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:
Nov. 01, 2011
Filed:
Mar. 03, 2009
Takashi Mihara, Hyogo, JP;
Masahiro Birukawa, Osaka, JP;
Takashi Mihara, Hyogo, JP;
Masahiro Birukawa, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A near-field light detection element is provided with a light source, a conductive scatterer for generating near-field light by being irradiated with light from the light source, and a photoelectric conversion element arranged in a near-field light generation region near the scatterer. The scatterer irradiates near-field light to a recording medium, and the near-field light detection element detects an intensity change of the near-field light generated by a change of the dielectric constant of the recording medium based on an electrical conductivity change of the photoelectric conversion element.