Invention Grant
- Patent Title: Optical recording medium
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Application No.: US14126996Application Date: 2012-06-29
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Publication No.: US08908488B2Publication Date: 2014-12-09
- Inventor: Kensaku Takahashi , Takeshi Miki , Jun Nakano
- Applicant: Kensaku Takahashi , Takeshi Miki , Jun Nakano
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sony Corporation of America
- Priority: JP2011-151196 20110707
- International Application: PCT/JP2012/066648 WO 20120629
- International Announcement: WO2013/005660 WO 20130110
- Main IPC: G11B7/24
- IPC: G11B7/24 ; G11B7/007 ; G11B7/24079

Abstract:
The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1.
Public/Granted literature
- US09007884B2 Optical recording medium Public/Granted day:2015-04-14
Information query
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