Patents Examined by Khaled Sharmi
  • System employing preconditioned radiation for detecting defects in transparent objects
    Patent number: 4900916
    Abstract: An apparatus and method for inspecting transparent objects is disclosed. The apparatus employs preconditioned radiation to detect defects having small radii of curvature or other such highly refractive surfaces and discriminate them from desirable markings having larger radii of curvature. The apparatus comprises a radiation source, means for selecting angular spectrum ranges, means for modifying average angles of incidence, radiation detection means and processing means.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: February 13, 1990
    Assignee: Ball Corporation
    Inventor: Robert H. Cormack