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:
Feb. 10, 2015
Filed:
Oct. 17, 2012
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
Assuming that third-order coma aberration per unit angle generated by tilt of BD () in recording or reproducing information on or from BD () is CMDbd, third-order coma aberration per unit angle generated by tilt of CD () in recording or reproducing information on or from CD () is CMDcd, third-order coma aberration per unit angle generated by tilt of a compatible objective lens () in recording or reproducing information on or from BD () is CMLbd, and third-order coma aberration per unit angle generated by tilt of the compatible objective lens () in recording or reproducing information on or from CD () is CMLcd, a sine condition deviation amount (SCbd) in recording or reproducing information on or from BD () is expressed by CMDbd+CMLbd, a sine condition deviation amount (SCcd) in recording or reproducing information on or from CD () is expressed by CMDcd+CMLcd, and the sine condition deviation amount (SCbd) and the sine condition deviation amount (SCcd) satisfy SCbd>0 and SCcd<0.