Patents by Inventor Herman E. Reedy

Herman E. Reedy 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).

  • Fixed wavelength laser using multiorder halfwave plate
    Patent number: 5012473
    Abstract: A laser adapted to operate at a constant, predetermined wavelength includes the following elements disposed in order within a laser cavity and aligned along the path of light flow therethrough: a highly reflective rear mirror, a halfwave plate, a Brewster window, an active laser medium, and an output coupler. The halfwave plate is designed to rotate incident light beams by 180.degree. at the predetermined wavelength and to rotate incident light beams by an amount other than 180.degree. at wavelengths other than the predetermined wavelength. In a preferred embodiment, the Brewster window is a thin film polarizer designed for the predetermined wavelength.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: April 30, 1991
    Assignee: II-VI Incorporated
    Inventor: Herman E. Reedy