JP3968593B2 - 光ヘッド装置 - Google Patents

光ヘッド装置 Download PDF

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Publication number
JP3968593B2
JP3968593B2 JP2004255817A JP2004255817A JP3968593B2 JP 3968593 B2 JP3968593 B2 JP 3968593B2 JP 2004255817 A JP2004255817 A JP 2004255817A JP 2004255817 A JP2004255817 A JP 2004255817A JP 3968593 B2 JP3968593 B2 JP 3968593B2
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JP
Japan
Prior art keywords
wavelength
light
retardation
plate
broadband
Prior art date
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Expired - Lifetime
Application number
JP2004255817A
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English (en)
Japanese (ja)
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JP2004335108A5 (https=
JP2004335108A (ja
Inventor
弘昌 佐藤
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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.)
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Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP2004255817A priority Critical patent/JP3968593B2/ja
Publication of JP2004335108A publication Critical patent/JP2004335108A/ja
Publication of JP2004335108A5 publication Critical patent/JP2004335108A5/ja
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Publication of JP3968593B2 publication Critical patent/JP3968593B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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JP2004255817A 2004-09-02 2004-09-02 光ヘッド装置 Expired - Lifetime JP3968593B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004255817A JP3968593B2 (ja) 2004-09-02 2004-09-02 光ヘッド装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004255817A JP3968593B2 (ja) 2004-09-02 2004-09-02 光ヘッド装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP27931299A Division JP3671768B2 (ja) 1999-08-26 1999-09-30 光ヘッド装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005196653A Division JP4349335B2 (ja) 2005-07-05 2005-07-05 光ヘッド装置

Publications (3)

Publication Number Publication Date
JP2004335108A JP2004335108A (ja) 2004-11-25
JP2004335108A5 JP2004335108A5 (https=) 2005-07-07
JP3968593B2 true JP3968593B2 (ja) 2007-08-29

Family

ID=33509550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004255817A Expired - Lifetime JP3968593B2 (ja) 2004-09-02 2004-09-02 光ヘッド装置

Country Status (1)

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JP (1) JP3968593B2 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7894321B2 (en) 2005-09-28 2011-02-22 Epson Toyocom Corporation Laminated wave plate and optical pickup using the same
JP5251671B2 (ja) * 2009-03-30 2013-07-31 セイコーエプソン株式会社 積層１／２波長板、光ピックアップ装置、偏光変換素子、及び投写型表示装置

Also Published As

Publication number Publication date
JP2004335108A (ja) 2004-11-25

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