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公开(公告)号：US11709305B2
公开(公告)日：2023-07-25
申请号：US17580581
申请日：2022-01-20
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma
IPC: F21V8/00
CPC classification number: G02B6/003 , G02B6/005 , G02B6/0016 , G02B6/0036 , G02B6/0068
Abstract: A collimated backlight and an electronic display employ a light guide having angle-preserving scattering feature and an absorption collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The absorption collimator includes an absorption element and is configured to convert light provided by a light source into collimated light to be guided as the guided light. The electronic display includes an array of light valves and may be configured as a multiview display or a privacy display.
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12.发明申请公开(公告)号：US20220350072A1
公开(公告)日：2022-11-03
申请号：US17866842
申请日：2022-07-18
Applicant: LEIA INC.
Inventor： David A. Fattal , Thomas Hoekman , Colton Bukowsky , Ming Ma
Abstract: A micro-slit scattering element based backlight, a multiview display, and a method of backlight operation include reflective micro-slit scattering elements configured to provide emitted light having a predetermined light exclusion zone. The micro-slit scattering element based backlight includes a light guide configured to guide light and a plurality of the reflective micro-slit scattering elements having sloped reflective sidewalls configured to reflectively scatter out the guided light as the emitted light. The sloped reflective sidewalls of the reflective micro-slit scattering elements are configured to provide the predetermined light exclusion zone of the emitted light. The multiview display includes the reflective micro-slit scattering elements arranged as an array of micro-slit multibeam elements. The multiview display also includes an array of light valves to modulate the directional light beams to provide the multiview image, except within the predetermined light exclusion zone.
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公开(公告)号：US20220244447A1
公开(公告)日：2022-08-04
申请号：US17724431
申请日：2022-04-19
Applicant: LEIA INC.
Inventor： David A. Fattal , Thomas Hoekman , Colton Bukowsky , Ming Ma
Abstract: A multiview backlight, multiview display, and method of multiview backlight operation include micro-slit multibeam elements configured to provide emitted light having directional light beams with directions corresponding to view directions of a multiview image. The multiview backlight includes a light guide configured to guide light and an array of the micro-slit multibeam elements, each micro-slit multibeam element including a plurality of micro-slit sub-elements and being configured to reflectively scatter out a portion of the guided light as the emitted light. Each micro-slit sub-element of the micro-slit sub-element plurality includes a sloped reflective sidewall having a slope angle tilted away from the propagation direction of the guided light. The multiview display includes the multiview backlight and an array of light valves to modulate the directional light beams to provide the multiview image.
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14.发明申请公开(公告)号：US20220171118A1
公开(公告)日：2022-06-02
申请号：US17674776
申请日：2022-02-17
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma , Joseph D. Lowney
IPC: F21V8/00
Abstract: A backlight scattering element, multiview display, and method of backlight scattering element operation employ a high-index light guide layer in conjunction with a light guide and diffraction grating to provide emitted light. The backlight scattering element includes a light guide that guides light as guided light and a high-index light guide layer optically connected to the light guide and configured to extend a thickness of the light guide. The backlight scattering element also includes a diffraction grating adjacent to the high-index light guide layer to diffractively scatter out a portion of the guided light as emitted light. The multiview display includes a light guide having a first layer and a second layer, a refractive index of the second layer being greater than a refractive index of the first layer. The multiview display may modulate diffractively scattered out directional light beams to provide a multiview image.
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公开(公告)号：US20220146733A1
公开(公告)日：2022-05-12
申请号：US17580581
申请日：2022-01-20
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma
IPC: F21V8/00
Abstract: A collimated backlight and an electronic display employ a light guide having angle-preserving scattering feature and an absorption collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The absorption collimator includes an absorption element and is configured to convert light provided by a light source into collimated light to be guided as the guided light. The electronic display includes an array of light valves and may be configured as a multiview display or a privacy display.
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Patent Agency Ranking
公开(公告)号：US11169391B2
公开(公告)日：2021-11-09
申请号：US16591551
申请日：2019-10-02
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma
Abstract: A multiview backlight and mode-switchable backlight employ a planar backlight to emit scattered light and light-blocking layer having a plurality of apertures to provide a plurality of directional light beams from the scattered light. The mode-switchable backlight further includes another planar backlight configured to provide diffuse light in a two-dimensional (2D) operational mode, the plurality of directional light beams being provided in a three-dimensional (3D) mode. A 2D/3D mode-switchable display includes the mode-switchable backlight and a light valve array. A method of backlight operation includes directing scattered light from a planar backlight toward a light-blocking layer having a plurality of apertures and providing a plurality of directional light beams using an aperture of the aperture plurality.
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公开(公告)号：US11011121B2
公开(公告)日：2021-05-18
申请号：US16663167
申请日：2019-10-24
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma , Xuejian Li
IPC: G09G3/34 , H04N13/351 , H04N13/356 , H04N13/398 , H04N13/324 , H04N13/32 , H04N13/354 , H04N13/359 , F21V8/00
Abstract: A multiview backlight includes a first array active emitters configured to provide a first plurality of directional light beams and a second array of active emitters configured to provide a second plurality of directional light beams. The second array of active emitters is interleaved between active emitters of the first array of active emitters. Further, directional light beams of each of the first and second directional light beam pluralities have directions corresponding to view directions of a multiview display. A multiview display further includes an array of light valves configured to modulate the directional light beams to display a multiview image. An image resolution of the multiview image is configured to be dynamically selectable according to operational mode.
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公开(公告)号：US11004407B2
公开(公告)日：2021-05-11
申请号：US16659476
申请日：2019-10-21
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma , Xuejian Li
IPC: G09G3/34 , H04N13/351 , H04N13/356 , H04N13/398 , H04N13/324 , H04N13/32 , H04N13/354 , H04N13/359 , F21V8/00
Abstract: A multiview backlight and a multiview display employ active emitters configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. A size of the active emitter is comparable to a size of a view pixel in the multiview display. A distance between active emitters is commensurate with a distance between adjacent multiview pixels of the multiview display. A multiview display further includes an array of light valves configured to modulate the directional light beams to display a multiview image.
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公开(公告)号：US10969627B2
公开(公告)日：2021-04-06
申请号：US16907239
申请日：2020-06-20
Applicant: LEIA INC.
Inventor： David A. Fattal , Ming Ma , Xuejian Li
IPC: G02F1/13357 , G02F1/13 , G02F1/1335
Abstract: A mode-selectable backlight and privacy display employ directional scattering features to provide emitted light. The mode-selectable backlight includes a light guide, a first directional scattering feature to provide broad-angle emitted light from guided light having a first propagation direction within the light guide during a public mode, and a second directional scattering feature to provide directional emitted light from guided light having a second propagation direction within the light guide during a privacy mode. The directional emitted light the provided during the privacy mode is directed into a viewbox. The mode-selectable privacy display further includes light sources configured to provide the guided light having the first and second propagation directions along with an array of light valves configured to modulate the broad-angle emitted light as a public image and the directional emitted light as a private image visible within the viewbox.
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公开(公告)号：US10969531B2
公开(公告)日：2021-04-06
申请号：US16714772
申请日：2019-12-15
Applicant: LEIA INC.
Inventor： David A. Fattal , Xuejian Li , Ming Ma , Sonny Vo
IPC: F21V8/00
Abstract: A multiview backlight and a multiview display employ a microprism multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microprism multibeam element extending from a surface of the light guide. The microprism multibeam element has an input aperture configured to receive a portion of guided light and an output aperture configured to emit the plurality of directional light beams. The microprism multibeam element includes a microprism having an inclined sidewall configured to reflect the received guided light portion and provide the plurality of directional light beams. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display from the plurality of directional light beams.
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