Patents Assigned to Calhoun Vision
  • Initiator and ultraviolet absorber for changing lens power by ultraviolet light
    Publication number: 20030176521
    Abstract: Novel blends of photo-initiators and photo-absorbers are disclosed. By the proper selection of the type and amount of absorber used in a composition, it is possible to regulate the conditions under which photo-induced reactions occur. In a specific embodiment, blends of UV initiators and UV absorbers are used to control the conditions under which UV initiated polymerization occurs.
    Type: Application
    Filed: December 13, 2002
    Publication date: September 18, 2003
    Applicant: CALHOUN VISION
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang
  • Readjustable optical elements
    Publication number: 20030174375
    Abstract: The invention relates to optical elements whose optical properties can be repeatedly adjusted over time. Through the use of modifying compositions capable of stimulus induced polymerization coupled with a blend of stimulus absorbers and initiators, it is possible to repeatedly adjust the optical properties of the element by exposing the lens to a stimulus which exceeds the absorption capacity of the stimulus absorber.
    Type: Application
    Filed: December 19, 2002
    Publication date: September 18, 2003
    Applicant: CALHOUN VISION, INC.
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang