JP2001023239A5 - - Google Patents

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Publication number
JP2001023239A5
JP2001023239A5 JP1999196526A JP19652699A JP2001023239A5 JP 2001023239 A5 JP2001023239 A5 JP 2001023239A5 JP 1999196526 A JP1999196526 A JP 1999196526A JP 19652699 A JP19652699 A JP 19652699A JP 2001023239 A5 JP2001023239 A5 JP 2001023239A5
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JP
Japan
Prior art keywords
thickness
refractive index
film
air layer
incident angle
Prior art date
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Granted
Application number
JP1999196526A
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English (en)
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JP2001023239A (ja
JP4207315B2 (ja
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Publication date
Application filed filed Critical
Priority to JP19652699A priority Critical patent/JP4207315B2/ja
Priority claimed from JP19652699A external-priority patent/JP4207315B2/ja
Priority to US09/731,771 priority patent/US6683846B2/en
Publication of JP2001023239A publication Critical patent/JP2001023239A/ja
Publication of JP2001023239A5 publication Critical patent/JP2001023239A5/ja
Application granted granted Critical
Publication of JP4207315B2 publication Critical patent/JP4207315B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

図４に、空気膜９を屈折率（ｎ）が１の薄膜として考え、屈折率（ｎ）が１．８の光学部品により、空気層９の厚さｔを介した場合の第１の誘電体膜５の反射率の入射角度依存性の計算結果を示す。空気層９の厚さを例えば５０ｎｍとすると、無反射コーティングにより、入射角が５０degまでの光線に対して、第１の誘電体膜５の反射率は、いずれも１０％以下になる。この結果によれば、この情報記録ディスクにおいては、結合効率が高くなっているとともに、空気層の厚さの変化に対して、結合効率の変化が緩やかであることがわかる。
JP19652699A 1999-07-09 1999-07-09 情報記録ディスク Expired - Fee Related JP4207315B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19652699A JP4207315B2 (ja) 1999-07-09 1999-07-09 情報記録ディスク
US09/731,771 US6683846B2 (en) 1999-07-09 2000-12-08 Information recording disc having an anti-reflection layer and information recording/reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19652699A JP4207315B2 (ja) 1999-07-09 1999-07-09 情報記録ディスク

Publications (3)

Publication Number Publication Date
JP2001023239A JP2001023239A (ja) 2001-01-26
JP2001023239A5 true JP2001023239A5 (ja) 2006-04-27
JP4207315B2 JP4207315B2 (ja) 2009-01-14

Family

ID=16359213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19652699A Expired - Fee Related JP4207315B2 (ja) 1999-07-09 1999-07-09 情報記録ディスク

Country Status (2)

Country Link
US (1) US6683846B2 (ja)
JP (1) JP4207315B2 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4269471B2 (ja) * 2000-02-21 2009-05-27 ソニー株式会社 光記録媒体、光ピックアップおよび光記録再生装置
JP4631212B2 (ja) * 2000-05-26 2011-02-16 東ソー株式会社 表面再生型光記録媒体
US7058000B2 (en) * 2000-12-08 2006-06-06 Sony Corporation Information recording disc having an anti-reflection layer and information recording/reproducing apparatus
TW569210B (en) * 2001-03-14 2004-01-01 Sony Corp Optical disc
JP3668189B2 (ja) * 2001-12-27 2005-07-06 富士通株式会社 光学ヘッドおよび光情報処理装置
JP3791509B2 (ja) * 2002-06-28 2006-06-28 ソニー株式会社 光再生装置及び光再生方法
JP2008135127A (ja) * 2006-11-29 2008-06-12 Konica Minolta Opto Inc 光学素子及び光ピックアップ装置
WO2009150855A1 (ja) * 2008-06-13 2009-12-17 パナソニック株式会社 情報記録媒体とそれを用いた記録再生方法
JP4661953B2 (ja) * 2008-12-04 2011-03-30 ソニー株式会社 光記録媒体およびその製造方法
JP5603938B2 (ja) * 2010-06-21 2014-10-08 パナソニック株式会社 対物レンズ、光学ヘッド、光ディスク装置及び情報処理装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231751A (ja) * 1983-06-14 1984-12-26 Canon Inc 光記録媒体
KR0172861B1 (ko) * 1990-08-03 1999-04-15 이헌조 광자기 디스크구조
US6033535A (en) * 1990-08-28 2000-03-07 Matsushita Electric Industrial Co., Ltd. Optical information recording disk and method for manufacturing the same
KR100230529B1 (ko) * 1990-11-05 1999-11-15 가나이 쓰도무 광디스크 장치 및 광헤드
US5251202A (en) * 1991-05-23 1993-10-05 Ricoh Company, Ltd. Optical information recording medium having multi-layered structures for preventing undesired reflection and electric charging
US5637411A (en) * 1991-07-29 1997-06-10 Hitachi Maxell, Ltd. Magneto-optical recording medium and process for producing the same
JPH09326136A (ja) * 1996-06-05 1997-12-16 Sony Corp 光記録媒体及びその製造方法
TW497094B (en) * 1997-08-07 2002-08-01 Hitachi Maxell Optical recording medium and optical recording device
JPH11149664A (ja) * 1997-11-19 1999-06-02 Sharp Corp 光ディスク

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