Patents by Inventor Willem Rosier

Willem Rosier 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).

  • Method of and apparatus for determining focus of an imaging system
    Publication number: 20070058159
    Abstract: The focus of an optical system (20) can be determined in a reliable and accurate way by arranging a first and second test object (62,64) having a periodic structure at different sides of the focal plane (66) of the optical system and determining the difference in modulation depth of the images formed on different areas (32,34) of a radiation-sensitive detection system (30).
    Type: Application
    Filed: November 2, 2004
    Publication date: March 15, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Peter Greve, Albert Bijlsma, Willem Rosier