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公开(公告)号：US20250068124A1
公开(公告)日：2025-02-27
申请号：US18825370
申请日：2024-09-05
Applicant: LIGHT FIELD LAB, INC.
Inventor： Jonathan Sean Karafin , Brendan Elwood Bevensee
Abstract: Holographic and diffractive optical encoding techniques for forming reflection or transmission holograms. The encoding device includes a substrate having an interference pattern that can propagate light along a light propagation path from one side of the substrate to another side of the substrate. Furthermore, an optical element may be used to propagate light according to a four-dimensional light field coordinate system.
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公开(公告)号：US20250053006A1
公开(公告)日：2025-02-13
申请号：US18798749
申请日：2024-08-08
Applicant: Envisics Ltd
Inventor： Alexander Cole
Abstract: A holographic projection system is provided. The holographic projection system includes a first hologram and a second hologram. The holographic projection system is arranged to spatially modulate light in accordance with the first hologram to form a first holographic wavefront and to spatially modulate light in accordance with the second hologram to form a second holographic wavefront. The holographic projection system further includes a waveguide including an input port that includes a first input area arranged to receive the first holographic wavefront and a second input area arranged to receive the second holographic wavefront. The waveguide further includes a pair of surfaces arranged to waveguide the first and second holographic wavefront therebetween. The waveguide is arranged such the first holographic wavefront is combined with the second holographic wavefront after one or more internal reflections of the first holographic wavefront between the pair of surfaces.
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公开(公告)号：US20250044740A1
公开(公告)日：2025-02-06
申请号：US18363869
申请日：2023-08-02
Inventor： Shih-Chi CHEN , Yintao WANG , Bingxu CHEN
Abstract: Disclosed is a closed-loop wavefront shaping system, including: a parallel computing module; a task planning module; and a memory management module; wherein the system is implemented on: at least one computing device for generating digital holograms; at least one displaying device for displaying the digital holograms to control an incoming coherent light beam; and at least one sensor for detecting feedback signals.
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公开(公告)号：US12197091B2
公开(公告)日：2025-01-14
申请号：US17285681
申请日：2020-09-07
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Gaolei Xue , Wei Wang , Xiaochuan Chen
IPC: G02F1/1362 , G03H1/00 , G03H1/22
Abstract: A liquid crystal spatial light modulator and a three-dimensional display device are provided. The liquid crystal spatial light modulator includes a base substrate and a plurality of pixel units arranged in an array. Each pixel unit includes one pixel electrode, and the pixel electrode is located on the base substrate. Each pixel unit includes a light shielding structure, and the light shielding structure is configured to divide the each pixel unit into a plurality of pixel regions.
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公开(公告)号：US20240427286A1
公开(公告)日：2024-12-26
申请号：US18828998
申请日：2024-09-09
Applicant: Eaglemae Ventures LLC
Inventor： Robert A. Callagy , James J. Caprio
Abstract: A video display system for providing vision correction for multiple users may include a display device having a holographic layer and a vision correction layer. The system may also include a processor coupled to the display device to receive a first prescription corresponding to a first user and a second prescription corresponding to a second user, and to modulate the display device so that the first user at a first angle and the second user at a second angle can view a non-distorted image from the display device.
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Patent Agency Ranking
公开(公告)号：US20240385491A1
公开(公告)日：2024-11-21
申请号：US18787388
申请日：2024-07-29
Applicant: SAMSUNG ELECTRONICS CO, LTD.
Inventor： Kanghee WON , Young KIM , Jungkwuen AN , Hongseok LEE
IPC: G02F1/29 , G02B27/00 , G02B30/00 , G02F1/1337 , G02F1/1343 , G02F1/137 , G03H1/00 , G03H1/22
Abstract: A beam deflector includes a first electrode layer including a plurality of line electrodes extending in a first direction and arranged parallel to each other in a second direction crossing the first direction; a second electrode layer separated from the first electrode layer by a predetermined distance to face the first electrode layer; and a deflection layer between the first electrode layer and the second electrode layer and having a plurality of optically anisotropic molecules controlled by an electric field formed between the first electrode layer and the second electrode layer. Each of the optically anisotropic molecules has an ellipse shape having a major axis and a minor axis, wherein the major axis is arranged to head for the first direction.
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公开(公告)号：US20240385438A1
公开(公告)日：2024-11-21
申请号：US18687222
申请日：2022-09-20
Applicant: Envisics Ltd
Inventor： Daniel Burnham , Timothy Smeeton
IPC: G02B27/01 , B60K35/235 , G02B6/06 , G02B6/26 , G02F1/1362 , G03H1/00 , G03H1/22
Abstract: A holographic system comprises a spatial light modulator and a pupil expander. The spatial light modulator is arranged to display a hologram of an image and to output spatially modulated light encoded with the hologram. In embodiments, the pupil expander comprises a plurality of optical fibres, each optical fibre having an input end and an output end. The pupil expander is arranged so that spatially modulated light output by the spatial light modulator is coupled into the input end of each optical fibre and output from the output end thereof to a viewing area. Each of the plurality of optical fibres is arranged to propagate the received spatially modulated light received at its input end so as to expand an exit pupil of the system in a first dimension, typically corresponding to a dimension of the viewing area.
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公开(公告)号：US12142308B2
公开(公告)日：2024-11-12
申请号：US18390587
申请日：2023-12-20
Applicant: Neursciences LLC
Inventor： Charles Northrup , Jefferson Odhner , Richard Rarey
IPC: G11B7/0065 , G03H1/02 , G03H1/26 , G11B5/00 , G11B7/125 , G11B7/127 , G11B7/1353 , G11B7/1362 , G11C13/04 , G03H1/00 , G03H1/22
Abstract: A system includes a multiplexed optical identifier and a reader for the optical identifier. The multiplexed optical identifier includes an optical substrate, and a plurality of volume holograms in the optical substrate. The reader includes an illumination source and a camera. The illumination source is configured to direct light into the optical identifier to produce an image of a corresponding one of the volume holograms at the camera, and the camera is configured to capture the image, which is stored in a digital format by the system. The multiplexed optical identifier contains more than one code page, wherein each of the code pages is used for a different purpose.
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公开(公告)号：US20240370980A1
公开(公告)日：2024-11-07
申请号：US18654864
申请日：2024-05-03
Applicant: Envisics Ltd
Inventor： Thomas Crespel , Rory Cooney
Abstract: A method of calculating a map in real-time includes receiving a calibrated map including a plurality of mappings. Each mapping is for transforming a respective two-dimensional coordinate of an array of two-dimensional coordinates to compensate for distortion at a predetermined temperature. The method includes receiving an array of vectors including a vector for each two-dimensional coordinate. The method includes receiving a current temperature of the holographic projector. The method includes determining a scaling factor based on the difference between the current temperature and the predetermined temperature. The method includes calculating a modified map based on the current temperature by, for each coordinate of the array of two-dimensional coordinates: multiplying the vector that relates to the respective coordinate of the array of two-dimensional coordinates by the scaling factor to output a scaled vector; applying the scaled vector to the respective mapping of the calibrated map; and outputting the modified map.
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公开(公告)号：US12111615B2
公开(公告)日：2024-10-08
申请号：US17375609
申请日：2021-07-14
Applicant: LIGHT FIELD LAB, INC.
Inventor： Jonathan Sean Karafin , Brendan Elwood Bevensee
CPC classification number: G03H1/0866 , G02B5/32 , G03H1/0248 , G03H1/2202 , G03H2001/2228 , G03H2222/34 , G03H2223/14 , G03H2223/16 , G03H2223/23
Abstract: Holographic and diffractive optical encoding techniques for forming reflection or transmission holograms. The encoding device includes a substrate having an interference pattern that can propagate light along a light propagation path from one side of the substrate to another side of the substrate. Furthermore, an optical element may be used to propagate light according to a four-dimensional light field coordinate system.
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