摘要:
Disclosed is a light guiding valve apparatus comprising an optical valve, a two dimensional light source array and a focusing optic for providing large area collimated illumination from localized light sources. A stepped waveguide may be a stepped structure, in which the steps may be extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. A two dimensional array of viewing windows may be produced. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays with wide viewing freedom and low cross talk and near-eye displays that are substantially transparent.
摘要:
Disclosed is an autostereoscopic display apparatus comprising a light guiding valve apparatus including an imaging directional backlight, an illuminator array and an observer tracking system arranged to achieve control of an array of illuminators which may provide a directional display to an observer over a wide lateral and longitudinal viewing range with low flicker.
摘要:
A method of encoding a 2D video signal with conversion data to assist in the conversion of said 2D video signal to left and right eye images for a stereoscopic display, characterised in that said method includes: adding conversion data to said video signal to provide the encoded signal, the data defining the displacement of respective selected points of said video image for converting the video image to a stretched image for a stereoscopic display.
摘要:
The present invention relates to a device for displaying a multi-view 3D image by using viewing zone expansion that is applicable to multiple observers, and to a method for same, comprising: an image display panel for displaying a 3D image; a control portion for controlling an image view of each 3D pixel line; and a system for tracking the position of the pupils of both eyes of the observer, wherein each of the 3D pixel lines provide at a multi-view of at least four views, and the control portion selects first and second views that are close to the center of each of the pupils of both eyes of the observer for each viewing zone of the view formed by each of the 3D pixel lines and provides one image view from both eyes of the observer to the first view, by using three dimensional coordinates of the position of the pupils of both eyes of the observer that are determined by the system for tracking the position of the pupils of both eyes of the observer.
摘要:
An autostereoscopic display (1) comprises a display device (9) and an optical system (8) which provide laterally overlapping viewing windows. Such a display may be used to perform observer tracking.
摘要:
A thin stereoscopic display which enables plural persons to simultaneously observe stereoscopic images includes a color liquid crystal plate for displaying stereo-pairs composed of left and right eye perspectives in time-interlaced manner, a monochrome liquid crystal TV display disposed behind the color liquid crystal plate for displaying binary and inverted binary images of half face of each observer so as to be synchronized with the time-interlaced display of the color liquid crystal plate, and an arrayed convex lens disposed between the color liquid crystal plate and the monochrome liquid crystal TV display so as to focus the observers' optical images on the screen of the monochrome liquid crystal TV display in geometrical agreement with the observers' face images displayed thereby. The arrayed convex lens distributes light emitted from the binary and inverted binary images of half face of each observer to the left and right eyes of each observer through the color liquid crystal plate, respectively, whereby the left and right eye perspectives of the stereo-pairs displayed by the liquid crystal plate reach the left and right eyes of each observer, respectively.
摘要:
An imaging directional backlight apparatus including a waveguide, a light source array, for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure, in which the steps may further include extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. The uncorrected system creates non-illuminated void portions when viewed off-axis preventing uniform wide angle 2D illumination modes. The system may be corrected to remove this non uniformity at wide angles through the introduction of additional sources away from the system's object plane, additional imaging surfaces, and/or by altering ray paths.
摘要:
The present invention provides a first driving mode control unit (347), a second driving mode control unit (346, 349), and a mode switching unit (348), as elements to be used with a multi-view display apparatus (325) in which pixels that constitute a screen are disposed so that a first pixel group and a second pixel group are arranged in a distributed manner and that is operable to display, at the same time, mutually different pictures respectively for two directions, by driving the first pixel group and the second pixel group independently of each other, based on picture signals having mutually different sources. The first driving mode control unit (347) drives the first pixel group and the second pixel group independently of each other, based on the picture signals having the mutually different sources. The second driving mode control unit (346, 349) drives one of the pixel groups to improve the picture quality level of one of the pictures displayed by one of the pixel groups. The mode switching unit (348) exercises control to switch between the first driving mode control unit and the second driving mode control unit.
摘要:
The invention relates to stereo projection systems for displaying stereopaired images on mirror-spherical or parabolic screens and for collectively watching a stereo effect without using stereo spectacles. Said invention makes it possible to continuously dynamically superimpose the projections of the left and right picture frames of a stereopair with the user's left and right eyes, respectively. Such impositions are carried out simultaneously and independently for each viewer. The technical result is attainable by that the inventive stereo projection system comprises stereo projectors which are individually allocated to each viewer and in-series connected, a monitoring system for continuously and accurately determining the viewers' eye positions, a self correcting device, video-correcting devices, automatic drives for the mechanical self-correction of the stereo projectors and the system optical elements, units which are used for forming stereopair projected images in the stereo projector and which are coupled with the video-correcting device for the video-correction of the optimal parameters of the screen images. The inventive system makes it possible to carry out the self- and video-correction in an integral manner in such a way that the comfort of the stereo effect viewing is maximally satisfied.
摘要:
The method and system of the present invention displays autostereographic images without parallax barriers or loss of resolution. A stereopair is processed and sent to a distant display and one or more transmissive displays placed in front of it. Each display has a calculated images containing at least some of the image information destined for both eyes of a viewer. Each display acts as a mask for the other displays. The processing of the stereopairs to produce calculated images comprises summing the predicted image data, comparing the predicted image data to the desired stereopair, and minimizing the error. In a preferred embodiment, this processing is performed by an artificial neural network. A spatial mask, such as a diffuser, can be placed between displays to suppress Moir{acute over (e )} patterns.