Abstract: A lens barrel detachably attached to a camera body includes a fixed tube section that has a base end installed at the camera body, and a top end, a first pitch screw section being formed on an inner peripheral surface of the top end; a movable tube section that is a tube member configured to hold a plurality of lens and has a second pitch screw section on the movable tube side formed at an outer peripheral surface, and is located so as to be movable inside the fixed tube section in such a state that the second pitch screw section is threadedly engaged with the first pitch screw section, the plurality of lens including two group of lenses, a first group and a second group, held within the movable tube section. The movable tube section having a fixed diaphragm plate that is detachable.

Abstract: A near-eye light field display device includes a display element, a microlens array and an optical element. The display element has a plurality of micro-image units and each of the plurality of micro-image units is configured to provide an elemental image beam. The microlens array is disposed in front of the display element and has a plurality of microlenses corresponding to the plurality of the micro-image units respectively. The optical element is disposed in front of the microlens array and located on a transmission path of the elemental image beams from the microlenses. An Abbe number of the microlens array is VdMLA, a refractive index of the microlens array is ndMLA, an Abbe number of the optical element is VdOE, a refractive index of the optical element is ndOE, and the microlens array and the optical element meet at least one of: VdOE>VdMLA and ndOE<ndMLA.

Abstract: Multiview displays include a backlight and a screen used to form a plurality of multiview pixels. Each multiview pixel includes a plurality of sets of light valves. The backlight includes a light source optically coupled to a plate light guide configured with a plurality of multibeam diffraction gratings. Each multibeam diffraction grating corresponds to a set of light valves and is spatially offset with respect to a center of the set of light valves toward a center of the multiview pixel. The plurality of multibeam diffraction gratings is also configured to diffractively couple out light beams from the plate light guide with different diffraction angles and angular offsets such that at least a portion of the coupled-out light beams interleave and propagate in different view directions of the multiview display.

Abstract: Multiview displays include a backlight and a screen used to form a plurality of multiview pixels. Each multiview pixel includes a plurality of sets of light valves. The backlight includes a light source optically coupled to a plate light guide configured with a plurality of multibeam elements. Each multibeam element corresponds to a set of light valves and is spatially offset with respect to a center of the set of light valves toward a center of the multiview pixel. The plurality of multibeam elements are also configured to couple out light from the plate light guide with different angles and angular offsets such that at least a portion of the coupled-out light beams interleave and propagate in different view directions of the multiview display.

Abstract: In one embodiment, a double vision display method includes: constructing a first image signal and a second image signal for a combination of image frames that includes a first raw image frame and a second raw image frame; alternately inputting the first image signal and the second image signal for each combination of image frames to a display panel; switching, when the first image signal is inputted to the display panel, a light transmission position of a liquid crystal grating according to the first image signal, to form a corresponding first double vision grating state; and switching, when the second image signal is inputted to the display panel, the light transmission position of the liquid crystal grating according to the second image signal, to form a corresponding second double vision grating state.

Abstract: A weld scanner for a real-life bridge and scanning method thereof is disclosed. The weld scanner includes a running portion and a scanning portion mounted on a scanner chassis. A front end and a tail end of the scanner chassis are both provided with a laser range finder. A magnet is arranged at a bottom portion of the scanner chassis. The scanning portion includes a probe slider, a bendable metal pipe and a probe connected in sequence. A gear is arranged on the probe slider, and the gear is meshed with a rack inside a scanner chassis chute. The weld scanner scans while the running portion moves forward along a weld, and scans a suspected defect position more carefully when a magnetic field change is detected.

Abstract: An apparatus including a light source, a first display, a first polarizing beam splitter having a first light input surface, a first light input transmission surface, a first display interface surface, and a first display projection surface, a second display, a second polarizing beam splitter having a second light input surface, a second display interface surface, and a second display projection surface, and a retarder that is positioned between the first light input transmission surface and the second light input surface is disclosed.

Abstract: A display device includes: a first display panel; a first flexible substrate on which a first driver IC outputting a driving signal to the first display panel is mounted; a second flexible substrate being apart from the first flexible substrate, at least a part of the second flexible substrate overlapping the first flexible substrate; and an insulating material disposed between the first flexible substrate and the second flexible substrate. The first flexible substrate is connected to the first display panel so that the first driver IC is on a side of the second flexible substrate. The insulating material is disposed between the first driver IC and the second flexible substrate.

Abstract: A display apparatus includes a plurality of housings connected by adjustable device for setting spacing between centers of the plurality of housings, each housing including: first image source mounted to side of housing; second image source mounted to housing angularly offset from first image source, wherein second image source includes higher resolution and narrower image field of view than first image source; optical combiner positioned in housing between first and second image sources, on which first image from first image source and second image from second image source are superimposed and made visible to user's eye; magnification lens for magnifying second image to increase image field of view; eyepiece lens for reducing focal distance between the optical combiner and the user's eye; and controller configured to control output of second image source to render colors to compensate for distortion and chromatic aberrations introduced by magnification lens.

Abstract: An image rendering apparatus and method for rendering a stereoscopic image are provided. The image rendering apparatus may estimate a disparity of an image pixel included in an input image. Based on the disparity, a viewpoint direction of the image pixel may be determined by the image rendering apparatus. The image rendering apparatus may render a stereoscopic image by assigning a pixel value of the image pixel to a display pixel having a viewpoint direction corresponding to the viewpoint direction of the image pixel, instead of generating a multiview image.

Abstract: A video endoscopic device has a camera head and two parallel optical arrangements, each with optical components, arranged coaxially with one another along a common first optical axis of the optical components of a respective optical arrangement and in the interior of an endoscope shaft. The optical components transmit an optical image from a distal end of the respective optical arrangement to a proximal end of the respective optical arrangement. The camera head contains at least one image sensor comprising a recording plane and at least two projection objectives, each having a second optical axis and arranged to project an image onto the image sensor. The optical arrangements comprise a collimating optical unit for generating an at least approximately parallel beam path at the outlet of the respective optical arrangement. The respective collimating optical unit has a third optical axis arranged coaxially with the optical components of the optical arrangements.

Abstract: A system for presentation of visual information to a user includes an image generator operatively coupled to an information source, a projector operatively coupled to the image generator and configured to project light indicative of the image within a defined region of space comprising a head box, a head worn viewing device comprising an optical element configured to receive the light indicative of the image when the optical element is positioned in the head box and to convert the light indicative of the image into a final image viewable by the user.

Abstract: Aspects described herein generally relate to a waveguide and/or an associated display apparatus. The waveguide includes a plurality of optical input ports configured to receive optical light, at least one optical output port configured to output at least a modified portion of the optical light, and a plurality of transmission channels, each coupled to one of the plurality of optical input ports and configured to transmit the optical light from a respective optical input port to the at least one optical output port. The plurality of transmission channels are arranged to cause the optical light diffracted from at least a first one of the plurality of transmission channels to partially overlap, at the at least one optical output port, with the optical light diffracted from at least a second one of the plurality of transmission channels.

Abstract: An embodiment of an image recording apparatus includes an eyeglass frame, at least one first optical unit disposed on the eyeglass frame for capturing a main scene image, and at least one second optical unit disposed on the eyeglass frame for capturing an auxiliary scene image. The first and the second field of view of the user at least partially overlap. The image resolution of the main scene image is lower than the image resolution of the main scene image and the field of view of the main scene image is larger than the field of view of the auxiliary scene image. The image recording apparatus further includes at least one processor for receiving the main and the auxiliary scene images, and generating a modified resolution copy of the main scene image based on the auxiliary scene image.

Abstract: A display device and a display method thereof are provided. The display device includes a display panel and at least one optical device arranged at a light-exiting side of the display panel. A light beam emitted from the display panel is a linearly-polarized, collimated light beam. The optical device includes a plurality of optical units independent of each other and corresponding to pixel units of the display panel in a one-to-one correspondence manner. Each optical unit is capable of refracting the light beam emitted from the display panel at an adjustable angle. Collimated light beams from the adjacent optical units have different emergent angles so that the light beams emitted from the display panel are converged at two viewing points, so as to display a virtual image with a spatial depth.

Abstract: A system including: a light source, a switchable diffuser, a structured light detector, and a ToF detector. The light source and switchable diffuser are controlled to operate in concert (together, and/or with other optical and electrical elements of the system) to project pulses of collimated beams of light (interleaved between pulses of flood light) during a single image capture period, the pulses of collimated beams of light being resolvable by the structured light detector and the ToF detector within the same image capture period.

Abstract: A display device according to the invention includes an image generating unit and a projection optical system. The projection optical system includes an optical element provided with a plurality of curved mirrors. The plurality of curved mirrors are arranged in a first direction so that the curved mirror positioned on a far side from the image generating unit has a greater inclination than that of the curved mirror positioned on a near side to the image generating unit. The plurality of curved mirrors include a curved mirror disposed in a position in a second direction equivalent to a thickness direction of the optical element that varies in the first direction.

Abstract: A display apparatus for motor vehicle capable of enhancing stereoscopic image effect utilizing a simple configuration. Since the front part includes a tilt approaching to an upward side as the front part proceeding to the front side of the motor vehicle, and a stereoscopic image is displayed on a display surface, the image is made visible in combination with the front part when the ring member is positioned at the tilt position. The image is expressed as having a visual depth by not only a mere image but also by the tilted front part so that the stereoscopic image effect is enhanced due to the combination of the front part and the stereoscopic image having a visual depth. Further, the configuration is simplified since the stereoscopic image effect can be enhanced without a need of altering the direction of the display surface.

Abstract: A camera rig including one or more stereoscopic camera pairs and/or one or more light field cameras are described. Images are captured by the light field cameras and stereoscopic camera pairs are captured at the same time. The light field images are used to generate an environmental depth map which accurately reflects the environment in which the stereoscopic images are captured at the time of image capture. In addition to providing depth information, images captured by the light field camera or cameras is combined with or used in place of stereoscopic image data to allow viewing and/or display of portions of a scene not captured by a stereoscopic camera pair.

Abstract: A naked-eye stereoscopic display grating, manufacturing method and display device are disclosed. The method includes: preparing a transparent substrate; depositing a metal oxide layer on the transparent substrate; depositing a metal grating layer on the metal oxide layer, wherein, a reflectivity of the metal oxide layer is less than a reflectivity of the metal grating layer; and adopting a photolithography method to etch the metal oxide layer and the metal grating layer in order to expose a portion of the transparent substrate to form a transparent region and a reflective region arranged periodically. Accordingly, the present invention can increase the usage efficiency of the light, decrease a color crosstalk problem and low contrast ratio problem caused by an environment light reflected by the metal grating layer and the light in the panel.

Abstract: An image processing apparatus including an acquiring unit configured to acquire an image signal of a plurality of images obtained by picking up an object image that is formed by a photographing optical system; a determining unit configured to determine a defocus amount of the object image by using the image signal of the plurality of images; and a conversion unit configured to perform, on the defocus amount, gradation conversion that has at least one conversion characteristic out of a plurality of different conversion characteristics, and to output information that is based on the defocus amount converted by the gradation conversion.

Abstract: A beam steering backlight unit provides a hologram image to multiple viewing positions and a holographic display apparatus includes the beam steering backlight unit. The backlight unit includes a light source array comprising a plurality of two-dimensionally arranged light sources and a micro lens array arranged to face the light source array and comprising a plurality of two-dimensionally arranged micro lenses. The light source array includes a plurality of light source blocks each corresponding to a respective one of the plurality of micro lenses, wherein a plurality of the light sources are arranged in each of the plurality of light source blocks. The light source array is configured to select and turn on only those light sources of the plurality of light sources respectively disposed in a same position in each of the plurality of light source blocks and turn off the other light sources.

Abstract: A parallax barrier, a display device and a display state control method belong to the field of display technology. The parallax barrier includes: a sealed cavity and a first polarizer disposed on a light exiting side of the sealed cavity, wherein the sealed cavity includes: a first substrate and a second substrate and a liquid crystal layer provided between the two substrates, a first transparent electrode layer is provided on a surface of the first substrate, and the first transparent electrode layer is a plurality of transparent electrode blocks arranged in an array, and a second transparent electrode layer is provided on a surface of the second substrate, and a voltage difference to deflect liquid crystal is capable of forming between the second transparent electrode layer and the transparent electrode block. By controlling different transparent electrode blocks, the parallax barrier can protect privacy in two directions.

Abstract: The disclosure provides for a display system for a vehicle comprising at least one image sensor, an image processor, and a display apparatus. The image sensor is configured to capture image data. The image processor is in communication with the image sensor and configured to generate augmented image data from the image data. The augmented image data is configured counteract a farsightedness of an occupant of the vehicle. The display apparatus is in communication with the image processor and configured to communicate the augmented image data independently to each of a right eye and a left eye of the occupant.

Abstract: In first and second display devices that are provided in a pair on the left and right sides, image light and external light are superimposed on each other and viewed. In this case, a parallax of an angle (the value of angle) is set by a frame unit functioning as a parallax setting unit tilting principal rays of left and right image light inwardly, and the angle of convergence of an observer is in an appropriate state in the case of viewing the image light.

Abstract: A display device comprises a display panel and a grating layer. From a center of a left-eye field-of-view central area of a left display area to a non left-eye field-of-view central area of the left display area, a grating period of a left-eye grating region of a first color, a grating period of a left-eye grating region of a second color, and a grating period of a left-eye grating region of a third color all decrease gradually. From a center of a right-eye field-of-view central area of a right display area to a non right-eye field-of-view central area of the right display area, a grating period of a right-eye grating region of the first color, a grating period of a right-eye grating region of the second color, and a grating period of a right-eye grating region of the third color all decrease gradually.

Abstract: A marker detection block 20 scans a taken image of a plurality of markers of a fixture worn on the head of a user so as to detect a two-dimensional coordinate on the taken image of the plurality of markers. A viewpoint position correction block 30 corrects a viewpoint position of the user without use of a coordinate in a Z direction of the markers but by use of the detected two-dimensional coordinate of the plurality of markers. A stereoscopic image generation block 40 generates a parallax image obtained when a three-dimensional object is viewed from the corrected viewpoint position.

Abstract: The present disclosure provides a display device. The display device comprises a display panel and a grating layer, wherein along a direction pointing from a center of a left-eye field-of-view central area to a non left-eye field-of-view central area, a grating period of a left-eye grating region of a first color, a grating period of a left-eye grating region of a second color, and a grating period of a left-eye grating region of a third color all decrease gradually; along a direction pointing from a center of a right-eye field-of-view central area to a non right-eye field-of-view central area, a grating period of a right-eye grating region of the first color, a grating period of a right-eye grating region of the second color, and a grating period of a right-eye grating region of the third color all decrease gradually.

Abstract: A stereoscopic optical system that includes an image member that is located at a position along a center optical axis and that has a first stereoscopic image area on a first side of the optical axis for receipt of a first stereoscopic image thereon and a second, separate stereoscopic image area on a second, separate side of the optical axis for receipt of a second, separate stereoscopic image thereon. The system includes an optical arrangement extending along the center optical axis and includes a roof prism with first and second roof segments. The arrangement is configured to transmit image-forming rays passing through the first roof segment to the first stereoscopic image area along a first optical path through the arrangement and is configured to transmit image-forming rays passing through the second roof segment to the second stereoscopic image area along a second, different optical path through the arrangement.

Abstract: An image sensor may include an array of imaging pixels. Each imaging pixel may have a photosensitive area that is covered by a respective diffractive lens to focus light onto the photosensitive area. The diffractive lenses may have a higher index of refraction than the surrounding materials. The diffractive lenses may be formed on an upper or lower surface of a planarization layer or may be embedded within the planarization layer. In some cases, multiple diffractive lenses may be formed over the imaging pixels. Some of the multiple diffractive lenses may have refractive indexes lower than the planarization layer such that the diffractive lenses defocus light. Focusing and defocusing diffractive lenses may be used to tune the response of the imaging pixels to incident light.

Abstract: A display system includes one or more multi-view (MV) pixels, each configured to emit beamlets in different directions in a beamlet coordinate system. The display system includes an input node which receives a specification of multiple viewing zones located relative to the MV pixels in a viewing zone coordinate system, and a processor coupled to the input node. The processor associates multiple contents with the multiple viewing zones, respectively, and determines a mapping that translates between the viewing zone coordinate system and the beamlet coordinate system. For each of multiple images generated from the multiple contents, the processor, using the mapping, identifies a bundle of beamlets from each of the MV pixels directed to one viewing zone to form the image. The processor outputs control signaling that defines color and brightness of each of the beamlets in each bundle to project the corresponding image to the corresponding viewing zone.

Abstract: A system (10) and method (52, 60, 72) for combining and/or displaying text with three-dimensional (3D) content. The system (10) and method (52, 60, 72) inserts text at the same level as the highest depth value in the 3D content. As a result, the system (10) and method (52, 60, 72) of the present disclosure produces text combined with 3D content wherein the text does not obstruct the 3D effects in the 3D content and does not create visual fatigue when viewed by a viewer.

Abstract: The present disclosure provides a virtual image display apparatus, head-up display system, and vehicle that distribute a spatially divided parallax image between a left eye and right eye of a user appropriately. The virtual image display apparatus according to the present disclosure includes a display device configured to spatially divide with a first pitch and to output right-eye images and left-eye images, first optical members periodically disposed with a second pitch, distributing light based on the output from the display device between a right-eye direction and a left-eye direction, and a second optical member configured to reflect or refract, by positive power, the light distributed between the right-eye direction and the left-eye direction by the first optical members. The first pitch is narrower than the second pitch.

Abstract: An apparatus and a method for displaying holographic 3D image are provided. The method includes generating, by a controller, a hologram signal to generate multiple identical hologram images which are shifted with respect to one another by a predetermined distance and overlapped on one another, and modulating, by a spatially light modulator (SLM), light incident on the SLM based on the hologram signal.

Abstract: A display control apparatus controls display of a transparent display which includes a screen configured to transmit light arriving from an object located on a side of a second surface so that the object is viewable from a viewpoint located on a side of a first surface which is an opposite surface to the second surface. The display control apparatus includes: an acquisition unit that acquires position information indicating relative positional relations between the transparent display and the viewpoint and between the transparent display and the object; and a display control unit that controls the display of the transparent display based on the position information.

Abstract: A display device includes a display unit including a display plane that displays an image and a parallax adjusting unit that is arranged to face the display unit and be able to switch a plurality of transmissive regions transmitting light and a plurality of non-transmissive regions restricting light, in which the transmissive regions and the non-transmissive regions are alternately in a first direction, and width of at least one transmissive region in the first direction among the plurality of transmissive regions or width of at least one non-transmissive region in the first direction among the plurality of non-transmissive regions is changed based on input information.

Abstract: Provided are an I/O device, an I/O program, and an I/O method that enable visual recognition with such a sense of distance as if a target object that is a real image were in contact with a stereoscopic image that is a virtual image. The I/O device according to the present invention includes: a display device that can generate a stereoscopic image; and a depth level sensor that measures a distance to a target object. A stereoscopic region of the stereoscopic image generated by the display device and a depth level detection region of the depth level sensor overlap with each other to thereby have a common region therebetween. As a result, the visual recognition with such a sense of distance as if the target object that is a real image were in contact with the stereoscopic image that is a virtual image is possible.

Abstract: An image generating apparatus and a display device for a layered display scheme based on a location of an eye of a user are provided, wherein the image generating apparatus may generate layer images for a three-dimensional (3D) image based on information related to pixels matched based on the location of the eye of the user.

Abstract: An image processing apparatus includes: a subject detector that detects a predetermined subject in at least one of a first input image and a second input image between which parallax is present; and a combiner that combines a subject frame corresponding to the detected subject with each of the first and second input images stereoscopically displayed on a display section in such away that the subject frames combined with the first and second input images also provide a depth sensation.

Abstract: In an exhibition device and a video picture exhibition method according to the present invention, at least one exhibition object for reinforcing the three-dimensional effect of a spatial image is disposed in a region other than an upper surface of an image-forming optical element (micromirror array) in an upper surface of an enclosure (case) of the device and at a position where a distance from the center of a virtual display area of the spatial image projected from a display to over the enclosure thereto is not greater than a diagonal length of the virtual display area or at a position where the distance is not greater than a maximum diameter of the virtual display area. This achieves the effective display of an impressive two-dimensional video picture appearing three-dimensional in association with the exhibition object disposed on the upper surface.

Abstract: A calibration device, a calibration program, and a calibration method that can adjust the relation between a distance to an object that is a real image and a view of a stereoscopic image that is a virtual image and create an association therebetween are provided. The calibration device of the present invention includes a display device that can generate a stereoscopic image, a depth level sensor that measures a distance to an object, and an adjusting unit that adjusts the stereoscopic image generated by the display device and a depth level of the object detected by the depth level sensor.

Abstract: The present disclosure provides a display panel and a display device. The display panel includes a first substrate and a second substrate opposite to each other. A sealant is arranged on one of inner surfaces of the first substrate and the second substrate, and a first spacer is arranged between the sealant and the other one of the inner surfaces of the first substrate and the second substrate.

Abstract: A display system comprises a projector combined with a retro reflective screen and a viewer distance from the projector such that the observation angle is less than approximately 2-3 degrees. The brightness of the image on the screen for the proposed display system is increased by a factor of ˜100-500× as compared to traditional display systems with for an equivalent power/intensity light source.

Abstract: A projection apparatus has an optical device configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate the coherent light beams to the optical device so that the coherent light beams scan the optical device, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the optical device from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an intermediate optical system provided between the optical device and the light modulator, configured to restrict an diffusion angle of coherent light beams diffused by the optical device.

Abstract: A display system comprises a projector combined with a retro reflective screen and a viewer distance from the projector such that the observation angle is less than approximately 2-3 degrees. The brightness of the image on the screen for the proposed display system is increased by a factor of ˜100-500× as compared to traditional display systems with for an equivalent power/intensity light source.

Abstract: Embodiments of the present disclosure provide a display driving method, an apparatus and a display system, and are used for displaying different video signals to different users simultaneously through one display device. The method comprises: receiving a first image signal and a second image signal which correspond to different users respectively; performing a signal process on the first image signal to acquire a processed first image signal, and performing a signal process on the second image signal to acquire a processed second image signal; driving pixels of odd-numbered columns in the pixel array to display the processed first image signal and driving pixels of even-numbered columns in the pixel array to display the processed second image signal, wherein a polarization direction of the emergent light of the pixels of odd-numbered columns is different from that of the emergent light of the pixels of even-numbered columns.

Abstract: A display system comprises a projector combined with a retro reflective screen and a viewer distance from the projector such that the observation angle is less than approximately 2-3 degrees. The brightness of the image on the screen for the proposed display system is increased by a factor of ˜100-500× as compared to traditional display systems with for an equivalent power/intensity light source.

Abstract: The present invention relates to a method for controlling an image display device including a flexible display unit, comprising the steps of: obtaining a multi-view image signal including camera position information; obtaining information on the shape of the flexible display unit on the basis of the obtained multi-view image signal; and modifying the shape of the flexible display unit on the basis of the obtained shape information.

Abstract: The present invention provides a 3D display method, including: when display is driven, setting two adjacent sub-pixels in one row of sub-pixels as one group of sub-pixels so that every two adjacent groups of sub-pixels display different types of single-eye images, two sub-pixels in each group of sub-pixels display the same type of single-eye images and each sub-pixel belongs to only one group of sub-pixels; or, setting two adjacent sub-pixels other than the first and the last sub-pixels in one row of sub-pixels as one group of sub-pixels so that every two adjacent groups of sub-pixels display different types of single-eye images, two sub-pixels in each group of sub-pixels display the same type of single-eye images, each sub-pixel belongs to only one group of sub-pixels and the first and the last sub-pixels display single-eye images, types of which are different from those displayed by their adjacent sub-pixels, respectively.

Abstract: An exit surface of a light guide plate includes a first position from which first emitted light is emitted within an angular range that causes the first emitted light to be applied to one eye and the vicinity thereof and a second position from which second emitted light is emitted within an angular range that causes the second emitted light to be applied to the other eye and the vicinity thereof. A straight line that passes through the first position and the center of the one eye and a straight line that passes through the second position and the center of the other eye intersect with each other.