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公开(公告)号：US20240304216A1
公开(公告)日：2024-09-12
申请号：US18636249
申请日：2024-04-15
IPC分类号： G11B7/24044 , G11B7/0065 , G11B7/135
CPC分类号： G11B7/24044 , G11B7/0065 , G11B7/135
摘要： In an optical data transfer system, a beam modulator is configured to embed a set of data in an input beam. A multimode optical waveguide network has an in-coupling region for receiving the input beam. The multimode optical waveguide network is configured to guide the input beam to an out-coupling region of the multimode optical waveguide network. A spatial coherent detector is configured to measure a phase and an amplitude of an output optical field at multiple locations. The output optical field is at least partially defined by the input beam and thus exhibiting distortion effects caused by the passage of the beam through the multimode waveguide network. Signal processing is applied to an output of the spatial coherent detector, in order to compensate for the distortion effects, and thereby recover, from the output of the spatial coherent detector, the set of data embedded in the input beam.
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公开(公告)号：US11990165B2
公开(公告)日：2024-05-21
申请号：US17905684
申请日：2021-03-15
IPC分类号： G11B5/00 , G11B7/0065 , G11B7/135 , G11B7/24044
CPC分类号： G11B7/24044 , G11B7/0065 , G11B7/135
摘要： In an optical data transfer system, a beam modulator is configured to embed a set of data in an input beam. A multimode optical waveguide network has an in-coupling region for receiving the input beam. The multimode optical waveguide network is configured to guide the input beam to an out-coupling region of the multimode optical waveguide network. A spatial coherent detector is configured to measure a phase and an amplitude of an output optical field at multiple locations. The output optical field is at least partially defined by the input beam and thus exhibiting distortion effects caused by the passage of the beam through the multimode waveguide network. Signal processing is applied to an output of the spatial coherent detector, in order to compensate for the distortion effects, and thereby recover, from the output of the spatial coherent detector, the set of data embedded in the input beam.
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公开(公告)号：US11307494B2
公开(公告)日：2022-04-19
申请号：US16764421
申请日：2019-09-10
申请人： LG CHEM, LTD.
发明人： Heon Kim , Seokhoon Jang , Se Hyun Kwon , Yeongrae Chang , Jinseok Byun
IPC分类号： G03F7/00 , G03F7/033 , G03F7/027 , G03H1/02 , G11B7/24044 , C08F220/18
摘要： The present disclosure relates to a hologram medium comprising: a polymer substrate including a polymer resin in which a silane-based functional group is located in a main chain or a branched chain, wherein a fine pattern is formed on at least one surface of the polymer substrate, and an optical element.
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4.发明授权公开(公告)号：US10752780B2
公开(公告)日：2020-08-25
申请号：US16004152
申请日：2018-06-08
发明人： Tao Gu , Bogumila Rachwal , Ozair Siddiqui , Stanislaw Rachwal , Isamu Kitahara , Sergey Simavoryan , Peng Wang , Michiharu Yamamoto
IPC分类号： C09B62/008 , G02B1/04 , G02B5/23 , C09D133/12 , C08L33/12 , G11B7/24044 , C08K5/23 , G11B7/244 , G11B7/245 , C09K19/60 , C07C255/65 , C07D231/12 , C07D239/26 , C07D249/06 , C07D261/08 , C07D213/42 , C09B29/01 , C09B29/08
摘要： Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.
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公开(公告)号：US10514657B2
公开(公告)日：2019-12-24
申请号：US14693999
申请日：2015-04-23
发明人： Thomas Roelle , Friedrich-Karl Bruder , Thomas Fäcke , Marc-Stephan Weiser , Dennis Hönel , Christian Diedrich
IPC分类号： G16C10/00 , G16C20/30 , G03F7/00 , G03F7/004 , G06F7/548 , G03F7/035 , G03H1/02 , G11B7/24044 , G11B7/245 , G03H1/04 , G11B7/0065
摘要： The invention relates to a method for selecting compounds which can be used as additives in photopolymer formulations for producing light holographic media, and to photopolymer formulations which contain at least one softener which are selected according to the claimed method. The invention also relates to the use of photopolymer formulations for producing holographic media.
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6.发明申请公开(公告)号：US20190202946A1
公开(公告)日：2019-07-04
申请号：US16325352
申请日：2017-08-30
申请人： SONY CORPORATION
发明人： Hisaya HARA , Eri IGARASHI , Kenshiro KAWASAKI
摘要： To provide a photosensitive composition for hologram recording that enables further improvement in diffraction characteristic.—A photosensitive composition for hologram recording that includes at least two kinds of photopolymerizable monomers, a photopolymerization initiator, a binder resin, and a polymerization inhibitor. The at least two kinds of photopolymerizable monomers are a monofunctional monomer and a polyfunctional monomer.
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公开(公告)号：US09804490B2
公开(公告)日：2017-10-31
申请号：US15105138
申请日：2014-12-16
发明人： Thomas Rölle , Horst Berneth , Friedrich-Karl Bruder , Dennis Hönel , Thomas Fäcke , Günther Walze , Rainer Hagen , Christian Diedrich
IPC分类号： G03H1/04 , G03H1/28 , G03F7/031 , G03F7/027 , G03F7/035 , G03F7/00 , G03F7/004 , G03F7/029 , G03H1/02 , G02B1/04 , G11B7/24044
CPC分类号： G03F7/001 , G02B1/04 , G03F7/0046 , G03F7/027 , G03F7/029 , G03F7/035 , G03H1/02 , G03H2001/0264 , G03H2260/12 , G11B7/24044 , C08L75/04
摘要： The present invention provides a novel photopolymer formulation comprising matrix polymers, writing monomer and a photoinitiator and further comprising a compound of formula (1) where A1, A2 and A3 are each independently hydrogen, fluorine, chlorine, bromine or iodine, R1, R2, R3, R4 and R5 are each independently hydrogen, halogen, cyano, nitro, amino, alkylimino, azide, isonitrile, enamino, formyl, acyl, carboxyl, carboxylate, carboxamide, orthoester, sulphonate, phosphate, organosulphonyl, organosulphoxidyl, optionally fluorinated alkoxy or an optionally substituted aromatic, heteroaromatic, aliphatic, araliphatic, olefinic or acetylenic radical while suitable radicals may be connected together via bridge of any desired substitution, or in that two or more compounds of formula (I) may be connected together via at least one of the radicals R1, R2, R3, R4 and R5, in which case these radicals therein constitute a 2- to 4-tuply functional bridge, with the proviso that at least one of the radicals R1, R2, R3, R4 and R5 is not hydrogen. Further subjects of the invention are a photopolymer comprising matrix polymers, a writing monomer and photoinitiator, a holographic medium comprising a photopolymer formulation of the present invention or being obtainable by use thereof, the use of a holographic medium of the present invention and also a process for producing a holographic medium by using a photopolymer formulation of the present invention.
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公开(公告)号：US09753431B2
公开(公告)日：2017-09-05
申请号：US14131676
申请日：2012-05-25
申请人： Xiaolin Xie , Haiyan Peng , Xingping Zhou , Chengfu Zheng , Hongwei Ge
发明人： Xiaolin Xie , Haiyan Peng , Xingping Zhou , Chengfu Zheng , Hongwei Ge
IPC分类号： C08F2/52 , C08F2/42 , G03H1/04 , C08F2/50 , G03F7/00 , G03F7/029 , G03F7/031 , G11B7/24044 , G11B7/245 , G03H1/18
CPC分类号： G03H1/04 , C08F2/50 , G03F7/001 , G03F7/029 , G03F7/031 , G03H1/181 , G03H2260/12 , G11B7/24044 , G11B7/245
摘要： The present invention provides a visible light photoinitiating system for preparing a holographic photopolymer material with high-diffraction efficiency. The photoinitiating system comprises a photosensitizer and a co-initiator, and its mechanism is that the photosensitizer transforms from ground state to excited state after absorbing photons, and then interacts with the co-initiator through transfer of electrons and protons, which produces an alkyl (or aryl) free radical R and a ketyl radical K; wherein the free radical R initiates the addition polymerization of monomers that are capable of free radical polymerization, whereas the radical K inhibits the chain propagation of the macromolecular free radicals to a certain degree due to the steric hindrance effect, and thus delays the gelation time of the photopolymerization, which helps to increase the phase separation between the polymer and the functional components. A holographic photopolymer material with high-diffraction efficiency can be obtained by employing this visible light photoinitiating system.
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公开(公告)号：US20170123374A1
公开(公告)日：2017-05-04
申请号：US15318547
申请日：2015-06-26
IPC分类号： G03H1/00 , G11B7/242 , G11B7/24044 , G03H1/02 , G03H1/04
CPC分类号： G03H1/0011 , G03F7/001 , G03F7/027 , G03F7/031 , G03H1/0005 , G03H1/02 , G03H1/0402 , G03H2001/0016 , G03H2001/0044 , G03H2001/0415 , G03H2240/22 , G03H2260/12 , G03H2260/30 , G03H2260/50 , G11B7/24044 , G11B7/242
摘要： A pressure sensitive holographic recording composition is described wherein the composition comprises diacetone acrylamide, glycerol and citric acid. The composition is capable of recording high diffraction efficiency reflection holograms.
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10.发明申请公开(公告)号：US20170110147A1
公开(公告)日：2017-04-20
申请号：US15390541
申请日：2016-12-26
发明人： Yeh-Wei YU , Ching-Cherng SUN
IPC分类号： G11B7/26 , G11B7/24062 , G11B7/24044 , B29D17/00 , G03H1/18
CPC分类号： G11B7/26 , B29D11/0074 , B29D17/005 , G03H1/18 , G03H1/30 , G03H2250/12 , G03H2250/42 , G03H2260/30 , G03H2270/54 , G11B7/0065 , G11B7/24044 , G11B7/24062 , G11B2007/240025
摘要： A holographic storage layer includes a reflective structure and photosensitive units. The reflective structure is a grid-shaped structure and includes cavities. The photosensitive units are disposed in the cavities, in which each of the photosensitive units is surrounded by the reflective structure. First openings and second openings are defined by the reflective structure, and the photosensitive units are exposed by the first openings and the second openings respectively.
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