A light field near-eye display device and a method of light field near-eye display are provided. The light field near-eye display device includes a processor, a display panel, and a lens module. The processor adjusts a preset eye box according to a vision data to obtain an adjusted eye box, and adjusts a preset image data according to the adjusted eye box to generate an adjusted image data. The display panel is coupled to the processor and emits an image beam according to the adjusted image data. The lens module includes a micro lens array and is disposed between the display panel and a pupil. The image beam is incident on the pupil via the lens module and displays a light field image.

Augmented reality experiences of a user wearing an electronic eyewear device are captured by at least one camera on a frame of the electronic eyewear device, the at least one camera having a field of view that is larger than a field of view of a display of the electronic eyewear device. An augmented reality feature or object is applied to the captured scene. A photo or video of the augmented reality scene is captured and a first portion of the captured photo or video is displayed in the display. The display is adjusted to display a second portion of the captured photo or video with the augmented reality features as the user moves the user's head to view the second portion of the captured photo or video. The captured photo or video may be transferred to another device for viewing the larger field of view augmented reality image.

A directional backlit type display device comprises a backlight provided with a light source module, a reflective narrow-angle diffuser provided with an array of a plurality of micro-curved mirrors reflecting the light and uniformly diffusing the light with a narrow diffusion angle, the backlit type display panel being configured on a projecting path where the reflective narrow-angle diffuser reflecting the light to an observer, the backlit type display panel displaying an image projected to an eye box of the observer by the reflected light, at least one of the micro-curved mirrors of the reflective narrow-angle diffuser corresponding to each pixel of the image, uniformly diffusing the light of each pixel to the eye box of the observer, the diffusion areas of all pixels on the backlit type display panel superimpose on the eye box of the observer.

An apparatus including a first display for a user's first eye; a first motion sensor and/or a first externally facing image capture device configured to capture at least a first image of a user's real world point of view; a second display for a user's second eye; a second motion sensor and/or a second externally facing image capture device configured to capture at least a second image of a user's real world scene; and a controller configured to: receive a first signal from: the first motion sensor and/or the first image capture device, receive a second signal from: the second motion sensor and/or the second image capture device, determine, based on the first and second signals, a change in orientation of the first display with respect to the second display, and control display of first content on the first display in dependence on the determined change in orientation.

Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image capturing device to capture one or more images, the one or more images corresponding to a field of the view of a user of a head-mounted augmented reality device, and a processor communicatively coupled to the image capturing device to extract a set of map points from the set of images, to identify a set of sparse points and a set of dense points from the extracted set of map points, and to perform a normalization on the set of map points.

A method operates a visual field display device, particularly for a motor vehicle, which includes an autostereoscopic planar pixel array for generating a projecting light beam containing a display content, and is designed to project this onto a partially transparent, reflective projection screen, particularly a front windscreen of the motor vehicle, in such a way that a virtual display image superimposed into a field of vision of a user is generated behind the screen. The method provides at least one surroundings parameter and/or user parameter, and switches between at least two qualitatively different 3D, 2D and/or monocular operating modes of the planar pixel array, depending on the surroundings parameters and/or user parameters provided, in order to adapt the virtual display image to qualitative operational changes relating to the surroundings and/or the user of the visual field display device.

A transmissive image display device includes an image generation part configured to emit a light, and a light-guiding optical system configured to guide the light. The light-guiding optical system includes a first deflection part configured to deflect the light, and a second deflection part configured to further deflect the light deflected by the first deflection part to guide the light to a position of the exit pupil while transmitting a portion of external light, a first external light transmittance adjustment part is provided outside an optical path of the light between the first deflection part and the second deflection part, and an average external light transmittance of the first external light transmittance adjustment part is higher than one of an average external light transmittance of the first deflection part and an average external light transmittance of the second deflection part lower than the other.

A first optical unit having positive power a second optical unit including a first diffraction element and having positive power a third optical unit having positive power and a fourth optical unit including a second diffraction element and having a positive power. In the optical path, a first intermediate image of the image light is formed between the first optical unit and the third optical unit, a pupil is formed between the second optical unit and the fourth optical unit, a second intermediate image of the image light is formed between the third optical unit and the fourth optical unit, an exit pupil is formed on a side of the fourth optical unit opposite to the third optical unit, and a prism member configured to correct a ray shape of the image light is provided between the second optical unit and the fourth optical unit.

A wavefront sensor for determining a wavefront of an impinging light beam includes a microlens array formed by nanoimprint lithography. Each microlens of the microlens array includes a plurality of concentric ridges separated by concentric grooves. A ratio F of a width of the concentric ridges to a pitch p of the concentric ridges is a function of a radial distance r from a microlens center to the concentric ridges. An effective refractive index n of microlenses depends on a fill ratio of a binary pattern, which depends on the radial distance from the microlens center. A photodetector array is disposed downstream of the microlens array and configured for receiving the plurality of light spots at the focal plane. An imaging optical rangefinder includes the wavefront sensor, a pulsed light source for emitting probing pulses, and a photodetector for receiving reflected light pulses.

The invention relates to an apparatus for protecting eyes from radiation, in particular for protecting the lenses of the eyes of medical personnel from x-ray radiation or other ionizing radiation during medical examinations. The apparatus is easy to handle and ensures shielding of the eyes from x-ray radiation, but nonetheless offers the best working and viewing conditions for the wearer. This is achieved by a housing made of a shell-type frame, which encloses the eye area and laterally the temples of the wearer, and a support device for placement on the head and with a nose rest for positioning on the bridge of the nose. The frame includes a frontal opening, in which a shield opaque to x-ray radiation is fitted, and at least one video playback device is arranged on the rear side of the shield, facing toward the eyes, inside the frame, and being coupled to an optical recording device or a camera, which is arranged on the side of the shield that faces away from the wearer.