Provided is a display device in which generation of a ghost can be restrained. A polarizing plate is disposed adjacently to a display section. A wavelength plate is disposed adjacently to the polarizing plate. A polarizing plate is disposed adjacently to a lens. A wavelength plate is disposed adjacently to the polarizing plate. A beam splitter is disposed between the wavelength plate and the wavelength plate. The beam splitter is disposed at such a position that the air-equivalent optical path length of light that is reflected by the polarizing plate and is thereafter reflected by the beam splitter from emission of the light from the display section to transmission of the light through the lens and the air-equivalent optical path length of light that is reflected by the beam splitter and is thereafter reflected by the polarizing plate from emission of the light from the display section to transmission of the light through the lens are equal.

An audio-visual system may include a housing comprising an open upper end and a storage space, an audio-visual device installed inside the housing and exposable through the open upper end, and a lifting device configured to expose or store the audio-visual device inside the housing through the open upper end. The audio-visual device may include a display, a speaker, and a processor configured to control the audio-visual system to operate in a first mode for outputting media art content while the display is stored in the housing according to a first event, operate in a second mode for outputting audio content through the speaker while part of the display is exposed through the open upper end according to a second event, and operate in a third mode for outputting a visual content while the entire display is exposed through the open upper end according to a third event.

An external scene image captured by an external scene imaging electronic camera attached to a head mounted display (HMD) is projected and displayed onto an image display screen arranged in front of the eyes of the user as a virtual image with a suitable viewing distance corresponding to the visual acuity of the user. At this time, for each object image presented in the virtual image of the external scene image, the virtual image is processed and formatted to add a predetermined degree of binocular disparity and image blur to the virtual image projected and displayed on the right and the left image display screen on the basis of a predetermined converted distance calculated from the real distance of each object. Thus, the user is given a sense of a realistic perspective for the virtual image of the external scene, free of the discomfort or unease.

An information processing apparatus (2000) includes a determination unit (2020) and a notification unit (2040). The determination unit (2020) determines whether a field of view of a second camera is correct, on the basis of a first captured image (40), a second captured image (50), and relationship information (information indicating the relationship to be satisfied between a field of view of a first camera and the field of view of the second camera). In a case in which the field of view of the second camera is not correct, the notification unit (2040) notifies that the field of view of the second camera is not correct. The first camera is provided in a head-mounted display worn by a person. The second camera is provided in a part other than the head-mounted display.

An image projection device includes: an optical component reflecting an image light beam that has been converted into a substantially parallel light by a lens and scanned by a scanner; a projection mirror irradiating a retina with the reflected image light beam; a light beam blocking unit located on a light path between the scanner and the lens and having an aperture, wherein the projection mirror has a first region and a second region having a larger light condensing power than the first region, and a light condensing power in a third region, reflecting a light beam to be emitted to the first region of the scanned image light beam, of the optical component is greater than that in a fourth region, reflecting a light beam to be emitted to the second region of the scanned image light beam, of the optical component.

An information processing device according to the present technology includes a controller. The controller is configured to acquire first position-and-pose information related to a position and a pose of hardware that is used to calibrate a line of sight, and second position-and-pose information related to a position and a pose of the hardware, the second position-and-pose information being different from the first position-and-pose information; to control a display section to display a plurality of presented gaze points including a first presented gaze point and a second presented gaze point, the first presented gaze point being presented at a first position, the second presented gaze point being presented at a second position different from the first position; to control an image-capturing section to acquire a first image of an eyeball of a user gazing at the first presented gaze point, and a first image of the eyeball of the user gazing at the second presented gaze point; to generate a plurality of pieces of calibration data using the first position-and-pose information, the second position-and-pose information, and the first images; and to perform a correction related to an optical-axis vector and a visual-axis vector with respect to the eyeball of the user, using the plurality of pieces of calibration data.

A display apparatus according to an embodiment of the present disclosure includes: a thin plate-like display cell that displays an image; M exciters that are disposed on a back surface side of the display cell, and vibrate the display cell; and a driving section that drives the display cell and the M exciters.

Both uniformity of brightness and uniformity of color of the outside world are seen via a waveguide. A video image is reflected by a partial reflection surface inside the waveguide that includes an incident surface on which video image light is incident, first and second internal reflection surfaces that propagate the video image light incident from the incident surface while totally reflecting the video image light, and are substantially parallel to each other. A plurality of partial reflection surfaces that reflect a part of the video image light propagating by being totally reflected by the first and second internal reflection surfaces, output the part of the video image light as output light from the first internal reflection surface to the outside of the waveguide, and transmit the part of the video image light being incident, and are disposed substantially parallel to each other inside the waveguide.

The present invention provides a novel head-mounted display on which a video image received through wireless communication at a predetermined frequency is displayed, a display controlling apparatus, a display controlling method, and a program. A video image receiving section (94) receives a video image from an entertainment apparatus (14) through wireless communication at a predetermined frequency. A display controlling section (96) causes the video image received through the wireless communication at the predetermined frequency to be displayed on a display section of an HMD (12) in the case where it is decided that a user mounts the HMD (12). A display controlling section (96) causes a video image acquired by using a method other than reception in the video image receiving section (94) through the wireless communication at the predetermined frequency to be displayed on the display section of the HMD (12) before the video image received by the video image receiving section (94) through the wireless communication at the predetermined frequency is caused to be displayed on the display section of the HMD (12).

A functional member-attached glass window includes a glass window to be erected on a floor surface and having a glass plate, and a functional member having a surface area smaller than that of the glass plate and arranged at a position apart from and higher than the floor surface, wherein the functional member is pasted to the glass plate via a spacer and joined to the spacer with a fastening part.