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:
Nov. 02, 2010
Filed:
May. 12, 2006
Kazunori Matsushita, Hitachinaka, JP;
Takashi Nishimura, Hitachinaka, JP;
Noritaka Tadano, Hitachinaka, JP;
Yutaka Ito, Hitachinaka, JP;
Kazunori Matsushita, Hitachinaka, JP;
Takashi Nishimura, Hitachinaka, JP;
Noritaka Tadano, Hitachinaka, JP;
Yutaka Ito, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A laser marking device () includes a laser light source () that emits a laser beam, and a beam splitter () receiving the laser beam and allowing a part of the laser beam to be reflected thereat and a remaining part of the laser beam to be transmitted therethorogh. The beam splitter () has an unpolarized film () into which the laser beam is entered to divide the laser beam into a plurality of laser beams that travels in different directions, at a predetermined rate regardless of change of a polarized characteristic of the laser beam.