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. 24, 2004
Filed:
Feb. 26, 2002
Applicant:
Inventors:
Kimio Tatsuno, Tokyo, JP;
Masahide Tokuda, Ome, JP;
Shigeharu Kimura, Tokyo, JP;
Takeshi Shimano, Tokorozawa, JP;
Hirohisa Sano, Niza, JP;
Assignee:
Hitachi, Litd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 ; H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 3/00 ; H01S 5/00 ;
Abstract
This invention is provided to reduce wavefront aberrations caused by the filling of a transparent resin intended to prevent degradation of a diode laser in a hermetically sealed package. A parallel-plane plate is arranged between a diode laser and an objective lens, and a transparent resin is filled into a space formed between the diode laser and the parallel-plane plate. With this invention, degradations of the diode lasers can be prevented and the wavefront aberrations can be reduced.