Abstract: An electronic device comprises: a transmission antenna configured to transmit transmission waves; a reception antenna configured to receive reflected waves resulting from reflection of the transmission waves; and a controller. The controller is configured to detect an object reflecting the transmission waves, based on a transmission signal transmitted as the transmission waves and a reception signal received as the reflected waves. The controller is configured to make a range of detection of the object by the transmission signal and the reception signal, variable.

Abstract: An electronic device comprises: a transmission antenna configured to transmit transmission waves; a reception antenna configured to receive reflected waves resulting from reflection of the transmission waves; and a controller. The controller is configured to detect an object reflecting the transmission waves, based on a transmission signal transmitted as the transmission waves and a reception signal received as the reflected waves. The controller is configured to set a range of detection of the object, for each frame of the transmission waves.

Abstract: A display apparatus allows a user to visually recognize a virtual image. The virtual image has luminance characteristics according to which a dependence of luminance on viewing angle changes along a certain direction.

Abstract: A liquid crystal panel includes a first transmissive member having a first face where light enters, a liquid crystal layer, and a second transmissive member having a second face where at least a part of light having passed through the first transmissive member and the liquid crystal layer exits. The second face is inclined relative to the liquid crystal layer.

Abstract: A vehicle display apparatus of the present disclosure includes a display and a reflective member. The reflective member reflects display light from the display. The display causes the display light to be incident on the reflective member as S polarized light. The reflective member is located along an incident light path of the display light from the display to a reflecting surface of a windshield of a vehicle or along a transmitted light path of transmitted light transmitted by the reflecting surface. The reflective member reflects linearly polarized incident light as circularly polarized reflected light. The vehicle display apparatus guides display light reflected at the reflective member and at the windshield to an eye box.

Abstract: An image projection apparatus includes a display configured to display an image, a first optical member, at least one second optical member configured to project the image onto the first optical member and make a virtual image of the image visible to a subject, and a controller configured to dynamically correct the image in accordance with a position of both eyes of the subject.

Abstract: A display device and a vehicle head-up display apparatus of the present disclosure include a substrate, light source devices, a transmission-type display panel, and an illumination optical system. The light source devices are disposed on the substrate. The illumination optical system guides illumination light from the light source devices to the display panel. The illumination optical system includes a first reflector, a quarter-wave plate, and a reflective polarizer. The first reflector is disposed at a different position on the substrate than the light source devices. The quarter-wave plate is disposed between the first reflector and the display panel. The reflective polarizer is disposed between the quarter-wave plate and the display panel.

Abstract: A three-dimensional projection apparatus includes a display including a display surface having a plurality of subpixels arranged in a grid along a first direction and a second direction substantially orthogonal to the first direction, an optical element configured to define a light beam direction of an image light emitted from the subpixels for each strip-shaped region of a plurality of strip-shaped regions extending in the second direction on the display surface, an optical member configured to project the image light, the light beam direction of which is defined by the optical element, so that a virtual image of the display surface is formed, and a controller configured to acquire information related to a position of an eye of a subject and to correct, in accordance with the position of the eye, the optical element and an image to be displayed by the display surface.

Abstract: An image projection apparatus includes a display configured to display an image, a first optical member, at least one second optical member configured to project the image onto the first optical member and make a virtual image of the image visible to a subject, and a controller configured to dynamically correct the image in accordance with a position of both eyes of the subject.

Abstract: A vehicular head-up display apparatus comprises a light source apparatus, a display panel, an optical member, and a controller. The display panel is configured to change illumination light from the light source apparatus into display light on a display surface. The optical member is configured to guide the display light from the display panel to a certain space. The display surface includes a first luminance area displayable at a first luminance, and a second luminance area displayable at a second luminance which is lower in luminance than the first luminance. The controller is configured to selectively display information in the first luminance area and the second luminance.

Abstract: A liquid crystal panel includes a first transmissive member having a first face where light enters, a liquid crystal layer, and a second transmissive member having a second face where at least a part of light having passed through the first transmissive member and the liquid crystal layer exits. The second face is inclined relative to the liquid crystal layer.

Abstract: A display device and a vehicle head-up display apparatus of the present disclosure include a substrate, light source devices, a transmission-type display panel, and an illumination optical system. The light source devices are disposed on the substrate. The illumination optical system guides illumination light from the light source devices to the display panel. The illumination optical system includes a first reflector, a quarter-wave plate, and a reflective polarizer. The first reflector is disposed at a different position on the substrate than the light source devices. The quarter-wave plate is disposed between the first reflector and the display panel. The reflective polarizer is disposed between the quarter-wave plate and the display panel.

Abstract: A vehicle display apparatus of the present disclosure includes a display and a reflective member. The reflective member reflects display light from the display. The display causes the display light to be incident on the reflective member as S polarized light. The reflective member is located along an incident light path of the display light from the display to a reflecting surface of a windshield of a vehicle or along a transmitted light path of transmitted light transmitted by the reflecting surface. The reflective member reflects linearly polarized incident light as circularly polarized reflected light. The vehicle display apparatus guides display light reflected at the reflective member and at the windshield to an eye box.

Abstract: A vehicular head-up display apparatus comprises a light source apparatus, a display panel, an optical member, and a controller. The display panel is configured to change illumination light from the light source apparatus into display light on a display surface. The optical member is configured to guide the display light from the display panel to a certain space. The display surface includes a first luminance area displayable at a first luminance, and a second luminance area displayable at a second luminance which is lower in luminance than the first luminance. The controller is configured to selectively display information in the first luminance area and the second luminance.

Abstract: A head-up display for a vehicle includes a light source, a display panel, and an illumination optical system. The display panel is of a transmissive type. The illumination optical system guides illumination light from the light source to the display panel. The illumination optical system includes a lens module. The lens module includes one or more lenses positioned on an optical axis of the illumination light. The light source is configured to emit the illumination light in which beams forming a larger angle with respect to the optical axis have lower brightness. The lens module has an optical property whereby, in the illumination light beams which form a larger angle with respect to the optical axis are transmitted with increased density.

Abstract: A vehicular head-up display system comprises a display panel, a semi-transmissive plate, a chromaticity acquisition unit, and a controller. The display panel has a display surface for displaying an image. The semi-transmissive plate is configured to reflect display light from the display surface and guide the light to a certain space. The chromaticity acquisition unit is configured to acquire the chromaticity of a background superimposed on a virtual image of the display surface, wherein the virtual image is to be visually recognized by an operator positioned in the certain space. The controller is configured to calculate the chromaticity of a composite display surface combining the display surface and the background, and control the chromaticity of the display surface such that a chromaticity difference between the chromaticity of the background and the chromaticity of the composite display surface is equal to or more than a certain value.

Abstract: A display apparatus allows a user to visually recognize a virtual image. The virtual image has luminance characteristics according to which a dependence of luminance on viewing angle changes along a certain direction.

Abstract: The portable terminal includes a receiving unit for selecting a channel and receiving a program, an obtaining unit for obtaining the program guide for each channel received by the receiving unit, a display unit for displaying the program guide obtained by the obtaining unit, a memory for storing setting information set up to view the program received by the receiving unit, a remaining battery capacity detecting unit for detecting the remaining capacity of the battery, and a control unit for determining the possible viewing time according to the operation mode stored in the memory and the remaining capacity of the battery detected by the remaining battery capacity detecting unit and controlling the display unit so as to identifiably display the possible viewing segment corresponding to the possible viewing time in the program guide.

Abstract: The portable terminal includes a receiving unit for selecting a channel and receiving a program, an obtaining unit for obtaining the program guide for each channel received by the receiving unit, a display unit for displaying the program guide obtained by the obtaining unit, a memory for storing setting information set up to view the program received by the receiving unit, a remaining battery capacity detecting unit for detecting the remaining capacity of the battery, and a control unit for determining the possible viewing time according to the operation mode stored in the memory and the remaining capacity of the battery detected by the remaining battery capacity detecting unit and controlling the display unit so as to identifiably display the possible viewing segment corresponding to the possible viewing time in the program guide.

Abstract: A wireless communication apparatus for transmitting a multi-carrier modulated signal is provided with at least two amplification paths A1, A2 with different power consumption and capable of amplifying the modulated signal, selection units 15, 16 for selecting one of the at least two amplification paths A1, A2, and a control unit 3 for controlling the selection units 15, 16 to select one of the amplification paths in accordance with the number of subcarriers in the modulated signal and a selected amplification path to amplify the modulated signal. It thereby efficiently reduces power consumption.