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:
Jun. 21, 2002
Yoko Shinohara, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Kenji Kato, Chiba, JP;
Susumu Ichihara, Chiba, JP;
Takashi Niwa, Chiba, JP;
Toshifumi Ohkubo, Suginami-ku, Tokyo, JP;
Terunao Hirota, Nerima-ku, Tokyo, JP;
Hiroshi Hosaka, Matsudo-shi, Chiba, JP;
Kiyoshi Itao, Kamakura-shi, Kanagawa, JP;
Other;
Abstract
It is an optical information recording and reading apparatus for recording and/or reading information at a high density by using a near-field light-generating device as a near-field optical head. The end surface of the core of a flexible optical waveguide is formed in an intermediate position in the optical waveguide and in a portion fixed to the near-field optical head. Light for recording and reading information is spread within the clad. The spread light flux is reflected toward the near-field optical head by a reflective surface formed on the side of one end of the optical waveguide. The reflected light flux is collected by light-collecting structures and then is made to enter an optical minute aperture formed in the near-field optical head. Near-field light is created near the minute aperture. Light scattered by the surface of the recording medium is received. Thus, information on the recording medium can be recorded and read.