On a surface of a screen, a first direction parallel to a virtual plane and a second direction orthogonal to the first direction are defined. A basic diffusion member of the screen diffuses and transmits each light ray at a first angle in a first plane parallel to the first direction, and diffuses and transmits the light ray at a second angle larger than the first angle in a second plane parallel to the second direction. An adjustment diffusion member of the screen diffuses and transmits each light ray at an adjustment angle larger than the first angle in the first plane. The basic diffusion member and the adjustment diffusion member are stacked on each other such that a diffusion angle of each light ray by the screen in the first plane is adjusted to a target angle larger than the adjustment angle.

On a surface of a screen, a first direction parallel to a virtual plane and a second direction orthogonal to the first direction are defined. A basic diffusion member of the screen diffuses and transmits each light ray at a first angle in a first plane parallel to the first direction, and diffuses and transmits the light ray at a second angle larger than the first angle in a second plane parallel to the second direction. An adjustment diffusion member of the screen diffuses and transmits each light ray at an adjustment angle larger than the first angle in the first plane. The basic diffusion member and the adjustment diffusion member are stacked on each other such that a diffusion angle of each light ray by the screen in the first plane is adjusted to a target angle larger than the adjustment angle.

A three-dimensional volumetric display includes a light source that generates a two-dimensional image output and a transparent scattering volume, coupled to the light source on a first face of the scattering volume, that scatters the image output of the light source in a direction perpendicular to the light axis of the output of the light source; where the scattering volume comprises a three-dimensional array of printed-ink scattering elements arranged in a plurality of scattering planes tilted relative to the first face of the scattering volume.

A three-dimensional volumetric display includes a light source that generates a two-dimensional image output and a transparent scattering volume, coupled to the light source on a first face of the scattering volume, that scatters the image output of the light source in a direction perpendicular to the light axis of the output of the light source; where the scattering volume comprises a three-dimensional array of printed-ink scattering elements arranged in a plurality of scattering planes tilted relative to the first face of the scattering volume.

A device for immersive visual representations to a user of virtual scenes, inside a helmet enabling head movements, receives information related to positions of the user's eyes with respect to the helmet, determines visual generation parameters of the virtual scenes in function of that information, and provides those parameters for carrying out the immersive visual representations in the helmet based on those parameters. The device further determines the visual generation parameters so as to spatially adjust continuously the representations of the virtual scenes in function of the positions of the user's eyes. An individual head equipment comprises such a device, a helmet, at least one visual generation apparatus, and one or more sensor(s) providing the positions of the user's eyes.

This disclosure makes it possible to provide a more favorable air floating video display apparatus. According to the present invention, it is possible to contribute to Goal 3: Ensure healthy lives and promote well-being for all at all ages, and Goal 9: Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation in the Sustainable Development Goals. An air floating video display apparatus includes a display apparatus configured to display a video, a retroreflection plate configured to reflect video light from the display apparatus and display an air floating video in air by the reflected light, and an image processor configured to perform image processing to the video displayed on the display apparatus. When an air floating video including a display of an object is displayed as the air floating video displayed by the air floating video display apparatus, the image processor performs an image processing to an image of the object displayed on the display apparatus, and the image processing has input/output characteristics that convert an input image having a pixel with low luminance into an output image having a pixel with increased luminance.

This disclosure makes it possible to provide a more favorable air floating video display apparatus. According to the present invention, it is possible to contribute to Goal 3: Ensure healthy lives and promote well-being for all at all ages, and Goal 9: Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation in the Sustainable Development Goals. An air floating video display apparatus includes a display apparatus configured to display a video, a retroreflection plate configured to reflect video light from the display apparatus and display an air floating video in air by the reflected light, and an image processor configured to perform image processing to the video displayed on the display apparatus. When an air floating video including a display of an object is displayed as the air floating video displayed by the air floating video display apparatus, the image processor performs an image processing to an image of the object displayed on the display apparatus, and the image processing has input/output characteristics that convert an input image having a pixel with low luminance into an output image having a pixel with increased luminance.

A system for displaying one or more images in three dimensions. The system has a three dimensional illumination volume containing a gas that emits one or more types of visible light when at certain multi-photon excited states. The system includes lasers (e.g. lasers with beams outside of the visible wavelengths) that can be directed to intersect in the illumination volume to excite particles of the gas to a multi-photon excited state to emit visible light. Scanning the beam intersection (or multiple beam intersections) through the illumination volume generates three dimensional images. In some embodiments, the system includes lasers that can be directed to intersect in the illumination volume to excite particles to an intermediate state that absorbs at least a portion of the emitted radiation from particles excited to a multi-photon excited state.

A system for displaying one or more images in three dimensions. The system has a three dimensional illumination volume containing a gas that emits one or more types of visible light when at certain multi-photon excited states. The system includes lasers (e.g. lasers with beams outside of the visible wavelengths) that can be directed to intersect in the illumination volume to excite particles of the gas to a multi-photon excited state to emit visible light. Scanning the beam intersection (or multiple beam intersections) through the illumination volume generates three dimensional images. In some embodiments, the system includes lasers that can be directed to intersect in the illumination volume to excite particles to an intermediate state that absorbs at least a portion of the emitted radiation from particles excited to a multi-photon excited state.

Multi-layer display of content on a flexible display is provided. A roll profile of a rolled transparent flexible display is detected, the rolled transparent flexible display forming a plurality of overlapping display layers of the transparent flexible display. Content is then displayed on the plurality of overlapping display layers, where different portions of the content are displayed on different display layers of the plurality of display layers to present the content as three-dimensional content.