Patents by Inventor Charles S. Koehler
Charles S. Koehler 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: 8821035Abstract: A method for transmitting a signal in an optical system includes generating an optical signal along an optical axis for transmission through an optical element, positioning the optical element so that a surface discontinuity is positioned along the optical axis such that the optical signal defines a substantially radially symmetric intensity profile, and launching the optical signal into an input face of an optical fiber such that the intensity profile is substantially null proximate an optical axis associated with the optical fiber.Type: GrantFiled: September 5, 2013Date of Patent: September 2, 2014Assignee: Flir Systems, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. TeKolste
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Publication number: 20140112619Abstract: A method for transmitting a signal in an optical system includes generating an optical signal along an optical axis for transmission through an optical element, positioning the optical element so that a surface discontinuity is positioned along the optical axis such that the optical signal defines a substantially radially symmetric intensity profile, and launching the optical signal into an input face of an optical fiber such that the intensity profile is substantially null proximate an optical axis associated with the optical fiber.Type: ApplicationFiled: September 5, 2013Publication date: April 24, 2014Applicant: FLIR SYSTEMS, INC.Inventors: Alan D. KATHMAN, Charles S. KOEHLER, William H. WELCH, Eric G. JOHNSON, Robert D. TeKOLSTE
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Patent number: 8529139Abstract: A method for transmitting a signal in an optical system includes generating an optical signal along an optical axis for transmission through an optical element, positioning the optical element so that a surface discontinuity is positioned along the optical axis such that the optical signal defines a substantially radially symmetric intensity profile, and launching the optical signal into an input face of an optical fiber such that the intensity profile is substantially null proximate an optical axis associated with the optical fiber.Type: GrantFiled: August 2, 2010Date of Patent: September 10, 2013Assignee: DigitalOptics Corporation EastInventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. TeKolste
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Publication number: 20120076456Abstract: A method for transmitting a signal in an optical system includes generating an optical signal along an optical axis for transmission through an optical element, positioning the optical element so that a surface discontinuity is positioned along the optical axis such that the optical signal defines a substantially radially symmetric intensity profile, and launching the optical signal into an input face of an optical fiber such that the intensity profile is substantially null proximate an optical axis associated with the optical fiber.Type: ApplicationFiled: August 2, 2010Publication date: March 29, 2012Applicant: DigitalOptics Corporation EastInventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. TeKolste
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Patent number: 7769258Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: GrantFiled: May 4, 2009Date of Patent: August 3, 2010Assignee: Tessera North America, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Publication number: 20090226134Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: ApplicationFiled: May 4, 2009Publication date: September 10, 2009Applicant: DIGITAL OPTICS CORPORATION (TESSERA NORTH AMERICA, INC.)Inventors: Alan D. KATHMAN, Charles S. KOEHLER, William H. WELCH, Eric G. JOHNSON, Robert D. TEKOLSTE
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Patent number: 7529446Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: GrantFiled: March 10, 2008Date of Patent: May 5, 2009Assignee: Tessera North America, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Publication number: 20080159695Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: ApplicationFiled: March 10, 2008Publication date: July 3, 2008Applicant: DIGITAL OPTICS CORPORATION (now TESSERA NORTH AMERICA, INC.)Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Patent number: 7343069Abstract: An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.Type: GrantFiled: May 18, 2007Date of Patent: March 11, 2008Assignee: Tessera North America, Inc.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Patent number: 7266270Abstract: A waveguide to waveguide monitor includes an optics block between the two waveguides. The optics block couples light between the two waveguides and includes at least two parallel surfaces. The monitor also has an optical tap which creates a monitor beam. The optics block may be flush with the endfaces of the waveguides, even if the endfaces are angled. At least two optical elements needed to couple the light between the two optical waveguides and direct the monitor beam on a detector are on the at least two parallel surfaces of the optics block and any surfaces secured thereto.Type: GrantFiled: June 28, 2002Date of Patent: September 4, 2007Assignee: Tessera North AmericaInventors: James E. Morris, Alan D. Kathman, Hongtao Han, Michael R. Feldman, Charles S. Koehler
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Patent number: 7221823Abstract: An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may include a mode matching element and/or an angular distribution altering element. The apparatus may be reciprocal. The reciprocal apparatus may prevent light traversing the apparatus again having a change in phase of light from substantially overlapping an original object in an input plane.Type: GrantFiled: December 17, 2002Date of Patent: May 22, 2007Assignee: Digital Optics CorporationInventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Publication number: 20030174959Abstract: A waveguide to waveguide monitor includes an optics block between the two waveguides. The optics block couples light between the two waveguides and includes at least two parallel surfaces. The monitor also has an optical tap which creates a monitor beam. The optics block may be flush with the endfaces of the waveguides, even if the endfaces are angled. At least two optical elements needed to couple the light between the two optical waveguides and direct the monitor beam on a detector are on the at least two parallel surfaces of the optics block and any surfaces secured thereto.Type: ApplicationFiled: June 28, 2002Publication date: September 18, 2003Inventors: James E. Morris, Alan D. Kathman, Hongtao Han, Michael R. Feldman, Charles S. Koehler
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Publication number: 20030072526Abstract: An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may include a mode matching element and/or an angular distribution altering element. The apparatus may be reciprocal.Type: ApplicationFiled: December 17, 2002Publication date: April 17, 2003Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste
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Patent number: 6496621Abstract: An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may include a mode matching element and/or an angular distribution altering element. The apparatus may be reciprocal. The reciprocal apparatus may prevent light traversing the apparatus again having a change in phase of light from substantially overlapping an original object in an input plane.Type: GrantFiled: July 11, 2000Date of Patent: December 17, 2002Assignee: Digital Optics Corp.Inventors: Alan D. Kathman, Charles S. Koehler, William H. Welch, Eric G. Johnson, Robert D. Tekolste