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:
Oct. 02, 2001
Filed:
Nov. 23, 1998
Applicant:
Inventors:
Yasushi Miyauchi, Akishima, JP;
Kimio Nakamura, Tokorozawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 ;
U.S. Cl.
CPC ...
G11B 7/00 ;
Abstract
An information recording and reproducing apparatus includes an optical head having a super resolution film formed therein. The optical head includes a laser for producing an energy beam, a lens for focusing the energy beam and a super resolution film disposed in a position on which the energy beams is focused by the lens, whereby recording and reproducing of high-density information is attained.