The invention relates to an optical device (FILT) for filtering light received, by polarisation or mechanically, from a medium presenting a graphic and/or textual content, characterized in that cycles of opening and closing a vision space, in a visible light spectrum, are realized periodically using the optical device (FILT) at a preset frequency Fd and in that the successive open periods each have a duration (T1) comprised in an interval of values ranging from 15 to 35% of the duration (T) of the realized cycles.

Disclosed are an image processing method and an apparatus for performing the same. An image processing method according to one embodiment comprises the steps of: acquiring information about sensing a user; and displaying a back-projection image obtained by back-projecting at least one object that is visible through a transparent flat plate onto the transparent flat plate on the basis of the information.

A wearable display device suitable for use in an augmented reality environment is disclosed. The wearable display device can include a projector configured to project light through diffractive optical elements that then distributed the light to multiple display regions. Each of the display regions can be arranged to project light out of the wearable display device towards an eye of a user. Since each of the display regions are positioned in different locations with respect to an eye of a user, the result is that each display region directs light in a different direction. In this way the apparent field of view for a user of the wearable display can be substantially increased.

The image display device includes an image generating unit that emits first image light, a pupil expanding element that expands a diameter of a light flux included in the first image light from the image generating unit to obtain second image light, a first light condensing optical system that condenses the second image light and forms an intermediate image, and a second light condensing optical system that condenses light from the intermediate image and generates a virtual image on eye of a viewer, in a plane including at least the image generating unit, the pupil expanding element, and the eye of the viewer, a maximum emission angle of the first image light is smaller than a maximum viewing angle of the virtual image, and the diameter of the light flux included in the second image light is greater than that of a light flux included in the virtual image.

A head-mounted display system includes a head-mounted display unit and a positioning and stabilising structure structured and arranged to hold the head-mounted display unit in an operational position over a user's face in use. The positioning and stabilising structure includes a rear support structure adapted to contact posterior regions of a user's head and a forehead support connector, which includes a forehead support strap, which extends generally along and in the direction of the sagittal plane and connects the rear support structure to a superior edge region of the head-mounted display unit. The forehead support connector further includes a forehead support rigidiser that provides rigidification to a portion of the forehead support connector.

A system and method for generating compact light-field displays through varying optical depths provides digital content in a more effective and efficient manner. The system includes a field-evolving cavity with a cavity exit pupil, a relay mechanism, and a system enclosure with an enclosure exit pupil. The field-evolving cavity modifies the light-field displays before outputting the light-field displays with the cavity exit pupil. More specifically, the field-evolving cavity includes at least one display panel, which initially generates the light-field displays, and at least one optical-tuning mechanism, which subsequently modifies the light-field displays to varying optical depths. The system enclosure houses the field-evolving cavity and the relay mechanism. The relay mechanism directs the light-field displays from the cavity exit pupil to the enclosure exit pupil, which outputs the light-field displays to a user.

To provide an HMD that provides a wearing comfort and a high degree of detachability regardless of the size of the head of a user. A head-mounted image display apparatus according to an embodiment of the present technology includes a display-section body, a holding section, and a weight section. The display-section body displays an image in front of eyes of a user. The holding section is mounted on a head of the user, and includes a first arm that movably holds the display-section body. The weight section includes a weight, and a second arm that is provided to the holding section and movably holds the weight; and is balanced with the display-section body in the holding section.

A glass sheet of the present invention is characterized in that: the glass sheet has a refractive index nd of from 1.55 to 2.30; the glass sheet has an inclined surface in at least a part of an end surface; an angle formed by the inclined surface and a principal surface is from 5° to 85°; and the inclined surface has a surface roughness Ra of 1 μm or less.

A modulator of a distance measuring sensor unit 102 has a photographing pattern that includes a plurality of patterns different from each other, and modulates intensity of light. A gesture detecting unit divides image data obtained by receiving light transmitted through the modulator by the image sensor; restores an image by calculation based on a developing pattern corresponding to the photographing pattern in a divided unit; and obtains an image for detecting gesture of a user. This makes it possible to obtain an image of an object in an outside world without using a lens for forming an image. Therefore, it is possible to reduce a load on a user when the user wears the apparatus.

A head-mounted display system includes a head-mounted display unit and a positioning and stabilising structure structured and arranged to hold the head-mounted display unit in an operational position over a user's face in use. The positioning and stabilising structure includes a rear support structure adapted to contact posterior regions of a user's head and a forehead support connector, which includes a forehead support strap, which extends generally along and in the direction of the sagittal plane and connects the rear support structure to a superior edge region of the head-mounted display unit. The forehead support connector further includes a forehead support rigidiser that provides rigidification to a portion of the forehead support connector.