Patents by Inventor Paul O. McLaughlin
Paul O. McLaughlin 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: 10070791Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: GrantFiled: May 11, 2015Date of Patent: September 11, 2018Assignee: Carestream Dental Technology Topco LimitedInventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Publication number: 20150245770Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: ApplicationFiled: May 11, 2015Publication date: September 3, 2015Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Patent number: 9060690Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: GrantFiled: July 19, 2013Date of Patent: June 23, 2015Assignee: Carestream Health, Inc.Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Patent number: 8866894Abstract: A method for displaying live video of a tooth identifies a tooth tissue region in a viewable image frame obtained from a video stream and processes pixel data within the tooth tissue region to identify a suspected caries site. Intensity values for pixels that correspond to the suspected caries site are modified and a highlighted viewable image frame is formed as a combination of the modified intensity values corresponding to the suspected caries site and other pixel values in the viewable image frame. The highlighted viewable image frame is displayed in video form.Type: GrantFiled: January 22, 2008Date of Patent: October 21, 2014Assignee: Carestream Health, Inc.Inventors: Victor C. Wong, Gary M. Spinelli, Peter D. Burns, Paul O. McLaughlin, Jean Marc Inglese
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Patent number: 8605974Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: GrantFiled: June 1, 2012Date of Patent: December 10, 2013Assignee: Carestream Health, Inc.Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Publication number: 20130302746Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: ApplicationFiled: July 19, 2013Publication date: November 14, 2013Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Publication number: 20120237890Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.Type: ApplicationFiled: June 1, 2012Publication date: September 20, 2012Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Patent number: 8270689Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image (122) from the tooth and a second spectral range for exciting a fluorescence image (120) from the tooth. A polarizing beamsplitter (18) in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the second polarization state is orthogonal to the first polarization state. A first lens (22) in the return path directs image-bearing light from the tooth toward the sensor (68), and obtains image data from the portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range.Type: GrantFiled: September 12, 2006Date of Patent: September 18, 2012Assignee: Carestream Health, Inc.Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O. McLaughlin, Peter D. Burns, David L. Patton
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Patent number: 8077949Abstract: An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image.Type: GrantFiled: March 15, 2010Date of Patent: December 13, 2011Assignee: Carestream Health, Inc.Inventors: Rongguang Liang, Victor C. Wong, Mark E. Bridges, Michael A. Marcus, David L. Patton, Peter D. Burns, Paul O. McLaughlin
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Patent number: 7844091Abstract: A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. The first and second enhanced images are then analyzed to select and display the best-contrast image. This method provides high contrast images for carious regions (58) on all tooth surfaces.Type: GrantFiled: July 9, 2009Date of Patent: November 30, 2010Assignee: Carestream Health, Inc.Inventors: Victor C. Wong, Rongguang Liang, Michael A. Marcus, Paul O. McLaughlin, David L. Patton
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Publication number: 20100165089Abstract: An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image.Type: ApplicationFiled: March 15, 2010Publication date: July 1, 2010Inventors: Rongguang Liang, Victor C. Wong, Mark E. Bridges, Michael A. Marcus, David L. Patton, Peter D. Burns, Paul O. McLaughlin
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Patent number: 7702139Abstract: An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image.Type: GrantFiled: October 13, 2006Date of Patent: April 20, 2010Assignee: Carestream Health, Inc.Inventors: Rongguang Liang, Victor C. Wong, Mark E. Bridges, Michael A. Marcus, David L. Patton, Peter D. Burns, Paul O. McLaughlin
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Publication number: 20090274998Abstract: A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. The first and second enhanced images are then analyzed to select and display the best-contrast image. This method provides high contrast images for carious regions (58) on all tooth surfaces.Type: ApplicationFiled: July 9, 2009Publication date: November 5, 2009Inventors: Victor C. Wong, Rongguang Liang, Michael A. Marcus, Paul O. McLaughlin, David L. Patton
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Patent number: 7577284Abstract: A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. The first and second enhanced images are then analyzed to select and display the best-contrast image. This method provides high contrast images for carious regions (58) on all tooth surfaces.Type: GrantFiled: April 21, 2006Date of Patent: August 18, 2009Assignee: Carestream Health, Inc.Inventors: Victor C. Wong, Rongguang Liang, Michael A. Marcus, Paul O. McLaughlin, David L. Patton
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Publication number: 20090185712Abstract: A method for displaying live video of a tooth identifies a tooth tissue region in a viewable image frame obtained from a video stream and processes pixel data within the tooth tissue region to identify a suspected caries site. Intensity values for pixels that correspond to the suspected caries site are modified and a highlighted viewable image frame is formed as a combination of the modified intensity values corresponding to the suspected caries site and other pixel values in the viewable image frame. The highlighted viewable image frame is displayed in video form.Type: ApplicationFiled: January 22, 2008Publication date: July 23, 2009Inventors: Victor C. Wong, Gary M. Spinelli, Peter D. Burns, Paul O. McLaughlin, Jean Marc Inglese
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Patent number: 7460248Abstract: A tissue imaging system (200) for examining the medical condition of tissue (290) has an illumination optical system (205), which comprises a light source (220), having one or more light emitters, beam shaping optics, and polarizing optics. An optical beamsplitter (260) directs illumination light to an imaging sub-system, containing a spatial light modulator array (300). An objective lens (325) images illumination light from the spatial light modulator array to the tissue. An optical detection system (210) images the spatial light modulator to an optical detector array. A controller (360) drives the spatial light modulator to provide time variable arrangements of on-state pixels. The objective lens operates in a nominally telecentric manner relative to both the spatial light modulator and the tissue. The polarizing optics are independently and iteratively rotated to define variable polarization states relative to the tissue.Type: GrantFiled: May 15, 2006Date of Patent: December 2, 2008Assignee: Carestream Health, Inc.Inventors: Andrew F. Kurtz, Joseph R. Bietry, Paul O. McLaughlin
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Publication number: 20080118886Abstract: An apparatus (10) for obtaining an image of a tooth (20) includes an image sensor and a white light source (12) providing broadband polychromatic light and an ultraviolet light source providing narrow-band light. A combiner (15) directs broadband polychromatic light and narrow band light along a common illumination path to illuminate the tooth. A polarization beamsplitter (18) directs polarized light from the illumination path along an optical axis (216). An optical coherence tomography (OCT) imaging apparatus (70) splits the low coherence light into a sample path and a reference path and a dichroic element (78) directs the polarized illumination and the sample path low coherence light along the optical axis. An image processor (100) identifies a region of interest according to either a white light image (124), a fluorescent light image (120), or both and the OCT imaging apparatus obtains an OCT image over the region of interest.Type: ApplicationFiled: November 21, 2006Publication date: May 22, 2008Inventors: Rongguang Liang, Michael A. Marcus, David L. Patton, Laurie L. Voci, Victor C. Wong, Paul O. McLaughlin, Mark E. Bridges
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Publication number: 20080090198Abstract: An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image.Type: ApplicationFiled: October 13, 2006Publication date: April 17, 2008Inventors: Rongguang Liang, Victor C. Wong, Mark E. Bridges, Michael A. Marcus, David L. Patton, Peter D. Burns, Paul O. McLaughlin
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Publication number: 20080062429Abstract: A method for obtaining an image of a tooth obtains an area image of the tooth (20) surface and identifies a region of interest from the area image by positioning a marker (146) on the area image. The marker (146) corresponds to at least a portion of the region of interest and identifies a scanning area. An optical coherence tomography (OCT) image is then obtained over the scanning area.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Inventors: Rongguang Liang, Michael A. Marcus, Peter D. Burns, Victor C. Wong, Paul O. McLaughlin, Mark E. Bridges, David L. Patton
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Publication number: 20080063998Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image (122) from the tooth and a second spectral range for exciting a fluorescence image (120) from the tooth. A polarizing beamsplitter (18) in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the second polarization state is orthogonal to the first polarization state. A first lens (22) in the return path directs image-bearing light from the tooth toward the sensor (68), and obtains image data from the portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O, McLaughlin, Peter D. Burns, David L. Patton