There are provided a communication path specifying device, a head mounted display, a communication path specifying method, and a program each capable of reducing a time required for specifying a communication path having high communication quality. An image acquiring unit (72) acquires an image of an environment where at least either a communication device or a communication partner of the communication device is disposed. A communication path specifying unit (74) specifies a communication path for communication between the communication device and the communication partner on the basis of the image acquired by the image acquiring unit (72), the communication path passing through reflection on a reflection surface.

Described is an anti-ligature enclosure for a wall-mounted apparatus. The enclosure includes a mounting box configured to be installed at least partially on a surface of a wall and at least partially within a space behind the wall. The mounting box includes a planar frame configured to be fastened to the surface of the wall and a recessed portion extending through the surface of the wall. The enclosure includes a mounting plate configured to contact and support the wall-mounted apparatus in an outward-facing position in the mounting box. The enclosure includes a cover plate configured to be securely fastened to at least part of an outer surface of the planar frame of the mounting box with one or more cover plate fasteners. The cover plate extends over and covers the wall-mounted apparatus and the mounting plate. An outer surface of the enclosure is flush-mounted to the surface of the wall.

There is disclosed a display device comprising a display panel; an inner plate disposed on a rear surface of the display panel; a module cover disposed on a rear surface of the inner plate; a space formed between the inner plate and the module cover; and a back cover configured to form a loading portion by covering a first area provided in a rear surface of the module cover and being coupled to the first area, wherein the module cover comprises a lateral wall portion projected from a circumference of the first area toward the rear surface and configured to define a lateral surface of the loading portion; an inclined portion inclined from the lateral wall portion and extended toward the front surface; a first vent hole formed in a first lateral wall portion provided in an upper area of the lateral wall portion and configured to communicate the loading portion and the space; a second vent hole formed in a first inclined portion provided in an upper area of the first area and configured to communicate the space with the outside; and a third vent hole formed in an upper area of the module cover.

A display apparatus includes a display panel, a back cover accommodating the display panel, and a sound output unit including at least one sound output module disposed to overlap the display panel. The at least one sound output module includes a support plate including an uneven surface and a piezoelectric element attached on the uneven surface of the support plate and has a shape corresponding to the uneven surface of the support plate. Accordingly, a sound having a straight characteristic within an audible frequency domain may be output, thereby enhancing a sense of reality and an immersion of a viewer watching an image displayed by the display apparatus.

A cover window covering a display panel of a display device comprises a base member covering a display area and a non-display area of the display panel, and an inorganic layer disposed on the base member. The inorganic layer has substantially uniform thickness on the display area, and has a diffraction grating structure on the non-display area.

It is an object of the present invention to provide a configuration which are less likely to cause a distortion in an observed image when the position of the image display device in the eyeball direction of an observer is adjusted.

An image display device according to the present invention includes: an image formation device (40); and an optical system (52) that brings an image from the image formation device (40) to an eyeball (11) of an observer. 0 (degrees).sub.2<.sub.1 is satisfied where an image-formation-device first strike point (CP.sub.1) is defined as a point where an extended line of an optical axis of the optical system (52) intersects with an image exit surface of the image formation device (40), a first normal line (NL.sub.1) is defined as a normal line to the image exit surface of the image formation device (40) passing through the first strike point (CP.sub.1), an image-formation-device second strike point (CP.sub.2) is defined as a point where an extended line of a pupil center line of the eyeball (11) of the observer intersects with the image exit surface of the image formation device (40), a second normal line (NL.sub.2) is defined as a normal line to the image exit surface of the image formation device (40) passing through the second strike point (CP.sub.2), and .sub.1 represents an angle between the extended line of the optical axis of the optical system (52) and the first normal line (NL.sub.1), and .sub.2 represents an angle between the extended line of the pupil center line of the eyeball of the observer and the second normal line (NL.sub.2).p

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.

The size and weight of an eyepiece are reduced while the diameter of each eyepiece is maintained. In a head-mounted display (1) of the invention of a display region of a display device (102), an area of an image which a user views through the eyepiece (105) is an effective display region, and an area other than the area of the image which the user views is an ineffective display region, each of the display devices (102) has a shape in which the ineffective display region is cut out from the display region.

Embodiments provide a suitable viewing environment, in accordance with whether a head-mounted display is mounted or detached. A control device includes a state identification unit configured to identify whether a head-mounted display is mounted or detached, and an output control unit configured to control, in accordance with the mounting or the detachment, at least one of sound output and video output from a display device provided separately from the head-mounted display.

Embodiments provide a suitable viewing environment, in accordance with whether a head-mounted display is mounted or detached. A control device includes a state identification unit configured to identify whether a head-mounted display is mounted or detached, and an output control unit configured to control, in accordance with the mounting or the detachment, at least one of sound output and video output from a display device provided separately from the head-mounted display.