Patents by Inventor Robert Tienhan CHANG

Robert Tienhan CHANG 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).

  • Patent number: 11484201
    Abstract: Modular lens adapter system are provided for use with a hand held computer device having a camera for mobile ophthalmoscopy. The modular lens adapter systems include an anterior adapter and a posterior adapter configured to removably engage with a hand held computer device. The anterior adapter can include a variable intensity light source, a clamp, and a movable macro lens. The posterior adapter can include a hand held computer device mount, a lens mount, and a telescoping arm with a first end and a second end with the first end configured to removably engage with the mount and the second end configured to contact the lens mount. Methods are also provided for using the systems to obtain an image of an anterior portion of the patient's eye and a posterior portion of the patient's eye.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: November 1, 2022
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: David Myung, Robert Tienhan Chang, Alexandre Jais
  • Publication number: 20200281465
    Abstract: Modular lens adapter system are provided for use with a hand held computer device having a camera for mobile ophthalmoscopy. The modular lens adapter systems include an anterior adapter and a posterior adapter configured to removably engage with a hand held computer device. The anterior adapter can include a variable intensity light source, a clamp, and a movable macro lens. The posterior adapter can include a hand held computer device mount, a lens mount, and a telescoping arm with a first end and a second end with the first end configured to removably engage with the mount and the second end configured to contact the lens mount. Methods are also provided for using the systems to obtain an image of an anterior portion of the patient's eye and a posterior portion of the patient's eye.
    Type: Application
    Filed: February 14, 2020
    Publication date: September 10, 2020
    Inventors: David MYUNG, Robert Tienhan CHANG, Alexandre JAIS
  • Patent number: 10743761
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 18, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior Univeristy
    Inventors: David Myung, Robert Tienhan Chang, Lingmin He, Alex Nugent, Huynh P. Van, Ira G. Wong, Alexandre Jais, Mark Blumenkranz
  • Patent number: 10561315
    Abstract: Modular lens adapter system are provided for use with a hand held computer device having a camera for mobile ophthalmoscopy. The modular lens adapter systems include an anterior adapter and a posterior adapter configured to removably engage with a hand held computer device. The anterior adapter can include a variable intensity light source, a clamp, and a movable macro lens. The posterior adapter can include a hand held computer device mount, a lens mount, and a telescoping arm with a first end and a second end with the first end configured to removably engage with the mount and the second end configured to contact the lens mount. Methods are also provided for using the systems to obtain an image of an anterior portion of the patient's eye and a posterior portion of the patient's eye.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: February 18, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: David Myung, Robert Tienhan Chang, Alexandre Jais
  • Publication number: 20190269325
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 5, 2019
    Inventors: David MYUNG, Robert Tienhan CHANG, Lingmin HE, Alex NUGENT, Huynh P. VAN, Ira G. WONG, Alexandre JAIS, Mark BLUMENKRANZ
  • Patent number: 10092182
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 9, 2018
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: David Myung, Robert Tienhan Chang, Lingmin He, Alex Nugent, Huynh P. Van, Ira G. Wong, Alexandre Jais, Mark Blumenkranz
  • Publication number: 20180116509
    Abstract: Modular lens adapter system are provided for use with a hand held computer device having a camera for mobile ophthalmoscopy. The modular lens adapter systems include an anterior adapter and a posterior adapter configured to removably engage with a hand held computer device. The anterior adapter can include a variable intensity light source, a clamp, and a movable macro lens. The posterior adapter can include a hand held computer device mount, a lens mount, and a telescoping arm with a first end and a second end with the first end configured to removably engage with the mount and the second end configured to contact the lens mount. Methods are also provided for using the systems to obtain an image of an anterior portion of the patient's eye and a posterior portion of the patient's eye.
    Type: Application
    Filed: March 25, 2016
    Publication date: May 3, 2018
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: David MYUNG, Robert Tienhan CHANG, Alexandre JAIS
  • Publication number: 20170280996
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 5, 2017
    Inventors: David MYUNG, Robert Tienhan CHANG, Lingmin HE, Alex NUGENT, Huynh P. VAN, Ira G. WONG, Alexandre JAIS, Mark BLUMENKRANZ
  • Patent number: 9706918
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: July 18, 2017
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: David Myung, Robert Tienhan Chang, Lingmin He, Alex Nugent, Huynh P. Van, Ira G. Wong, Alexandre Jais, Mark Blumenkranz
  • Publication number: 20160113489
    Abstract: A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.
    Type: Application
    Filed: May 30, 2014
    Publication date: April 28, 2016
    Inventors: David MYUNG, Robert Tienhan CHANG, Lingmin HE, Alex NUGENT, Huynh P. VAN, Ira G. WONG, Alexandre JAIS, Mark BLUMENKRANZ