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:
Jan. 03, 2012
Filed:
Aug. 29, 2009
Shohei Inoue, Fukuoka, JP;
Syougo Horinouchi, Fukuoka, JP;
Hideaki Horio, Fukuoka, JP;
Taiichi Mori, Fukuoka, JP;
Shohei Inoue, Fukuoka, JP;
Syougo Horinouchi, Fukuoka, JP;
Hideaki Horio, Fukuoka, JP;
Taiichi Mori, Fukuoka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The recording and reproducing apparatus has rotary drive unit (a motor) that rotationally drives a multilayer recordable recording medium; a reference-light-side recording and reproducing lensand a recording-light-side recording and reproducing lensthat are disposed oppositely to the recording mediumwhich is rotationally driven by the rotary drive unit, an address detection lensthat is disposed opposite the recording mediumand that is provided separately from the recording and reproducing lensesand; a light sourcefor recording and reproducing purpose that supplies recording reproduction light to the recording and reproducing lensesand; and the address light sourcethat supplies address light to the address detection lens. The apparatus is configured in such a way that light whose center axis portion is optically hollow is supplied from the reference-light-side recording and reproducing lensto the recording mediumduring reproducing operation.