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:
Jul. 12, 1988
Filed:
Jul. 23, 1986
Applicant:
Inventors:
Hermann Gerlinger, Aalen-Ebnat, DE;
Gerhard Hohberg, Oberkochen, DE;
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G01J / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
356319 ; 356328 ; 356446 ; 356429 ;
Abstract
A reflectance measuring apparatus for contactless measurement is described, in which the result of measurement is not dependent on the distance from the test object within a predetermined range. This is attained by disposing the light source in the focus of a condenser, and by providing that the measuring area is smaller than the core region inside the irradiated area on the surface of the test object.