Abstract: An alert display system includes a first stereoscopic image display unit, a second stereoscopic image display unit, and a third stereoscopic image display unit that each stereoscopically display, in response to detection of an object near the vehicle by corner sensors and an approaching vehicle detector, a positional relationship between the object and the vehicle. The positional relationship between the vehicle and the object near the vehicle in the stereoscopic image displayed by each of the first stereoscopic image display unit, the second stereoscopic image display unit, and the third stereoscopic image display unit is the same as an actual positional relationship between the object and the vehicle.

Abstract: An input device recognizes that a user is placing a finger or another object toward an image formed in a space and notifies the user of the recognition. An input device includes a light guide plate that guides light received from a light source and emit the light through a light emission surface to form an image in a space, a position detection sensor that detects a pointer in a space including an imaging position at which the image is formed, and a notification controller that performs control to sense a user input in response to detection of the pointer by the position detection sensor and change a method of notification to the user in accordance with a distance between the imaging position and the pointer.

Abstract: A light guide body configured to guide light that enters therein has a light exit surface through which light from the at least one light source exits, and a plurality of linearly arranged pattern groups, each of which has a plurality of linearly arranged reflection patterns that reflect the light from the at least one light source toward the light exit surface. At least one of the plurality of linearly arranged pattern groups differs from at least another of the plurality of linearly arranged pattern groups in light amount difference. The light amount difference is a difference between an amount of light which reaches an observer of the light exit surface after being reflected by each of the plurality of linearly arranged pattern groups and an amount of light which reaches the observer through a region which is adjacent to each of the plurality of linearly arranged pattern groups.

Abstract: A presentation device has a cylindrical display panel provided with a first pattern on an outer circumferential surface thereof and supported to be rotatable in a circumferential direction, a cylindrical light guide plate arranged along an outer circumference of the display panel and supported coaxially with the display panel such that the first pattern is visible from an outer circumferential side, and a light source opposing a portion of one edge surface of the light guide plate and configured to emit visible light. The light guide plate has prisms that are formed in a diffusing surface on an inner circumferential side opposing the outer circumference surface of the display panel, reflect visible light from the light source that enters the light guide plate from the portion of the edge surface toward an exit surface on the outer circumferential side opposing the diffusing surface and arranged along a second pattern.

Abstract: A display device includes a plurality of transparent display units, each unit configured to include a light emitting surface; the display units arranged spaced apart by a predetermined distance in a direction perpendicular to the light emitting surfaces such that the light emitting surfaces are parallel to each other; and each light emitting surface outputs a monochromatic grayscale image of a mutually different color.

Abstract: A light guide plate includes a diffusing surface that diffuses incident light having a concave cylindrical surface shape with curvature in a first direction, and an exit surface having a convex cylindrical surface shape with curvature in the first direction. The light guide plate is constituted such that a pattern provided behind the diffusing surface is visible from the exit surface side. The light guide plate has an incident surface on at least one end of the light guide plate in the first direction, and prisms that are formed in the diffusing surface and reflect visible light from a light source that enters the light guide plate from the incident surface toward the exit surface. Each prism has a reflecting surface oriented toward the incident surface side, and an angle between the reflecting surface and the diffusing surface increases, the further the prism is from the incident surface.

Abstract: A display device including: a light guide plate configured to present a plurality of patterns; a plurality of light sources aligned along one sidewall of the light guide plate with each light source corresponding to a pattern among the plurality of patterns; a storage unit configured to store lighting sequence information; and a controller configured to control the turning on and off of the plurality of light sources in accordance with the lighting sequence information; the light guide plate including: an incidence surface configured to allow visible light emitted from the light sources to enter the light guide plate; and for each of the plurality of patterns, a plurality of prisms configured to reflect the visible light emitted from a light source corresponding to the pattern and entering the light guide plate from the incidence surface toward the other surface of the light guide plate.

Abstract: A display device includes a transparent liquid crystal panel configured to allow an object arranged at the rear surface to be viewed from the front surface; a first polarizer arranged on at least one of the front surface and the rear surface of the transparent liquid crystal panel; a light source; a light guide element arranged at the other of the front surface and the rear surface of the transparent liquid crystal panel; a second polarizer arranged between the light guide element and the transparent liquid crystal panel, or between the light guide element and the light source and arranged to not block at least a portion of light transmitted through the light guide element via the object; and a controller.

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 decoration device has a display panel having a cylindrical surface shape with curvature in a first direction on which a first pattern is provided, a light source to emit visible light, and a light guide plate with a diffusing surface opposes the display panel, the diffusing surface having a concave cylindrical surface shape, an exit surface opposing the diffusing surface having a convex cylindrical surface shape. The light guide plate is provided such that the first pattern is visible from the exit surface side. The light guide plate has a plurality of prisms that are formed in the diffusing surface and reflect the visible light that enters the light guide plate from the light source through an incident surface toward the exit surface. An angle between a reflecting surface of each prism and the diffusing surface increases as the distance of the prism from the incident surface increases.

Abstract: A light guide body configured to guide at least first and second light having different colors that enter the light guide body from at least one light source has a light exit surface having a light emitting region that emits the first light and the second light from the at least one light source, and a reflection region that reflects, toward the light emitting region, the first light and the second light that enters the light guide body. The reflection region has a first pattern region where a plurality of first reflection patterns that reflects the first light are arranged, and a second pattern region where a plurality of second reflection patterns that reflects the second light are arranged. When viewed from a direction perpendicular to the light exit surface, the first pattern region and the second pattern region at least partially overlapping with each other.

Abstract: A light guide body configured to guide light from a light source that enters the light guide body has a light exit surface having at least one light emitting region from which light from the light source is emitted, and a plurality of reflection patterns arranged in a reflection region of a counter surface facing the light exit surface. The reflection region is a region corresponding to the at least one light emitting region. The reflection region has at least a first reflection region that reflects light in a first direction, and a second reflection region that reflects light in a second direction differing from the first direction.

Abstract: A display device has a liquid crystal panel that switches between a transparent state and an opaque state, a first light source, a light guide plate arranged on a back surface of the liquid crystal panel and made of a transparent material, the light guide plate having an incident surface facing the first light source and an outgoing surface facing the back surface of the liquid crystal panel, propagating light emitted from the first light source and incident through the incident surface, and outputting the light toward the liquid crystal panel from the outgoing surface, and a second light source configured to illuminate an object arranged on an opposite side to the liquid crystal panel with the light guide plate interposed therebetween.

Abstract: A light guide plate, produced from material transparent to visible light, includes a plurality of prisms provided on one surface (a diffusion surface) thereof in a predetermined pattern. The plurality of prisms include a reflection surface that reflects visible light emitted from a light source and entering the light guide plate from an input surface toward another surface (an output surface). Each prism in the plurality of prisms is distributed so that the reflection surfaces of two prisms separated by a predetermined pitch are oriented in the same direction, and the reflections surfaces of two prisms that are closer than the predetermined pitch are oriented in mutually different directions.

Abstract: An anti-reflection sheet includes a transparent substrate; and a resin layer formed on a surface of a transparent substrate. The resin layer includes a first surface that faces the surface of the transparent substrate; a second surface that faces away from the surface of the transparent substrate; and a plurality of projections arranged on the second surface of the resin layer so as to form a projection layer. Each of the plurality of projections has a cross section that includes an entire center axis perpendicular to the surface of the transparent substrate. Each of the plurality of projections has a cross section that is in a shape of quadratic function. An arranged pitch of each of the plurality of projections is not more than half of a wavelength of incident light. An aspect ratio of each of the plurality of projections is 1 or less. A difference between a refractive index n1 of the transparent substrate and a refractive index n2 of the resin layer satisfies the following expression: |n1?n2|?0.05.

Abstract: An exit surface of a light guide plate includes a first position from which first emitted light is emitted within an angular range that causes the first emitted light to be applied to one eye and the vicinity thereof and a second position from which second emitted light is emitted within an angular range that causes the second emitted light to be applied to the other eye and the vicinity thereof. A straight line that passes through the first position and the center of the one eye and a straight line that passes through the second position and the center of the other eye intersect with each other.

Abstract: A light guide plate according to one or more embodiment is formed of a panel transparent to visible light, and includes: a plurality of first prisms arranged along one surface of the light guide plate and distributed in a first pattern to reflect the visible light emitted from a first light source and entering the light guide from an input surface toward another surface of the light guide plate; and a plurality of second prisms arranged in a second pattern to reflect the visible light emitted from a second light source and entering the light guide from the input surface toward said other surface of the light guide plate. Each first prism includes a reflection surface directly facing the first light source, and each second prism includes a reflection surface directly facing the second light source.

Abstract: A reflection structure configured to be disposed on a light guide body that guides a light beam incident from a light source and causes the light beam to exit from a light emitting area set in a light exit surface, having a reflection surface that reflects the light beam emitted from the light source toward the light emitting area. When the reflection structure is viewed from a direction perpendicular to the light exit surface, a pointed end is arranged in a direction orthogonal to a traveling direction of the reflected light beam, and an angle formed between the traveling direction of the reflected light beam and a normal direction of an end edge of the reflection surface connected to the pointed end is less than or equal to ?38.327x2+152.3x?94.014, wherein x is a refractive index of the light guide body.

Abstract: Means of solution: Optical protrusions 23 of nano-size for restricting reflection of light and protection columns 24 for preventing crushing of the optical protrusions 23 are provided on a surface of a film substrate 22. The protection columns 24 have a frustum shape. When a ratio of a projection area in which all of lateral surfaces of a single protection column 24 are projected on a surface of the film substrate 22 from a direction that is perpendicular to the surface of the film substrate 22 to a divided area on the surface of the film substrate 22 with respect to the single protection column 24 is defined to be a lateral surface projection occupying area rate, the lateral surface projection occupying area rate of the antireflection film is not more than 0.25% and not less than 0.01%.

Abstract: A decoration device has a display panel having a cylindrical surface shape with curvature in a first direction on which a first pattern is provided, a light source to emit visible light, and a light guide plate with a diffusing surface opposes the display panel, the diffusing surface having a concave cylindrical surface shape, an exit surface opposing the diffusing surface having a convex cylindrical surface shape. The light guide plate is provided such that the first pattern is visible from the exit surface side. The light guide plate has a plurality of prisms that are formed in the diffusing surface and reflect the visible light that enters the light guide plate from the light source through an incident surface toward the exit surface. An angle between a reflecting surface of each prism and the diffusing surface increases as the distance of the prism from the incident surface increases.