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:
May. 13, 2003
Filed:
Dec. 28, 2001
Timothy J. Litvin, Santa Cruz, CA (US);
Trimble Navigation Limited, Sunnyvale, CA (US);
Abstract
A laser beam projecting instrument primarily for construction purposes, and preferably self-leveling, produces four or five orthogonal output beams. The high-intensity central portion of a collimated elliptical beam from a laser diode is partially diverted by a beam splitter periscope device to produce one output beam, and the remainder of that central beam region is transmitted to produce another output beam in the straight-a-head direction. Two additional beams are produced from outer portions the beam's long dimension. In another embodiment, a five-beam instrument utilized two such periscopes in succession, thus producing three beams from the high intensity central region of the collimated beam.