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:
Sep. 29, 2009
Filed:
Dec. 13, 2004
Norio Kurita, Hamamatsu, JP;
Tetsuya Osajima, Hamamatsu, JP;
Norio Kurita, Hamamatsu, JP;
Tetsuya Osajima, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
To provide a laser processing apparatus which can converge a laser beam for processing an object to be processed at a position as close as possible to a predetermined position. This laser processing apparatus is one for irradiating an object to be processed with a processing laser beam while positioning a converging point within the object so as to form a modified region caused by multiphoton absorption within the object along a line along which, the object should be cut in the object, and comprises an objective lens unitincluding a processing objective lenswhich converges the processing laser beam and a rangefinding laser beam for measuring a displacement of a main surface of the object on an identical axis, a light-receiving partwhich receives a reflected light beam of the rangefinding laser beam on the main surface, and an actuatorwhich holds the processing objective lensaccording to the received reflected light beam such that the lensis capable of freely advancing and retracting with respect to the main surface; and a housingto which a laser unit for emitting the processing laser beam is attached. The objective lens unitis detachably attached to the housing