Sony Corporation

Sony Group Corporation

Sony Cororation

Katsuyuki Akutsu

Hiroshi Mukawa

Satoshi Nakano

Teppei Imamura

Takuji Yoshida

Hirotaka Akao

Nobuaki Kuribara

Nobuhiro Kihara

Shingo Ohkawa

Hideo Nagasaka

Masanori Iwasaki

Akio Machida

Daisuke Ueda

Nobuhiro Suzuki

Itaru Shimizu

Takashi Mizusawa

Takashi Oku

Kazuma Aiki

Takanobu Omata

Yusuke Kajio

Kazutatsu Tokuyama

Ryo Ogawa

Mieko Kuwahara

Hideo Nagasaki

Daisuke Tsukuda

There is provided an image display apparatus that includes an image forming apparatus, an optical element arranged in front of a face of an observer, and a movement control apparatus. When a region situated on the side of the ear of the observer, as viewed from the optical element, is referred to as a region situated behind the optical element, the image forming apparatus is in the region situated behind the optical element. An image exiting the image forming apparatus obliquely enters the optical element from the region situated behind the optical element, and is reflected off the optical element to reach the pupil of the observer. When there is a change in the position of the pupil of the observer, the optical element is moved using the movement control apparatus, and the position of the image exiting the image forming apparatus is controlled using the movement control apparatus.

Image display apparatus and display apparatus

To provide a display apparatus that makes it possible to further improve a performance in controlling video presentation according to characteristics of an eyeball of a user. A display apparatus is provided that includes a light source; a processor that performs processing on a distribution of characteristics of an eyeball; a monitoring section that monitors a state of the eyeball; a matching section that performs matching on the distribution of the characteristics of the eyeball and the state of the eyeball; and an irradiator that irradiates a specified position on a retina with video display light emitted by the light source.

Display apparatus and display method

The present technology provides an image projection apparatus including a pupil information acquisition section that acquires a pupil area or size, and an output control section that controls an output of image display light being collected around the pupil and irradiated on a retina on the basis of the pupil area or size acquired by the pupil information acquisition section. In addition, the present technology provides an image projection method including a step of acquiring pupil information to acquire a pupil area or size, a step of controlling an output of the image display light collected around a pupil and irradiated to a retina on the basis of a pupil area or size acquired in the step of acquiring pupil information, and a step of outputting image display light that irradiates the retina with the image display light at the output controlled in the step of controlling the output.

Image projection apparatus, image projection method, image display light output control method by acquiring pupil area or size

In some embodiments, a head mounted display is provided, comprising a light guide, at least first and second diffraction gratings, alignment marks Aand Bassociated with the first diffraction grating, and alignment marks Aand Bassociated with the second diffraction grating. The first diffraction grating may be disposed on a first surface of the light guide, the first surface facing away from a light input. The second diffraction grating may be disposed on a second surface of the light guide, the second surface facing towards the light input. The second diffraction grating may be adapted to diffract at least some of the light input into the light guide, and the first diffraction grating may be adapted to diffract at least some light transmitted through the light guide back into the light guide.

Optical device, head mounted display, assembling method for the same, holographic diffraction grating, display device, and alignment device

To provide a display device in which the brightness of the image viewed by the observer is bright, and the brightness of the image is as uniform as possible. The display device according to the present invention includes a frameand an image display device, the image display deviceincludes an image forming apparatusand an optical device, the optical deviceincludes a light guide plate, a first deflection unitconfigured with a first hologram diffraction gratingand a second hologram diffraction grating, and a second deflection unitconfigured with a third hologram diffraction grating, and slant angles and pitches of the first hologram diffraction grating, the second hologram diffraction grating, and the third hologram diffraction gratingsatisfy a predetermined relation.

Optical device and display device

A display device includes: a frame to be mounted on a head of an observer; and an image display device attached to the frame. The image display device includes: an image forming device; a light guide plate; a support substrate; a first deflection unit; a second deflection unit; and an optical member attached to the support substrate, in which light from the image forming device is deflected at the first deflection unit, propagated inside the light guide plate by total reflection, deflected at the second deflection unit, and incident on the optical member, and the optical member emits the incident light toward a pupil of an observer. The display device further includes a movement device that moves the support substrate with respect to the light guide plate in order to change a relative positional relation between the second deflection unit and the optical member.

Image display device, display device, and adjustment method for display device

An optical device includes: a light guide plate receiving, for each of N types of wavelength bands, a plurality of parallel light beams with different incident angles each corresponding to view angles, and guiding the received parallel light beams; a first and a second volume hologram gratings of reflection type having a diffraction configuration which includes N types of interference fringes each corresponding to the N types of wavelength bands, and diffracting/reflecting the parallel light beams. The optical device satisfies for each wavelength band, a relationship of 'P&#x3e;L', where 'L' represents a central diffraction wavelength in the first and second volume hologram gratings, defined for a parallel light beam corresponding to a central view angle, and &#x2018;P&#x2019; represents a peak wavelength of the parallel light beams.

Optical device and virtual image display

An image display device includes an image generating device, a light guide unit which includes a light guide plate and first and second deflection sections, and a light beam extension device which extends light incident from the image generating device, along a Z direction when an incident direction of light incident on the light guide plate is set to be an X direction and a direction of propagation of light in the light guide plate is set to be a Y direction, and emits the light to the light guide unit, wherein the light beam extension device includes a first reflecting mirror on which light from the image generating device is incident, and a second reflecting mirror which emits light incident from the first reflecting mirror to the light guide unit, and each of the first and second reflecting mirrors has a light reflecting surface having a sawtooth-shaped cross-sectional shape.

Light reflecting member, light beam extension device, image display device, and optical device

An image display device includes an image generating device, a light guide unit, and a light beam expanding device. The light guide unit includes a light guide plate, a first deflector, and a second deflector. The light beam expanding device expands a light beam incident from the image generating device along the Z direction and outputs the light beam to the light guide unit when the incident direction of light incident on the light guide plate is defined as the X direction and the propagation direction of light in the light guide plate is defined as the Y direction. The light beam expanding device is composed of a first reflective mirror on which light from the image generating device is incident and a second reflective mirror on which light from the first reflective mirror is incident and that outputs light to the light guide unit.

Light beam expanding device, image display device, and optical device

An image display device with an image display element; an optical system; an optical waveguide having a light incident port at a first portion of the optical waveguide and a light outgoing port at a second portion of the optical waveguide, the optical waveguide configured to (a) receive light from the image display element via the optical system and (b) output the light via the light outgoing port; a light shielding element; a first element that deflects light received through the first portion of the optical waveguide; and a second element that deflects light conveyed in the optical waveguide to output the light through the second portion of the optical waveguide, wherein, the first portion and the second portion are at different positions along the optical waveguide, and the first element is between the light incident port of the optical waveguide and the light shielding element.

Optical device, and virtual image display

A virtual image display device with an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.

The image displaying apparatus includes an image production apparatus, a first light conduction section and a second light conduction section. The first light conduction section includes a first light conduction plate which propagates part of incident light thereto by total reflection in the inside thereof and emits the propagated light, and a reflection type volume hologram diffraction grating disposed on the first light conduction plate. The second light conduction section includes a second light conduction plate, a first deflection section and a second deflection section.

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Kanagawa, Japan

Katsuyuki Akutsu