JP4059190B2 - 光ヘッド装置 - Google Patents

光ヘッド装置 Download PDF

Info

Publication number: JP4059190B2
Authority: JP; Japan
Prior art keywords: light; optical element; order diffracted; hologram optical; receiving unit
Prior art date: 2003-11-17
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.): Expired - Fee Related

Application number

JP2003386370A

Other languages

English (en)

Japanese (ja)

Other versions

JP2004139728A (ja

JP2004139728A5 (de

Inventor

龍一片山

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

NEC Corp

Original Assignee

NEC Corp

Priority date (The priority date 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 date listed.)

2003-11-17

Filing date

2003-11-17

Publication date

2008-03-12

2003-11-17 Application filed by NEC Corp filed Critical NEC Corp

2003-11-17 Priority to JP2003386370A priority Critical patent/JP4059190B2/ja

2004-05-13 Publication of JP2004139728A publication Critical patent/JP2004139728A/ja

2005-07-07 Publication of JP2004139728A5 publication Critical patent/JP2004139728A5/ja

2008-03-12 Application granted granted Critical

2008-03-12 Publication of JP4059190B2 publication Critical patent/JP4059190B2/ja

2018-11-18 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

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Diffracting Gratings Or Hologram Optical Elements (AREA)
Optical Recording Or Reproduction (AREA)
Optical Head (AREA)

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 JP2004139728A5 (de)	2005-07-07
JP4059190B2 true 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 (de)

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
CN100555427C (zh) *	2005-04-22	2009-10-28	柯尼卡美能达精密光学株式会社	光拾取装置及其光学元件、物镜光学元件
US8036092B2 (en)	2005-08-18	2011-10-11	Nec Corporation	Optical head device for detecting an error signal and an optical information recording/reproducing device
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

2003
- 2003-11-17 JP JP2003386370A patent/JP4059190B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JP2004139728A (ja)	2004-05-13

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