Alps Alpine

A display device configured to be capable of displaying an aerial image by using retroreflection includes: a light source; a retroreflective member; and an optical element disposed at a position where light from the light source is incident, in which the optical element includes: a plurality of reflective members formed using a plurality of slits; and a decorative layer disposed on a first reflective surface of each of the plurality of the reflective members, the first reflective surface being opposite to a second reflective surface of each of the plurality of the reflective members, the second reflective surface of each of the plurality of the reflective members reflects the light from the light source toward the retroreflective member, the first reflective surface reflects external light incident via the decorative layer, and the plurality of the slits transmit light retroreflected by the retroreflective member to form the aerial image.

A display apparatus capable of displaying an aerial image by utilizing retroreflection is provided. The display apparatus includes a light source; a retroreflective member; and an optical element disposed at a position where light from the light source is incident, the optical element including a plurality of reflective areas formed via a plurality of slits. The plurality of reflective areas reflect the light from the light source toward the retroreflective member, and the plurality of slits transmit light retroreflected by the retroreflective member to form an aerial image.

A display device includes: a translucent light-guiding substrate including a first main surface, an end surface intersecting the first main surface, and a second main surface located on an opposite side of the first main surface; a light source including a light emitting surface and arranged to face at least one of the second main surface or the end surface; and a reflective layer arranged on the first main surface in a region overlapping with the light source in a top view. The translucent light-guiding substrate includes a light diffusion and scattering portion. A pattern corresponding to the light diffusion and scattering portion is displayed in the top view.

A display device capable of displaying an aerial image by using retroreflection. The display device includes: a light source; a polarizing beam splitter arranged at a position on which light from the light source is incident; a retroreflecting member; a λ/4 plate arranged on a surface of the retroreflecting member; and a light attenuating filter arranged on the surface of the A/4 plate. The retroreflecting member receives light reflected by the polarizing beam splitter and transmitted through the light attenuating filter and the A/4 plate, and the polarizing beam splitter transmits light retroreflected by the retroreflecting member and transmitted through the λ/4 plate and the light attenuating filter to form the aerial image.

A display system includes a patterned covering surface having a plurality of holes; a display device having a display surface covered by the covering surface; and an image processing apparatus configured to process image data displayed on the display device. The image processing apparatus includes a correction data storage to store correction data generated by gradation-inverting a luminance distribution that appears on the covering surface when the entire display surface of the display device is displayed in a uniform color; and an image processor to correct the image data to be displayed on the display surface based on the correction data that is read from the correction data storage within a luminance dynamic range that is determined based on a transmittance of the covering surface and an image luminance of the image data.

A sliding door device includes a support part provided with a rear door, a front door, and a drive mechanism to independently slide the rear door and the front door, wherein the drive mechanism sets a closed mode, a first open mode, and a second open mode, the rear door is provided with a rear outer abutment and a rear inner abutment spaced apart in a sliding direction, the front door is provided with a front outer abutment and a front inner abutment spaced apart in the sliding direction, the support part is provided with one or more guide parts extending in the sliding direction, the rear outer abutment and the front inner abutment move along a same guide part among the one or more guide parts, and the front outer abutment and the rear inner abutment move along a same guide part among the one or more guide parts.

A display system includes a patterned cover part having a large number of micropores; a display device including a display part covered by the patterned cover part; and an image processing device configured to process image data to be displayed on the display device. The image processing device includes a memory configured to store correction data generated by performing gradation inversion on data of a luminance distribution that appears on the patterned cover part when an entirety of the display part of the display device is uniformly displayed in a single color, and by subjecting the inverted data to processing by a low-pass filter, and a processor coupled to the memory and configured to correct the image data to be displayed on the display part, based on the correction data read out from the memory.

A device for detecting a user operation on an electrocapacitive sensor is provided, the device including: the electrocapacitive sensor; a lighting device positioned near the electrocapacitive sensor; a RAW detection part configured to detect a value of an electrostatic capacitance of the electrocapacitive sensor as a RAW value; a baseline setting part configured to set a baseline that serves as a reference value for the electrostatic capacitance of the electrocapacitive sensor while user operation detection is at work; a lighting controller configured to turn on the lighting device when, during a period in which the lighting device is turned off, the RAW value becomes less than a difference between the current baseline and a first threshold Th1; and an operation detector configured to detect the user operation on the electrocapacitive sensor when the RAW value is less than the difference between the current baseline and a first threshold Th1.

An acoustic system includes a speaker; a driver configured to drive the speaker by a drive signal generated from an audio signal to be input; and a displacement estimator. The speaker includes a first magnetic gap, a second magnetic gap overlapping the first magnetic gap as viewed in an axial direction of the speaker, and a first voice coil and a second voice coil that are fixed to a vibration system of the speaker configured to vibrate in the axial direction, such that the first voice coil and the second voice coil are positioned in the first magnetic gap and the second magnetic gap as viewed in the axial direction.

A display device for displaying a floating aerial image using retroreflection includes a light source, a beam splitter, at least first and second retroreflection members disposed along different planes, and at least first and second phase plates disposed on respective surfaces of the first retroreflection member and the second retroreflection member, wherein the beam splitter is configured to reflect light from the light source to the first and second retroreflection members, and to transmit light reflected by the first and second retroreflection members so as to form the floating aerial image, and a slow axis of the first phase plate has an angle difference with respect to a slow axis of the second phase plate such that a difference between a phase difference of the light transmitted through the first phase plate and a phase difference of the light transmitted through the second phase plate becomes small.