Patents by Inventor Wallace Stewart Foulds

Wallace Stewart Foulds 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).

  • Ocular lens
    Patent number: 9709826
    Abstract: According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: July 18, 2017
    Assignee: SINGAPORE HEALTH SERVICES PTE. LTD.
    Inventors: Wallace Stewart Foulds, Chi Dzung Luu
  • OCULAR LENS
    Publication number: 20150198820
    Abstract: According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 16, 2015
    Applicant: SINGAPORE HEALTH SERVICES PTE. LTD.
    Inventors: Wallace Stewart Foulds, Chi Dzung Luu
  • Light source
    Patent number: 9074750
    Abstract: According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: July 7, 2015
    Assignee: SINGAPORE HEALTH SERVICES PTE. LTD.
    Inventors: Wallace Stewart Foulds, Chi Dzung Luu
  • OCULAR LENS
    Publication number: 20130250235
    Abstract: According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.
    Type: Application
    Filed: September 28, 2011
    Publication date: September 26, 2013
    Applicant: SINGAPORE HEALTH SERVICES PTE. LTD.
    Inventors: Wallace Stewart Foulds, Chi Dzung Luu