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:
Oct. 23, 2001
Filed:
May. 21, 1999
Roger Spink, Berneck, CH;
Leica Microsystems AG, Heerbrugg, CH;
Abstract
The invention relates to enhanced telemeasuring involving the use of laser beams which are initially directed onto a lens (,) in a parallel beam path and which are bundled by the lens (,) into focus. If the object plane is not located in focal point (A), two laser illuminated points (P) can be seen on the object plane. If these laser illuminated points are additionally coded, e.g. in the form of a horizontal or vertical line by corresponding additional lenses or masks in front of the lens (,), images of markings can be obtained. A time coding could also be included so that, for example, one time-delayed laser illuminates after another. The distance between both laser illuminated points serves a measure for the distance of the main lens (,) from the object plane, whereby this measure is computationally dependent upon the focal range of the lens (,) and the stereoscopic basis of both illumination sources in front of the lens (,).