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:
Apr. 23, 2002
Filed:
Feb. 14, 2000
Nobuyuki Kasama, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Norio Chiba, Chiba, JP;
Takashi Niwa, Chiba, JP;
Kunio Nakajima, Chiba, JP;
Manabu Oumi, Chiba, JP;
Kenji Kato, Chiba, JP;
Masataka Shinogi, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
There is provided a near-field optical memory head for recording and/or reproducing information on a recording medium by utilizing near-field light which is a near-field optical memory head having a compact constitution and is suitable for mass production and array formation. According to the near-field optical memory head , in a planar substrate formed by penetrating at least one hole in a shape of an inverted pyramid such that a top portion thereof constitutes a very small aperture , a near-field light forming system for forming near-field light at a recording medium and a near-field light detecting system for guiding propagating light provided by interactively operating the formed near-field light with the very small aperture to a light detecting element are integrated.