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:
Jun. 25, 2002
Filed:
Aug. 31, 1999
Jurg Hinderling, Marbach, CH;
Paul Benz, Diepoldsau, CH;
Leica Geosystems AG, Heerbrugg, CH;
Abstract
The invention relates to a device for optical distance measurement in geodetic and industrial surveying. It comprises a transmitter unit ( ) having one or two optical radiation sources ( ) which emit a diffraction-limited, visible radiation and a divergent visible or infrared radiation. The radiation of the two radiation sources ( ) is passed through a common lens ( ) and directed toward a target object ( ). The radiation reflected or scattered by the target object ( ) is received by the same lens ( ). Selection means ( ) for selecting the radiation or the radiation sources ( ) are provided. Consequently, the distance to cooperative and noncooperative target objects ( ) can be measured at short and long distances with high positional resolution. When used in a theodolite, the three-dimensional coordinates of the target object ( ) can be determined with very high accuracy.