the at least one actionable area, status of the at least one actionable area; and process captured image to generate extended-reality image in which the functional element is virtually superimposed over the actionable area of input device or a virtual representation of the actionable area of input device.

Abstract: A tracking system for use in head-mounted display apparatus includes at least one emitter that emits signals; a first receiver and a second receiver that sense the emitted signals and generate sensor data, the first receiver and the second receiver being arranged on a first portion and a second portion, respectively, wherein the first portion faces a user when the head-mounted display apparatus is worn by the user, and the second portion is a part of a user-interaction controller of a head-mounted display; and a processor configured to process the generated sensor data to determine relative positions and orientations of first receiver and second receiver with respect to the emitter, and to determine a relative position and orientation of the second receiver with respect to the first receiver.

Abstract: A system for producing images for a display apparatus. The system includes image source(s) and processor. The processor is configured to obtain information indicative of angular size of field of view providable by image renderer of display apparatus; obtain information indicative of gaze direction of user; receive sequence of images from image source(s); and process sequence of images to generate sequence of processed images. When processing sequence of images, processor is configured to crop a given image, based on gaze direction of user and angular size of field of view, to generate processed image. Angular size of field of view represented by processed image is larger than angular size of field of view providable by the image renderer.

Abstract: A system for producing images for a display apparatus. The system includes image source(s) and processor. The processor is configured to obtain information indicative of angular size of field of view providable by image renderer of display apparatus; obtain information indicative of gaze direction of user; receive sequence of images from image source(s); and process sequence of images to generate sequence of processed images. When processing sequence of images, processor is configured to crop a given image, based on gaze direction of user and angular size of field of view, to generate processed image. Angular size of field of view represented by processed image is larger than angular size of field of view providable by the image renderer.

Abstract: A tracking system for use in head-mounted display apparatus includes at least one emitter that emits signals; a first receiver and a second receiver that sense the emitted signals and generate sensor data, the first receiver and the second receiver being arranged on a first portion and a second portion, respectively, wherein the first portion faces a user when the head-mounted display apparatus is worn by the user, and the second portion is a part of a user-interaction controller of a head-mounted display; and a processor configured to process the generated sensor data to determine relative positions and orientations of first receiver and second receiver with respect to the emitter, and to determine a relative position and orientation of the second receiver with respect to the first receiver.

Abstract: A display apparatus includes a plurality of housings connected by adjustable device for setting spacing between centers of the plurality of housings, each housing including: first image source mounted to side of housing; second image source mounted to housing angularly offset from first image source, wherein second image source includes higher resolution and narrower image field of view than first image source; optical combiner positioned in housing between first and second image sources, on which first image from first image source and second image from second image source are superimposed and made visible to user's eye; magnification lens for magnifying second image to increase image field of view; eyepiece lens for reducing focal distance between the optical combiner and the user's eye; and controller configured to control output of second image source to render colors to compensate for distortion and chromatic aberrations introduced by magnification lens.

Abstract: A display apparatus includes a plurality of housings connected by adjustable device for setting spacing between centers of the plurality of housings, each housing including: first image source mounted to side of housing; second image source mounted to housing angularly offset from first image source, wherein second image source includes higher resolution and narrower image field of view than first image source; optical combiner positioned in housing between first and second image sources, on which first image from first image source and second image from second image source are superimposed and made visible to user's eye; magnification lens for magnifying second image to increase image field of view; eyepiece lens for reducing focal distance between the optical combiner and the user's eye; and controller configured to control output of second image source to render colors to compensate for distortion and chromatic aberrations introduced by magnification lens.

Abstract: Disclosed is a display apparatus and a method of indicating a level of immersion of the user. The display apparatus comprises: at least one image renderer for rendering an image; a see-through arrangement for projecting a real world image upon user's eyes; at least one optical combiner for optically combining a projection of the rendered image with a projection of the real world image to create a visual scene; means for detecting a gaze-direction of the user; a visual indicator for indicating a level of immersion of the user when the display apparatus is in use, and positioned on an outer side of the display apparatus; and a processor configured to generate a drive signal for the visual indicator, based upon at least one of: the gaze direction of the user, a current mode of operation of the display apparatus, and to control the visual indicator via the drive signal.

Abstract: A display for use in a display apparatus. The display includes a first display part having a first display resolution, and a second display part having a second display resolution, the second display resolution being higher than the first display resolution, the first display part and the second display part being arranged in a manner that a display area of the second display part is substantially surrounded by a display area of the first display part.

Abstract: A display apparatus, and a method of displaying via the display apparatus. The display apparatus includes at least one context image renderer for rendering a context image, at least one focus image renderer for rendering a focus image, at least one first optical combiner for combining the projection of the rendered context image with the projection of the rendered focus image to form a combined projection, and at least one second optical combiner for combining the combined projection with a projection of a real world image. An angular width of a projection of the rendered context image ranges from 40 degrees to 220 degrees. An angular width of a projection of the rendered focus image ranges from 5 degrees to 60 degrees.

Abstract: Disclosed is a display apparatus including first display having first display resolution, that is to be employed for displaying first image; second display having second display resolution, that is to be employed for displaying second image; exit optical element; and optical combiner to optically combine projections of the first and second images. The optical combiner includes first optical element having a reflective surface obliquely facing the exit optical element having an outwardly-curved shape.

Abstract: An electronic device comprises a camera and a retaining member. The camera includes an objective portion configured to collect light from a subject, a sensor portion reversibly separable from the objective portion, an alignment-sensing system configured to sense a state of alignment between the objective portion and the sensor portion, an actuator configured to move the objective or sensor portion, and a computer configured to control the actuator responsive to output of the alignment-sensing system, so as to bring the objective and sensor portions into alignment. The retaining member is configured to couple the objective portion to the sensor portion when the objective and sensor portions are aligned and when the objective portion is separated from the sensor portion.

Abstract: A gaze-tracking system for use in a head-mounted display apparatus. The gaze-tracking system includes at least one illuminator to emit light pulses for illuminating a user's eye; at least one camera to capture image of reflections of the light pulses; at least one reflective element arranged on an optical path of the reflections of the light pulses, such that when incident upon the at least one reflective element, the reflections of the light pulses are reflected towards the at least one camera; at least one actuator associated with the at least one reflective element, wherein the at least one actuator moves the at least one reflective element; and a processor configured to: process the at least one image to detect a gaze direction of user; and control the at least one actuator to adjust, based upon the detected gaze direction, position of the at least one reflective element.

Abstract: An electronic device comprises a camera and a retaining member. The camera includes an objective portion configured to collect light from a subject, a sensor portion reversibly separable from the objective portion, and a computer configured to return an indication of alignment of the objective and sensor portions based on output of one or more optical sensor elements of the sensor portion. The retaining member is configured to couple the objective portion to the sensor portion when the objective and sensor portions are aligned and also when the objective portion is separated from the sensor portion.

Abstract: A multi-part electronic device has a mode with at least two overlapped device parts comprising a first camera part mounted on a first device part and a second camera part mounted on a second device part. At least one of the first and second camera parts is resiliently mounted such that contact between the first and second camera parts when the first device part and the second device part are overlapped with each other aligns the first camera part and the second camera part within a selected angular deviation between the camera parts' respective optical axes. A camera part having a body and a flexible mount and a method of reducing tilt error are also described.

Abstract: A device comprising at least two body sections is disclosed. The first body section comprises a movable imaging unit and a magnet rigidly fixed to the imaging unit, and the second body section comprising an optical unit with a magnet rigidly fixed to the optical unit. The body sections are in a movable connection with each other, and the device is operable in at least two modes. In the first mode, the imaging unit and the optical unit are fixed in a set relative position due to magnetic interaction between the magnets. In the second mode, the imaging unit is positioned away from the optical unit.

Abstract: A gaze-tracking system for a head-mounted display apparatus includes a first set of illuminators for emitting light to illuminate a user's eye; at least one photo sensor for sensing reflections of the light from the user's eye; at least one actuator for moving at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor; and a processor coupled with the first set of illuminators, the at least one photo sensor and the at least one actuator. The processor is configured to collect and process sensor data from the at least one photo sensor to detect a gaze direction of the user, and to control the at least one actuator to adjust, based upon the detected gaze direction, a position of the at least one of: (i) the first set of illuminators, (ii) the at least one photo sensor.

Abstract: A gaze-tracking system for use in a head-mounted display apparatus. The gaze-tracking system includes at least one illuminator to emit light pulses for illuminating a user's eye; at least one camera to capture image of reflections of the light pulses; at least one reflective element arranged on an optical path of the reflections of the light pulses, such that when incident upon the at least one reflective element, the reflections of the light pulses are reflected towards the at least one camera; at least one actuator associated with the at least one reflective element, wherein the at least one actuator moves the at least one reflective element; and a processor configured to: process the at least one image to detect a gaze direction of user; and control the at least one actuator to adjust, based upon the detected gaze direction, position of the at least one reflective element.