Patents Assigned to LEIA INC.
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Patent number: 11402689Abstract: A mixed-format backlight and display employ a multiview zone to provide directional emitted light corresponding to a multiview portion of a mixed-format displayed image and a two-dimensional (2D) zone to provide broad-angle emitted light corresponding to a 2D portion of the mixed-format displayed image. A size of a multibeam emitter of the multiview zone is comparable to a size of a light valve of the mixed-format display.Type: GrantFiled: December 26, 2020Date of Patent: August 2, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11391879Abstract: Multiview backlighting having a color-tailored emission pattern provides directional light beams corresponding to a plurality of different views of a multiview image. A multiview backlight includes a light guide configured to guide light as guided light and a color-tailored multibeam element. The color-tailored multibeam element is configured to provide emitted light having the color-tailored emission pattern from the guided light. The emitted light includes a plurality of directional light beams having different principal angular directions corresponding to respective different view directions of a multiview display. The color-tailored emission pattern corresponds to an arrangement of color sub-pixels of a view pixel in the multiview display.Type: GrantFiled: April 22, 2021Date of Patent: July 19, 2022Assignee: LEIA INC.Inventors: David A. Fattal, Ming Ma
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Patent number: 11378729Abstract: A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a grating spreader. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The grating spreader includes a diffraction grating and is configured to convert light provided by a light source into spatio-angularly homogenous light to be guided as the guided light. The multiview display includes an array of light valves as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a light valve of the light valve array.Type: GrantFiled: April 8, 2021Date of Patent: July 5, 2022Assignee: LEIA INC.Inventors: David A. Fattal, Joseph D. Lowney
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Patent number: 11360259Abstract: A static multiview display includes a plurality of light emitters offset in a longitudinal direction; a light guide configured to guide light in the longitudinal direction; a collimating light coupler configured to receive light from the light emitters and coupling the light to the light guide; and an array of diffraction gratings to extract light guided by the light guide to provide a multiview image having a direction that is a function of both color and a propagation angle of light guided by the light guide.Type: GrantFiled: August 21, 2020Date of Patent: June 14, 2022Assignee: LEIA INC.Inventors: Xuejian Li, David A. Fattal, Francesco Aieta, Ming Ma
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Patent number: 11347053Abstract: A backlit transparent display and a transparent display system provide a displayed image while enabling a background scene to be visible through the display. The backlit transparent display includes a light guide, a plurality of scattering elements, and an array of light valves configured to modulate emitted light scattered from the light guide to provide modulated emitted light representing a displayed image. Transparency of the backlit transparent display is configured to enable the background scene to be visible through the backlit transparent display. The transparent display system includes the array of light valves and a transparent backlight. The transparent display system is configured to provide the displayed image as superimposed on the background scene visible through the transparent display system.Type: GrantFiled: April 10, 2020Date of Patent: May 31, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11327337Abstract: A mode-switchable backlight and mode-switchable display employ a first planar backlight to emit broad-angle emitted light during a first mode and a second planar backlight to emit directional emitted light during a second mode. The second planar backlight includes a plate light guide and an array of multibeam elements configured to scatter out guided light from the light guide during a second mode as the directional emitted light including a plurality of directional light beams having principal angular directions corresponding to view directions of a multiview image. The mode-switchable display further includes a light valve array configured to modulate the broad-angle emitted light to provide a two-dimensional image during the first mode and to modulate the directional emitted light to provide a multiview image during the second mode.Type: GrantFiled: June 5, 2020Date of Patent: May 10, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11327236Abstract: A grating-coupled light guide concentrates light and diffractively redirects the concentrated light at a non-zero propagation angle as guided light having a predetermined spread angle. The grating-coupled light guide includes a light guide, an optical concentrator, and a grating coupler. The optical concentrator is configured to concentrate light from a light source as concentrated light and the grating coupler is configured to diffractively redirect the concentrated light into the light guide as the guided light. Characteristics of the optical concentrator and grating coupler are configured in combination to determine the non-zero propagation angle and predetermined spread angle. A grating-coupled display system further includes an array of light valves configured to modulate emitted light as a displayed image.Type: GrantFiled: March 18, 2020Date of Patent: May 10, 2022Assignee: LEIA INC.Inventors: Xuejian Li, David A. Fattal, Francesco Aieta
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Patent number: 11320578Abstract: A multiview display, system and method includes an array of light valves having a repeating plurality of color sub-pixels and arranged as a plurality of multiview pixels configured to modulate directional light beams as color pixels of views of a multiview image, and an array of multibeam emitters configured to provide the directional light beams. A location of a multiview pixel relative to a location of color sub-pixels is configured to be shifted as a function of a position of a user of the multiview display to provide dynamic color sub-pixel remapping.Type: GrantFiled: June 20, 2021Date of Patent: May 3, 2022Assignee: LEIA INC.Inventors: David A. Fattal, Daniel Geisler, Jr.
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Patent number: 11314099Abstract: A transparent display and a transparent multiview display an image while enabling a background scene to be visible through the display. The transparent display includes a light guide having a scattering feature and an array of light valves configured to modulate emitted light scattered from the light guide to provide modulated emitted light representing a displayed image. Transparency of a combination of the light guide and the array of light valves is configured to enable the background scene to be visible through the transparent display. The transparent multiview display includes the light guide and a plurality of multibeam elements configured to scatter guided light from the light guide as a plurality of directional light beam. The transparent multiview display further includes an array of light valves to modulate the directional light beams to provide the display image as a multiview image.Type: GrantFiled: March 31, 2019Date of Patent: April 26, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11310478Abstract: A multiview camera array and multiview system employ camera sub-arrays having at least one camera in common to capture a multiview image of a scene for display on a multiview display. The multiview camera array includes a first sub-array of cameras and a second sub-array of cameras. Cameras of the first and second camera sub-arrays are spaced apart from one another by a first baseline distance and a second baseline distance, respectively. The multiview system further includes a multiview display configured to display the multiview image. A method of capturing a multiview image includes capturing a first plurality of different views of the scene with the first sub-array of cameras and capturing a second plurality of different views of the scene using the second sub-array of cameras.Type: GrantFiled: March 25, 2020Date of Patent: April 19, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11307344Abstract: A dual view zone backlight and dual-mode display employ a first backlight region to provide directional emitted light toward a first view zone and a second backlight region to provide broad-angle emitted light toward the first and a second view zone in a first mode. The dual-mode display includes a second backlight to provide broad-angle light toward both the first view zone and the second view zone in a second mode.Type: GrantFiled: September 23, 2019Date of Patent: April 19, 2022Assignee: LEIA INC.Inventors: David A. Fattal, Andre Krebbers
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Patent number: 11256022Abstract: A polarization recycling backlight and a multiview display employ a polarization-selective scattering feature configured to preferentially scatter out a first polarization component of guided light and a polarization conversion structure configured to convert a portion of a second polarization component of the guided light into the first polarization component. The polarization conversion structure includes a subwavelength grating.Type: GrantFiled: July 12, 2020Date of Patent: February 22, 2022Assignee: LEIA INC.Inventors: Francesco Aieta, Xuejian Li, Thomas Hoekman, David A. Fattal
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Patent number: 11232729Abstract: A multiview display and method employ light valves configured to be driven according to a polarity inversion protocol along with multibeam emitters arranged in offset rows. The multiview display includes an array of the multiview pixels comprising the light valves and a multibeam backlight having a plurality of the multibeam emitters arranged in the offset rows. A method of multiview display operation includes emitting directional light beams using an array of multibeam elements in offset rows and modulating the directional light beams using an array of light valves to display an image. Sets of light valves of the light valve array correspond to multiview pixels of the multiview display and the light valve array is driven according to a polarity inversion protocol. In both the multiview display and the method, adjacent offset rows are offset by a distance between repeating polarities of the plurality inversion protocol in a row direction.Type: GrantFiled: March 18, 2021Date of Patent: January 25, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11231539Abstract: A multiview backlight and a multiview display employ multibeam elements configured to provide a tilted plurality of light beams having different principal angular directions corresponding to different view directions of a plurality of views of the multiview display. Further, the tilted plurality of light beams has a tilt toward a center of a view zone of the multiview display to provide converging views. The multiview backlight includes a light guide and an array of the multibeam elements. The multiview display further includes multiview pixels that include view pixels to modulate the tilted plurality of light beams having the tilt and the different principal angular directions.Type: GrantFiled: November 23, 2020Date of Patent: January 25, 2022Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11203346Abstract: Vehicle monitoring employs three-dimensional (3D) information in a region adjacent to a vehicle to visually highlight objects that are closer to the vehicle than a threshold distance. A vehicle monitoring system includes a 3D scanner to scan the region adjacent to the vehicle and provide a 3D model including a spatial configuration of objects located within the scanned region. The vehicle monitoring system further includes a 3D electronic display to display a portion of the scanned region using the 3D model and to visually highlight an object within the displayed portion that is located less than the threshold distance from the vehicle.Type: GrantFiled: May 29, 2020Date of Patent: December 21, 2021Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11200855Abstract: A mode-switchable backlight and mode-switchable privacy display provide narrow-angle emitted light during a first mode and broad-angle emitted light in a second mode, the broad-angle emitted light being a combination of the narrow-angle emitted light and bidirectional emitted light. The mode-switchable backlight includes a first directional backlight and a second directional backlight. The first directional backlight is configured to provide the narrow-angle emitted light during both of the first mode and second mode, while the second directional backlight is configured to provide the bidirectional emitted light exclusively during the second mode. The mode-switchable privacy display includes an array of light valves configured to modulate the narrow-angle emitted light as a private displayed image during the first or privacy mode and to modulate broad-angle emitted light as a public displayed image during the second or public mode.Type: GrantFiled: September 11, 2019Date of Patent: December 14, 2021Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11194086Abstract: Three-dimensional (3D) electronic displays provide different 3D views and employ one or both of an array of multibeam diffraction gratings arranged in offset rows and light valves having color filters. The displays include a plate light guide configured to guide light beams at a non-zero propagation angle, a multibeam diffraction grating configured to couple out a portion of the guided light beams as a plurality of light beams having different principal angular directions representing the different 3D views, and light valves configured to modulate the differently directed, coupled-out light beams. The multibeam diffraction grating may be a member of the array arranged in offset rows and the display may further include light valves having color filters. Alternately, the light valves include color filters and the display may further include the array of multibeam diffraction gratings arranged in offset rows.Type: GrantFiled: July 31, 2017Date of Patent: December 7, 2021Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11169391Abstract: 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.Type: GrantFiled: October 2, 2019Date of Patent: November 9, 2021Assignee: LEIA INC.Inventors: David A. Fattal, Ming Ma
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Patent number: 11143810Abstract: A unilateral backlight and a unilateral multiview display employ an array of unilateral diffractive elements configured to provide directional light beams having a unilateral direction. A unilateral diffractive element of the unilateral diffractive element array comprises a slanted diffraction grating configured to provide a directional light beam by diffractive scattering of light guided in a light guide. The unilateral multiview display further includes light valves configured to modulate a plurality of directional light beams as multiview image having the unilateral direction.Type: GrantFiled: September 26, 2019Date of Patent: October 12, 2021Assignee: LEIA INC.Inventors: David A. Fattal, Francesco Aieta
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Patent number: 11143811Abstract: Multiview backlighting employs a fluorescent multibeam element having a color-tailored emission pattern to provide directional light beams corresponding to a plurality of different views of a multiview image. A multiview backlight includes a light guide configured to guide light as guided light and a fluorescent multibeam element. The fluorescent multibeam element includes a fluorescent material and is configured to provide emitted light having a color-tailor emission pattern from the guided light. The emitted light includes a plurality of directional light beams having different principal angular directions corresponding to respective different view directions of a multiview display and the color-tailored emission pattern corresponds to an arrangement of color sub-pixels of a view pixel in the multiview display.Type: GrantFiled: June 20, 2019Date of Patent: October 12, 2021Assignee: LEIA INC.Inventors: David A. Fattal, Ming Ma