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公开(公告)号：US20200045302A1
公开(公告)日：2020-02-06
申请号：US16050359
申请日：2018-07-31
发明人： Ilmars Osmanis , Kriss Osmanis , Martins Narels , Ugis Gertners , Roberts Zabels , Armands Smaukstelis
IPC分类号： H04N13/388 , G09G3/00 , G03B21/00 , G02B27/30 , G02B27/09
摘要： A volumetric display system for displaying a three-dimensional image. The volumetric display system includes a multi-plane volumetric display with display elements; a graphics processing unit to process the aforesaid image to generate image planes corresponding thereto; and a projector communicably coupled to the aforesaid elements. The projector includes a light source for emitting a light beam; a spatial light modulator to modulate the emitted light beam; a telecentric projection arrangement to direct the modulated light beam towards the display elements, whilst providing a substantially-constant magnification of the modulated light beam; and a driver module coupled to the light source, the spatial light modulator. The driver module receives the image planes from the graphics processing unit, and projects the image planes upon the display elements, by way of the modulated light beam.
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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：US20190293950A1
公开(公告)日：2019-09-26
申请号：US15928643
申请日：2018-03-22
发明人： Ilmars Osmanis , Kri{hacek over (s)} Osmanis , Roberts Zabels , Martin{hacek over (s)} Narels , Ugis Gertners , Gatis Valters , Ainars Ozols
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：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：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：US20200209669A1
公开(公告)日：2020-07-02
申请号：US16235345
申请日：2018-12-28
发明人： Ilmars Osmanis , Robers Zabels , Ugis Gertners , Martins Narels , Kriss Osmanis , Ainars Ozols
IPC分类号： G02F1/1347 , G02F1/137 , G02F1/1333 , G02B27/22 , G02F1/1339
摘要： An electro-optical unit for a volumetric display device is disclosed. The electro-optical unit includes first optical diffuser element including first substrate and second substrate, first electrode arranged on inner side of the first substrate and second electrode arranged on inner side of the second substrate, and first liquid crystal layer arranged between the first electrode and the second electrode; and a second optical diffuser element including third substrate and fourth substrate, third electrode arranged on inner side of third substrate and fourth electrode arranged on inner side of the fourth substrate, and second liquid crystal layer arranged between third electrode and fourth electrode. Further, the electro-optical unit includes a first transitional medium layer arranged between the first optical diffuser element and the second optical diffuser element, with a refractive index equivalent to a refractive index of one or more of the fourth substrate and the fifth substrate.
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7.发明申请公开(公告)号：US20200066194A1
公开(公告)日：2020-02-27
申请号：US16108372
申请日：2018-08-22
发明人： Ilmärs Osmanis , Kriss Osmanis , Martiss Narels , Ugis Gertners , Roberts Zabels , Armands Smaukstelis , Ainärs Ozols
IPC分类号： G09G3/00 , G06F3/041 , H04N13/393
摘要： A table-top volumetric display apparatus for presenting three-dimensional imagery. The volumetric display apparatus includes multi-layer volumetric display including plurality of display elements being arranged substantially parallelly to form projection volume, each of the plurality of display elements being implemented by way of at least one optical diffuser; volumetric display driver coupled to the aforesaid display, volumetric display driver being configured to control operational states of the plurality of display elements; processing unit configured to process three-dimensional image to generate plurality of image slices, wherein given image slice is to be projected onto corresponding display element; projector configured to project the plurality of image slices onto the plurality of display elements; and control unit coupled to the volumetric display driver, processing unit and the projector, wherein the control unit is configured to control the volumetric display driver and the projector to present the three-dimensional image within the projection volume.
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公开(公告)号：US20230133231A1
公开(公告)日：2023-05-04
申请号：US17514679
申请日：2021-10-29
发明人： Ugis Gertners , Ilmars Osmanis , Martins Narels , Ainars Ozols , Sandra Balode , Roberts Zabels
摘要： An optical element for expanding and uniforming a beam of light. The optical element includes a plurality of layers of a first type and plurality of layers of a second type arranged as a stack of layers. The stack of layers includes an input facet for receiving a beam of light and an output facet to output expanded and uniformed beam of light. The stack of layers forms a right triangular prism having a first side and a second side of a same width.
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公开(公告)号：US11323691B1
公开(公告)日：2022-05-03
申请号：US17148920
申请日：2021-01-14
发明人： Ilmars Osmanis , Ugis Gertners , Kriss Osmanis , Martins Narels , Roberts Zabels , Sandra Balode
IPC分类号： H04N13/339 , H04N9/31 , G02B27/01 , G02B27/30
摘要： A display system and a method for displaying a three-dimensional image. A light source is employed to emit a light beam towards a first optics. The first optics is employed to collimate and form the light beam and provide the collimated light beam towards a spatial light modulator. The spatial light modulator is employed to modulate the collimated light beam and the modulated light beam is provided to a first direction. A first optical image expander is inclined at a first angle ‘α’ in respect to the first direction and is employed to reflect the modulated light beam to a second direction. A second optical image expander is inclined at a second angle ‘β’ in respect to the second direction and is employed to reflect the reflected light beam to a third direction. A screen element is arranged on the optical path for displaying a three-dimensional image.
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公开(公告)号：US20210392305A1
公开(公告)日：2021-12-16
申请号：US16903038
申请日：2020-06-16
发明人： Ilmars Osmanis , Roberts Zabels , Kriss Osmanis , Martins Narels , Ugis Gertners , Rendijs Smukulis , MArcis Greitans
IPC分类号： H04N9/31 , H04N13/161 , 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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