Abstract: A waveguide comprising a pair of parallel surfaces arranged to provide waveguiding therebetween. A first surface of the pair of parallel surfaces comprises a plurality of layers of a first dielectric and a plurality of layers of second dielectric arranged in an alternating configuration. Each layer of the first and second dielectric has a first end and a second end. A percentage change in the thickness of each layer from the first end to the second end of that layer has one of a plurality of discrete allowable values. The total number of layers of the first and second dielectric is greater than the total number of discrete allowable values. A difference in refractive index between the first dielectric and second dielectric is greater than 0.4.

Abstract: A head-mounted device may have a head-mounted housing. The head-mounted housing may have rear-facing displays that display images for a user. The images are viewable from eye boxes while the head-mounted device is being worn by the user. The displays may be mounted in left and right optical modules that have respective left and right lenses. A positioning system may be used to adjust the spacing between the left and right optical modules to accommodate different interpupillary distances. An adjustable heat extraction system may be provided that includes fans configured to force air between airflow inlets and outlets past heat sinks. The heat sinks may have fins that are adjusted in orientation and/or that are otherwise adjusted based on changes in optical module spacing. The airflow inlets and/or outlets may have adjustable louvers or other movable members that allow these ports to be fully opened, fully closed, or partly closed.

Abstract: The invention relates to a diffractive waveguide display device comprising an image projector capable of emitting laser rays at one or more wavelengths, a waveguide body having a first surface and an opposite second surface and adapted to guide said laser rays from the image projector between the first surface and the second surface, an out-coupling diffractive optical element on said first surface for coupling said laser rays out of the waveguide body, and an anti-interference coating (35) arranged on the second surface of the waveguide body aligned with the out-coupling diffractive optical element.

Abstract: A light-emitting layer of an apparatus includes an addressable array of light-emitting elements including a first light-emitting element and a periodic optical layer overlaying the light-emitting layer. The periodic optical layer includes at least a first periodic optical feature having a first optical power and a second periodic optical feature having a different optical power. A first controllable light-steering layer is disposed between the light-emitting layer and the periodic optical layer. The first controllable light-steering layer is switchable between directing light from the first light-emitting element through the first periodic optical feature and directing light from the first light-emitting element through the second periodic optical feature.

Abstract: Provided is a head-up display apparatus capable of preventing damage due to sunlight and ensuring user convenience. A reflection mirror M1 reflects an image created by a display panel and projects it onto a display region. A solar radiation sensor detects a sunlight intensity when a position of sun exists within a predetermined detection range. A blocking mechanism forms a projected light path of an image between the display region and the display panel when being turned off, and blocks the projected light path of the image and an incident light path of the sunlight which is direction opposite thereto when being turned on. A protection processor controls ON/OFF of the blocking mechanism based on an estimated temperature of the display panel, which is estimated by using a sunlight intensity from the solar radiation sensor, luminance of a light source, and an ambient temperature.

Abstract: A joystick for controlling a machine comprising; a handle assembly allowed to rotate around a central axis extending along a longitudinal direction of the joystick, a control portion having a casing in which a lower circuit with a lower sensor is provided and a control lever attached to the said casing so as to move pivotally about at a pivot axis which extends perpendicularly to the longitudinal axis of the control lever. Advantageously, said control lever having at least one embedded lower magnet is manufactured from plastic by the injection molding; said control lever comprises: at least one pivotal protrusion extending outwardly from the control lever for bearing in a housing of a casing; said pivotal protrusion forming a monolithic structure with the control lever by said injection molding and in that said lower magnet is embedded within the pivotal protrusion to be in the proximity of said lower circuit.

Abstract: A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a base material and a pair of pixels, and the base material covers the pair of pixels and has a light-transmitting property. The pair of pixels includes one pixel and another pixel, and the one pixel includes a light-emitting device and a first microlens. The light-emitting device emits light toward the base material, and the first microlens is interposed between the base material and the light emission and converges light. The first microlens includes a first surface and a second surface; the second surface is closer to the light-emitting device than the first surface is; and the second surface has a smaller radius of curvature than the first surface. The other pixel includes a photoelectric conversion device and a second microlens. The second microlens is interposed between the base material and the photoelectric conversion and converges external light incident from the base material side.

Abstract: Methods and devices are provided in which a first screen is displayed on a first display of the first electronic device. An image of an eye of a user of the first electronic device is obtained. A first object in the first screen corresponding to a gaze direction of the user is identified based on the image of the eye of the user. An input interface is displayed on a second display of the second electronic device based on a type of the first object. A second screen that is different from the first screen is displayed on the first display of the first electronic device, based on a first input obtained through the input interface.

Abstract: A touch panel display includes a pixel including an organic EL element, a first transistor electrically connected to the power supply line and the organic electroluminescence element, and a second transistor electrically connected to the data signal line and the first transistor, a touch sensor overlapping the pixel, and a shield electrode between the pixel and the touch sensor. The shield electrode includes an opening in a region overlapping with the second transistor, the third gate electrode is disposed inside the opening, and the third gate electrode and the fourth gate electrode are electrically connected, the first gate electrode is electrically connected to the shield electrode, and the second gate electrode is connected to a drain of the second transistor, and the shield electrode is grounded.

Abstract: An image display system includes a wearable device including a display configured to display an image in a field of vision of a user and a first sensor configured to detect an absolute movement of the display, and a mobile terminal including a second sensor configured to detect an absolute movement of the vehicle. The image display system further includes an image controller including a computer installed in the mobile terminal to display a subject image on the display in an AR display mode. The image controller is configured to determine a display position of the subject image on the display based at least on the absolute movement of the display detected by the first sensor and the absolute movement of the vehicle detected by the second sensor.

Abstract: A head-up display device is provided in a vehicle together with a headlamp. The head-up display device includes a light source, a control unit, and a projection unit. The light source emits white light whose correlated color temperature is changeable. The control unit adjusts the correlated color temperature of the white light emitted from the light source. The projection unit forms image light by the white light emitted from the light source. The projection unit projects the image light onto a projection target member disposed in front of a driver of the vehicle, thereby displaying a virtual image superimposed on a landscape for the driver. The control unit adjusts the correlated color temperature of the white light emitted from the light source in accordance with a correlated color temperature of irradiation light emitted from the headlamp.

Abstract: A display system based on a four-dimensional light field, and a display method therefor. The display system includes: a light source module (11), a display panel (12), and a light conduction component (13), wherein the light source module (11) includes a plurality of light sources arranged in an array; and the display panel (12) is a reflective liquid crystal display panel, and the display panel (12) includes a plurality of pixel units arranged in an array. Light emitted by the light sources in the light source module (11) irradiates the pixel units in the display panel (12); and the pixel units in the display panel (12) transmit the received light to a target position by means of the light conduction component (13).

Abstract: Provided is a wearable display device. The wearable display device includes: a motor, a processor, and a motor drive assembly; wherein the processor is connected to the motor drive assembly, and is configured to receive a motor control instruction and send the motor control instruction to the motor drive assembly; the motor drive assembly is connected to the motor, and is configured to: control the motor to rotate based on the rotation mode in the case that the motor control instruction carries the rotation mode, and adjust a rotation speed of the motor based on the speed control parameter in the case that the motor control instruction carries the speed control parameter; and the motor, upon rotating, is configured to adjust a position of an imaging face of the wearable display device.

Abstract: A head-up display includes a display device and an optical system. The display device includes a display panel, an input unit, a memory, and a controller. The display panel is configured to display an image. The input unit is configured to receive calibration information indicating a position of a calibration object and first position information indicating positions of user's eyes based on an image capturing device. The memory is configured to store the calibration information. The optical system is configured to allow a user to visually recognize a virtual image plane, which is a virtual image of the image displayed on the display panel, by reflecting image light emitted corresponding to the image toward the user's eyes. The controller is configured to convert the first position information into second position information indicating the positions of the eyes based on the virtual image plane by using the calibration information.

Abstract: The disclosed system for varifocal adjustments may include a frame, an optical lens pair supported by the frame, and a brake mechanism coupled to the frame. The optical lens pair may include a first lens that is movably coupled to the frame and a second lens that is fixedly coupled to the frame. The brake mechanism may be configured to frictionally stop movement of the first lens and to maintain a position of the first lens. Various other devices, systems, and methods are also disclosed.

Abstract: A head-up display includes: a display device that emits image light; a mirror that reflects the image light; a mirror holder that includes a rotating shaft; and a bearing that rotatably supports the rotating shaft. The mirror holder supports the mirror from a back surface side of the mirror. The rotating shaft comprises a first rotating shaft located outside a perimeter of the mirror as viewed from the back surface side of the mirror, and a second rotating shaft located inside the perimeter of the mirror as viewed from the back surface side of the mirror. The second rotating shaft is provided on an axis same as an axis of the first rotating shaft. The bearing supports the first rotating shaft and the second rotating shaft.

Abstract: Systems and methods for eye enrollment for a head-mounted enclosure are described. Some implementations may include an image sensor; and a processing apparatus configured to: access a set of images, captured using the image sensor, that depict a face of a user and a head-mounted enclosure that the user is wearing; and determine, based on the set of images, a first position of a first eye of the user relative to the head-mounted enclosure.

Abstract: Systems and methods for generating a face model for a user of a head-mounted device are disclosed. The head-mounted device can include one or more eye cameras configured to image the face of the user while the user is putting the device on or taking the device off. The images obtained by the eye cameras may be analyzed using a stereoscopic vision technique, a monocular vision technique, or a combination, to generate a face model for the user.

Abstract: A method, includes providing a wafer including a first surface grating extending over a first area of a surface of the wafer and a second surface grating extending over a second area of the surface of the wafer; de-functionalizing a portion of the surface grating in at least one of the first surface grating area and the second surface grating area; and singulating an eyepiece from the wafer, the eyepiece including a portion of the first surface grating area and a portion of the second surface grating area. The first surface grating in the eyepiece corresponds to an input coupling grating for a head-mounted display and the second surface grating corresponds to a pupil expander grating for the head-mounted display.

Abstract: There is provided an optical device, including a light-transmitting substrate having at least two parallel major surfaces, edges and an output aperture, an optical element for coupling light waves into the substrate to effect total internal reflection, a plurality of redirecting elements positioned outside of the substrate comprising at least two spaced-apart redirecting elements having a selectable laterally displaceable reflection-transmission ratio, and at least one reflecting surface having at least one active side located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, wherein light waves trapped inside the substrate are coupled out from the substrate through the output aperture substantially inclined in relation to the normal to the substrate major surfaces, and are reflected from the redirecting elements into a viewer's eye, and wherein at least one of the redirecting elements is lateral displaceable in relation to another redirecting el