Abstract: An assembly for use in a microscope having an objective assembly including an aperture. The assembly includes a lens and a beamsplitter. configured to form a respective aperture image on each of two optical paths. The assembly further includes, on each optical path, a stop structure located on a plane of the respective aperture image, so as to block a portion of the respective aperture image in order to provide an exit pupil, such that a stereoscopic image of an object viewed through the microscope is produceable by the combination of the images of the object visible through each exit pupil. Image sensors are configured to capture an image visible through the respective exit pupil and to output a digital image. A digital image processor is configured to apply a correction to the respective digital image output by each image sensor, based on the position of the respective stop structure.

Abstract: A microscopic analysis apparatus including a concentrating optical system 5 that concentrates measurement light emitted from a sample in a measuring area on a first concentration point, an aperture plate having an opening located at the first concentration point, an elliptical concave mirror 8 that reflects measurement light passing through the opening and concentrates the reflected measurement light on a second concentration point, a shielding plate disposed in front of the second concentration point, a through-hole having an end surface, whose shape coincides with a shape of a cross section of a light flux of measurement light at the position, being formed in the shielding plate, and a photodetector provided at the second concentration point. In this way, it is possible to allow more measurement light to enter the photodetector without allowing light outside the measuring area to enter the photodetector.

Abstract: A display device includes: a first display unit that displays a first image at a remote position; a second display unit that displays a second image at a position different from the position of the first image; a detection unit that detects an operation performed by a user with respect to the first image; and a display control unit that adjusts a display mode for at least either one of; the first image displayed by the first display unit and the second image displayed by the second display unit, based upon the operation detected by the detection unit.

Abstract: Disclosed is a reality glasses headset device for holding an electronic device without contacting the face of a user. The headset device includes a headband, first and second arms, and a holding unit to receive an electronic device. The headband is worn around the user's head. The headband includes a plurality of holes along a first side, and a second plurality of holes along a second, opposite side. The arms are configured to pivotably connect to holes on opposite sides of the headband. The holding unit includes a frame, a lens frame unit, a plurality of aspherical lenses, and an electronic device mounting unit. The frame has a left wall attached to the first arm, a right wall attached to the second arm, a top wall and a bottom wall. The arms are configured to maintain a position of the holding unit away from the user's face.

Abstract: A viewing apparatus for producing a stereoscopic image for an observer, the viewing apparatus comprising: first and second video projectors for projecting respective ones of first and second video images of an object, the first and second images being different images which are one or both of spatially and angularly shifted in relation to the object so as to convey parallax between the images; a mirror arrangement comprising a concave mirror which receives light from the first and second video projectors, the mirror arrangement being located in relation to the first and second video projectors such that focussed images of the object are produced at the mirror arrangement; and a viewing lens for relaying exit pupils corresponding to each of the focussed images as reflected by the mirror arrangement to a viewing plane so as to be viewable at the respective eyes of the observer as a stereoscopic image without use of adapted eyewear; wherein the video projectors comprise first and second video displays which are

Abstract: Methods and apparatus f or electrically controlling a Iuminaire to alter it s appearance and illumination effects are disclosed. A luminaire (100) having a multiplexing controller controlling one or more LED light sources (110) and one or more electrically switchable optical elements (150). The light sources are switched between at least two illumination states and the optical elements are switched between at least two optical states during an illumination period. The switching sequence is fast enough not to be detected by an observer. As a result the lighting module or luminaire is perceived to have a substantially continuous light output. The multiplexing controller rapidly time sequences the states of light sources and switchable surfaces to produce visual changes to the luminaire and/or objects illuminated by the luminaire.

Abstract: A stereoscopic image display apparatus which reduces flicker and crosstalk, provides a viewing screen of high brightness without decreased resolution. The stereoscopic image display apparatus includes a liquid crystal display which has first and second image forming areas having horizontal rows of pixels, and an optical unit in which first and second polarizing areas associated with the first and second image forming areas are arranged. A right eye image is displayed on the first image forming areas and a left eye image is displayed on the second image forming areas, and these areas are alternately replaced or overwritten every time a frame is switched. Phase difference states are replaced between the first polarizing areas and the second polarizing areas of the optical unit, synchronized with replacement of the first and second image forming areas.

Abstract: Various embodiments of the present invention are directed to stereo display systems. In one embodiment, the stereo display system includes a display (402), a viewing area (404), and one or more pairs of stereo projectors (409-411). Each pair of stereo projectors corresponds to a sub-region of the viewing area. In addition, each pair of stereo projectors projects a rectified image pair onto the display so that one or more viewers located in the corresponding sub-region exclusively view the image pair, enabling the viewers in the sub-region to perceive three-dimensional images presented on the display.

Abstract: A polarization separation device includes a first end surface on which incident light is incident, a polarization separation surface that reflects an s-polarized light component and transmits a p-polarized light component, a second end surface that is arranged to be opposed to the first end surface, converts the p-polarized light component transmitted through the polarization separation surface to the s-polarized light component, and reflects the converted light component to an optical axis direction which is the same as the incident light, a third end surface from which the s-polarized light component reflected by the polarization separation surface without transmitting through the polarization separation surface is output, and a fourth end surface that is arranged to be opposed to the third end surface and from which the s-polarized light component reflected by the second end surface and the polarization separation surface is output.

Abstract: There is disclosed a laser projector and a method of processing a signal thereof. The laser projector includes a plurality of laser sources configured to generate lasers, a controller configured to control each of the generated lasers to be incident on a specific region of a screen with a time difference, and a scanner configured to scan each of the lasers on the screen.

Abstract: The invention relates to a stereovision optometry apparatus comprising: a 3D display unit for displaying 3D image; a reference 2D display unit for displaying reference 2D image; an eyepiece in opposite side of the 2D display unit configured to view the images; a reflective mirror in opposite side of the 3D display unit configured to move toward and away from the 3D display unit; and a half mirror arranged between the 3D display and the reflective mirror and disposed at a point where propagation paths of the 2D image and the 3D image intersect; wherein the 2D image penetrates through the half mirror to reach the eyepiece; wherein the 3D image penetrates the half mirror to be reflected on the reflective mirror and then the reflected image is reflected on the half mirror to reach the eyepiece.

Abstract: In a display device that provides a first observation region with a first picture and provides a second observation region with a second picture, a double image made of the first picture and the second picture is suppressed. First columns of pixels that display the first picture and second columns of pixels that display the second picture are disposed alternately with a black matrix interposed between each neighboring pair of them. A light-shielding plate having light-shielding portions and openings is disposed above the panel.

Abstract: In an embodiment, two retro-focus lens systems are configured to provide a stereoscopic image. In an embodiment, each retro-focus lens system has a low power negative lens group with a long focal length. In an embodiment, each retro focus lens system has an optical component mounted with three points. One optical component is associated with a first of the two retro-focus lenses. The three points may be loosened, such that the optical component may be adjusted in a first direction, which in turn moves the corresponding image in the opposite direction. Another optical component is associated with the other retro focus lens system. The other optical component has a second set of points that may be loosened such that the other optical component may be adjusted in a second direction that is perpendicular to the first direction, moving the corresponding image in the opposite direction from the second direction.

Abstract: An organic light emitting diode (OLED) display according to an exemplary embodiment includes a substrate main body, a plurality of organic light emitting elements formed on the substrate main body, an encapsulation thin film formed on the substrate main body thereby covering the plurality of organic light emitting elements, and a disparity barrier rib layer formed on a boundary region between the plurality of organic light emitting elements.

Abstract: The present invention discloses a stereoscopic image display system and a method of controlling the same. An eye tracking module locates current 3D spatial positions of the viewer's eyes, and generates the information of both left and right eyes' current 3D spatial positions. A control module controls a display device that can alter the direction of the light outputted, and outputs images on the display device in time multiplex mode. The light containing the left eye image is outputted to the position of left eye instead of right eye at one time point, and the light containing the right eye image is outputted to the position of right eye instead of left eye at another time point, so that a stereoscopic image is perceived according to the parallax theory. The present invention enlarges the visual range of stereoscopic image and achieves a better stereoscopic image visual experience for viewers.

Abstract: A reflecting apparatus comprising: an array of reflectors including a first subset of reflectors and a second subset of reflectors, wherein the first subset of reflectors guide light toward a first viewing position and the second subset of reflectors guide light toward a second viewing position that is different from the first viewing position.

Abstract: A stereo-image displaying apparatus including an adjustable light source module, a spatial modulator, and an image display panel is provided. The adjustable light source module is adapted for emitting a plurality of first illumination beams and a plurality of second illumination beams that are staggered along a first axis. The spatial modulator and the image display panel are sequentially disposed on the light path of the first and second illumination beams. The first illumination beam passes through the spatial modulator so that the image display panel displays a first view field image in a first frame period. The second illumination beam passes through the spatial modulator so that the image display panel displays a second view field image in a second frame period. Moreover, a method for reducing stereo-image cross-talk is also provided.

Abstract: Systems and methods for generating a true 3-D display, where each of a viewer's eyes not only sees a different scene, but the scene changes continuously as the viewer moves his/her head or change his/her position from one angular location to another angular location with respect to the display screen. In one embodiment, a system comprises a set of 2-D image projectors and a display screen. The 2-D image projectors are configured to project individual 2-D images substantially in focus on the display screen. The display screen then diffuses (or reflects) each pixel from each of the 2-D images into a small angular slice. This enables the viewer observing the display screen to see a different one of the 2-D images with each eye. Further, the image seen by each eye varies as the viewer moves his or her head with respect to the display screen.

Abstract: Photostructurable glass and ceramic materials in slabs are processed into pixelized screens having opaque baffles therein for defining therebetween light pipes in the material through which pixel light is passed and directed with limited fields of view and for stereoscopic viewing, the screens being made using various manufacturing processes included focused UV light exposure and baking of the photostructurable material.

Abstract: This invention is a novel device that displays three-dimensional moving images featuring binocular disparity and motion parallax that can be seen simultaneously by multiple viewers in different positions without requiring headgear. This device comprises: longitudinal light-guiding members that rotate around their longitudinal axes; and light-emitting members inside, or attached to, each longitudinal light-guiding member. Changes in the content of light rays from the light-emitting members are coordinated with changes in the directions of these light rays so that viewers in different positions can see appropriate three-dimensional images. Advantageous features include: no headgear required, allows multiple viewers, high image resolution, avoids pseudoscopic images, offers wide viewing range, scalable to large size displays, multi-directional motion parallax, high light efficiency, avoids head tracking, avoids reciprocal motion, avoids fluid lag, avoids ghost-like images, and avoids use of coherent light.

Abstract: It is possible to provide a three-dimensional image display apparatus which can reproduce a three-dimensional image having an appearance of solidity with a simple configuration. The three-dimensional image reproduction apparatus includes: a display device 2 for displaying two-dimensional element images having a plurality of horizontal and vertical parallax images 1 containing information on a parallax and an image at the time of reproducing a three-dimensional solid image 7; and a lens 3 for forming the three-dimensional solid image 7 at a predetermined spatial intersection from the element images displayed by the display device 2. Here, the lens 3 diffracts the element images and forms the three-dimensional image by the use of a diffraction effect when the element images are emitted from the display device 2.

Abstract: An image display device which displays an image to a viewer in front thereof without cross-talk and displays a two-dimensional image in wider space is provided. The image display device which projects an image on the viewer includes; a light source unit which emits light to the viewer; an imaging section in which an image is formed; optical means in which the light emitted from the light source unit is transmitted to enter the imaging section; and a viewing angle controller which diffuses and spreads the light directed to the left eye of the viewer in the left area from the left eye of the viewer, and the light directed to the right eye of the viewer in the right area from the right eye of the viewer.

Abstract: An image display system provides a viewer with an experience of three-dimensional imagery by presenting a composite image made up of at least two separate images. The system includes at least first and second image sources, a beam combiner, and a “background-image-occluding element” which prevents background imagery from being seen through foreground image elements. The system presents the image from one of the image sources, containing background image information, at a distance from the viewer which is greater than the distance from the viewer to the other image presented from the other image source, which contains foreground image elements.

Abstract: A three dimensional viewing assembly includes a first display, a second display, and a beamsplitter. The first display is for displaying a first image. The second display is for displaying a second image. The beamsplitter is disposed at least partially between the first display and the second display, and is configured to receive, and to optically overlay, the first and second images. The beamsplitter comprises a first surface, a second surface, and a mirror. The first surface at least partially faces the first display, and the second surface at least partially faces the second display. The mirror is disposed between the first surface and the second surface.

Abstract: Systems and methods for generating a true 3-D display, where each of a viewer's eyes not only sees a different scene, but the scene changes continuously as the viewer moves his/her head or change his/her position from one angular location to another angular location with respect to the display screen. In one embodiment, a system comprises a set of 2-D image projectors and a display screen. The 2-D image projectors are configured to project individual 2-D images substantially in focus on the display screen. The display screen then diffuses (or reflects) each pixel from each of the 2-D images into a small angular slice. This enables the viewer observing the display screen to see a different one of the 2-D images with each eye. Further, the image seen by each eye varies as the viewer moves his or her head with respect to the display screen.

Abstract: An image display system provides a viewer with an experience of three dimensional images by presenting a composite image source. The system includes first and second image sources, a beamcombiner, a lens and a reflective element. The reflective elements reflects the image of the second image source to the beamcombiner. The first and second image sources, the beamcombiner, and the single lens present a foreground image and a background image, with the background image presented at a greater distance from the viewer than the foreground image. The viewer perceives the foreground image and the background image as part of a scene having depth.

Abstract: Disclosed is a head-mounted single panel display system that uses one or more liquid crystal switches and a polarizing beam splitter to redirect images from a single microdisplay panel to the viewer's eyes. The light emanating from the display panel is first directed, using a polarizing beam splitter, into two near-identical optical imaging systems, each forming an image in the left and right eyes. For stereoscopic (3D) operation, the light is modulated such that an image is seen in only one eye at a time. By providing time sequential stereoscopic imagery at a frame rate greater than 50Hz in each eye, flicker free, full resolution 3D can be visualized.

Abstract: Three dimensional (3D) image projection is described. In one aspect, each projector of multiple projectors generate a respective composite of an image. With respect to any particular projector, the projector's corresponding composite image encapsulates multiple vertical slices of the image. Each vertical slice in the composite image represents a particular portion of the image for projection by the projector onto a specific area of multiple areas on a screen. The size of the specific area is a function of a width of a viewpoint of multiple viewpoints, wherein the viewpoint is linearly positioned with the specific area on the screen and the projector.

Abstract: Apparatus (2) for the optical manipulation of a pair of landscape stereoscopic images, which apparatus (2) comprises a housing (4), and optical re-orientation means (6) positioned in the housing (4) and for re-orienting the pair of landscape stereoscopic images between a first orientation required for human viewing and a second orientation required for recording with a single camera or for reproduction from a single screen.

Abstract: A projection-type 3-D image display device includes a single display element, a polarization conversion switch, a first image shifter, a second image shifter, a projection lens unit, a mirrored light tunnel, and a screen unit. The screen unit includes an image separation unit. The single display element emits light polarized in a first polarization direction according to an input image. The polarization conversion switch time-sequentially converts the first polarization direction of the light emitted by the display element into a second polarization direction. The first image shifter transmits the light having the first polarization direction to form a first image and refracts the light having the second polarization direction to form a second image. The second image shifter faces the first image shifter and is arranged apart from the first image shifter by a predetermined interval. The projection lens unit enlarges and projects the first and second images.

Abstract: Methods and apparatus are provided for reducing frame violations in a stereoscopic display. A stereoscopic display system for presenting a stereoscopic image to a user suitably includes one or more cameras, each providing a video image, and a video processor. A stereoscopic display includes a left module and a right module, with each module having an eyepiece and a display panel with at least one aperture located therebetween. The stereoscopic display is configured to produce the stereoscopic image on the display panels as a function of image data received from the video processor, with the apertures forming a window around at least a portion of the perimeter of the display to thereby provide a visual reference point to the user that reduces or eliminates frame violations. The stereoscopic display system may be used during aerial refueling operations, or in any other display environment.

Abstract: A viewing arrangement includes an image generator having a single, two-sided display screen having a front and a back side which display a front image and a back image, respectively, of a translucent or transparent image generated by the image generator; two eyepieces suitable for viewing the front and back images via respective eyes of a person using the arrangement; and an optical imaging system which images and transmits the front image to one eye of the person using the arrangement via the first eyepiece, and the back image to another eye of the person using the arrangement via the second eyepiece. A corresponding method includes generating an image; processing the image with an optical imaging system into front and back images; displaying the front and back images on a two-sided display; and transmitting the front and back images to first and second eyepieces.

Abstract: A virtual image display apparatus comprises a pair of optical projection systems, each having a display device, a light source and a projection lens. The images formed on the display device are projected to an image location optical system, which comprises a light collecting lens and an optical diffusion device. The light rays from the optical projection systems are reflected at a translucent reflecting means, so that the light rays are respectively collected at right and left eyes of an observing person. As a result, the images can be recognized by the person as a virtual image in the distance. Since the optical diffusion device diffuses the light rays, in such a way that the light rays to one of observing eyes may not reach the other observing eye, so that the image information of the respective light rays can be recognized by the observing person, without causing a cross-talk.

Abstract: A binocular telescope with a photographing function comprises a pair of telescopic optical systems, a photographing optical system, and a pair of reticle elements, on which reticles are formed. The reticle elements are provided in the telescopic optical systems for focusing the telescopic optical systems. The distance between the optical axes of the telescopic optical systems can be adjusted, so that the reticle images are fused. The shapes of the fused reticle images are geometrically non-coordinate with each other.

Abstract: It comprises a first prism (10, 10a, 10b), with triangular base, on which is arranged at least one second transparent prism (2, 11) the combination defining a prismatic body which is arranged on the stereoscopic pair so that, when the user's eyes (13, 14) are positioned in front of the upper face of the prismatic body, each eye visualises the corresponding stereogram (3, 4) via the upper face of the prismatic body, reproducing the three-dimensional vision effect. In an embodiment of the invention the second prism (2, 11) is triangular and provision has been made for a third prism (12, 15) of identical configuration to the above, in which case the stereoscopic photographs/images (3, 4) are divided into halves A, B, C, D which are duly arranged for achieving three-dimensional visualisation. It comprises illumination equipment (5), some lenses (8, 8a) and a directional filter (9).

Abstract: A decorative treatment for swimming pools provides underwater anaglyphs for adhesion to the pool sides and filtering stereoscopic underwater goggles for use by swimmers in viewing the anaglyphs.

Abstract: The present invention comprises a multilayer inorganic anti-reflective coating with predetermined optical properties, for application on a flexible substrate. The coating comprises a stack consisting of five material layers, whereby the third layer is a dummy layer consisting of an electrically conductive material, preferably indium-tinoxyde, which provides the coating with an adjustable electrical sheet resistance of between 25 and 2000 ?/sq without thereby influencing its optical properties. The anti-reflective coating can be applied onto a flexible substrate (e.g. a polymer film) by means of a single 12 or double pass vacuum magnetron sputtering operation.

Abstract: An autostereoscopic display comprises an SLM which is controlled to provide an image display and a signal display. A parallax optic has a first portion which cooperates with the image display to form a plurality of viewing windows. A second portion of the parallax optic forms first and second images visible to an observer to allow the observer to distinguish between a desired orthoscopic viewing zone and undesirable viewing positions such as pseudoscopic positions. The pitch of parallax elements in the second portion is one and a half times the parallax element pitch in the first portion.

Abstract: A device for generating a 3-D image includes a tubular body with liquid filled therein and two protrusion portions extrude from one side of the body. Two stereoscopically related two-dimensional pictures are located on another side opposite to the side having the two protrusion portions. A 3-D image is seen when viewing the two pictures via the two protrusion portions.

Abstract: This invention relates to a device consisting of at least two layers of transparent or translucent rigid material fixed substantially co-planar with a hollow separation between them and with at least one having a pattern, image, or design on it. Light passing through one layer will hit the pattern, image, or design and transfer a shadow onto the second layer, creating the illusion of a three-dimensional (3D) or multi-dimensional pattern, image, or design on the interior of the device. A third opaque layer or backdrop may be added to increase the depth of the visual effect, or the effect may be decreased by using a solid layer without any texture to the pattern.

Abstract: A virtual screen display apparatus includes a display arranged to generate display information and having an effective diagonal length DLC and an optical projecting element arranged to receive the display information from the display and to project and form an image, the optical projecting element having an effective F number which is defined by Fe=S1/PuD wherein S1 is a distance between the display and a principal point of the optical projecting element and PuD is a diameter of an exit pupil of the optical projecting element. A field optical element arranged to form an in-space image in a position of a virtual screen and to direct a divergent light flux from the virtual screen to a view region where the image is viewable to an observer.

Abstract: Switchable holographic optical elements (HOEs) can used in systems and methods for projecting three-dimensional images, or for projecting two-dimensional tiled images with increased size and/or resolution. One of the methods may include sequentially displaying first, second, and third color components of a first two-dimensional image at an object plane. The first two dimensional image represents a first slice of a three-dimensional image. As the first, second, and third color components are displayed, first, second and third HOEs may be activated so that the activated first switchable HOE focuses the first color component of the first two-dimensional image onto a first image plane, the activated second switchable HOE focuses the second color component of the first two-dimensional image onto the first image plane, and the wherein the activated third switchable HOE focuses the third color component of the first two-dimensional image onto the first image plane.

Abstract: A “glasses-free” autostereoscopic viewing environment based on a large-diameter, concave vacuum-controlled mirror allows the user to view and interact with a “floating” hologram-like image in real time, without the use of special peripheral devices such as shutter glasses. This technology creates the unique ability to vary focal length over a wide range, yielding superior quality stereo images. Compatibility allows PCs or high-end graphics workstations to drive the system. It also easily interfaces with most haptic devices. A telepresence embodiment allows remote viewing of a live or recorded scene while giving the user the feeling of immersion at the remote site. The remote system consists of a site sensor platform containing stereo cameras and microphones. The platform's patented ability to pan, tilt, and/or roll delivers enhanced control of the captured visual and aural images of the remote site. When captured, any telecommunications system (e.g.

Abstract: A monocentric arrangement of optical components providing stereoscopic display of a virtual image, electronically generated, line by line, from a linear image source (36) and projected, as a real intermediate image, near the focal surface (22) of a curved mirror (24) by means of a scanning ball lens assembly (100). To form each left and right intermediate image component, a separate image generation system (70) comprises a scanning ball lens assembly (100) comprising a spherical lens (46) for wide field of view and a reflective surface (102). A monocentric arrangement of optical components images the left and right scanning ball lens pupil at the corresponding left and right viewing pupil (14) of the observer (12) and essentially provides a single center of curvature for projection components. Use of such a monocentric arrangement with linear image source (36) and scanning ball lens assemblies (100) provides an exceptionally wide field of view with large viewing pupil (14).

Abstract: Apparatus (2) for the optical manipulation of a pair of landscape stereoscopic images, which apparatus (2) comprises a housing (4), and optical re-orientation means (6) positioned in the housing (4) and for re-orienting the pair of landscape stereoscopic images between a first orientation required for human viewing and a second orientation required for recording with a single camera or for reproduction from a single screen.

Abstract: The invention relates to an electronic image pickup system that enables a wide image-pickup, and ensures that even when an image is printed, sufficient image quality and clearness are obtained from the center to as far as the margin of the image and the image of a subject is depicted with a sense of extension. The electronic image pickup system comprises an image-formation optical system 10 for forming an image of a subject and an electronic image pickup device 20 located on an image side of the image-formation optical system for obtaining image information on the image.

Abstract: A stereoscopic image pair may be viewed through a plate having an appropriately-sized aperture. When the viewer's left and right eyes view the image pair through the aperture, a stereoscopic effect may result. In one embodiment, a stereoscopic video conference system may include stereoscopic cameras positioned between the viewer and the apertured plate.

Abstract: A method for an image-based rendering of light in a virtual volume is disclosed, which can provide various lighting effects in the two-dimensional image of a three-dimensional object. Furthermore, the virtual light source can be located at any position corresponding to the three-dimensional object. The light sources in the image are divided into two groups, i.e., the light sources in the rear of the three-dimensional object and the light sources in the front of the three-dimensional object. Then, each image for the illuminating effects of the light sources in the rear of the three-dimensional object is merged in sequence. The merged image of all of the light sources in the rear of the three-dimensional object is merged with the image of the three-dimensional object. Thereafter, each image for the illuminating effects of the light sources in the front of the three-dimensional object is merged in sequence.

Abstract: A semi-spherical system holding mechanism 8 such as to cover the head portion of the user is provided in the upper portion of a user holding mechanism 9 such as chair, sofa, or the like. A display apparatus 7 is fixed in the system holding mechanism 8. In the display apparatus 7, a video image displayed on a display panel 14 is enlarged by a lens 13, so that a virtual image is formed. The virtual images which are observed by the right and left eyes of the user are arranged at the same position in a space.

Abstract: A semi-spherical system holding mechanism 8 such as to cover the head portion of the user is provided in the upper portion of a user holding mechanisms 9 such as chair, sofa, or the like. A display apparatus 7 is fixed in the system holding mechanism 8. In the display apparatus 7, a video image displayed on a display panel 14 is enlarged by a lens 13, so that a virtual image is formed. The virtual images which are observed by the right and left eyes of the user are arranged at the same position in a space.