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1.发明公开公开(公告)号：US20240337983A1
公开(公告)日：2024-10-10
申请号：US18682607
申请日：2022-08-11
Inventor： Raymond Kostuk , Benjamin Chrysler , Jianbo Zhao
CPC classification number: G03H1/0486 , G03H1/0248 , G03H2001/0439 , G03H2001/0491 , G03H2240/53
Abstract: Methods, devices and systems are described that enable monitoring the diffraction efficiency of holographic material in real-time while they are being formed. One example method includes directing a reference beam and an object beam toward a holographic material for formation of a diffraction grating and blocking one of the beams for at least a portion of time during which the diffraction grating is being formed. The method further includes, upon blockage of one of the beams, based on power level measurements, determining whether or not a first diffraction efficiency is reached. If the first diffraction efficiency is reached, one of the reference or the object beams is disabled or blocked while the other beam illuminates the holographic material with a particular duty cycle. Further measurements of the diffraction efficiency are made until the final diffraction efficiency is reached.
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2.发明公开公开(公告)号：US20240272339A1
公开(公告)日：2024-08-15
申请号：US18167742
申请日：2023-02-10
Applicant: Meta Platforms Technologies, LLC
Inventor： Sawyer MILLER , Hsien-Hui CHENG , Mengfei WANG , Gary D. SHARP , Lu LU
CPC classification number: G02B5/1833 , G02B5/3016 , G02B5/32 , G02B27/283 , G03H1/0402 , G03H2001/0439 , G03H2223/13
Abstract: A device includes a Pancharatnam-Berry phase (“PBP”) film stack configured to diffract an input beam as a first polarized beam and a second polarized beam having opposite handednesses. A combined diffraction efficiency of the PBP film stack for the first and second polarized beams is greater than a predetermined value. The device also includes a compensation film stack coupled with the PBP film stack, and configured to respectively convert the first polarized beam and the second polarized beam into a third polarized beam and a fourth polarized beam having the opposite handednesses. The first and second polarized beams include at least one elliptically polarized beam, and the third and fourth polarized beams are two circularly polarized beams. The compensation film stack is configured to convert the at least one elliptically polarized beam into at least one of the two circularly polarized beams.
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公开(公告)号：US11953857B2
公开(公告)日：2024-04-09
申请号：US17021466
申请日：2020-09-15
Applicant: DAI NIPPON PRINTING CO., LTD.
Inventor： Makio Kurashige
IPC: G03H1/32 , F21V5/00 , F21V14/00 , F21V14/04 , G02B3/00 , G02B3/08 , G02B5/02 , G02B5/32 , G02B27/48 , G03B21/20 , G03B33/06 , G03H1/00 , G03H1/02 , G03H1/04 , G03H1/22 , G03H1/26 , H04N9/31 , F21Y115/10 , F21Y115/30
CPC classification number: G03H1/32 , F21V5/004 , F21V14/00 , F21V14/04 , G02B3/0006 , G02B3/08 , G02B5/0252 , G02B5/32 , G02B27/48 , G03B21/2033 , G03B21/208 , G03B33/06 , G03H1/0005 , G03H1/02 , G03H1/0402 , G03H1/22 , G03H1/2286 , H04N9/3129 , F21Y2115/10 , F21Y2115/30 , G03H2001/0204 , G03H2001/0212 , G03H2001/0216 , G03H1/0244 , G03H1/0248 , G03H2001/0413 , G03H2001/0415 , G03H2001/0428 , G03H2001/0439 , G03H2001/045 , G03H2001/2292 , G03H2001/262 , G03H2222/36
Abstract: An illumination apparatus using a coherent light source, comprising: a coherent light source that generates a coherent light beam, a microlens array including a collection of a large number of independent lenses; and a light beam scanning device that irradiates the light beam onto the microlens array and carries out scanning so that an irradiation position and an irradiation direction of the light beam on the microlens array changes with time. Each of the independent lenses included in the microlens array has a function of refracting light irradiated from the light beam scanning device and forming an irradiation region on a light receiving surface. The light receiving surface is not a refractive element, and is configured so that irradiation regions formed by the independent lenses become substantially a same common region on the light receiving surface. The irradiation regions being irradiated by light which is refracted by the independent lenses.
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公开(公告)号：US20230305208A1
公开(公告)日：2023-09-28
申请号：US18197007
申请日：2023-05-12
Applicant: LOCKHEED MARTIN CORPORATION
Inventor： Joseph Robert BUCK
CPC classification number: G02B5/3016 , G03H1/0402 , G03H2001/0439 , G03H2222/31 , G03H2222/36 , G03H2240/11
Abstract: A method of manufacturing a thin film optical apparatus includes providing a substrate and applying an alignment layer over the substrate. The alignment layer ranges from about 50 to 100 nm in thickness. The method includes imprinting a hologram with a desired optic pattern onto the alignment layer and applying at least one layer of mesogen material over the alignment layer.
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公开(公告)号：US11714382B2
公开(公告)日：2023-08-01
申请号：US17053669
申请日：2019-05-07
Inventor： Benjamin Chrysler , Raymond K. Kostuk
CPC classification number: G03H1/202 , G03H1/0248 , G03H1/0404 , G03H2001/0439 , G03H2223/18
Abstract: Provided are methods for replication (copying) of volume Holographic Optical Elements (HOE) using a master hologram in optical contact with a prism, wherein the master hologram comprises distinct object and reference beam coupling elements, and wherein in the replication process light is coupled from one face of the prism and transmitted through another face of the prism using the distinct object and reference beam coupling elements. Methods for making the master hologram by sequentially forming the distinct object and reference beam coupling elements therein are provided. Further methods for encoding aperture functions directly to the master hologram are provided. Yet further methods provide for forming a copy HOE in an array configuration using a step-and-repeat method wherein the copy HOE is translated laterally by a specified distance before the next exposure is made.
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Patent Agency Ranking
公开(公告)号：US11656396B2
公开(公告)日：2023-05-23
申请号：US16832770
申请日：2020-03-27
Applicant: Illinois Tool Works Inc.
Inventor： Dean Randazzo
IPC: G02B5/32 , G03H1/02 , G02B5/18 , B23K26/354 , B23K26/00 , B23K26/352 , B23K26/361 , G02B1/04 , G03H1/04 , G03H1/22 , B23K103/00 , B23K101/36 , B23K101/34
CPC classification number: G02B5/32 , B23K26/0006 , B23K26/352 , B23K26/354 , B23K26/355 , B23K26/361 , G02B1/04 , G02B5/1857 , G03H1/0244 , G03H1/0402 , G03H1/0476 , B23K2101/34 , B23K2101/36 , B23K2103/42 , G03H2001/0296 , G03H2001/0439 , G03H2001/0441 , G03H2001/0482 , G03H2001/0497 , G03H2001/2265 , G03H2224/02 , G03H2240/52 , G03H2260/62
Abstract: An apparatus for producing an optically variable film includes a laser configured to emit a beam, a telescoping lens section having a first lens and a second lens spaced apart by a first distance and an interferometer configured to direct the beam toward a workpiece. The laser may be operated at a predetermined power level and the first and second lenses are sized and spaced relative to one another to direct the beam onto the workpiece at about 200-230 dots per inch. The workpiece may include a polyethylene terephthalate (PET) layer configured to be ablated by the beam, forming a microstructure in the surface of the layer. The microstructure may be randomized and used to present non-chroma visual effects.
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公开(公告)号：US20230152750A1
公开(公告)日：2023-05-18
申请号：US17948233
申请日：2022-09-20
Applicant: Meta Platforms Technologies, LLC
Inventor： Junren WANG , Xiayu FENG , Mengfei WANG , Lu LU
CPC classification number: G03H1/0402 , G02B5/32 , G02B27/0179 , G02B27/0172 , G02B5/3016 , G02B2027/0178 , G02B2027/0187 , G02B2027/0109 , G03H2001/0439 , G03H2001/0413 , G03H2260/12 , G03H2222/35 , G02B2027/0174 , G06F3/013
Abstract: A method includes providing a radiation with a predetermined intensity profile. The method also includes providing a photo-sensitive medium layer including a mixture of a photo-sensitive material and an absorbing additive. The absorbing additive has a predetermined non-uniform distribution in at least one of a direction within a film plane or a thickness direction of the photo-sensitive medium layer. The predetermined non-uniform distribution of the absorbing additive is configured to result in a predetermined non-uniform absorption of the radiation. The method also includes exposing the photo-sensitive medium layer to the radiation to form a polymer film. The optical film includes at least one predetermined birefringence variation in at least one of a direction within a film plane or a thickness direction of the polymer film.
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公开(公告)号：US20180196265A1
公开(公告)日：2018-07-12
申请号：US15740971
申请日：2016-06-30
Applicant: Essilor International
Inventor： Aude BOUCHIER , Jean-Paul CANO
CPC classification number: G02B27/0172 , G02B3/0006 , G02B5/045 , G02B27/0179 , G02B27/1066 , G02B2027/0123 , G02B2027/0127 , G02B2027/0138 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G02F1/163 , G03H1/0402 , G03H2001/0439
Abstract: Methods and systems for image display with a head-mounted device involve the use of a light-field display. Such a display is useful for providing augmented reality.
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公开(公告)号：US20180188690A1
公开(公告)日：2018-07-05
申请号：US15398607
申请日：2017-01-04
Applicant: METAMATERIAL TECHNOLOGIES USA, INC.
Inventor： Boris Kobrin , Oliver Seitz , Efthymios Kallos , Georgios Palikaras
CPC classification number: G03H1/202 , G03H1/0248 , G03H1/0402 , G03H1/0476 , G03H1/0486 , G03H2001/0415 , G03H2001/0439 , G03H2001/0441 , G03H2001/0473 , G03H2001/0482 , G03H2001/205 , G03H2222/34 , G03H2222/36 , G03H2222/53 , G03H2223/24 , G03H2250/42
Abstract: Holograms are generated using a rotatable transparent cylinder and a coherent light source placed inside or outside of such cylinder to record a hologram in a photosensitive film having a reflective film on one side. Recording is done in continuous mode while cylinder is rotating and photosensitive film is translating underneath in contact with cylinder due to friction forces provided by a layer of sticky polymer.
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公开(公告)号：US20180188689A1
公开(公告)日：2018-07-05
申请号：US15394416
申请日：2016-12-29
Applicant: INTEL CORPORATION
Inventor： DAVID ZIEGLER , MICKAEL GUILLAUMEE , CHRISTOPHE MOSER
CPC classification number: G03H1/181 , G02B5/32 , G02B27/0172 , G02B27/58 , G02B2027/0174 , G02B2027/0178 , G03H1/02 , G03H1/0248 , G03H1/0402 , G03H1/2645 , G03H1/265 , G03H2001/0439 , G03H2001/266 , G03H2260/30
Abstract: Various embodiments are generally directed to techniques for processing holographic recording media. Some embodiments are particularly directed to processing a raw holographic recording medium into an apodized holographic recording medium. For example, a raw holographic recording medium may include a plurality of photosensitive molecules uniformly distributed throughout that are able to record an interference pattern to create a hologram. However, when a photosensitive molecule is desensitized, such as by exposure to incoherent light, its photosensitivity is lost and the molecule may no longer be able to record an interference pattern of coherent light. Various embodiments described herein may include an apodized holographic recording medium that has been exposed to incoherent light in a manner to desensitize some photosensitive molecules therein such that the remaining photosensitive molecules have a non-uniform distribution.
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