The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 1983
Filed:
Jun. 22, 1981
Applicant:
Inventor:
John D Kuppenheimer, Jr, Tewksbury, MA (US);
Assignee:
Sanders Associates, Inc., Nashua, NH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356124 ;
Abstract
An improved knife edge system which enables testing of even high numerical aperture optics is achieved by using a microscope objective to gather the light from a small pinhole and fill a large optic under test, and in conjunction with a special eye piece permits viewing of the surface of the optic under test.