Abstract: An optical device includes: a light guide plate having a group of optical-path deflectors configured to change the optical path of light from a first light source to form an image in the space within a first angle range, and change the optical path of light from a second light source to form an image in the space within a second angle range, wherein the first angle range and the second angle range are separated from each other or adjoining each other.

Abstract: A light guide plate for presenting a stereoscopic image via parallax includes: a plurality of deflectors arranged in rows parallel to an incidence surface through which light from a light source enters the light guide plate, the light totally reflecting inside the light guide plate while being guided therethrough, the plurality of deflectors including a reflection surface for reflecting and causing an emission surface to emit said light; and the reflection surfaces in a row of the plurality of deflectors are all oriented in the same direction with the orientation of the reflection surfaces changing for each row in accordance with distance from the incidence surface.

Abstract: A display device includes a light guide plate that guides light incident from a first light source to cause part of the light to exit from a light exit surface. The light guide plate includes a first outgoing structure region including a plurality of outgoing structures, and the plurality of first outgoing structures have maximum incident directions that make intensity of light exiting in a predetermined direction largest scattered over a first angle range.

Abstract: A light guide plate according to one or more embodiments may include a plurality of optical path changing units each converging incident light to a definite point. A stereoscopic image is formed in a space by a collection of a plurality of definite points. The stereoscopic image includes a plurality of faces not parallel to each other, the face is made up of a plurality of dots dispersedly arranged on the face, and a density of the plurality of dots on each of the faces is a value corresponding to a position of the face.

Abstract: A light emitting device is provided to a vehicle. The light emitting device includes a display portion and a light emitting portion. The display portion includes a first light source and a light guide plate that guides light from the first light source to form a first image in a space. The light emitting portion includes a second light source and a light emitting region that overlaps with the first image in a vehicle front-rear direction at a position close to the first image and emits light from the second light source to the outside of the vehicle.

Abstract: A display switching device (10) is provided, which switches a display image (P) by switching irradiation of lights from positions of a plurality of light sources (7). The display switching device includes: a lens array (6) in which a plurality of lenses are arranged; and a display part (45) including a plurality of pixel regions (45a) arranged to include a region through which a light, which is formed by condensing each of the lights emitted from the positions of the plurality of light sources (7) with each of the lenses of the lens array (6), passes. A transmittance in each of the pixel regions (45a) is set corresponding to a predetermined stationary pattern. A total area of the pixel regions (45a) in the display part (45) is 60% or less of a total area of a sum of the pixel regions (45a) and the pixel surrounding regions (45b).

Abstract: A display device includes a transparent light guide plate having an incident surface to display a plurality of patterns viewable in different directions and at least one light source facing a part of the incident surface. The light guide plate includes, on a first surface of the light guide plate, a plurality of prisms arranged along each of the plurality of patterns. The plurality of prisms have, for each pattern, reflection surfaces that reflect light emitted from the at least one light source and entering the light guide plate through the incident surface in a direction in which the pattern is viewable.

Abstract: A display device includes a light guide plate that guides light incident from a first light source to cause part of the light to exit from a light exit surface. The light guide plate includes a first outgoing structure region including a plurality of outgoing structures, and the plurality of first outgoing structures have maximum incident directions that make intensity of light exiting in a predetermined direction largest scattered over a first angle range.

Abstract: A light emitting device is provided to a vehicle. The light emitting device includes a display portion and a light emitting portion. The display portion includes a first light source and a light guide plate that guides light from the first light source to form a first image in a space. The light emitting portion includes a second light source and a light emitting region that overlaps with the first image in a vehicle front-rear direction at a position close to the first image and emits light from the second light source to the outside of the vehicle.

Abstract: A display device includes a transparent light guide plate having an incident surface to display a plurality of patterns viewable in different directions and at least one light source facing a part of the incident surface. The light guide plate includes, on a first surface of the light guide plate, a plurality of prisms arranged along each of the plurality of patterns. The plurality of prisms have, for each pattern, reflection surfaces that reflect light emitted from the at least one light source and entering the light guide plate through the incident surface in a direction in which the pattern is viewable.

Abstract: A light guide plate for presenting a stereoscopic image via parallax includes: a plurality of deflectors arranged in rows parallel to an incidence surface through which light from a light source enters the light guide plate, the light totally reflecting inside the light guide plate while being guided therethrough, the plurality of deflectors including a reflection surface for reflecting and causing an emission surface to emit said light; and the reflection surfaces in a row of the plurality of deflectors are all oriented in the same direction with the orientation of the reflection surfaces changing for each row in accordance with distance from the incidence surface.

Abstract: A display device includes a light guide plate 2 capable of displaying a plurality of patterns (21-1 to 21-9) and including an incident surface; a plurality of light sources (3-1 to 3-9) disposed opposite to the incident surface and corresponding to the plurality of patterns; a storage 5 configured to store a reference table that represents a relationship between a turn-on state number and a combination of light sources to be turned on among the plurality of light sources for each of a plurality of the turn-on state numbers; and a controller 7 configured to specify the combination of light sources to be turned on by referring to the reference table, the combination corresponding to the turn-on state number included in turn-on control information, and control turn-on and turn-off of each light source according to the combination of the light sources.

Abstract: An illumination device includes a transparent light guide plate having an end face being an incident surface and a bend between the incident surface and a distal end face opposite to the incident surface, and a light source facing the incident surface. The light guide plate includes first prisms on a first surface extending from the incident surface to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a second surface opposite to the first surface, and second prisms on a third surface extending from the distal end face to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a fourth surface opposite to the third surface.

Abstract: To achieve more natural image expression. A display device (1) is provided with a light guide plate (4) which displays a predetermined image having a tone caused by changing the amount of light emitted from each of pixel regions including one or more light exit structures (43), and the amount of light emitted from the pixel regions displaying the tone in a predetermined range is randomly set so as to be a first light amount value or a second light amount value greater than the first light amount value.

Abstract: An optical device includes a planar-image forming unit configured to emit light that forms a planar image of a predetermined shape in a space, and an outline-image forming unit configured to emit light that forms an outline image with a light intensity different from the light intensity of the planar image at the outer-edge region of the planar image.

Abstract: A display device includes a light guiding panel 2 having an incoming surface 2a formed on one of side surfaces, a plurality of light sources (3-1 to 3-4) respectively corresponding to a plurality of patterns that can be displayed, and a controller 6 for controlling on and off of the plurality of light sources.

Abstract: An optical device includes: a light guide plate having a group of optical-path deflectors configured to change the optical path of light from a first light source to form an image in the space within a first angle range, and change the optical path of light from a second light source to form an image in the space within a second angle range, wherein the first angle range and the second angle range are separated from each other or adjoining each other.

Abstract: A display switching device (10) is provided, which switches a display image (P) by switching irradiation of lights from positions of a plurality of light sources (7). The display switching device includes: a lens array (6) in which a plurality of lenses are arranged; and a display part (45) including a plurality of pixel regions (45a) arranged to include a region through which a light, which is formed by condensing each of the lights emitted from the positions of the plurality of light sources (7) with each of the lenses of the lens array (6), passes. A transmittance in each of the pixel regions (45a) is set corresponding to a predetermined stationary pattern. A total area of the pixel regions (45a) in the display part (45) is 60% or less of a total area of a sum of the pixel regions (45a) and the pixel surrounding regions (45b).

Abstract: A light guide plate formed from a panel transparent to visible light has a first incidence surface provided to form a sidewall of the light guide plate that faces a light source configured to emit visible light, and a plurality of prisms provided in a predetermined region on one surface of the light guide plate. The prisms include a reflection surface that reflects the visible light emitted from the light source and entering the light guide plate from the first incidence surface toward another surface of the light guide plate. The predetermined region is divided into a plurality of local regions corresponding to a plurality of tones in the predetermined region when seen from a predetermined viewpoint, and in each local region, the orientation of the reflection surface of the prisms distributed in the local region is established in accordance with the tone corresponding to that local region.

Abstract: A light guide plate is transparent to visible light and is formed into a plate shape. The light guide plate includes a plurality of prisms 21 provided in a first region 22 on one surface 2b of the light guide plate, each of the plurality of prisms 21 including a reflection surface 21a that reflects the visible light, which is emitted from the light source 3 and enters the light guide plate 2 through an incoming surface 2a, toward the other surface 2c of the light guide plate 2. Then, for each of a plurality of first partial regions (22-1 to 22-n) in the first region 22, at least one of a direction of the reflection surface 21a of each prism 21 arranged in the first partial region and a ratio of a total of areas of the reflection surfaces 21a of each prism 21 to the first partial region is set according to an amount of light traveling from the first partial region toward a predetermined viewpoint such that brightness of the first region 22 changes spatially irregularly as seen from the predetermined viewpoint.