Patents by Inventor Allel CHEDAD

Allel CHEDAD 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: 11016375
    Abstract: A light projection system for generating an image with three primary colors, each primary color being respectively defined by a first, second and third wavebands. The system includes a first blue laser source emitting a first beam in a fourth waveband, the first blue laser source having a first laser driver, a second blue laser source emitting a second beam having a central wavelength and a fifth waveband, the second blue laser source having a second laser driver, a substrate having a wavelength conversion element for emitting light at a plurality of wavelengths after absorption of a light beam at an excitation wavelength within a fifth waveband of the second blue laser source and a beam combiner for combining the combined first beam and the converted beam, which combination results in a white beam. Dichroic losses can be reduced by using a green phosphor together with red laser assistance.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: May 25, 2021
    Assignee: BARCO N.V.
    Inventors: Mihaela Tarpan, Allel Chedad, Bart Maximus, Nico Coulier
  • Publication number: 20200192204
    Abstract: A light projection system for generating an image with three primary colors, each primary color being respectively defined by a first, second and third wavebands. The system includes a first blue laser source emitting a first beam in a fourth waveband, the first blue laser source having a first laser driver, a second blue laser source emitting a second beam having a central wavelength and a fifth waveband, the second blue laser source having a second laser driver, a substrate having a wavelength conversion element for emitting light at a plurality of wavelengths after absorption of a light beam at an excitation wavelength within a fifth waveband of the second blue laser source and a beam combiner for combining the combined first beam and the converted beam, which combination results in a white beam. Dichroic losses can be reduced by using a green phosphor together with red laser assistance.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Applicant: BARCO N.V.
    Inventors: Mihaela TARPAN, Allel CHEDAD, Bart MAXIMUS, Nico COULIER
  • Patent number: 10574951
    Abstract: A light projection system for generating an image with three primary colors, each primary color being respectively defined by a first, second and third wavebands. The system includes a first blue laser source emitting a first beam in a fourth waveband, the first blue laser source having a first laser driver, a second blue laser source emitting a second beam having a central wavelength and a fifth waveband, the second blue laser source having a second laser driver, a substrate having a wavelength conversion element for emitting light at a plurality of wavelengths after absorption of a light beam at an excitation wavelength within a fifth waveband of the second blue laser source and a beam combiner for combining the combined first beam and the converted beam, which combination results in a white beam. Dichroic losses can be reduced by using a green phosphor together with red laser assistance.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 25, 2020
    Assignee: BARCO N.V.
    Inventors: Mihaela Tarpan, Allel Chedad, Bart Maximus, Nico Coulier
  • Patent number: 10345606
    Abstract: A projection system for generating an image with three primary colors, including a first and second blue laser beam, a wavelength conversion element for converting the second blue beam into a converted beam having a waveband including at least the second and third wavebands, a beam combiner for combining the first beam and the converted beam, which combination results in a white beam, a notch filter placed in the optical path of the white beam to form a modified white beam including at least the first, second and third wavebands provided to an imaging module, where a static waveband reduction filter is further provided for changing the wavelength of transmitted second waveband of the white beam, such as to adjust a projector white point shift.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 9, 2019
    Assignee: BARCO VISUAL (BEIJING) ELECTRONICS COMPANY LIMITED
    Inventors: Nico Gerard Coulier, Xiao Yun Wang, Allel Chedad
  • Publication number: 20190037185
    Abstract: A light projection system for generating an image with three primary colors, each primary color being respectively defined by a first, second and third wavebands. The system includes a first blue laser source emitting a first beam in a fourth waveband, the first blue laser source having a first laser driver, a second blue laser source emitting a second beam having a central wavelength and a fifth waveband, the second blue laser source having a second laser driver, a substrate having a wavelength conversion element for emitting light at a plurality of wavelengths after absorption of a light beam at an excitation wavelength within a fifth waveband of the second blue laser source and a beam combiner for combining the combined first beam and the converted beam, which combination results in a white beam. Dichroic losses can be reduced by using a green phosphor together with red laser assistance.
    Type: Application
    Filed: January 26, 2017
    Publication date: January 31, 2019
    Applicant: Barco N.V.
    Inventors: Mihaela TARPAN, Allel CHEDAD, Bart MAXIMUS, Nico COULIER
  • Publication number: 20190025601
    Abstract: A projection system for generating an image with three primary colors, including a first and second blue laser beam, a wavelength conversion element for converting the second blue beam into a converted beam having a waveband including at least the second and third wavebands, a beam combiner for combining the first beam and the converted beam, which combination results in a white beam, a notch filter placed in the optical path of the white beam to form a modified white beam including at least the first, second and third wavebands provided to an imaging module, where a static waveband reduction filter is further provided for changing the wavelength of transmitted second waveband of the white beam, such as to adjust a projector white point shift.
    Type: Application
    Filed: February 4, 2016
    Publication date: January 24, 2019
    Inventors: Nico Gerard COULIER, Xiao Yun WANG, Allel CHEDAD