A head up display system, a control method thereof and a vehicle are provided. The head up display system includes an imaging device group, a concave reflective element, a directional imaging device and a processor, the imaging device group includes at least one single-layer imaging device; the directional imaging device includes a light source device, a direction control element, a diffusing element and a light modulating layer; the processor is respectively connected with the directional imaging device and the at least one single-layer imaging device in the imaging device group.

An information display system according to the present disclosure includes: display device provided in a mask, the display device being configured to display a screen viewed by a person wearing the mask; and display control unit for switching a displaying mode of the screen.

The present invention relates to a reflective eyepiece optical system and a head-mounted near-to-eye display device. The system includes: a first optical element and a second optical element arranged successively long an incident direction of an optical axis of human eyes and a first lens group located on in optical axis of in miniature image displayer. The first optical element is used for transmitting and reflecting an image light from the miniature image displayer. The second optical element includes one optical reflect on surface. The first optical element reflects the image light refracted b the first tens group to the second optical element, and then transits the image light reflected by the second optical element to the human eyes. The effective focal lengths of the first sub-lens group and the second sub-lens group are a combination of positive and negative.

A method for generating virtual reality images and used in a light field near-eye display includes steps of: shifting a display image according to at least one change vector of a plurality of eye movement parameters, and calculating a compensation mask according to a simulated image and superimposing the compensation mask on a target image to generate a superimposed target image, wherein brightness distributions of the simulated image and the compensation mask are opposite to each other. The light field near-eye display is also provided. In this way, the light field near-eye display for generating virtual reality images and the method thereof can achieve the purpose of improving the uniformity of the image and expanding the eye box size.

An image delivery system (IDS) comprising: a first waveguide comprising an input aperture for receiving an input virtual image provided by a display engine and a first plurality of first facets positioned to reflect light from the received input virtual image out from the first waveguide; a second waveguide configured to receive the light reflected out from the first waveguide and comprising a second plurality of second facets positioned to reflect the received light out from the second waveguide to project an output virtual image responsive to the input into an eye motion box (EMB); and a partially reflective coating formed on each facet selected from a number of different partially reflective coatings less than a total number of facets equal to a sum of the number of facets in the first and second pluralities; wherein the output virtual image exhibits a fidelity of 80% or better.

An optical display assembly includes an optical-mechanical module, an optical transmission element, and a light path altering element. The optical-mechanical module is configured to cast light. The optical transmission element is configured to receive the light on a first surface thereof and reflect the light in an interior between the first surface and a second surface thereof. The first surface is at a first angle with respect to a light-emitting surface of the optical-mechanical module. The light path altering element is disposed between the optical transmission element and the optical-mechanical module and configured to receive the light and cast the light onto the first surface. The light exits the first surface. A distance between the third surface and a center of a position at which the light exits the first surface is within a predetermined range.

The present invention relates to a near-eye display device. The a near-eye display device includes a display, a first lens disposed in front of the display so as to be spaced apart from the display by a predetermined distance, a dynamic aperture adjustment element disposed adjacent to the first lens to dynamically control an aperture size of the first lens and a horizontal position of the aperture on a plane perpendicular to an optical axis, a main optics lens disposed to be spaced apart from the first lens by a predetermined distance, and a control system configured to control the dynamic aperture adjustment element.

A device includes a memory configured to store instructions and also includes one or more processors configured to execute the instructions to obtain audio data corresponding to a sound source and metadata indicative of a direction of the sound source. The one or more processors are configured to execute the instructions to obtain direction data indicating a viewing direction associated with a user of a playback device. The one or more processors are configured to execute the instructions to determine a resolution setting based on a similarity between the viewing direction and the direction of the sound source. The one or more processors are also configured to execute the instructions to process the audio data based on the resolution setting to generate processed audio data.

An illuminator usable for illuminating a display panel is disclosed. The illuminator uses a pupil-replicating waveguide to expand a pair of light beams propagating in the waveguide. The light beams may be coupled at a same edge and/or at opposite edges of the waveguide, and are configured to fill each other's dark spots between out-coupled beam portions of the light beams. To improve the illumination uniformity, the two light beams may be orthogonally polarized, and the out-coupling grating strength may be spatially varied along the waveguide.

The appearance of content that guides a traveling path of a vehicle is improved. When a display control ECU shifts a path line, which is expressed by path line information included in map information for navigation, in a vehicle transverse direction in accordance with a distance along the vehicle transverse direction between a position of a vehicle and the path line, the display control ECU causes content to be displayed on a HUD at a corresponding position on the shifted path line.