Patents by Inventor Fanglu Lu

Fanglu Lu 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).

  • Planar, high NA, low loss transmitting or reflecting lenses using sub-wavelength high contrast grating
    Patent number: 8755118
    Abstract: Planar lenses and reflectors are described comprising subwavelength high-contrast gratings (HCG) having high index of refraction grating elements spaced apart from one another in straight and/or curved segments and surrounded by low index material. The high-contrast grating is configured to receive an incident wave which excites multiple modes within the high-contrast grating and is focused for reflection and/or transmission by said high contrast grating. The width of the high contrast grating bars vary along a distribution direction of the grating bars which is perpendicular to the length of the grating bars and/or varies along the length of one or more grating bars to focus said reflection and/or transmission. The HCG is configured to provide double focusing, whose use is exemplified within a vertical cavity surface emitting laser (VCSEL) structure using focusing HCG structures for both the top and bottom mirrors.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 17, 2014
    Assignee: The Regents of the University of California
    Inventors: Connie Chang-Hasnain, Christopher Chase, Fanglu Lu, Forrest G. Sedgwick, Igor Karagodsky
  • PLANAR, HIGH NA, LOW LOSS TRANSMITTING OR REFLECTING LENSES USING SUB-WAVELENGTH HIGH CONTRAST GRATING
    Publication number: 20130058370
    Abstract: Planar lenses and reflectors are described comprising subwavelength high-contrast gratings (HCG) having high index of refraction grating elements spaced apart from one another in straight and/or curved segments and surrounded by low index material. The high-contrast grating is configured to receive an incident wave which excites multiple modes within the high-contrast grating and is focused for reflection and/or transmission by said high contrast grating. The width of the high contrast grating bars vary along a distribution direction of the grating bars which is perpendicular to the length of the grating bars and/or varies along the length of one or more grating bars to focus said reflection and/or transmission. The HCG is configured to provide double focusing, whose use is exemplified within a vertical cavity surface emitting laser (VCSEL) structure using focusing HCG structures for both the top and bottom mirrors.
    Type: Application
    Filed: August 23, 2012
    Publication date: March 7, 2013
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Connie Chang-Hasnain, Christopher Chase, Fanglu Lu, Forrest G. Sedgwick, Igor Karagodsky