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.

Date of Patent:
Jul. 14, 2020

Filed:

Jul. 06, 2018
Applicant:

Leica Geosystems Ag, Heerbrugg, CH;

Inventors:

Kai Fei, Changzhou, CN;

Guanghua Ma, Changzhou, CN;

Thomas Bösch, Lustenau, AT;

Assignee:

LEICA GEOSYSTEMS AG, Heerbrugg, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 15/02 (2006.01); G01C 15/00 (2006.01); G02B 27/30 (2006.01); H01S 5/022 (2006.01);
U.S. Cl.
CPC ...
G01C 15/004 (2013.01); G02B 27/30 (2013.01); H01S 5/02252 (2013.01); H01S 5/02288 (2013.01); H01S 5/02292 (2013.01);
Abstract

A laser level comprising a first laser module and a second laser module, each comprising a laser diode and an optical unit, a holder arranging the first laser module and the second laser module in a fixed relative position, and a housing, in which the holder is suspended with a gimbal or ball joint. Each optical unit comprises a collimating lens arranged along the beam path following the laser diode, and configured for collimating a beam emitted by the laser diode; a pair of partially transmitting mirrors, each arranged along the beam path following the collimating lens, and configured for laterally reflecting less than half of the collimated beam in terms of the beam cross-section, and in terms of the beam intensity; and a cylindrical lens arranged along the beam path following the pair of partially transmitting mirrors, and configured for shaping the collimated beam into a fan beam.


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