Patents Assigned to Darwin Optical Co., Ltd.
  • PHOTOCHROMIC OPTICAL ARTICLE
    Publication number: 20110038024
    Abstract: A photochromic optical article comprises a substrate, and a photochromic coating coated on an outer surface of the substrate and having at least two photochromic layers. Each of the photochromic layers has a composition that contains a carrier and at least one photochromic dye. The compositions of the photochromic layers are different from each other.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Applicant: DARWIN OPTICAL CO., LTD.
    Inventors: Yun-Cheng Wang, Yi-Tang Wang
  • Photochromic optical article
    Patent number: 7884992
    Abstract: A photochromic optical article comprises a substrate, and a photochromic coating coated on an outer surface of the substrate and having at least two photochromic layers. Each of the photochromic layers has a composition that contains a carrier and at least one photochromic dye. The compositions of the photochromic layers are different from each other.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 8, 2011
    Assignee: Darwin Optical Co., Ltd.
    Inventors: Yun-Cheng Wang, Yi-Tang Wang