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:
Feb. 17, 2015
Filed:
Jul. 01, 2009
Naoya Matsumoto, Hamamatsu, JP;
Norihiro Fukuchi, Hamamatsu, JP;
Naohisa Mukozaka, Hamamatsu, JP;
Takashi Inoue, Hamamatsu, JP;
Yuu Takiguchi, Hamamatsu, JP;
Naoya Matsumoto, Hamamatsu, JP;
Norihiro Fukuchi, Hamamatsu, JP;
Naohisa Mukozaka, Hamamatsu, JP;
Takashi Inoue, Hamamatsu, JP;
Yuu Takiguchi, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A laser machining device is provided with a laser light source, a spatial light modulator, a driving unit, a control unit, and a condensing optical system. The control unit selects a basic hologram corresponding to each basic machining pattern included in a whole machining pattern in a workpiece from a plurality of basic holograms stored by the storage unit, and determines a display region of the basic hologram in the spatial light modulator so that the deviation of the value of 'Iη/n' becomes small for the selected respective basic hologram when the intensity of a laser beam input to a display region of the basic hologram in the spatial light modulator is defined as I, the diffraction efficiency of the laser beam in the basic hologram is defined as η, and the number of condensing points in a basic machining pattern corresponding to the basic hologram is defined as n.