METHOD AND APPARATUS FOR THE AUTOMATIC INSPECTION OF OPTICALLY TRANSMISSIVE OBJECTS HAVING A LENS PORTION
摘要
A system for inspecting intraocular lenses which utilizes a light source and an electronic camera for obtaining images of the lens under test. A series of masks is utilized during the obtaining of the images and includes a bright field mask which allows the transmission of light through the lens, a dark field mask which blocks a portion of the light which would normally pass through the lens and a transition mask which is constituted by fine stripes. A signal processor analyzes the images obtained utilizing the masks and provides an indication of predetermined defects in the lens.
申请公布号
WO9932869(A1)
申请公布日期
1999.07.01
申请号
WO1998US26754
申请日期
1998.12.16
申请人
NORTHROP GRUMMAN CORPORATION
发明人
SITES, PETER, WINSTON;NELMS, ANTHONY, SCOTT;ROCHE, BERNARD, A.