The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2018
Filed:
May. 11, 2015
Carestream Dental Technology Topco Limited, London, GB;
Rongguang Liang, Tucson, AZ (US);
Victor C. Wong, Rochester, NY (US);
Michael A. Marcus, Honeoye Falls, NY (US);
Mark E. Bridges, Spencerport, NY (US);
Paul O. McLaughlin, Rochester, NY (US);
Peter D. Burns, Fairport, NY (US);
David L. Patton, Lebannon, PA (US);
Carestream Dental Technology Topco Limited, London, GB;
Abstract
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.