JP2004139728A5 - - Google Patents

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Publication number
JP2004139728A5
JP2004139728A5 JP2003386370A JP2003386370A JP2004139728A5 JP 2004139728 A5 JP2004139728 A5 JP 2004139728A5 JP 2003386370 A JP2003386370 A JP 2003386370A JP 2003386370 A JP2003386370 A JP 2003386370A JP 2004139728 A5 JP2004139728 A5 JP 2004139728A5
Authority
JP
Japan
Prior art keywords
light
group
recording medium
optical recording
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2003386370A
Other languages
English (en)
Japanese (ja)
Other versions
JP2004139728A (ja
JP4059190B2 (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2003386370A priority Critical patent/JP4059190B2/ja
Priority claimed from JP2003386370A external-priority patent/JP4059190B2/ja
Publication of JP2004139728A publication Critical patent/JP2004139728A/ja
Publication of JP2004139728A5 publication Critical patent/JP2004139728A5/ja
Application granted granted Critical
Publication of JP4059190B2 publication Critical patent/JP4059190B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP2003386370A 2003-11-17 2003-11-17 光ヘッド装置 Expired - Fee Related JP4059190B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003386370A JP4059190B2 (ja) 2003-11-17 2003-11-17 光ヘッド装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003386370A JP4059190B2 (ja) 2003-11-17 2003-11-17 光ヘッド装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP32865698A Division JP3662751B2 (ja) 1998-11-18 1998-11-18 光ヘッド装置

Publications (3)

Publication Number Publication Date
JP2004139728A JP2004139728A (ja) 2004-05-13
JP2004139728A5 true JP2004139728A5 (2) 2005-07-07
JP4059190B2 JP4059190B2 (ja) 2008-03-12

Family

ID=32463874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003386370A Expired - Fee Related JP4059190B2 (ja) 2003-11-17 2003-11-17 光ヘッド装置

Country Status (1)

Country Link
JP (1) JP4059190B2 (2)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4613651B2 (ja) * 2005-03-16 2011-01-19 旭硝子株式会社 階段状回折素子および光ヘッド装置
US7778138B2 (en) * 2005-04-22 2010-08-17 Konica Minolta Opto, Inc. Objective optical element for optical pickup device, optical element for optical pickup device, objective optical element unit for optical pickup device and optical pickup device
WO2007020787A1 (ja) * 2005-08-18 2007-02-22 Nec Corporation 光ヘッド装置及び光学式情報記録再生装置
JP5378120B2 (ja) * 2009-09-02 2013-12-25 株式会社日立メディアエレクトロニクス 光ピックアップ装置及びそれを用いた光ディスク装置

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