Patents by Inventor D. A. Thiede

D. A. Thiede 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).

  • Integrated ultraviolet and infrared source with minimal visible radiation
    Patent number: 5563420
    Abstract: A single integrated source of infrared and ultraviolet energy with minimal visible radiation therein. The invention (10) includes a first source of infrared and visible radiation (12) and a second source of ultraviolet and visible radiation (14). In a specific implementation, visible radiation from the infrared source (12) is eliminated by a filter (20) comprising a germanium substrate coated with a thin film multilayer stack. The filtered infrared beam and the ultraviolet beam are combined by a set of mirrors. A cold first mirror (30) directs the ultraviolet energy to a cold second mirror (22) which then transmits infrared energy and reflects ultraviolet energy. The visible radiation from the ultraviolet source is eliminated by transmission through the first cold mirror. The first and second mirrors provide a composite output beam which is collimated by a third mirror (36) and output as a single beam. For safety, a shutter (24) is provided in front of the ultraviolet source (14).
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: October 8, 1996
    Assignee: Santa Barbara Research Center
    Inventors: M. E. Sullivan, G. A. Walter, D. A. Thiede