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:
Feb. 22, 1994
Filed:
Sep. 25, 1992
Hans Steinbichler, 8201 Neubeuern, DE;
Other;
Abstract
An apparatus is used for ascertaining the absolute coordinates of an object (1). Said apparatus includes a light source (6), projection optics, in particular a projection objective (7), a projection grating (2) which is projected onto the object (1) through the projection optics (7) to form an image, a sensor (5) for receiving the light (4) reflected from the object (1), and an objective (8) projecting the light (4) reflected from the object (1) onto the sensor (5). In order to enable the simple determination of the absolute coordinates of the object (1), the projection grating (2) and/or the sensor (5) are rotatable. There is provided an evaluation unit which evaluates the signals (shots or pictures) of the sensor (5) at least two different angle positions of the projection grating (2) or of the sensor (5) and determines the absolute coordinates of the object (1) therefrom.