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:
May. 07, 2019
Filed:
Oct. 29, 2015
Zkw Group Gmbh, Wieselburg, AT;
Thomas Mitterlehner, Mank, AT;
Christian Kalousek, Neustift-Innermanzing, AT;
ZKW Group GmbH, Wieselburg, AT;
Abstract
For measuring the oscillation amplitude of a scanner mirror in a projection system of a motor vehicle headlight, a laser beam generated by a laser source is directed onto the scanner mirror and reflected by the latter so that the laser beam thus reflected is incident on a detector device () that has a plurality of photodetector elements (Q, Q, Q, Q) and there describes a curve (P) based on the oscillation movement of the scanner mirror. The center point of the curve (P) is offset by an offset value (x, y) from the center of the detector device (). The time period (t, t) in which the curve passes through the specific detector region (R, R) that corresponds to a coordinate to be measured is determined; and the oscillation amplitude (x, y) in the direction of the specific coordinate is determined using the ratio of the time period (t, t) determined in this manner to the total duration (T) of an oscillation period and the offsets (x, y).