Patents by Inventor Behzad Khodadad
Behzad Khodadad 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: 11927343Abstract: A variable angle beam control device is capable of maintaining the same color temperature of the light source regardless of the changes in the angle of the beam. The controllable light beam device has a light source with primary optics producing a low divergence light beam having an inverted angular distribution of the correlated color temperature (CCT), and a liquid crystal device with an electrically variable refractive index distribution arranged to receive said light beam and to provide a variable angle beam.Type: GrantFiled: September 30, 2020Date of Patent: March 12, 2024Inventors: Tigran Galstian, Armen Zohrabyan, Behzad Khodadad, Karen Asatryan
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Publication number: 20220349554Abstract: A variable angle beam control device is capable of maintaining the same color temperature of the light source regardless of the changes in the angle of the beam. The controllable light beam device has a light source with primary optics producing a low divergence light beam having an inverted angular distribution of the correlated color temperature (CCT), and a liquid crystal device with an electrically variable refractive index distribution arranged to receive said light beam and to provide a variable angle beam.Type: ApplicationFiled: September 30, 2019Publication date: November 3, 2022Inventors: Tigran GALSTIAN, Armen ZOHRABYAN, Behzad KHODADAD, Karen ASATRYAN
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Patent number: 9910246Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: GrantFiled: June 29, 2016Date of Patent: March 6, 2018Assignee: LENSVECTOR INC.Inventors: Armen Zohrabyan, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Aram Bagramyan, Amir Tork, Jeffrey James Parker, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang
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Publication number: 20160377830Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: ApplicationFiled: June 29, 2016Publication date: December 29, 2016Inventors: Armen Zohrabyan, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Aram Bagramyan, Amir Tork, Jeffrey James Parker, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang
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Patent number: 9405093Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: GrantFiled: April 7, 2015Date of Patent: August 2, 2016Assignee: LENSVECTOR INC.Inventors: Armen Zohrabyan, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Aram Bagramyan, Amir Tork, Jeffrey James Parker, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang
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Patent number: 9239479Abstract: A tunable liquid crystal optical device is described. The optical device has an electrode arrangement associated with a liquid crystal cell and includes a hole patterned electrode, wherein control of the liquid crystal cell depends on electrical characteristics of liquid crystal optical device layers. The optical device further has a circuit for measuring said electrical characteristics of the liquid crystal optical device layers, and a drive signal circuit having at least one parameter adjusted as a function of the measured electrical characteristics. The drive signal circuit generates a control signal for the electrode arrangement.Type: GrantFiled: September 21, 2011Date of Patent: January 19, 2016Assignee: LENSVECTOR INC.Inventors: Behzad Khodadad, Michael J. Nystrom, Bahram Afshari, Karen Asatryan, Tigran Galstian
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Publication number: 20150301307Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: ApplicationFiled: April 7, 2015Publication date: October 22, 2015Applicant: LENSVECTOR INC.Inventors: Armen ZOHRABYAN, Tigran GALSTIAN, Karen ASATRYAN, Vladimir PRESNIAKOV, Marco THIBOUTOT, Aram BAGRAMYAN, Amir TORK, Jeffrey James PARKER, Ted COOPER, Behzad KHODADAD, Gongjian HU, Chong I CHEANG
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Patent number: 9030595Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: GrantFiled: October 14, 2011Date of Patent: May 12, 2015Assignee: Lensvector Inc.Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Armen Zohrabyan, Aram Bagramyan, Amir Tork, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang, Jeffrey James Parker
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Publication number: 20140049682Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: ApplicationFiled: October 14, 2011Publication date: February 20, 2014Applicant: LENSVECTOR INC.Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Armen Zohrabyan, Aram Bagramyan, Amir Tork, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang, Jeffrey James Parker
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Publication number: 20130250197Abstract: A tunable liquid crystal optical device is described. The optical device has an electrode arrangement associated with a liquid crystal cell and includes a hole patterned electrode, wherein control of the liquid crystal cell depends on electrical characteristics of liquid crystal optical device layers. The optical device further has a circuit for measuring said electrical characteristics of the liquid crystal optical device layers, and a drive signal circuit having at least one parameter adjusted as a function of the measured electrical characteristics. The drive signal circuit generates a control signal for the electrode arrangement.Type: ApplicationFiled: September 21, 2011Publication date: September 26, 2013Applicant: LENSVECTOR INC.Inventors: Behzad Khodadad, Michael J. Nystrom, Bahram Afshari, Karen Asatryan, Tigran Galstian