Patents by Inventor Guenther Walze
Guenther Walze has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11193646Abstract: A lighting device for vehicles, in particular a signal light, with a light source for emitting a light beam and an optical unit associated with the light source for producing a predetermined light function, the optical unit having a holographic element and a lens arranged in the main emission direction in front of the holographic element, the holographic element comprising such a diffraction structure that the light beam emitted from the light source onto the holographic element is varied according to a predetermined illumination pattern such that the holographic light beam lights an illumination surface of the lens to generate the light function.Type: GrantFiled: December 18, 2015Date of Patent: December 7, 2021Assignees: Hella KGaA Hueck & Co., Covestro Deutschland AGInventors: Martin Muegge, Carsten Hohmann, Rainer Hagen, Guenther Walze, Thomas Faecke
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Patent number: 10921751Abstract: 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.Type: GrantFiled: August 8, 2018Date of Patent: February 16, 2021Assignees: LG Display Co., Ltd., Covestro Deutschland AGInventors: 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
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Patent number: 10915066Abstract: 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.Type: GrantFiled: December 19, 2016Date of Patent: February 9, 2021Assignee: Covestro Deutschland AGInventors: Christian Rewitz, Rainer Hagen, Thomas Fäcke, Günther Walze, Friedrich-Karl Bruder
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Patent number: 10670789Abstract: 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 ?n of at least 0.04 and a thickness d of the photoactive layer of at least 25 ?m, 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.Type: GrantFiled: November 18, 2016Date of Patent: June 2, 2020Assignee: Covestro Deutschland AGInventors: Thomas Fäcke, Friedrich-Karl Bruder, Günther Walze, Andrey Putilin
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Patent number: 10477197Abstract: 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.Type: GrantFiled: February 17, 2015Date of Patent: November 12, 2019Inventors: Friedrich-Karl Bruder, Rainer Hagen, Thomas Fäcke, Günther Walze, Eun Soo Kim, Yong Seok Hwang
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Patent number: 10444420Abstract: 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).Type: GrantFiled: June 23, 2016Date of Patent: October 15, 2019Assignee: Covestro Deutschland AGInventors: Rainer Hagen, Günther Walze, Thomas Fäcke, Friedrich-Karl Bruder, Dennis Hönel, Thomas Rölle, Horst Berneth, Marc-Stephan Weiser
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Patent number: 10254465Abstract: 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.Type: GrantFiled: August 9, 2013Date of Patent: April 9, 2019Assignee: Covestro Deutschland AGInventors: Thomas Fäcke, Friedrich-Karl Bruder, Rainer Hagen, Günther Walze, Thomas Roelle, Horst Berneth, Dennis Hönel, Marc-Stephan Weiser, Werner Hoheisel
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Publication number: 20190011880Abstract: 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.Type: ApplicationFiled: December 19, 2016Publication date: January 10, 2019Inventors: Christian REWITZ, Rainer HAGEN, Thomas FÄCKE, Günther WALZE, Friedrich-Karl BRUDER
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Publication number: 20180348704Abstract: 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.Type: ApplicationFiled: August 8, 2018Publication date: December 6, 2018Inventors: 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
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Publication number: 20180329127Abstract: The invention relates to a method for recording a plurality of scatter volume holograms in a photopolymeric recording medium, the method comprising at least the following steps providing a first laser light source, providing a photopolymeric recording medium comprising a substrate and a photoactive layer, wherein the photopolymeric recording medium has an index modulation ?n of at least 0.Type: ApplicationFiled: November 18, 2016Publication date: November 15, 2018Inventors: Thomas FÄCKE, Friedrich-Karl BRUDER, Günther WALZE, Andrey PUTILIN
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Patent number: 10082614Abstract: 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.Type: GrantFiled: December 15, 2016Date of Patent: September 25, 2018Assignees: LG Display Co., Ltd., Covestro Deutschland AGInventors: Hyungseok Bang, Seungman Ryu, Joobong Hyun, Yongku Lee, Dongyeon Kim, Friedrich-Karl Bruder, Günther Walze
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Patent number: 10073416Abstract: 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 behavior of the recording stack during the irradiating step.Type: GrantFiled: April 24, 2015Date of Patent: September 11, 2018Assignees: LG Display Co., Ltd., Bayer MaterialScience AGInventors: 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
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Publication number: 20180188437Abstract: 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).Type: ApplicationFiled: June 23, 2016Publication date: July 5, 2018Inventors: RAINER HAGEN, Günther WALZE, Thomas FÄCKE, Friedrich-Karl BRUDER, Dennis HÖNEL, Thomas RöLLE, Horst BERNETH, Marc-Stephan WEISER
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Patent number: 10001703Abstract: 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.Type: GrantFiled: October 13, 2014Date of Patent: June 19, 2018Assignee: Covestro Deutschland AGInventors: Horst Berneth, Thomas Rölle, Friedrich-Karl Bruder, Dennis Hönel, Marc-Stephan Weiser, Thomas Fäcke, Rainer Hagen, Günther Walze
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Patent number: 9921473Abstract: 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.Type: GrantFiled: March 24, 2015Date of Patent: March 20, 2018Assignee: Covestro Deutschland AGInventors: Thomas Fäcke, Friedrich-Karl Bruder, Thomas Rölle, Marc-Stephan Weiser, Dennis Hönel, Horst Berneth, Günther Walze, Rainer Hagen
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Patent number: 9910208Abstract: The present disclosure relates to a thin film type controlled viewing window back light unit and a thin flat type Controlled Viewing window Display using the same. The present disclosure suggests a thin film type back light unit which can include: a base film having a width and a length, and including a high refractive film and a low refractive film stacked on the high refractive film; an incident pattern disposed at one side of a bottom surface of the base film; a reflective pattern disposed at an opposite side apart from the one side with the length of the bottom surface of the base film, and covering the width of the opposite side; a light radiating pattern disposed on an upper surface of the base film; a holographic film for controlling a viewing-window disposed on the light radiating pattern; and a light source being apart from the incident pattern, and providing an incident light to the incident pattern.Type: GrantFiled: June 1, 2015Date of Patent: March 6, 2018Assignees: LG DISPLAY CO., LTD., COVESTRO DEUTSCHLAND AGInventors: Hyungseok Bang, Seungman Ryu, Friedrich-Karl Bruder, Thomas Peter Fäcke, Rainer Hagen, Günther Walze
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Publication number: 20170327033Abstract: A lighting device for vehicles, in particular a signal light, with a light source for emitting a light beam and an optical unit associated with the light source for producing a predetermined light function, the optical unit having a holographic element and a lens arranged in the main emission direction in front of the holographic element, the holographic element comprising such a diffraction structure that the light beam emitted from the light source onto the holographic element is varied according to a predetermined illumination pattern such that the holographic light beam lights an illumination surface of the lens to generate the light function.Type: ApplicationFiled: December 18, 2015Publication date: November 16, 2017Inventors: Martin Muegge, Carsten Hohmann, Rainer Hagen, Guenther Walze, Thomas Faecke
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Patent number: 9804490Abstract: 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, R3Type: GrantFiled: December 16, 2014Date of Patent: October 31, 2017Assignee: Covestro Deutschland AGInventors: Thomas Rölle, Horst Berneth, Friedrich-Karl Bruder, Dennis Hönel, Thomas Fäcke, Günther Walze, Rainer Hagen, Christian Diedrich
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Publication number: 20170212420Abstract: The invention relates to layered setup comprising a substrate layer and a photopolymer layer bonded thereto at least segmentally, wherein the substrate layer has an average retardation of ?60 nm.Type: ApplicationFiled: July 31, 2015Publication date: July 27, 2017Inventors: THOMAS FÄECKE, Friedrich-Karl BRUDER, Dennis HÕNEL, Günther WALZE, Thoms RÖLLE
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Publication number: 20170192150Abstract: 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.Type: ApplicationFiled: December 15, 2016Publication date: July 6, 2017Applicants: LG Display Co., Ltd., COVESTRO DEUTSCHLAND AGInventors: Hyungseok BANG, Seungman RYU, Joobong HYUN, Yongku LEE, Dongyeon KIM, Friedrich-Karl BRUDER, Günther WALZE