Abstract: A viewing angle can be broadened without causing degradation in resolution of a three-dimensional image by a retinal scanning display. An image display system includes a projector which displays an image in a first region by projecting an image onto a screen, and a retinal scanning display which displays an image in a second region provided in the first region by projecting the image onto a pupil of a user. A position for displaying a three-dimensional content out of the image to be displayed in the first region is determined. The three-dimensional content is displayed on the retinal scanning display when the position falls within the second region, while the three-dimensional content is displayed on the projector when the position falls outside the second region.

Abstract: A high resolution 2D-3D switchable autostereoscopic display apparatus includes: a backlight unit emitting light; a polarizer sheet changing the light emitted from the backlight unit so that the light has only a specific polarization direction; a polarization switch converting the direction of the polarization of incident light; a birefringent element array comprising a plurality of alternating first and second birefringent elements and changing the polarization direction of incident light so that the polarization of light transmitted by the first birefringent elements is perpendicular to the polarization of light transmitted by the second birefringent elements; a lenticular lens sheet separating and emitting incident light to a first eye viewing zone and a second eye viewing zone; and a display panel displaying an image.

Abstract: Disclosed are shutter glasses, a display apparatus, and control method therefore, which enables a user to control the display apparatus while wearing the shutter glasses. The shutter glasses include a communication unit which communicates with a display apparatus; a shutter which comprises a left eye shutter and a right eye shutter that are alternately open and shut; a sensor which senses a predetermined movement of the shutter glasses; and a controller which controls the shutter to be open and shut selectively based on a sync signal received from the display apparatus through the communication unit and corresponding to the 3D image, and controls the communication unit to generate and transmit a control signal controlling the display apparatus corresponding to the predetermined movement of the shutter glasses sensed by the sensor.

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: Implementations for a stereoscopic viewing device and image disc system are generally disclosed.

Abstract: According to one embodiment, a stereoscopic display device is for three-dimensionally displaying a display image to enable a viewer to view the display image by means of glasses. The device includes a receiving unit, a display memory unit, a controller unit, an adjusting unit, and a display unit. The receiving unit receives, from the glasses, glasses information used to identify an attribute of the glasses. The display memory unit stores parameter information corresponding to the received glasses information and used to control a quality of the display image when the display image is displayed. The controller unit generates image control information in accordance with the parameter information. The adjusting unit adjusts the display image based on the image control information to generate an adjusted display image. The display unit displays the adjusted display image.

Abstract: Disclosed is a multiperspective backprojection system for autostereoscopically displaying three-dimensional representations. Said backprojection system comprises a backprojection screen (2) and an image generation unit (1) which is disposed behind the backprojection screen (2) and is provided with a projector (7a to 7p) for each perspective of the three-dimensional representations. The rear face (3) of the backprojection screen (2) is fitted with a first lenticular screen plate (8) while the front face (4) thereof is equipped with a second lenticular screen plate (9). The inventive backprojection screen (2) encompasses a third lenticular screen plate (10) between the first lenticular screen plate (8) and the second lenticular screen plate (9). The three lenticular screen plates (8, 9, 10) are provided with parallel cylindrical lenses.

Abstract: Aspects of the present invention involve novel display screens comprising light diffusion and retro-reflectivity. In embodiments, a retro-reflective light diffusion screen can be used to generate a three-dimensional autostereoscopic display by generating a plurality of viewing windows wherein each viewing window depicts a unique perspective image view. In embodiments, the retro-reflective light diffusion screen comprises a transparent medium layer between the retro-reflector surface and the light diffuser layer to help reduce ghost images. In embodiments, the retro-reflective light diffusion screen comprises a lenticular layer positioned such that the light diffuser layer is between the lenticular layer and the retro-reflective surface and is also positioned so that the light diffuser layer is at a focal plane of the lenticular layer.

Abstract: Systems and methods for displaying three-dimensional (3D) images are described. In particular, the systems can include a display block made from a transparent material with optical elements three -dimensionally disposed therein. Each optical element becomes luminous when illuminated by a light ray. The systems can also include a computing device configured to generate two-dimensional (2D) images formatted to create 3D images when projected on the display block, by a video projector coupled to the computing device. The video projector is configured to project the 2D images on the block to create the 3D images by causing a set of the passive optical elements to become luminous. Various other systems and methods are described for displaying 3D images.

Abstract: An autostereoscopic 3-D image is provided in a viewing zone without the need for 3-D glasses by use of one or more projectors that project two or more images having projected exit pupils separated horizontally by no more than an average human interocular spacing onto a 3-D forming screen (which is a lenticular or a raster barrier screen) with a substantially smooth and nominally white back projection surface and a front side with multiple individual vertical elements that project left and right images so that the 3-D forming screen retro-reflects projected light on the screen received from a light source back to the light source.

Abstract: A stereoscopic display includes: a display panel in which sub-pixels of a plurality of colors are arranged in a predetermined arrangement pattern; and a parallax barrier having a barrier pattern including transmission sections allowing light to pass therethrough and a shielding section shielding light. The arrangement pattern and the barrier pattern are configured in such a manner that stereoscopic vision is achieved when the display panel and the parallax barrier are both in a first arrangement state and in a second arrangement state, the first arrangement state and the second arrangement state having such a positional relationship that vertical direction and horizontal direction are interchanged with each other.

Abstract: A method for optimizing stereoscopic effect in a three-dimensional image is provided. The method for optimizing stereoscopic effect comprises capturing a first unpolarized beam of light representing a first image and a second unpolarized beam of light representing a second image using a lens module, converting the first and second unpolarized beam of light into the first polarized beam of light and the second polarized beam of light using a filter module and adjusting separation and convergence of the lens module using a lens control module for generating an output stream.

Abstract: An optical system comprising a circular image strip comprising an inner image strip, an outer image strip, and an effective zone, and a circular lenticule configured to direct light reflected from the inner image strip to a first eye of a viewer and to direct light reflected from the outer image strip to a second eye of a viewer when the viewer views an effective zone of the circular image strip is disclosed.

Abstract: Embodiments of the present invention provide a lensless optical device for acquiring an image. The device can include a light attenuating layer having a plurality of elements, where transmittance of each of the plurality of elements is controllable, and an image detector disposed at a distance from the light attenuating layer, the image detector configured to acquire an image with light that passes through the light attenuating layer. The device also can include a light attenuating layer controller configured to simultaneously control transmittance of each of the plurality of elements independent of each other. Methods of detecting and tracking an object in a scene are also disclosed.

Abstract: A display device (500) comprises a micro-display (22) and imaging optics (24) to transmit a light beam (BO), and a diffractive beam expander (10) having an output grating (16). The combination of said micro-display (22) and said imaging optics (24) is together adapted to form a virtual image (710) which is observable through the perimeter (15) of said output grating (16) when said diffractive beam expander (10) is positioned to at least partially intercept said light beam (BO). The combination of said micro-display (22) and said imaging optics (24) may also be adapted to project said light beam (BO) onto an external screen (600) in order to display a real image (610). The display device (500) may comprise a movable optical component (10, 380) to switch the device (500) from a virtual display mode to a projecting mode.

Abstract: Optical axes S of eyepiece lenses 15 are parallel to each other and are perpendicular to surfaces of electronic image display panels 12. The optical axes S pass through central parts X of the electronic image display panels 12 that are main observation points of an observer, i.e., an assistant B. When observing the electronic image display panels 12, visual axes of the eyes P of the assistant will not form large angles with respect to the electronic image display panels 12, and therefore, the assistant B can stereoscopically observe electronic images displayed on the electronic image display panels 12 at an original binocular parallax provided by an objective lens 5 of an operating microscope 2. As results, the assistant feels no eye fatigue or headache even when observing the images for a long time.

Abstract: Aspects of the present invention involve novel three-dimensional display systems. Multi-view-window-based display systems are used to generate floating three-dimensional displays. In embodiments, an optical focusing element is positioned at a distance that is greater than or equal to the focal length of the optical focusing element from the viewing windows to form projected viewing windows through which a user can see a floating 3D image. In alternative embodiments, an optical focusing element is positioned at a distance that is less than the focal length of the optical focusing element from the viewing windows to form a rear-projection-like three-dimensional display system. In embodiments, a retro-reflective light diffusion screen is used in the multi-view-window-based display systems.

Abstract: An optical system for transmitting a stereoscopic image to a right eye and a left eye of a user is disclosed. The system comprises an optical relay device, having a light-transmissive substrate, an input grating, a left output grating and a right output grating. The optical relay device is designed and constructed such that light is diffracted by the input grating, propagates within the light-transmissive substrate via total internal reflection, and diffracted out of the light-transmissive substrate by at least one of the left and right output gratings. The system further comprises an image generating system, optically coupled to the input grating and configured for providing collimated light constituting a left-eye image and a right-eye image wherein the left-eye image is parallactically related to the right-eye image.

Abstract: A 3-D image observation apparatus includes a reflection type image display panel that has a digital micro mirror device, a magnifying optical system, and at least two light sources. The light sources are positioned at different locations relative to the reflection type image display panel, with the micro mirrors of the digital micro mirror device being variable in tilt angle such that light from a first light source is reflected to the left eye of an observer when the left image is displayed on the display panel in a time-division manner, and light from a second light source is reflected to the right eye of the observer when the right image is displayed on the display panel in a time-division manner. In this manner, one does not need to wear special glasses in order to experience a wide-angle, 3-D viewing experience.

Abstract: An image display apparatus includes: a left-eye light source (101) that outputs a left-eye image constituting an original image in whole or in part; a left-eye deflection unit (104) that deflects, toward a left eye of the user, the left-eye image outputted by the left-eye light source (101); a right-eye light source (110) that outputs a right-eye image constituting the original image in whole or in part; a right-eye deflection unit (107) that deflects, toward a right eye of the user, the right-eye image outputted by the right-eye light source (110); and a control unit (105, 111) that controls the left-eye light source (101) and the right-eye light source (110) such that the left-eye image and the right-eye image are outputted which are different from each other in at least one of pixel position, image shape, image size, image resolution, and display frame rate so that the user can recognize the original image from the left-eye image and the right-eye image by an image fusion effect.

Abstract: An exemplary three-dimensional display device includes a flat panel display and a light regulating sheet positioned on the flat panel display. Light beams emitted from the flat panel display and input to the light regulating sheet are adjusted by the light regulating sheet and output from the light regulating sheet at predetermined angles relative to their input angles. The light regulating sheet includes at least one light regulating ring divided into a plurality of light regulating units. The flat panel display includes a plurality of display units corresponding to the plurality of light regulating units. Each display unit displays a two-dimensional image of an object viewed from a predetermined viewing angle position. Each light regulating unit limits the two-dimensional image to within a viewing angle range corresponding to the predetermined viewing angle position, and the two-dimensional images of the object displayed in the display units are different from each other.

Abstract: A multi-view autostereoscopic projection system using a single projection lens unit. The projection type autostereoscopic system includes: a source of graphic signals representing at least three perspective views of a 3-D object on at least three parts of a frame, the at least three perspective views being directly or reflectively projected vertically or horizontally in a predetermined order, an image projector connected to the source of graphic signals, an image screen disposed across from the image projector, and first and second parallel plane mirrors installed between a projection lens of the image projector and the image screen to be substantially parallel to a projection axis at the same distance from the projection axis such that the first and second parallel plane mirrors are separated from each other by a predetermined distance.

Abstract: A parallax barrier 3D display utilizes adjustable at least one parallax barrier for having an observer always retrieve stereo vision no matter whether horizontal or vertical movements towards the parallax barrier 3D display are made. The parallax barrier is adjustable in its width and a distance from the parallax barrier 3D display, or a parallax barrier having an appropriate width or distance may be chosen from each parallax barrier set. Therefore, the observer does not have to search for sweet spots nor keep on staying at the sweet spots for retrieving stereo vision.

Abstract: It is made possible to provide a three-dimensional image display device by which a viewing zone can be readily adjusted in the parallel-ray one-dimensional IP system, without a decrease in processing speed. A three-dimensional image display device includes: an elemental image display unit that has pixels arranged in a matrix form in a display plane, and displays an elemental image; an optical plate that is placed to face the elemental image display unit, extends straightly in a vertical direction, and controls a light ray from the elemental image display unit, the optical plate having optical apertures arranged at intervals in a horizontal direction; and an image data converting unit that converts image data so as to replace missing image data with a neighboring parallax component in same the elemental image, based on the average width of elemental images in an input image data and the optimum average width of elemental images in a three-dimensional video image to be output.

Abstract: An image display device includes a plurality of projection units, each of which having a light source section emitting one of basic-color lights, a spatial light modulation section modulating the basic-color light emitted from the light source section according to an image signal, and a projection system projecting an image based on the basic-color light modulated by the spatial light modulation section onto a screen. The projection units are arranged in an array, and the images, each of which is projected by each of the projection units, are combined on the screen to form a composite image.

Abstract: Systems and methods for displaying three-dimensional (3D) images are described. In particular, the systems can include a display block made from a transparent material with optical elements three-dimensionally disposed therein. Each optical element becomes luminous when illuminated by a light ray. The systems can also include a computing device configured to generate two-dimensional (2D) images formatted to create 3D images when projected on the display block, by a video projector coupled to the computing device. The video projector is configured to project the 2D images on the block to create the 3D images by causing a set of the passive optical elements to become luminous. Various other systems and methods are described for displaying 3D images.

Abstract: A stereoscopic image display device includes: a first display section emitting right-eye images composed of first-screen right-eye images and second-screen right-eye images; a second display section emitting left-eye images composed of first-screen left-eye images and second-screen left-eye images; a first reflecting section reflecting the first-screen right-eye images and the first-screen left-eye images; a second reflecting section reflecting the second-screen right-eye images and the second-screen left-eye images; a first screen onto which the first-screen right-eye images and the first-screen left-eye images, and on which parallax images are formed; a second screen onto which the second-screen right-eye images and the second-screen left-eye images, and on which parallax images are formed; and a parallax image selection section having a right-eye transmission section and a left-eye transmission section.

Abstract: A main controller sends a “rewrite mode” command to an engine controller. Receiving the command, the engine controller 12 sends a “roger” status. This switches the mode from a print mode to a rewrite mode. In the rewrite mode, the engine controller 12 serves as a master and the main controller 11 serves as a slave, a communication which is necessary for rewriting of firmware takes place between the two, and the firmware is rewritten.

Abstract: Medical diagnostic ultrasound stereo imaging is provided. A medical diagnostic ultrasound system operable to scan a body with ultrasound is also operable to generate a three dimensional stereoscopic view of the body. The video processing unit and/or display device create the stereoscopic display.

Abstract: The invention relates to a stereoscopic optical system (1), comprising a first optical sub-system (2L) with a number of optical elements (31L, 32L, 33L, 34L, 35L, 36L, 37L, 38L, 39L) for providing a left beam path (4L) of the stereoscopic optical system (1), and a second optical sub-system (2R) with a number of optical elements (31R, 32R, 33R, 34R, 35R, 36R, 37R, 38R, 39R) for providing a right beam path (4R) of the stereoscopic optical system (1). At least one first optical partial element (38L) of the first optical sub-system (2L) has a first optical surface (O1), and at least one second optical partial element (38R) of the second optical sub-system (2R) has a second optical surface (O2). According to the invention, the first and the second optical surfaces (O1, O2) are partial surfaces of one common mathematical surface that is rotationally symmetrical about a common main axis (7) of the stereoscopic optical system (1).

Abstract: A multiple view directional display comprises a pixellated image display layer having a plurality of first pixels (P1) assigned to display a first image and a plurality of second pixels (P2) assigned to display a second image, and a parallax barrier aperture array (21) for directing light from the first pixels generally into a first viewing window (2) and for directing light from the second pixels generally into a second viewing window (3) not overlapping the first viewing window. The display further comprises first light directing means (31) for re-directing light emitted from a first lateral edge region (25) of each first pixel away from the second viewing window.

Abstract: A lens, an apparatus, and a system, as well as a method and article, may operate to receive a plurality of left-eye rays through a first plurality of separating facets of a lens at an image-acquisition plane, and to receive a plurality of right-eye rays through a second plurality of separating facets of the lens at the image-acquisition plane. Data acquired from the image plane may be used to construct a stereoscopic image, including a moving, panoramic stereoscopic images. Lenses, image-capture devices, and projectors may be implemented that operate using three or more viewpoints.

Abstract: A virtual input element image projection apparatus couples a suitable lens and an optical element to increase the diverging angle of a virtual input element image or generate a plurality of portions of the virtual input element image that are coupled to form the complete virtual input element image without reducing diffraction efficiency. The projection distance for generating the virtual input element image may also be shortened.

Abstract: The three-dimensional observation system of the present invention comprises an image picking-up part which has a parallax with respect to the object of observation and captures two images of the object of observation, an image display part which respectively displays the two images of the object of observation captured by the image picking-up part, and an optical system which is used to guide the two images of the object of observation displayed by the image display part to respective position in front of the left and right eyes of the observer facing the object of observation, such that the parallax direction of the image picking-up part and the parallax direction of the observer coincide, thus causing a three-dimensional image to be displayed.

Abstract: A projection system includes an image projection apparatus window and a transparent holographic screen deflecting light from the image projection apparatus into discrete, mutually spaced directions so that an area which is free from images is formed between identical images. Projected, mutually spaced holographic frames of the image is visualized by the holographic screen that includes a film layer which is partially illuminated multiple times at different pick-up angles to the same object of an image, so that the film layer has hologram images of the same object at mutually different pick-up angles. The transparent screen may include many holographic film layers, in which each film layer is illuminated once at different pick-up angles to the same object, so that each film layer has one hologram image of the object at a different pick-up angle.

Abstract: An ocular device is be used to magnify virtual and real scenes in a binocular or monocular configuration. A plurality of lenses is positioned as though each of the lenses is tangent to a surface of a first sphere having a center that is located substantially at a center of rotation of an eye of a user. A plurality of displays is positioned as though each of the displays is tangent to a surface of a second sphere having a radius larger than the first sphere's radius and having a center that is located at a center of rotation of the eye. Each of the displays corresponds to at least one of the lenses, and is imaged by the corresponding lens. A processor displays an image to the user using the plurality of displays. An input device allows the user to adjust a magnification of the image.

Abstract: A stereoscopic image displaying apparatus including: an image generating section emitting right eye image light and left eye image light as linear polarized light having parallel polarization axes; and a polarization axis controlling plate that includes first and second polarizing regions that, when the right eye image light and the left eye image light are incident onto the first and second polarizing regions, emit the incident right eye image light and left eye image light, as linear polarized light having orthogonal polarization axes or circularly polarized light having rotated polarization axes in opposite directions, where each of the right eye image generating region and the left eye image generating region includes a red-color-filter pixel, a green-color -filter pixel, and a blue-color-filter pixel, and a retardation value of the polarization axis controlling plate is uneven for alleviating color of the linear polarized light and the circularly polarized light.

Abstract: A stereoscopic display is provided. The stereoscopic display includes: an image displaying section that generates a right eye image and a left eye image and emits the same; and a phase differential plate disposed on an exit side of the image displaying section that orthogonalizes to each other or rotates reversely the polarizing directions of the right eye image and the left eye image which are incident from the image displaying section and emits the same. The phase differential plate is disposed on the image displaying section side and has an image light-antireflective film that prevents the right eye image light and the left eye image light from reflecting from the image displaying section.

Abstract: The invention relates to an autostereoscopic multi-user display comprising a focussing element and a selectable display for the time-sequential representation of 2D and/or 3D images. When viewed in the direction of the observer, said display contains a sweet-spot unit and an image matrix, which function separately from one another. The sweet-spot unit focuses a light distribution with a large surface area onto the eyes of the observer by means of a lateral sweet-spot extension, which is greater than or equal to the distance between the eyes of the observer. The sweet-spot bundle traverses the imaging matrix completely in a uniform manner on its way to the observer(s) and is thus modulated by the image content of the image matrix. The size of the sweet spot reduces the need for tracking precision. The sweet-spot unit consists of an illumination and imaging matrix.

Abstract: A method for synchronizing the recordings of two video cameras which are operated in parallel for the three-dimensional representation of an image sequence includes fading a light signal into the image area of the two cameras and simultaneously recording the light signal by both cameras. Playback of the recordings are synchronized using the recorded signals. The two video cameras may be two digitally recording video recorders.

Abstract: A three-dimensional image pickup apparatus, a three-dimensional display apparatus and a three-dimensional image pickup and display apparatus are disclosed by which high-definition three-dimensional display from a plurality of eye points of different directions can be achieved by a simple apparatus configuration. The incoming directions and the intensities of a plurality of lights incoming from different directions to a light reception section are coordinated with each other for individual pixels to form video signals. A light emission section emits lights based on a coordinated relationship between the outgoing directions and the intensities of lights to be emitted therefrom for the individual pixels. The light incoming directions and the light outgoing directions are time-divisionally selected by means of light path selection elements, and a plurality of pixels are formed to pick up and display images having a parallax.

Abstract: A display device for displaying a plurality of images in a display unit, the plurality of images including pixels including subpixels of different colors; a display unit capable of arranging the pixels in horizontal and vertical directions; an image data combining circuit capable of combining image data for the plurality of images; and an image separation member that spatially separates the plurality of images displayed on the display unit from each other, wherein the plurality of images are displayed as rows of display pixels, wherein the alternating subpixels of the images are displayed in the horizontal and vertical direction.

Abstract: A device applicable to computers, TV sets, and projectors for converting a graphic image into a 3D image includes an image input loop, image control loop, output parity horizontal translation image IR circuit, and IR spectacles, wherein the IR spectacles create masking effect on both eyes, a CF lens is used to receive images of horizontal translation in conjunction with personal persistence of vision, and images are combined in the viewer's brain to present a 3D image.

Abstract: A lens, an apparatus, and a system, as well as a method and article, may operate to receive a plurality of left eye rays through a first plurality of separating facets of a lens at an image acquisition plane, and to receive a plurality of right eye rays through a second plurality of separating facets of the lens at the image acquisition plane. Data acquired from the image plane may be used to construct a stereoscopic image, including a moving, panoramic stereoscopic image. Lenses, image capture devices, and projectors may be implemented that operate using three or more viewpoints.

Abstract: An image processing apparatus for generating image data for displaying a stereoscopic image on the basis of an image for a left eye and an image for a right eye, the image processing apparatus includes first detecting means for detecting image pairs each taken in a continuous shooting mode among a plurality of images, second detecting means for detecting image pairs each taken consecutively within a predetermined time among the plurality of images, presenting means for presenting the image pairs detected by the first detecting means or the second detecting means to a user, and generating means for setting one of two images comprising a the image pair selected by the user among the image pairs presented by the presenting means as the image for the left eye and the other as the image for the right eye, and generating the image data for displaying the stereoscopic image.

Abstract: A three-dimensional image display unit comprising a liquid crystal parallax barrier provided on the surface of an image display unit such as a transmitting liquid crystal display unit across a transparent plate, wherein a shielding member such as a black mask for shielding the outgoing light of a light incident from the side surface of the transparent plate is provided in the vicinity of the boundary of the effective display area of the parallax barrier. The shielding member may be provided inside or outside the parallax barrier. Such a construction can prevent blur forming in the vicinity of the boundary of the effective display area or a deterioration in display quality such as insufficient black displaying at a part that should be black-displayed, thereby providing a three-dimensional image display unit giving a good display quality in the vicinity of the boundary of the effective display area even if it is enlarged in size.

Abstract: A 3-D image display comprising a backlight, a liquid crystal shutter array having an opening and a mask alternately formed therein and selectively passing light emitted from the backlight by switching the opening and the mask. A display device having left eye image information and right eye image information at a plurality of viewpoints, in which the left eye image information and the right eye image information are changed along the movement of the opening. An image according to the left eye image information and the right eye image information of a plurality of viewpoints is sequentially displayed through the opening.

Abstract: A stereogram viewing apparatus comprises a box having a cover pivotally attached thereto for pivotal movement between open and closed positions. A stereogram accommodating part holds a set of stereograms at the front of the inside of the cover. A foldable plate is disposed in the box and is provided with left and right eyepieces. The plate is foldable into a folded state to fit within the box to permit the cover to close and is movable to an unfolded state in which the plate positions the eyepieces frontward of the stereograms to enable a user to view the stereograms through the eyepieces. When the cover is in the upstanding open position, the box may be pivoted downwardly and rearwardly to an upside-down position to support the apparatus on a surface while the upstanding cover faces frontward. In this manner, the apparatus can be conveniently placed on a surface, such as a desk or the like, so that the stereograms may be viewed by a user without having to hold the apparatus in his hand.

Abstract: A three-dimensional image observation microscope system includes an imaging unit that captures images focused at different object point distances in an optical axis direction and a display unit that displays a plurality of the images captured by the imaging unit for overlaid observation along the line of sight of a viewer as a three-dimensional image. The imaging unit includes an objective optical system that obtains an image of an object, a zoom optical system that controls the magnification of the image obtained by the objective optical system, and a plurality of image pickup devices that capture the images with a magnification controlled by the zoom optical system. Specified conditions related to focal length, numerical apertures, inclinations, magnifications and distances within the imaging unit and the display unit are satisfied.

Abstract: A handheld stereographic book-type device which includes a content support portion (8) configured to position and support stereographic content (1A, 1B), and a stereoscopic viewer (5) configured to enable interocular adjustment. The stereoscopic viewer includes adjustable left and right lenses and respective adjustable occluding apertures to enable perception of stereographic content configured with left and right peripheral monocular fields (FIGS. 7-9, 2DL & 2DR). A viewer pivotal chassis (3) is configured to couple the stereoscopic viewer to the content support portion (8). The viewer pivotal chassis includes a plurality of pivotal axes (3) parallel to a line which bisects the left and right lenses of said viewer to enable the user to visually scan and traverse up and down the length of said content while maintaining focus of said content therewith said viewer (5).