Patents by Inventor Cameron M. Lee
Cameron M. Lee 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: 11252385Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: GrantFiled: January 4, 2018Date of Patent: February 15, 2022Assignee: University of WashingtonInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Publication number: 20180199015Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: ApplicationFiled: January 4, 2018Publication date: July 12, 2018Inventors: Charles D. MELVILLE, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Patent number: 9901256Abstract: Methods and systems for detecting early stage dental caries and decays are provided. In particular, in an embodiment, laser-induced autofluorescence (AF) from multiple excitation wavelengths is obtained and analyzed. Endogenous fluorophores residing in the enamel naturally fluoresce when illuminated by wavelengths ranging from ultraviolet into the visible spectrum. The relative intensities of the AF emission changes between different excitation wavelengths when the enamel changes from healthy to demineralized. By taking a ratio of AF emission spectra integrals between different excitation wavelengths, a standard is created wherein changes in AF ratios within a tooth are quantified and serve as indicators of early stage enamel demineralization. The techniques described herein may be used in conjunction with a scanning fiber endoscope (SFE) to provide a reliable, safe and low-cost means for identifying dental caries or decays.Type: GrantFiled: January 18, 2013Date of Patent: February 27, 2018Assignee: UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATIONInventors: Eric J. Seibel, Liang Zhang, Richard S. Johnston, Charles D. Melville, Leonard Nelson, Cameron M. Lee, Joel Berg
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Patent number: 9894329Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: GrantFiled: September 23, 2015Date of Patent: February 13, 2018Assignee: University of WashingtonInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Publication number: 20160014383Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: ApplicationFiled: September 23, 2015Publication date: January 14, 2016Inventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Patent number: 9182655Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: GrantFiled: May 12, 2014Date of Patent: November 10, 2015Assignee: University of WashingtonInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Publication number: 20150281630Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: ApplicationFiled: May 12, 2014Publication date: October 1, 2015Applicant: University of WashingtonInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Publication number: 20150010878Abstract: Methods and systems for detecting early stage dental caries and decays are provided. In particular, in an embodiment, laser-induced autofluorescence (AF) from multiple excitation wavelengths is obtained and analyzed. Endogenous fluorophores residing in the enamel naturally fluoresce when illuminated by wavelengths ranging from ultraviolet into the visible spectrum. The relative intensities of the AF emission changes between different excitation wavelengths when the enamel changes from healthy to demineralized. By taking a ratio of AF emission spectra integrals between different excitation wavelengths, a standard is created wherein changes in AF ratios within a tooth are quantified and serve as indicators of early stage enamel demineralization. The techniques described herein may be used in conjunction with a scanning fiber endoscope (SFE) to provide a reliable, safe and low-cost means for identifying dental caries or decays.Type: ApplicationFiled: January 18, 2013Publication date: January 8, 2015Inventors: Eric J. Seibel, Liang Zhang, Richard S. Johnston, Charles D. Melville, Leonard Nelson, Cameron M. Lee, Joel Berg
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Patent number: 8757812Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: GrantFiled: May 19, 2009Date of Patent: June 24, 2014Assignee: University of Washington UW TechTransfer—Invention LicensingInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Patent number: 8411922Abstract: Methods and apparatus for reducing noise in images acquired with a scanning beam device are disclosed. A representative method may include scanning a beam of light over a surface in a scan with a variable velocity. Light backscattered from the surface may be detected at different points in time during the scan at a substantially constant rate. Reduced-noise representations of groups of the detected light that each correspond to a different position in an image of the surface may be generated. The reduced-noise representations may be generated for groups having multiple different sizes. The image of the surface may be generated by representing the different positions in the image with the reduced-noise representations of the corresponding groups. Other methods and apparatus are disclosed.Type: GrantFiled: November 30, 2007Date of Patent: April 2, 2013Assignee: University of WashingtonInventors: Cameron M. Lee, Richard S. Johnston
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Publication number: 20090316116Abstract: Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.Type: ApplicationFiled: May 19, 2009Publication date: December 24, 2009Applicant: University of Washington UW TechTransfer - Invention LicensingInventors: Charles D. Melville, Richard S. Johnston, Cameron M. Lee, Eric J. Seibel, Brian T. Schowengerdt
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Publication number: 20090141997Abstract: Methods and apparatus for reducing noise in images acquired with a scanning beam device are disclosed. A representative method may include scanning a beam of light over a surface in a scan with a variable velocity. Light backscattered from the surface may be detected at different points in time during the scan at a substantially constant rate. Reduced-noise representations of groups of the detected light that each correspond to a different position in an image of the surface may be generated. The reduced-noise representations may be generated for groups having multiple different sizes. The image of the surface may be generated by representing the different positions in the image with the reduced-noise representations of the corresponding groups. Other methods and apparatus are disclosed.Type: ApplicationFiled: November 30, 2007Publication date: June 4, 2009Inventors: Cameron M. Lee, Richard S. Johnston
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Patent number: 7252236Abstract: The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.Type: GrantFiled: December 19, 2006Date of Patent: August 7, 2007Assignee: University of WashingtonInventors: Richard S. Johnston, Charles D. Melville, Cameron M. Lee
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Patent number: 7159782Abstract: The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.Type: GrantFiled: December 23, 2004Date of Patent: January 9, 2007Assignee: University of WashingtonInventors: Richard S. Johnston, Charles D. Melville, Cameron M. Lee