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:
Oct. 28, 2014
Filed:
Dec. 04, 2009
Kenshi Fukumitsu, Hamamatsu, JP;
Shingo Oishi, Hamamatsu, JP;
Shinichiro Aoshima, Hamamatsu, JP;
Atsuko Aoshima, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A cylindrical lens () diverges a laser beam (L) in the Y-axis direction (i.e., within the YZ plane) but neither diverges nor converges it in the X-axis direction (i.e., within the ZX plane). An objective lens () converges the laser beam (L) emitted from the cylindrical lens () into a point Pin the Y-axis direction and into a point Pin the X-axis direction. A pair of knife edges () adjust the divergence angle (θ) of the laser beam (L) incident on the objective lens () in the Y-axis direction. As a consequence, the cross section of the laser beam (L) becomes an elongated form extending in the Y-axis direction at the point Pwhile the maximum length in the Y-axis direction is regulated. Therefore, locating the point Pon the front face of a work (S) can form an elongated working area extending in the Y-axis direction by a desirable length on the front face of the work (S).