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:
Mar. 04, 2003
Filed:
Aug. 28, 2001
Applicant:
Inventor:
Lieu-Kim Dang, Schaan, LI;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/710 ; G02B 2/730 ;
U.S. Cl.
CPC ...
G02B 2/710 ; G02B 2/730 ;
Abstract
An optical alignment apparatus including a beam splitter ( ) for diverging a primary laser beam ( ) emitted by a radiation source ( ) into a plurality of divergent beam portions ( ), and elements for minimizing the angle error of the divergent beam portions ( ) and including a collimator ( ) located between the radiation source ( ) and the beam splitter ( ), and a spacially oscillatingly adjustable, transparent, plane-parallel plate ( ) arranged in a path of the primary laser beam ( ).