Patents by Inventor Cristian Dan

Cristian Dan 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: 11835362
    Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: December 5, 2023
    Assignee: Lumileds LLC
    Inventors: Charles Schrama, Cristian Dan
  • Publication number: 20220065624
    Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.
    Type: Application
    Filed: October 13, 2021
    Publication date: March 3, 2022
    Applicant: Lumileds LLC
    Inventors: Charles Schrama, Cristian Dan
  • Patent number: 11150088
    Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 19, 2021
    Assignee: Lumileds LLC
    Inventors: Charles Schrama, Cristian Dan
  • Publication number: 20210095201
    Abstract: A wavelength converting structure is disclosed, the wavelength converting structure including a spinel type SWIR phosphor material having emission wavelengths in the range of 1000 to 1700 nm, the SWIR phosphor material including AE1-x-zAz+0.5(x-y)D2+0.5(x-y)-z-u EzO4:Niy,Cru where AE=Mg, Zn, Co, or Be, or mixtures thereof, A=Li, Na, Cu, or Ag, or mixtures thereof, D=Ga, Al, B, In, or Sc, or mixtures thereof, and E=Si, Ge, Sn, Ti, Zr, or Hf, or mixtures thereof; where 0?x?1, 0<y?0.1, 0?z?1, 0?u?0.2.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Applicant: LUMILEDS HOLDING B.V.
    Inventors: Peter Josef SCHMIDT, Detlef WIECHERT, Cristian DAN
  • Publication number: 20200363198
    Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.
    Type: Application
    Filed: May 11, 2020
    Publication date: November 19, 2020
    Applicant: Lumileds LLC
    Inventors: Charles Schrama, Cristian Dan
  • Patent number: 9360774
    Abstract: Disclosed is a lithographic apparatus comprising a member susceptible to deformation and a deformation sensor for measuring a deformation of said member. The deformation sensor comprises a first birefringence sensing element arranged to be subjected to stress in dependency of the deformation of said member and a light system configured to transmit polarized light through the first birefringence sensing element, wherein said polarized light has a first polarization state prior to being transmitted through the first birefringence sensing element. The deformation sensor further comprises a detector for detecting a second polarization state of the polarized light after being transmitted through the first birefringence sensing element and a calculation unit to determine the deformation of said member based on the first and second polarization state.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: June 7, 2016
    Assignee: ASML Netherlands B.V.
    Inventors: Johannes Hendrikus Maria Spruit, Ruud Antonius Catharina Maria Beerens, Richard Henricus Adrianus Van Lieshout, Cristian Dan