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:
Dec. 11, 1990
Filed:
Sep. 30, 1988
Helmut Kipphan, Schwetzingen, DE;
Josef Haase, Neckargemund, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
Sensor device for analyzing a surface structure includes a lighting device for emitting a focussed beam of light rays directed onto a surface, a radiation detector element for sensing light rays reflected from the surface, and an evaluating device for determining the surface structure from signals emitted by the light-ray detector element, a parameter T.sub.N for the surface structure being determinable by the evaluating device in accordance with a third moment of distribution of intensity of the reflected light rays in accordance with an equation: ##EQU1## wherein n represents a number of measuring points along a scattering indicatrix corresponding to the light rays reflected from the surface; P.sub.i is an initialized measuring signal according to an equation: ##EQU2## wherein I.sub.i is in the intensity of the light rays on a measuring point i; K represents a scaling factor; and M has a value determinable from values for i and P.sub.i in accordance with the equation: ##EQU3##