Patents by Inventor Jihong Xie

Jihong Xie 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).

  • Publication number: 20190142577
    Abstract: A multifocal IOL (M-IOL) has a phase-altering characteristic that can control the diffraction and interference of light propagating there through to effect multifocality and extended depth of focus (EDOF). The embodied IOLs include engineered, discrete phase profiles on one or both of the anterior and posterior surfaces of the lens to intentionally manipulate the light in a designated manner. A design method for defining the discrete phase profile on the lens surface. The engineered phase profile is constructed by concentric annular zones having an abrupt step jump at the trailing circumferential edge of each zone. An optical modeling method to simulate the optical performance of the embodied IOLs in an optical ray tracing environment.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 16, 2019
    Applicant: Theramedice LLC
    Inventor: Jihong XIE
  • Patent number: 8167940
    Abstract: An aspheric toric intraocular lens (IOL) having toricity and asphericity in a single lens. The toricity and asphericity may be provided on separate surfaces, such as an anterior surface and a posterior surface, or the toricity and asphericity may be combined onto a single surface. The edge thickness may be varied sinusoidal to maintain equal edge thickness at 45 degree meridian.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: May 1, 2012
    Assignee: Novartis AG
    Inventors: Xin Hong, James Hoffman, Jihong Xie, Michael Hamlin
  • Patent number: 7944553
    Abstract: A method and system for measuring an optical property of a multi-focal lens are disclosed. One embodiment of the method comprises: filtering out light transmitted by all but one of a plurality of diffraction orders of the lens to provide an unfiltered light from a single diffraction order; receiving the unfiltered light at a wavefront detector; and analyzing the unfiltered light at the wavefront detector to measure the optical property. The multi-focal lens can be a multi-focal diffractive intra-ocular lens. The measured optical property can be a discontinuity in the lens surface. Filtering can comprise blocking all but the unfiltered light using an aperture operable to let through the unfiltered light from the single diffraction order, and/or blocking all but the unfiltered light using an opaque obstruction operable to let through only a selected amount of light corresponding to the light transmitted by the single diffraction order.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: May 17, 2011
    Assignee: Alcon, Inc.
    Inventors: Michael J. Simpson, Jihong Xie
  • Publication number: 20110022170
    Abstract: In one aspect, the present invention provides a method of designing a diffractive ophthalmic lens (e.g., an intraocular lens (IOL)) that includes providing an optic having an anterior refractive surface and a posterior refractive surface, wherein the optic provides a far-focus power (e.g., in a range of about 18 to about 26 Diopters (D)). A truncated diffractive structure can be disposed on at least one of the surfaces for generating a near-focus add power (e.g., in a range of about 3 D to about 4 D). And the diffractive structure can be adjusted so as to obtain a desired distribution of optical energy between the near and far foci for a range of pupil sizes.
    Type: Application
    Filed: July 30, 2010
    Publication date: January 27, 2011
    Inventors: Michael J. Simpson, Mutlu Karakelle, Stephen J. Van Noy, Xiaoxiao Zhang, Xin Hong, Jihong Xie
  • Patent number: 7659970
    Abstract: A method and system for measuring an optical property of a multi-focal lens are disclosed. One embodiment of the method comprises: filtering out light transmitted by all but one of a plurality of diffraction orders of the lens to provide an unfiltered light from a single diffraction order; receiving the unfiltered light at a wavefront detector; and analyzing the unfiltered light at the wavefront detector to measure the optical property. The multi-focal lens can be a multi-focal diffractive intra-ocular lens. The measured optical property can be a discontinuity in the lens surface. Filtering can comprise blocking all but the unfiltered light using an aperture operable to let through the unfiltered light from the single diffraction order, and/or blocking all but the unfiltered light using an opaque obstruction operable to let through only a selected amount of light corresponding to the light transmitted by the single diffraction order.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: February 9, 2010
    Assignee: Alcon, Inc.
    Inventors: Michael J. Simpson, Jihong Xie
  • Publication number: 20090279048
    Abstract: An aspheric toric intraocular lens (IOL) having toricity and asphericity in a single lens. The toricity and asphericity may be provided on separate surfaces, such as an anterior surface and a posterior surface, or the toricity and asphericity may be combined onto a single surface. The edge thickness may be varied sinusoidal to maintain equal edge thickness at 45 degree meridian.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 12, 2009
    Inventors: Xin Hong, James Hoffman, Jihong Xie, Michael Hamlin
  • Patent number: 7350916
    Abstract: In one aspect, the present invention provide an ophthalmic lens (e.g., an IOL) that includes an optic having an anterior optical surface and a posterior optical surface, where the optic provides an optical power in a range of about 16 D to about 25 D as measured in a medium having an index of refraction substantially similar to that of the eye's aqueous humor (e.g., about 1.336). At least one of the optical surfaces is characterized by an aspherical base profile such that the optic exhibits a negative spherical aberration in a range of about ?0.202 microns to about ?0.190 microns across the power range.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: April 1, 2008
    Assignee: Alcon, Inc.
    Inventors: Xin Hong, Jihong Xie, Stephen J. Van Noy, Dan Stanley, Mutlu Karakelle, Xiaoxiao Zhang, Michael J. Simpson
  • Publication number: 20070171362
    Abstract: In one aspect, the present invention provides a method of designing a diffractive ophthalmic lens (e.g., an intraocular lens (IOL)) that includes providing an optic having an anterior refractive surface and a posterior refractive surface, wherein the optic provides a far-focus power (e.g., in a range of about 18 to about 26 Diopters (D)). A truncated diffractive structure can be disposed on at least one of the surfaces for generating a near-focus add power (e.g., in a range of about 3 D to about 4 D). And the diffractive structure can be adjusted so as to obtain a desired distribution of optical energy between the near and far foci for a range of pupil sizes.
    Type: Application
    Filed: August 23, 2006
    Publication date: July 26, 2007
    Inventors: Michael Simpson, Mutlu Karakelle, Steve Vannoy, Xiaoxiao Zhang, Xin Hong, Jihong Xie
  • Publication number: 20060244904
    Abstract: In one aspect, the present invention provide an ophthalmic lens (e.g., an IOL) that includes an optic having an anterior optical surface and a posterior optical surface, where the optic provides an optical power in a range of about 16 D to about 25 D as measured in a medium having an index of refraction substantially similar to that of the eye's aqueous humor (e.g., about 1.336). At least one of the optical surfaces is characterized by an aspherical base profile such that the optic exhibits a negative spherical aberration in a range of about ?0.202 microns to about ?0.190 microns across the power range.
    Type: Application
    Filed: April 4, 2006
    Publication date: November 2, 2006
    Inventors: Xin Hong, Jihong Xie, Stephen Van Noy, Dan Stanley, Mutlu Karakelle, Xiaoxiao Zhang, Michael Simpson
  • Publication number: 20060227286
    Abstract: The present invention provides an ophthalmic lens (e.g., an intraocular lens) having an optic with an anterior surface and a posterior surface, which exhibits a shape factor (defined as a ratio of the sum of the anterior and posterior curvatures to the difference of such curvatures) in a range of about ?0.5 to about 4. In a related aspect, the shape factor of the optic lies in a range of about 0 to about 2. The above shape factors give rise to a plurality of different lens shapes, such as concave-convex, plano-convex and plano-concave.
    Type: Application
    Filed: April 4, 2006
    Publication date: October 12, 2006
    Inventors: Xin Hong, Stephen Van Noy, Jihong Xie, Dan Stanley, Mutlu Karakelle, Michael Simpson, Xiaoxiao Zhang