Patents Assigned to Yujin Tech21 Co., Ltd.
  • Plastic photochromic lens and method for preparation thereof
    Publication number: 20050202267
    Abstract: Disclosed is a coating composition for a plastic photochromic lens and the plastic photochromic lens coated with the same. The coating composition includes a spiropyran photovariable color compound and/or spirooxazine photovariable color compound dissolved in toluene, and an acryl based binder. The plastic photochromic lens coated with the coating composition has advantages of short variable time, and good adhesion of the coating composition to the plastic lens and UV prevention effect without an undesirable haze phenomenon.
    Type: Application
    Filed: November 29, 2002
    Publication date: September 15, 2005
    Applicant: Yujin Tech21 Co., Ltd.
    Inventors: Jin-Wook Ha, Jin-Heon Ha, Jee-Nyu Hong, Seung-Hyun Cho