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公开(公告)号：US12072493B2
公开(公告)日：2024-08-27
申请号：US17109441
申请日：2020-12-02
发明人： Ilmārs Osmanis , Kri{hacek over (s)}s Osmanis , Roberts Zabels , Mārtiņ{hacek over (s)} Narels , Uǵis Gertners , Gatis Valters , Ainārs Ozols
IPC分类号： G02B27/01 , H04N13/341 , H04N13/363
CPC分类号： G02B27/0172 , H04N13/341 , H04N13/363 , G02B2027/0174 , H04N2213/005 , H04N2213/008
摘要： A near-eye display apparatus for displaying a three-dimensional image to a user. The apparatus includes an image projecting means to project pairs of images associated with different cross-sectional planes of the three-dimensional image; at least one optical display arrangement including a plurality of optical elements, wherein each of the plurality of optical elements is operable to be switched between a first optical state and a second optical state; a control arrangement that is operable to control the at least one optical display arrangement to separately switch each optical element from the first optical state to the second optical state, and the image projecting means to project a separate pair of images on each optical element in the second optical state; and at least one optical device that allows display of the three-dimensional image to each eye of the user.
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公开(公告)号：US11425343B2
公开(公告)日：2022-08-23
申请号：US16903038
申请日：2020-06-16
发明人： Ilmärs Osmanis , Roberts Zabels , Kri{hacek over (s)}s Osmanis , Märtiņ{hacek over (s)} Narels , Uǵis Gertners , Rendijs Smukulis , Märcis Greitäns
IPC分类号： H04N9/31 , H04N13/161 , G02B30/33 , H04N13/178
摘要： A display system for presenting three-dimensional images. The display system includes projection unit including projection subassemblies, wherein each projection subassembly includes array of point-like light sources, spatial light modulator and controller; projection screen; and processor. The processor is configured to: process three-dimensional data pertaining to a scene to generate image data of three-dimensional image; and display three-dimensional image, via projection subassemblies of the projection unit, wherein, in each of projection subassemblies, the controller is configured to multiplex operations of individual point-like light sources of the array and the spatial light modulator in a time-sequential manner, based on the image data of three-dimensional image, to display a plurality of segments of three-dimensional image sequentially.
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公开(公告)号：US20220373819A1
公开(公告)日：2022-11-24
申请号：US17326405
申请日：2021-05-21
发明人： Ilmars Osmanis , Kriss Osmanis , Roberts Zabels , Martins Narels , Ugis Gertners , Sandra Balode
摘要： An apparatus for displaying a three-dimensional image. The apparatus includes a light source, an intensity modulator to modulate an intensity of a given light beam, a mirror device to modulate spatially the intensity-modulated light beam at a given time instant, a first optics to collimate the spatially-modulated light beam and an image waveguide comprising an in-coupling structure to receive the collimated light beam and an out-coupling structure comprising out-coupling sites. The image waveguide directs the collimated light to the out-coupling structure which selectively redirects multiple reflections towards a segmented optical structure comprising at least two types of segments to redirect a first part of the multiple reflections to form a first type image point P1 at a first focal distance d1, d1′ and a second part of the multiple reflections to form a second type image point P2 at a second focal distance d2, d2′.
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公开(公告)号：US20220311984A1
公开(公告)日：2022-09-29
申请号：US17213374
申请日：2021-03-26
发明人： Ilmars Osmanis , Roberts Zabels , Kriss Osmanis , Roberts Gotlaufs , Marcis Greitans , Kristians Slics , Elza Lina Linina
IPC分类号： H04N13/122 , H04N13/332 , H04N13/194 , H04N13/15 , H04N13/366 , H04N13/161 , H04N13/172 , H04N13/128 , G02B30/34
摘要： A system for rendering three-dimensional image content for a multi-focal display device. The system includes a first processing sub-system configured to divide the three-dimensional image content into a plurality of virtual depth planes, associate each of the plurality of virtual depth planes with one of a first set of displays and a second set of displays of the multi-focal display device, and generate a first array including the plurality of virtual depth planes. The system also includes a transmission sub-system configured to provide a data channel for transmission of the generated first array. The system further includes a second processing sub-system configured to receive the generated first array and to render the three-dimensional image content in the multi-focal display device based thereon.
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公开(公告)号：US10595015B2
公开(公告)日：2020-03-17
申请号：US16009650
申请日：2018-06-15
发明人： Ilmars Osmanis , Kri{hacek over (s)}s Osmanis , Gatis Valters , Rendijs Smukulis , Una Kandere , Roberts Zabels
IPC分类号： H04N13/395 , H04N13/398 , H04N13/106 , G06T3/40 , H04N13/183 , H04N13/194 , H04N9/31 , H04N5/44 , H04N13/332 , G06T15/00 , G06T3/20 , G06T5/00 , G06T7/55
摘要： Displaying a sequence of three-dimensional images includes generating a data stream including a plurality of image planes associated with each image of the sequence of three-dimensional images, generating a bit-plane stream associated with the data stream, the bit-plane stream including a plurality of bit-planes associated with each image of the sequence of three-dimensional images, buffering the bit-plane stream asynchronously to provide a first plurality of bit-planes associated with a first three-dimensional image, and projecting a first plurality of image planes associated with the first three-dimensional image to display the first three-dimensional image, based upon the first plurality of bit-planes, the first plurality of image planes being projected until a second plurality of bit-planes associated with a second three-dimensional image is provided.
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公开(公告)号：US20230236421A1
公开(公告)日：2023-07-27
申请号：US17581169
申请日：2022-01-21
发明人： Ilmars Osmanis , Ugis Gertners , Kriss Osmanis , Martins Narels , Marcis Greitans , Ainars Ozols , Sandra Balode , Roberts Zabels
CPC分类号： G02B27/0172 , G02B27/30 , G02B27/286 , H04N9/3152 , H04N9/3167
摘要： An optical arrangement for expanding and uniformizing a beam of light, including a first optical member arranged to receive a collimated incoming light beam, from an incoming beam direction, with a first polarization, the first optical member configured to expand and uniformize the collimated incoming light beam along a first axis to form a first collimated light beam exiting therefrom in a first beam direction; a second optical member adapted to receive the first collimated light beam, from the first beam direction, with the first polarization in relation thereto, the second optical member configured to expand and uniformize the first collimated light beam along a second axis to form a second collimated light beam exiting therefrom in a second beam direction.
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公开(公告)号：US11668979B2
公开(公告)日：2023-06-06
申请号：US17404392
申请日：2021-08-17
发明人： Ainars Ozols , Ilmars Osmanis , Kriss Osmanis , Martins Narels , Gatis Mozolevskis , Roberts Zabels
IPC分类号： G02F1/1337 , G02F1/1343 , G02F1/1333 , G02F1/1347
CPC分类号： G02F1/133742 , G02F1/13439 , G02F1/13471 , G02F1/133305 , G02F2202/42
摘要： A liquid crystal cell including at least two substrates transparent to visible part of light spectrum, a liquid crystal layer encased between the substrates, and a stack of functional layers formed over the substrates and enclosed between a given substrate and the liquid crystal layer. In a direction from the given substrate towards the liquid crystal layer, said stack comprises a first dielectric layer, a transparent electrode layer, and a second dielectric layer. A refractive index of the first dielectric layer lies in a range between a refractive index of the given substrate and a refractive index of the transparent electrode layer. A refractive index of the second dielectric layer lies in a range between the refractive index of the transparent electrode layer and a refractive index of the liquid crystal layer corresponding to a homeotropic alignment of a liquid crystal material of the liquid crystal layer.
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公开(公告)号：US20220310037A1
公开(公告)日：2022-09-29
申请号：US17213724
申请日：2021-03-26
发明人： Ilmars Osmanis , Roberts Zabels , Kriss Osmanis , Roberts Gotlaufs , Marcis Greitans , Kristians Slics , Elza Lina Linina
摘要： A head-mounted display system for reducing motion-to-photon latency. The head-mounted display system includes a head-mounted display apparatus including a display driver to drive an image on a display, a tracking system to obtain a pose data, a communication interface to form communication between the head-mounted display apparatus and a remote rendering unit, and a display processor configured to collect a first pose data at a first moment of time and a second pose data at a second moment of time and provide the collected pose data to the remote rendering unit, collect a third pose data at a third moment of time, receive a second initial image from a remote rendering unit, use the third pose data to form a second first initial image from the second initial image and receive V-sync signal from the display driver and thereafter provide the second initial image to the display driver.
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公开(公告)号：US20220128756A1
公开(公告)日：2022-04-28
申请号：US17081183
申请日：2020-10-27
发明人： Ilmars Osmanis , Martins Narels , Kriss Osmanis , Ainars Ozols , Ugis Gertners , Roberts Zabels
摘要： A display system including an image source, an optical image deflector unit with an image entry surface, and a first optics arranged between the image entry surface and the image source. The image source generates image information for one or more focal distances which is directed towards the image entry surface by the first optics. The optical image deflector unit includes a first surface and a second surface. The first surface is arranged to reflect the directed image information towards a semi-reflective outcoupling surface, with an angle of incidence higher than a first angle. The semi-reflective outcoupling surface is arranged between the first and the second surface to reflect the reflected one or more image information towards the first surface, with an angle of incidence lower than the first angle. The image entry surface is arranged between the image source and a semi-reflective outcoupling surface.
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公开(公告)号：US10955685B2
公开(公告)日：2021-03-23
申请号：US16235491
申请日：2018-12-28
发明人： Ilmārs Osmanis , Robers Zabels , Uġis Gertners , Mārtiņ{hacek over (s)} Narels , Kri{hacek over (s)}s Osmanis , Rendijs Smukulis , Armands {hacek over (S)}maukstelis
摘要： Disclosed is volumetric display arrangement for representing content of an image at different focal distances in a view of real-world environment. The volumetric display arrangement includes at least one image projection unit operable to project multiple depth planes of the image, at least one electro-optical unit comprising two or more optical diffuser elements arranged parallel to each other, the at least one electro-optical unit being positioned to receive the projected multiple depth planes of the image thereon and configured to independently display one of the projected multiple depth planes of the image at one of the two or more optical diffuser elements at a given instant of time, and an optical combiner positioned with respect to the at least one electro-optical unit to combine the view of real-world environment with the independently displayed multiple depth planes of the image in the at least one electro-optical unit.
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