JP5683150B2 - 光ピックアップ対物レンズ及び光ピックアップ装置 - Google Patents
光ピックアップ対物レンズ及び光ピックアップ装置 Download PDFInfo
- Publication number
- JP5683150B2 JP5683150B2 JP2010154943A JP2010154943A JP5683150B2 JP 5683150 B2 JP5683150 B2 JP 5683150B2 JP 2010154943 A JP2010154943 A JP 2010154943A JP 2010154943 A JP2010154943 A JP 2010154943A JP 5683150 B2 JP5683150 B2 JP 5683150B2
- Authority
- JP
- Japan
- Prior art keywords
- optical pickup
- objective lens
- tangent angle
- pickup objective
- spot diameter
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
- G11B7/1367—Stepped phase plates
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Head (AREA)
- Lenses (AREA)
Description
さらに接線角θ(h=1)は下記を満たす事が望ましい。
ここで、
スポット径比=スポット径計算値/スポット径理論値、
スポット径理論値=0.82×λ/NA0、
で定義している。
2 ビームスプリッタ
3 1/4波長板
4 カップリングレンズ
5 絞り
6 光ピックアップ対物レンズ
7 多層ディスク
8 光検出器
9 輪帯
Claims (6)
- 3層以上の複数の情報記録面をもつ光情報記録媒体に情報の記録及び再生を行う光ピックアップ装置に搭載される開口数0.84以上のプラスチック製の光ピックアップ対物レンズであって、当該光ピックアップ対物レンズは少なくとも一面が段差を伴う輪帯形状となっており、前記光ピックアップ対物レンズに、波長が380nm〜430nmの青紫色レーザー光が入射して、接線角θ(h)と近似接線角φと規格化光線高さhとが以下の条件式を満足することを特徴とする光ピックアップ対物レンズ。
- 請求項1ないし4のいずれかの請求項に記載の光ピックアップ対物レンズを搭載していることを特徴とする光ピックアップ装置。
- カバー層厚みが3層以上であり、3個以上の複数の情報記録面を備えた情報記録媒体を記録再生することができる光ピックアップ装置であって、請求項1ないし4のいずれかの請求項に記載の光ピックアップ対物レンズを搭載していることを特徴とする光ピックアップ装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010154943A JP5683150B2 (ja) | 2010-07-07 | 2010-07-07 | 光ピックアップ対物レンズ及び光ピックアップ装置 |
CN201180033357.4A CN102971791B (zh) | 2010-07-07 | 2011-06-17 | 光拾波器物镜和光拾波器装置 |
PCT/JP2011/063962 WO2012005102A1 (ja) | 2010-07-07 | 2011-06-17 | 光ピックアップ対物レンズ及び光ピックアップ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010154943A JP5683150B2 (ja) | 2010-07-07 | 2010-07-07 | 光ピックアップ対物レンズ及び光ピックアップ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012018721A JP2012018721A (ja) | 2012-01-26 |
JP5683150B2 true JP5683150B2 (ja) | 2015-03-11 |
Family
ID=45441088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010154943A Expired - Fee Related JP5683150B2 (ja) | 2010-07-07 | 2010-07-07 | 光ピックアップ対物レンズ及び光ピックアップ装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5683150B2 (ja) |
CN (1) | CN102971791B (ja) |
WO (1) | WO2012005102A1 (ja) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE497239T1 (de) * | 2001-07-11 | 2011-02-15 | Konica Minolta Opto Inc | Optisches korrekturelement für aberration, optisches system, optisches abtastgerät und vorrichtung zur aufzeichnung und wiedergabe |
JP2010080040A (ja) * | 2008-04-10 | 2010-04-08 | Hitachi Maxell Ltd | 光ピックアップ対物レンズ、光ピックアップ装置及び光ディスク装置 |
JP4655136B2 (ja) * | 2008-10-28 | 2011-03-23 | ソニー株式会社 | 対物レンズ、これを用いた光学ピックアップ装置、光記録再生装置及び収差補正方法 |
-
2010
- 2010-07-07 JP JP2010154943A patent/JP5683150B2/ja not_active Expired - Fee Related
-
2011
- 2011-06-17 CN CN201180033357.4A patent/CN102971791B/zh not_active Expired - Fee Related
- 2011-06-17 WO PCT/JP2011/063962 patent/WO2012005102A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2012018721A (ja) | 2012-01-26 |
CN102971791B (zh) | 2015-07-15 |
WO2012005102A1 (ja) | 2012-01-12 |
CN102971791A (zh) | 2013-03-13 |
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