Patents by Inventor Gavin R. G. Erry
Gavin R. G. Erry 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: 8009280Abstract: A system, for determining characteristics of a beam wavefront and reshaping such wavefront, including: apparatus for sampling the wavefront curvature and generating outputs; apparatus for reshaping the wavefront; and apparatus for receiving the outputs, proportioning the outputs to match the inputs need to drive controls for the reshaping apparatus, and sending the proportioned outputs to the reshaping apparatus. The reshaping apparatus is, preferably, a deformable mirror. The sampling apparatus includes a distorted grating. The method includes: positioning the sampling apparatus in the bean path; positioning a reshaping apparatus in the beam path; sampling the curvature of the wavefront and generating outputs representative of the curvature thereof; sending the generated outputs to the proportioning apparatus; proportioning the outputs to match the inputs needed to drive the controls of the reshaping apparatus; and sending the proportioned outputs to the reshaping apparatus to change the shape thereof.Type: GrantFiled: July 3, 2008Date of Patent: August 30, 2011Inventors: Gavin R. G. Erry, Paul Harrison, Boyd Hunter, Eugene W. Butler
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Patent number: 7712900Abstract: Apparatus for determining whether cornea (vitro or in vivo) has been modified (surgically or otherwise). The method includes the steps of: passing a beam of collimated light through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications. The method includes the steps of providing an optical system that has a pupil plane and an image plane at a detector; positioning the cornea in the pupil plane; passing a collimated beam of light through the cornea to produce at least two images in the image plane; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification.Type: GrantFiled: July 3, 2007Date of Patent: May 11, 2010Inventors: Leonard John Otten, Gavin R. G. Erry, Simon C. Woods, Paul Harrison
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Patent number: 7538872Abstract: Determining relationships between one laser beam and an object onto which such beam is directed including: directing such beam onto the object; collecting radiation from the beam that is reflected back; spectrally discriminating the collected, reflected radiation from other collected radiation; generating an image of the collected beam radiation; and analyzing this image to determine the value of at least one parameter selected from: the diameter of the beam on the object; the position of the beam on the object; and beam quality on the object. The determined value(s) may be used to adjust parameter(s) of the beam. Additional steps include directing a second beam onto the object and collecting, spectrally discriminating, generating an image and analyzing it to determine the value of at least one parameter related to the second beam. The forgoing may also include utilizing the determined second value to adjust parameter(s) of the second beam.Type: GrantFiled: August 2, 2006Date of Patent: May 26, 2009Inventors: Eugene W. Butler, L. John Otten, III, Gavin R. G. Erry
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Patent number: 7535647Abstract: Optical instruments having, inter alia, optics to process wavelengths of electromagnetic radiation to produce an interferogram. The instruments include an optical path and optical elements positioned along this path for splitting and recombining the wavelengths which interfere with each other to produce a plurality of different fringes of different wavelengths. The optics include matched gratings which are positioned along the optical path outside of the interferometer optics to produce first and second sets of spectrally dispersed beams. The interferometer optics includes a beam splitter and first and second mirrors. In two embodiments the beam splitter has an internal surface including three zones. The instruments can all include a detector for detecting the interferogram and means for processing the detected interferogram to produce spectral information that is spatially distributed.Type: GrantFiled: May 11, 2007Date of Patent: May 19, 2009Inventors: Leonard John Otten, III, Gavin R. G. Erry
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Patent number: 7104649Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.Type: GrantFiled: April 2, 2002Date of Patent: September 12, 2006Assignee: Kestrel CorporationInventors: Leonard John Otten, III, Gavin R. G. Erry, Simon C. Woods, Paul Harrison
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Patent number: 6578964Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.Type: GrantFiled: June 24, 2002Date of Patent: June 17, 2003Assignee: Kestrel CorporationInventors: Leonard John Otten, III, Gavin R. G. Erry, Simon C. Woods, Paul Harrison
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Publication number: 20030011744Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.Type: ApplicationFiled: June 24, 2002Publication date: January 16, 2003Applicant: Kestrel CorporationInventors: Leonard John Otten, Gavin R. G. Erry, Simon C. Woods, Paul Harrison
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Publication number: 20020151801Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.Type: ApplicationFiled: April 2, 2002Publication date: October 17, 2002Applicant: Kestrel CorporationInventors: Leonard John Otten, Gavin R. G. Erry, Simon C. Woods, Paul Harrison
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Patent number: 6464357Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.Type: GrantFiled: June 29, 2001Date of Patent: October 15, 2002Assignee: Kestrel CorporationInventors: Leonard John Otten, III, Gavin R. G. Erry, Simon C. Woods, Paul Harrison