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:
Aug. 31, 2004
Filed:
Feb. 07, 2002
Tatsuya Ariga, Hiratsuka, JP;
Takahito Kumazaki, Hiratsuka, JP;
Jun Akita, Oyama, JP;
Noritoshi Itoh, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A narrow band ultraviolet laser device which can restrict a change in temperature gradient at light transmitting sections and maintain laser light at a high grade. To this end, the ultraviolet laser device includes light shielding elements ( A to C) having light transmitting sections ( A to C) each constituted by an opening for transmitting laser light ( ), and light shielding sections ( A to C) that surround the light transmitting sections ( A to C), remove an undesired laser light ( A) from an optical path and shape the laser light ( ) into a predetermined form, wherein heating means ( ) for heating the light transmitting sections ( A to C) are provided in the vicinity of the light shielding elements ( A to C).