Patents by Inventor Volodymyr Bodnar
Volodymyr Bodnar 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: 10310349Abstract: A non-polarizer based variable light attenuating device includes a guest-host solution having a liquid crystal host and a guest dichroic dye disposed between first and second conducting layers provided on first and second transparent substrates. The guest-host solution has a low-haze while the guest dye orientation alters between a low light transmitting orientation and a high light transmitting orientation in response to a first voltage supplied to the first and second conducting layers. In response to a second voltage supplied to the first and second conducting layers, the guest-host solution changes to a focal conic light scattering orientation to achieve a high-haze translucent state.Type: GrantFiled: July 21, 2015Date of Patent: June 4, 2019Assignee: ALPHAMICRON INCORPORATEDInventors: Bahman Taheri, Tamas Kosa, Christine Baker, Volodymyr Bodnar
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Patent number: 9513524Abstract: We describe a wide band variable transmission optical device having an electronically active cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm, has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.Type: GrantFiled: September 14, 2015Date of Patent: December 6, 2016Assignee: ALPHAMICRON INCORPORATEDInventors: Pedro Coutino Soto, Tim Smith, Roy E. Miller, Ludmila Sukhomlinova, Volodymyr Bodnar, Christine Baker, Tamas Kosa, Bahman Taheri
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Publication number: 20160070132Abstract: We describe a wide band variable transmission optical device having an electronically active cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm, has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.Type: ApplicationFiled: September 14, 2015Publication date: March 10, 2016Inventors: Pedro Coutino Soto, Tim Smith, Roy E. Miller, Ludmila Sukhomlinova, Volodymyr Bodnar, Christine Baker, Tamas Kosa, Bahman Taheri
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Publication number: 20150323825Abstract: A non-polarizer based variable light attenuating device includes a guest-host solution having a liquid crystal host and a guest dichroic dye disposed between first and second conducting layers provided on first and second transparent substrates. The guest-host solution has a low-haze while the guest dye orientation alters between a low light transmitting orientation and a high light transmitting orientation in response to a first voltage supplied to the first and second conducting layers. In response to a second voltage supplied to the first and second conducting layers, the guest-host solution changes to a focal conic light scattering orientation to achieve a high-haze translucent state.Type: ApplicationFiled: July 21, 2015Publication date: November 12, 2015Inventors: Bahman Taheri, Tamas Kosa, Christine Baker, Volodymyr Bodnar
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Patent number: 9134551Abstract: We describe a wide band variable transmission optical device, mixtures for use in such a device, and methods of making the same. The wide band optical device includes a cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The optical device does not use polarizers. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation perpendicular thereto and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm and has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.Type: GrantFiled: October 4, 2011Date of Patent: September 15, 2015Assignee: ALPHAMICRON INCORPORATEDInventors: Ludmila Sukhomlinova, Volodymyr Bodnar, Christine Martincic, Linli Su, Bahman Taheri, Tamas Kosa
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Patent number: 9130097Abstract: A solar powered variable light attenuating device includes a liquid crystal cell, a photovoltaic cell in electrical communication with the liquid crystal cell, and a light concentrator having a light absorbing surface and a light emitting surface optically coupled to the photovoltaic cell. At least a portion of light impinging on the light absorbing surface of the light concentrator is concentrated and directed through the light emitting surface to a photon-absorbing portion of the photovoltaic cell to generate a voltage. The generated voltage is used to change the liquid crystal cell from a de-energized state to an energized state in response to sunlight directed toward the photovoltaic cell.Type: GrantFiled: April 26, 2010Date of Patent: September 8, 2015Assignee: ALPHAMICRON INCORPORATEDInventors: Bahman Taheri, Tamas Kosa, Christine Martincic, Volodymyr Bodnar
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Publication number: 20130258266Abstract: We describe a wide band variable transmission optical device, mixtures for use in such a device, and methods of making the same. The wide band optical device includes a cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The optical device does not use polarizers. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation perpendicular thereto and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175nm within a visible wavelength range of 400-700nm and has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.Type: ApplicationFiled: October 4, 2011Publication date: October 3, 2013Applicant: ALPHAMICRON INCORPORATEDInventors: Ludmila Sukhomlinova, Volodymyr Bodnar, Christine Martincic, Linli Su, Bahman Taheri, Tamas Kosa
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Publication number: 20120038841Abstract: A solar powered variable light attenuating device includes a liquid crystal cell, a photovoltaic cell in electrical communication with the liquid crystal cell, and a light concentrator having a light absorbing surface and a light emitting surface optically coupled to the photovoltaic cell. At least a portion of light impinging on the light absorbing surface of the light concentrator is concentrated and directed through the light emitting surface to a photon-absorbing portion of the photovoltaic cell to generate a voltage. The generated voltage is used to change the liquid crystal cell from a de-energized state to an energized state in response to sunlight directed toward the photovoltaic cell.Type: ApplicationFiled: April 26, 2010Publication date: February 16, 2012Applicant: ALPHAMICRON, INC.Inventors: Bahman Taheri, Tamas Kosa, Christine Martincic, Volodymyr Bodnar
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Patent number: 7811482Abstract: A method of constructing a curved optical device includes assembling of at least one cell having opposed flexible substrates with a controlled distance therebetween to form a gap adapted to receive a fluid. The process continues by holding only a portion of the cell in a fixture, positioning a curved mold surface proximal the cell and heating at least one of the curved mold surface and cell. Next, the cell is conformed to the mold surface so that the cell substantially retains the curved shape when the heat and the mold surface are removed.Type: GrantFiled: April 18, 2007Date of Patent: October 12, 2010Assignee: AlphaMicron, Inc.Inventors: Roy Miller, Volodymyr Bodnar, Bahman Taheri
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Publication number: 20070209393Abstract: A method of constructing a curved optical device includes assembling of at least one cell having opposed flexible substrates with a controlled distance therebetween to form a gap adapted to receive a fluid. The process continues by holding only a portion of the cell in a fixture, positioning a curved mold surface proximal the cell and heating at least one of the curved mold surface and cell. Next, the cell is conformed to the mold surface so that the cell substantially retains the curved shape when the heat and the mold surface are removed.Type: ApplicationFiled: April 18, 2007Publication date: September 13, 2007Inventors: Roy Miller, Volodymyr Bodnar, Bahman Taheri