Abstract: A sound output control device includes: an orientation detecting unit configured to detect a state of orientation of a face of a user; an ambient sound obtaining unit configured to obtain ambient sound; an ambient sound reducing processing unit configured to perform, based on the ambient sound, processing of reducing the ambient sound; and a sound output control unit configured to cause sound to be output with the ambient sound reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a first state, and make audibility of the ambient sound higher than in a state where the ambient sound has been reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a second state changed from the first state.

Abstract: A head-up display device includes: a display unit that produces a display light for the left eye by modulating a first illumination light derived from superimposing first illumination light beams output from a first region of a fly eye lens and produces a display light for the right eye by modulating a second illumination light derived from superimposing second illumination light beams output a second region of the fly eye lens; and an image processing unit that produces an image for the left eye and produces an image for the right eye; and a display control unit that causes a display unit to display the image for the left eye when the first illumination light is produced and causes the display unit to display the image for the right eye when the second illumination light is produced.

Abstract: A sound output control device includes: an orientation detecting unit configured to detect a state of orientation of a face of a user; an ambient sound obtaining unit configured to obtain ambient sound; an ambient sound reducing processing unit configured to perform, based on the ambient sound, processing of reducing the ambient sound; and a sound output control unit configured to cause sound to be output with the ambient sound reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a first state, and make audibility of the ambient sound higher than in a state where the ambient sound has been reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a second state changed from the first state.

Abstract: A head-up display device includes: a display unit that produces a display light for the left eye by modulating a first illumination light derived from superimposing first illumination light beams output from a first region of a fly eye lens and produces a display light for the right eye by modulating a second illumination light derived from superimposing second illumination light beams output a second region of the fly eye lens; and an image processing unit that produces an image for the left eye and produces an image for the right eye; and a display control unit that causes a display unit to display the image for the left eye when the first illumination light is produced and causes the display unit to display the image for the right eye when the second illumination light is produced.

Abstract: A virtual image display device presents a virtual image to a user via a virtual image presentation plate. The virtual image display device includes a display unit that generates an image display light; a concave mirror that reflects the image display light and projects the image display light toward the virtual image presentation plate; and a driving mechanism that changes an orientation of the concave mirror to change an incidence angle of the image display light on the concave mirror and change a distance a from the concave mirror to the display unit in accordance with the orientation of the concave mirror.

Abstract: A virtual image display device presents a virtual image to a user via a virtual image presentation plate. The virtual image display device includes a display unit that generates an image display light; a concave mirror that reflects the image display light and projects the image display light toward the virtual image presentation plate; and a driving mechanism that changes an orientation of the concave mirror to change an incidence angle of the image display light on the concave mirror and change a distance a from the concave mirror to the display unit in accordance with the orientation of the concave mirror.

Abstract: The liquid crystal illumination device includes a light source projecting light to a liquid crystal panel, a first diffusion unit diffusing the projected light, a first light guide unit including a radially widened reflection surface and reflect the diffused light at the reflection surface, a reflecting mirror including an opening, part of the light guided by the first light guide unit being reflected and returned to inside the first light guide unit, and remaining light passing through the opening, a light collecting unit collecting light passing through an opening on the reflecting mirror, and a second diffusion unit diffusing the collected light toward the liquid crystal panel. The opening on the reflecting mirror is formed correspondingly to a display region where the liquid crystal panel display an image. A haze value of the first diffusion unit is set to a value higher than that of the second diffusion unit.

Abstract: The liquid crystal illumination device includes a light source projecting light to a liquid crystal panel, a first diffusion unit diffusing the projected light, a first light guide unit including a radially widened reflection surface and reflect the diffused light at the reflection surface, a reflecting mirror including an opening, part of the light guided by the first light guide unit being reflected and returned to inside the first light guide unit, and remaining light passing through the opening, a light collecting unit collecting light passing through an opening on the reflecting mirror, and a second diffusion unit diffusing the collected light toward the liquid crystal panel. The opening on the reflecting mirror is formed correspondingly to a display region where the liquid crystal panel display an image. A haze value of the first diffusion unit is set to a value higher than that of the second diffusion unit.

Abstract: An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.

Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.

Abstract: An image display apparatus includes an image projection unit that projects image display light, an intermediate image forming unit that forms a real image based on the image display light projected from the image projection unit, and a projection mirror that reflects the image display light, which has passed through the intermediate image forming unit, toward the surface for presenting a virtual image. The intermediate image forming unit has a first means that controls the direction of a chief ray of the image display light, which has passed through the intermediate image forming unit, and a second means that controls the light distribution angle of the chief ray.

Abstract: An image display device includes: an image generation unit that generates image display light based on an image signal; a projection unit that projects the image display light generated by the image generation unit; a combiner that presents the image display light projected by the projection unit as a virtual image; and a rotating unit that rotationally moves the combiner along at least one rotation surface, wherein the projection unit changes a direction in which the image display light is projected based on the rotational movement of the combiner.

Abstract: An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.

Abstract: An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.

Abstract: An image display device includes: an image generation unit that generates image display light based on an image signal; a projection unit that projects the image display light generated by the image generation unit; a combiner that presents the image display light projected by the projection unit as a virtual image; and a rotating unit that rotationally moves the combiner along at least one rotation surface, wherein the projection unit changes a direction in which the image display light is projected based on the rotational movement of the combiner.

Abstract: A display device for a vehicle includes: a substrate housing portion that stores a circuit substrate that outputs an image signal of an image to be displayed; an optical unit that generates and projects an image based on the image signal; and a combiner on which the image is projected, wherein the optical unit has: an optical unit main body that includes a light source and an image display element; and a projection unit that determines a projection direction, wherein the optical unit main body has a first main body surface and a second main body surface, and wherein the projection unit has two arrangement states: a first state where a projection port of the projection unit is on the side of the first main body surface; and a second state where the projection port is on the side of the second main body surface.

Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.

Abstract: An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.

Abstract: A first linearly polarized bundle of rays of incident rays is converted by optical modulation with an input video signal into a second linearly polarized bundle of rays orthogonal to the first rays in polarization. The first rays pass through a polarizer before optically modulated. A second linearly polarized bundle of rays originally involved in the incident rays is reflected by the polarizer in a first direction. The second rays obtained by the optical modulation are reflected by the polarizer in a second direction. The second rays reflected in the second direction pass through another polarizer. A first linearly polarized bundle of rays involved in the reflected second rays is reflected by the other polarizer. The reflected first rays is detected by an optical sensor that is positioned outside an optical path of the second rays originally involved in the incident rays and reflected in the first direction.

Abstract: A light source device includes a fluorescent assembly and a light tunnel. The light tunnel is located on the fluorescent assembly with no gap.