发明名称 |
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 |
US6201600(B1) |
申请公布日期 |
2001.03.13 |
申请号 |
US19970995081 |
申请日期 |
1997.12.19 |
申请人 |
NORTHROP GRUMMAN CORPORATION |
发明人 |
SITES PETER WINSTON;NELMS ANTHONY SCOTT;ROCHE BERNARD A. |
分类号 |
G01M11/02;(IPC1-7):G01B9/00;G01N21/00 |
主分类号 |
G01M11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|