Abstract: (Object) It is possible to make a display area less perceivable to a user. (Means of Achieving the Object) An HUD device (i.e., the HUD device of the practical example 1) is a display device for displaying in a display area a virtual image of at least a part of a sign that moves. The display device includes a displaying system configured to form an image of the sign that moves with light in a region including an image region (i.e., a predetermined region), and to irradiate a front windshield (i.e., transparent/reflective member) with light that forms at least a part of the image, the part of which is in the image region, such that the virtual image of the at least a part of the image is displayed in the display area. The displaying system includes an FPGA 600 (i.e., control device) that is capable of controlling a characteristic of the image in accordance with position of the virtual image relative to the display area.

Abstract: An information display apparatus irradiates a transmissive reflection member with light for forming an image so as to make a virtual image of the image visible on the transmissive reflection member. The information display apparatus includes a memory, and a processor coupled to the memory and configured to control, upon a change in depth of a scene position at which to superimpose the virtual image, a degree of change in a part or an entirety of the virtual image to be displayed, differently from a degree of the change in depth.

Abstract: A display device mountable on a mobile object includes an image forming unit to form an image with light and a light guide to guide the light forming the image to a transmission and reflection member to cause a virtual image of the image be display within a display area. The virtual image overlaps an object outside the mobile object. The image is formed such that a vanishing point of the virtual image being displayed is displaced from a vanishing point of the object.

Abstract: An imaging system includes a plurality of imaging bodies, a moving part, and an imaging control unit. Each of the imaging bodies includes a first optical element that images a range containing a hemisphere that is centered at an optical axis and oriented in a first direction of the optical axis, and a second optical element that images a range containing a hemisphere that is centered at the optical axis and oriented in a second direction opposite to the first direction. The imaging bodies is arranged in a direction orthogonal to the optical axis. The moving part moves the imaging bodies on a straight line. The imaging control unit is configured to cause the imaging bodies to perform imaging in synchronization with each other, and acquire a taken image from each of the imaging bodies.

Abstract: A display device includes an intermediate-image formation unit configured to form an intermediate image on a screen, a projection unit configured to project the intermediate image toward a transmission/reflection member to display a virtual image, a reception unit configured to receive virtual image information about the virtual image, and a correction unit configured to rotate the intermediate image within the screen to correct a defect of the virtual image in accordance with the virtual image information.

Abstract: An information providing apparatus includes one or more processors; and a memory storing instructions, which when executed by the processors, cause the processors to acquire, by a display unit, information on a predetermined position outside a moving body to display an information providing image for providing information associated with the predetermined position as a virtual image; and control the display unit to change a display position of the information providing image according to movement of the moving body. The display position of the information providing image is changed such that a deviation amount between the predetermined position and a position at which a straight line passing through a reference point within the moving body and the display position of the information providing image reaches a surface on which the moving body is moving decreases as a distance between the moving body and the predetermined position decreases.

Abstract: An image display apparatus includes an optical system to display an image; a first camera to take a picture of an object at the same position as or near a position of the image; a second camera to take a picture of a head of a viewer; and at least one processor to analyze the picture of the head of the viewer taken by the second camera to detect a position of a visual point of the viewer, wherein the at least one processor controls the image in response to determining overlap of the object with the image when viewed from the position of the visual point of the viewer.

Abstract: An information providing apparatus installed in a moving body includes one or more processors, and a memory, the memory storing instructions, which when executed by the one or more processors, cause the one or more processors to display, by a display unit, an information providing image as a virtual image, and control the display unit to change a display position of the information providing image. The information providing image includes a first information providing image and a second information providing image, and the display unit is controlled such that a changing rate of a display position of the first information providing image differs from that of a display position of the second information providing image, and the changing rates of the display positions of the first and the second information providing images both increase as a moving velocity of the moving body increases.

Abstract: An information display apparatus for projects of one or more images onto a transmissive reflection member. The information display apparatus includes a memory, and a processor coupled to the memory and configured to adjust brightness of the one or more images to be displayed, such that, in a display region capable of displaying the one or more images, L_B/L_P that is a value obtained by brightness L_P of a region other than the one or more images to be displayed and background brightness L_B behind the region other than the one or more images becomes greater than or equal to a predetermined value.

Abstract: An information display apparatus irradiates a transmissive reflection member with light for forming an image so as to make a virtual image of the image visible on the transmissive reflection member. The information display apparatus includes a memory, and a processor coupled to the memory and configured to control, upon a change in depth of a scene position at which to superimpose the virtual image, a degree of change in a part or an entirety of the virtual image to be displayed, differently from a degree of the change in depth.

Abstract: A display device includes an intermediate-image formation unit configured to form an intermediate image on a screen, a projection unit configured to project the intermediate image toward a transmission/reflection member to display a virtual image, a reception unit configured to receive virtual image information about the virtual image, and a correction unit configured to rotate the intermediate image within the screen to correct a defect of the virtual image in accordance with the virtual image information.

Abstract: A display device mountable on a mobile object includes an image forming unit to form an image with light and a light guide to guide the light forming the image to a transmission and reflection member to cause a virtual image of the image be display within a display area. The virtual image overlaps an object outside the mobile object. The image is formed such that a vanishing point of the virtual image being displayed is displaced from a vanishing point of the object.

Abstract: A head-up display (HUD) mountable on a vehicle includes circuitry. The circuitry is configured to obtain a detection result indicating a position of an object relative to the vehicle, as the vehicle travels; and control a display system to display, based on a detection result, an indicator indicating the position of the object as a virtual image within a display area, while changing an orientation of the indicator according to the position of the object.

Abstract: An information display device mountable on a vehicle, a vehicle apparatus, and a method for displaying an image to a driver of a vehicle. The information display device includes a controller configured to display information including information display related to a route along which the vehicle is to travel as a virtual image in a display area, and alter properties and characteristics of the information display being displayed in the display area. Alternatively, the controller is configured to display information including information display related to a route along which the vehicle is to travel as a virtual image in a display area, and switch between showing and hiding the information display being displayed in the display area. The vehicle apparatus includes the information display device and a vehicle on which the information display device is mounted.