Abstract: There is provided a parallax barrier filter realizing far higher brightness than a conventional barrier filter. A large number of apertures 12 are arranged obliquely and at equal intervals in a parallax barrier filter 10 of a five-parallax type. For a five-parallax type, the apertures 12 are rectangles with the same shape and the same area, and under the condition that an opening height is 8/7 times as large as a sub-pixel height, that is, the opening height Ht=8/7Hsp, an opening width is set to 2-2.5 times as large as a sub-pixel width. A positional relation between the adjacent apertures 12 is that based on expressions Pt=5·Wsp and Dtr=(5/7)·Wsp, where Pt is a pitch of the plural apertures 12 along a lateral direction X and Dtr is a deviation amount between the apertures 12 adjacent in a vertical direction Y.

Abstract: An arrangement for the display of images with selectable three-dimensionally visible or two-dimensional modes, including an illuminating device a filter array to impart a structure to the light a diffusing layer, and a transmissive image display device, with a variable distance a between the filter array and the diffusing layer, so that in a first position, the structure imparted by the filter array is essentially cancelled due to the light diffusion effect of the diffusing layer, and a two-dimensional image is shown, and the structure imparted by the filter array is essentially not cancelled, so that the image display device shows a three-dimensional image.

Abstract: An autostereoscopic projection arrangement, comprising at least one projector and at least one filter array, in which arrangement bits of partial information from views of a scene or object are projected by the projector/projectors onto a projection screen, where these bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays are made visible to at least one observer, and in which, as regards the propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: The invention relates to arrangements for spatial display, and in particular to such arrangements that, by means of wavelength or gray level filter arrays, present an image visible in three dimensions to one or several observers without the use of auxiliary aids such as glasses. In such arrangements, an increased brightness of the 3D display is achieved by means of the arrangement of transparent filters on the filter array according to the invention.

Abstract: The invention relates to an autostereoscopic projection arrangement, comprising at least one projector (4) and at least one filter array (F1, F2), which has a multitude of filter elements arranged in columns and rows, in which arrangement bits of partial information from views of a scene or object are projected by the projector/the projectors (4) onto a projection screen (3), where these bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays (F1, F2), are made visible to at least one observer (5), and in which, as regards the propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer (5) will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: The invention relates to arrangements for spatially displaying a scene or object, in which a great number of individual pixels ?ij in a grid of rows (j) and columns (i) are made visible simultaneously, with the pixels (?ij) presenting bits of partial information from several views Ak (k=1 . . . n) of the scene or object, and in which propagation directions for the light radiated by the pixels (?ij) are established by means of a structured plate. The structured plate contains a great number of optical imaging elements (?pq) arranged in a grid of rows (q) and columns (p). According to the invention, at least two of the following kinds of optical imaging elements (?pq) are simultaneously provided on the structured plate, viz. wavelength or gray level filter, lens or cylinder lens, and/or prism.

Abstract: The invention relates to methods and arrangements for unaided three-dimensionally recognizable representation by a method for three-dimensionally recognizable representation, in which individual image elements (?ij) are simultaneously made visible, the image elements (?ij) reproducing partial information from several views (Ak (k=1 . . . n)) of the scene/object. Directions of propagation are predefined for the light emitted by the image elements (?ij) with the aid of a structural plate. For this purpose, the structural plate includes a plurality of optical elements that are arranged in sequences. According to the invention, the mean geometrical distance (p?) between two adjacent sequences of light-transmitting optical elements on the structural plate meets the condition p?=p, wherein p=G*sin (0.017 degrees), G representing four times the diagonal length of the image element (?ij) PO raster.

Abstract: There is provided a parallax barrier filter realizing far higher brightness than a conventional barrier filter. A large number of apertures 12 are arranged obliquely and at equal intervals in a parallax barrier filter 10 of a five-parallax type. For a five-parallax type, the apertures 12 are rectangles with the same shape and the same area, and under the condition that an opening height is 8/7 times as large as a sub-pixel height, that is, the opening height Ht=8/7Hsp, an opening width is set to 2-2.5 times as large as a sub-pixel width. A positional relation between the adjacent apertures 12 is that based on expressions Pt=5·Wsp and Dtr=(5/7)·Wsp, where Pt is a pitch of the plural apertures 12 along a lateral direction X and Dtr is a deviation amount between the apertures 12 adjacent in a vertical direction Y.

Abstract: The invention relates to an autostereoscopic projection arrangement, comprising at least one projector (4) and at least one filter array (F1, F2), which has a multitude of filter elements arranged in columns and rows, in which arrangement bits of partial information from views of a scene or object are projected by the projector/the projectors (4) onto a projection screen (3), where these bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays (F1, F2), are made visible to at least one observer (5), and in which, as regards the propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer (5) will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: The invention relates to an autostereoscopic projection arrangement, comprising at least one projector (4) and at least one filter array (F1, F2), which has a multitude of filter elements arranged in columns and rows, in which arrangement bits of partial information from views of a scene or object are projected by the projector/the projectors (4) onto a projection screen (3), where these bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays (F1, F2), are made visible to at least one observer (5), and in which, as regards the propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer (5) will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: An autostereoscopic projection arrangement, comprising at least one projector and at least one filter array which has a multitude of filter elements arranged in columns and rows, in which arrangement bits of partial information from views of a scene or object are projected by the projector(s) onto a projection screen, where there bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays, are made visible to at least one observer, and in which, as regards to propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: A method of spatial visualization in which several views are decomposed into bits of partial information, which are made optically visible by image rendering elements. Neighboring image rendering elements emit light of different wavelengths or wavelength ranges. Propagation directions for the light are given by wavelength filters such that an observer will see predominantly bits of partial information of a first selection of views with one eye and predominantly bits of partial information of a second selection with the other eye. At least one image rendering element is simultaneously allocated bits of partial information from at least two different views. The allocation is made in such a way that the wavelength of the partial information is always equal to the wavelength, or lies in the wavelength range, of the light emitted by the allocated image rendering element.

Abstract: The invention relates to methods and arrangements for unaided three-dimensionally recognizable representation by a method for three-dimensionally recognizable representation, in which individual image elements (?ij) are simultaneously made visible, the image elements (?ij) reproducing partial information from several views (Ak (k=1 . . . n)) of the scene/object. Directions of propagation are predefined for the light emitted by the image elements (?ij) with the aid of a structural plate. For this purpose, the structural includes a plurality of optical elements that are arranged in sequences. According to the invention, the mean geometrical distance (p?) between two adjacent sequences of light-transmitting optical elements on the structural plate meets the condition p?=p, wherein p=G*sin(0.017°), G representing four times the diagonal length of the image element (?ij) raster.

Abstract: The invention relates to arrangements for spatially displaying a scene or object, in which a great number of individual pixels ?ij in a grid of rows (j) and columns (i) are made visible simultaneously, with the pixels (?ij) presenting bits of partial information from several views Ak (k=1 . . . n) of the scene or object, and in which propagation directions for the light radiated by the pixels (?ij) are established by means of a structured plate. The structured plate contains a great number of optical imaging elements (?pq) arranged in a grid of rows (q) and columns (p). According to the invention, at least two of the following kinds of optical imaging elements (?pq) are simultaneously provided on the structured plate, viz. wavelength or gray level filter, lens or cylinder lens, and/or prism.

Abstract: The invention relates to arrangements for the display of images of a scene or object, that alternatively provides either a three-dimensional or plain two-dimensional visual appearance to several viewers without any aids.

Abstract: An arrangement for the display of images with selectable three-dimensionally visible or two-dimensional modes, including an illuminating device a filter array to impart a structure to the light a diffusing layer, and a transmissive image display device, with a variable distance a between the filter array and the diffusing layer, so that in a first position, the structure imparted by the filter array is essentially cancelled due to the light diffusion effect of the diffusing layer, and a two-dimensional image is shown, and the structure imparted by the filter array is essentially not cancelled, so that the image display device shows a three-dimensional image.

Abstract: The invention relates to an autostereoscopic projection arrangement, comprising at least one projector (4) and at least one filter array (F1, F2), which has a multitude of filter elements arranged in columns and rows, in which arrangement bits of partial information from views of a scene or object are projected by the projector/the projectors (4) onto a projection screen (3), where these bits of partial information are rendered on image rendering elements and, having passed one or several of the filter arrays (F1, F2), are made visible to at least one observer (5), and in which, as regards the propagation direction of the bits of partial information, the image rendering elements correspond with correlated filter elements in such a way that an observer (5) will see predominantly bits of partial information from a first selection of views with one eye and predominantly bits of partial information from a second selection of views with the other eye, and thus will have a spatial impression.

Abstract: A method for three-dimensional display in which a plurality of individual image elements ?ij are made visible simultaneously in a raster of columns i and lines j, wherein the image elements ?ij reproduce partial information from a plurality of views Ak (k1 . . . n) of a scene/object, and adjacent image elements ?ij radiate light of different wavelengths or wavelength regions is provided. In a method of the type described above, wavelength-dependent propagation directions are predetermined for the light radiated from the image elements ?ij. The propagation directions within an observation space in which an observer is situated intersect in a plurality of intersection points which correspond to observation positions. From each observation position, one eye of an observer perceives predominantly partial information of a first selection and the other eye perceives predominantly partial information of a second selection from views Ak (k=1 . . . n).

Abstract: The invention relates to arrangements for spatial display, and in particular to such arrangements that, by means of wavelength or gray level filter arrays, present an image visible in three dimensions to one or several observers without the use of auxiliary aids such as glasses. In such arrangements, an increased brightness of the 3D display is achieved by means of the arrangement of transparent filters on the filter array according to the invention.

Abstract: The invention relates to a method of spatial visualization of a scene or an object, in which several views of the scene or object are decomposed into bits of partial information, which are made optically visible by image rendering elements, and in which neighbored image rendering elements emit light of different wavelengths or wavelength ranges, and in which propagation directions for the light are given by means of wavelength filters in such a way that an observer will see predominantly bits of partial information of a first selection of views with one eye and predominantly bits of partial information of a second selection with the other eye. The invention is intended to improve the quality of spatial visualization.