Patents by Inventor Gracia LOO

Gracia LOO 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).

  • Optical article with high reflection in the near infrared region and in the blue light region
    Patent number: 11199729
    Abstract: This invention relates to an optical article comprising a transparent substrate coated with an antireflective coating comprising at least two layers having a low refractive index, and at least two layers having a high refractive index, one layer having a high refractive index being the nearest from said substrate, characterized in that the total physical thickness of said antireflective coating is equal to or lower than 600 nm, and such that: —the mean reflection factor in the near infrared region is higher than or equal to 20% at an angle of incidence lower than 35°, and —the mean reflection factor RmB of blue light at a wavelength ranging from 420 to 450 nm is higher than or equal to 7.0% at an angle of incidence lower than 15°.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: December 14, 2021
    Assignee: Essilor International
    Inventors: Xingzhao Ding, Shi Qin Gracia Loo, Andrew Rosales Pelayo
  • Optical Article with High Reflection in the Near Infrared Region and in the Blue Light Region
    Publication number: 20190171039
    Abstract: This invention relates to an optical article comprising a transparent substrate coated with an antireflective coating comprising at least two layers having a low refractive index, and at least two layers having a high refractive index, one layer having a high refractive index being the nearest from said substrate, characterized in that the total physical thickness of said antireflective coating is equal to or lower than 600 nm, and such that: —the mean reflection factor in the near infrared region is higher than or equal to 20% at an angle of incidence lower than 35°, and—the mean reflection factor RmB of blue light at a wavelength ranging from 420 to 450 nm is higher than or equal to 7.0% at an angle of incidence lower than 15°.
    Type: Application
    Filed: April 28, 2017
    Publication date: June 6, 2019
    Inventors: Xingzhao DING, Gracia LOO, Andrew Rosales PELAYO