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:
Dec. 08, 2009
Filed:
Aug. 11, 2006
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Kenji Kato, Chiba, JP;
Takashi Niwa, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Kenji Kato, Chiba, JP;
Takashi Niwa, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
The object of the present invention is to provide an information recording/reproduction device for implementing high-density information recording and reading using mutual interaction of a recording medium with near field light, and particularly to a near field optical head with a high optical efficiency and a manufacturing method thereof. This is achieved by enabling an energy propagation mechanism via a plasmon by forming a layer dispersed with metal particulate at a microscopic opening generating near field light, and therefore increase optical efficiency.