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公开(公告)号：US10921751B2
公开(公告)日：2021-02-16
申请号：US16058834
申请日：2018-08-08
发明人： Hyungseok Bang , Heejin Im , Guensik Lee , Friedrich-Karl Bruder , Thomas Peter Facke , Marc-Stephan Weiser , Rainer Hagen , Thomas Rolle , Horst Berneth , Dennis Honel , Günther Walze
摘要： The invention relates to a method for producing a holographic optical element by providing a recording stack comprising at least one recording element laminated on at least one supporting element, irradiating at least a part of the recording stack with at least one recording beam in an irradiating step, wherein during the irradiating step, the recording stack bends, providing a bending deviation threshold for the recording stack, and adjusting at least one first process parameter such that an expected maximum bending deviation of the recording stack does not exceed the bending deviation threshold, wherein the at least one first process parameter influences the bending behaviour of the recording stack during the irradiating step.
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公开(公告)号：US10082614B2
公开(公告)日：2018-09-25
申请号：US15379976
申请日：2016-12-15
发明人： Hyungseok Bang , Seungman Ryu , Joobong Hyun , Yongku Lee , Dongyeon Kim , Friedrich-Karl Bruder , Günther Walze
IPC分类号： F21V8/00 , G02F1/13 , G02F1/1335
摘要： The disclosure relates to a viewing angle switchable back light unit wherein a general mode and a privacy mode in a liquid crystal display can be selected. A thin film type back light unit includes a light guide film, a light radiator, a first light source, and a light collimator. The light guide film includes a light entering part at one side, a light guiding part extending from the one side to an opposite side of the one side, and a light radiating part on one plane surface. The light radiator is on the light radiating part. The first light source faces the light entering part. The light collimator is on the light entering part facing the first light source. The light collimator receives an expanding light from the first light source, converts the expanding light into collimated light, and provides the collimated light to the light entering part.
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公开(公告)号：US10670789B2
公开(公告)日：2020-06-02
申请号：US15775649
申请日：2016-11-18
摘要： A method for recording a plurality of scatter volume holograms in a photopolymeric recording medium, the method including at least the following steps providing a first laser light source, providing a photopolymeric recording medium including a substrate and a photoactive layer, wherein the photopolymeric recording medium has an index modulation Δn of at least 0.04 and a thickness d of the photoactive layer of at least 25 μm, and irradiating the photopolymeric recording medium with the first laser light beam generated by the first laser light source with a minimum irradiation energy dosage of 3*Di, Di being the inhibition dosage of the photoactive layer.
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公开(公告)号：US09921473B2
公开(公告)日：2018-03-20
申请号：US15306272
申请日：2015-03-24
发明人： Thomas Fäcke , Friedrich-Karl Bruder , Thomas Rölle , Marc-Stephan Weiser , Dennis Hönel , Horst Berneth , Günther Walze , Rainer Hagen
IPC分类号： G03H1/02 , G03F7/035 , G03F7/032 , G03F7/028 , C07C69/612 , G03F7/00 , C08F290/06 , G11B7/24044 , C07C69/017 , C07C69/54 , C07C271/16
CPC分类号： G03F7/001 , C07C69/017 , C07C69/54 , C07C69/612 , C07C271/16 , C08F290/062 , C08F290/067 , G03F7/028 , G03F7/035 , G03H1/0248 , G03H2001/0264 , G03H2260/12 , G11B7/24044 , C08F220/34 , C08F2220/346 , C08F222/22
摘要： The invention relates to a photopolymer formulation comprising specific aromatic glycol ethers as writing monomers, matrix polymers and a photoinitiator. The invention further provides an unexposed holographic medium obtainable using an inventive photopolymer formulation, and an exposed holographic medium obtainable by exposing a hologram into an inventive unexposed holographic medium. The invention likewise provides a visual display comprising an inventive exposed holographic medium, for the use of an inventive exposed holographic medium for production of chip cards, identification documents, 3D images, product protection labels, labels, banknotes or holographic optical elements, and specific aromatic glycol ethers.
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公开(公告)号：US10477197B2
公开(公告)日：2019-11-12
申请号：US15117475
申请日：2015-02-17
发明人： Friedrich-Karl Bruder , Rainer Hagen , Thomas Fäcke , Günther Walze , Eun Soo Kim , Yong Seok Hwang
摘要： An autostereoscopic 3D display device is disclosed. The device includes a first light source and a second light source configured to alternately generate light and a light guide panel arranged to guide the light from the first light source in a first direction as a first light beam and the light from the second light source in a second direction as a second light beam. In the device, a stack of a plurality of holographic optical elements is configured to converge the first light beam and the second light beam from the light guide panel. The stack of the plurality of holographic optical elements may include at least one first holographic optical element and at least one second holographic optical element.
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6.发明授权公开(公告)号：US10001703B2
公开(公告)日：2018-06-19
申请号：US15029080
申请日：2014-10-13
发明人： Horst Berneth , Thomas Rölle , Friedrich-Karl Bruder , Dennis Hönel , Marc-Stephan Weiser , Thomas Fäcke , Rainer Hagen , Günther Walze
IPC分类号： G03H1/02 , G03F7/028 , G03F7/029 , G03F7/035 , G03F7/00 , C07F5/02 , C07C211/63 , C07D213/20 , C07D233/58 , C07D295/037
CPC分类号： G03F7/001 , C07C211/63 , C07D213/20 , C07D233/58 , C07D295/037 , C07F5/027 , G03F7/029 , G03F7/035 , G03H1/0248 , G03H2001/0264 , G03H2260/12
摘要： The invention relates to a photopolymer formulation comprising a component reactive toward isocyanates, a polyisocyanate component, a writing monomer and a photoinitiator containing at least one dye and a coinitiator, characterized in that the coinitiator contains at least one substance of the formula (Ia) The invention further provides a process for preparing the specific coinitiators and the coinitiators obtainable by this process, and additionally a process for producing a holographic medium using the specific coinitiators, and a holographic medium obtainable using the inventive photopolymer formulation. The invention further relates to a laminate structure comprising an inventive holographic medium and likewise specific borates suitable as coinitiators.
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公开(公告)号：US10444420B2
公开(公告)日：2019-10-15
申请号：US15738694
申请日：2016-06-23
发明人： Rainer Hagen , Günther Walze , Thomas Fäcke , Friedrich-Karl Bruder , Dennis Hönel , Thomas Rölle , Horst Berneth , Marc-Stephan Weiser
摘要： The invention relates to an indirect lighting arrangement (2, 2.1, 2.2, 2.3, 2.4, 2.5) comprising at least one cylindrical waveguide (4). At least one end (12.1, 12.2) of the cylindrical waveguide (4) is designed to couple light from a first light source (1) into the cylindrical waveguide (4), and the lateral surface (10) of the cylindrical wave guide (4) has a coupling section (6) which is designed to optically couple the cylindrical waveguide (4) to an arrangeable plate-shaped waveguide (16). At least the coupling section (6) has at least one holographic optical element (8) which is designed to emit light from the cylindrical waveguide (4) into the arrangeable plate-shaped waveguide (16).
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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：US10915066B2
公开(公告)日：2021-02-09
申请号：US16064845
申请日：2016-12-19
摘要： The invention relates to an apparatus (200, 300, 400, 600) for producing volume reflection holograms with substrate-guided reconstruction beams, comprising: at least one transparent, planar carrier element (210, 310, 410, 610) comprising a first flat side (210.1) and a further flat side (210.2), at least one master element (206, 306, 406, 606) arrangeable at the first flat side (210.1) of the carrier element (210, 310, 410, 610) and at least one optical input coupling element (102, 202, 302, 402, 602) configured to optically couple a light beam (214, 216), wherein provision is made of at least one coupling portion (104, 204, 304, 404, 604) configured to mechanically establish an optical contact between the input coupling element (102, 202, 302, 402) and at least one holographic recording medium (208, 308, 408) providable on the further flat side (210.2) of the carrier element (210, 310, 410) or configured to mechanically establish an optical contact between the further flat side of the carrier element (610) and at least one holographic recording medium (608) providable on a flat side (605) of the optical input coupling element (602), wherein at least the coupling portion (104, 204, 304, 404, 604) is formed from a material with a shear modulus of between 1000 Pa and 50 MPa, preferably of between 30,000 Pa and 30 MPa.
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公开(公告)号：US10254465B2
公开(公告)日：2019-04-09
申请号：US14419772
申请日：2013-08-09
发明人： Thomas Fäcke , Friedrich-Karl Bruder , Rainer Hagen , Günther Walze , Thomas Roelle , Horst Berneth , Dennis Hönel , Marc-Stephan Weiser , Werner Hoheisel
IPC分类号： F21V8/00 , G02F1/1335 , G03H1/30 , G03H1/22
摘要： The invention relates to an illumination device for illuminating at least one light modulator system of a liquid crystal display, the device comprising at least one waveguide substrate for guiding at least one targeted light beam that can be coupled into the waveguide substrate. The waveguide substrate is at least in optical contact with at least one holographic optical decoupling substrate comprising a plurality of decoupling regions and a decoupling region is at least designed to decouple part of the targeted light beam in the form of a plurality of sub-beams in the direction of the light modulator system. At least one diffuser module is provided, said diffuser module being designed in such a way that at least the outermost sub-beams of two neighboring decoupling regions are at least adjacent to one another before exiting the diffuser module.
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