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:
Apr. 08, 2003
Filed:
Mar. 14, 2001
Leif Andersson, Taby, SE;
Spectra Precision AB, Danderyd, SE;
Abstract
The invention relates to an electronic distance measuring device which measures the propagation time to and from a target of a shor pulse of a trasmitted electromagnetic beam from a radiation source comprising a microchip laser, and comprising objective optical system ( ); for the reflected beam from the target and a detecting unit ( ) to which the received beam is transmitted. Means ( ) is provided for making the transmitted and the receiving electromagnetic beam coaxial. Means ( ) are also provided for focusing the received beam onto the detecting unit ( ). A means ( ) makes the transmitted electromagnetic beam simultaneously as narrow and as collimated as possible in order to get a well-defined radiation measuring spot on the target.