FR2601173B1 - Tete de lecture optique pour disques numeriques. - Google Patents
Tete de lecture optique pour disques numeriques.Info
- Publication number
- FR2601173B1 FR2601173B1 FR878709333A FR8709333A FR2601173B1 FR 2601173 B1 FR2601173 B1 FR 2601173B1 FR 878709333 A FR878709333 A FR 878709333A FR 8709333 A FR8709333 A FR 8709333A FR 2601173 B1 FR2601173 B1 FR 2601173B1
- Authority
- FR
- France
- Prior art keywords
- reading head
- optical reading
- digital discs
- discs
- digital
- 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 - Lifetime
Links
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
- G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Automatic Focus Adjustment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61154814A JPS6310326A (ja) | 1986-07-01 | 1986-07-01 | 光ピツクアツプ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2601173A1 FR2601173A1 (fr) | 1988-01-08 |
FR2601173B1 true FR2601173B1 (fr) | 1992-09-04 |
Family
ID=15592460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR878709333A Expired - Lifetime FR2601173B1 (fr) | 1986-07-01 | 1987-07-01 | Tete de lecture optique pour disques numeriques. |
Country Status (3)
Country | Link |
---|---|
US (1) | US4767921A (fr) |
JP (1) | JPS6310326A (fr) |
FR (1) | FR2601173B1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0748268B2 (ja) * | 1988-05-12 | 1995-05-24 | 三菱電機株式会社 | 光ピックアップ装置 |
JPH0677332B2 (ja) * | 1988-05-31 | 1994-09-28 | 株式会社三協精機製作所 | 光ピックアップ |
JPH064412Y2 (ja) * | 1988-07-27 | 1994-02-02 | パイオニア株式会社 | 光ピックアップ装置 |
US5144614A (en) * | 1988-10-29 | 1992-09-01 | Sony Corporation | Optical pickup device |
JP2797345B2 (ja) * | 1988-10-29 | 1998-09-17 | ソニー株式会社 | 光ピックアップ装置及び光ディスク装置 |
JP2682087B2 (ja) * | 1988-11-22 | 1997-11-26 | ソニー株式会社 | 光学ピックアップ装置 |
JP2610995B2 (ja) * | 1989-05-25 | 1997-05-14 | 株式会社ゼクセル | 車両用空調装置 |
US5412634A (en) * | 1990-02-16 | 1995-05-02 | Deutsche Thomson-Brandt Gmbh | Optical scanning device for a disc player including improved focusing apparatus |
US5237556A (en) * | 1991-12-24 | 1993-08-17 | Samsung Electronics Co., Ltd. | Wide beam detector system for optical memories |
EP0749119A3 (fr) * | 1995-05-31 | 1997-08-20 | Daewoo Electronics Co Ltd | Appareil de lecture optique |
JP3456809B2 (ja) * | 1995-10-30 | 2003-10-14 | シャープ株式会社 | 光導波路素子、光導波路素子への結合方法、光ピックアップ装置 |
JP3536914B2 (ja) * | 2000-09-26 | 2004-06-14 | 船井電機株式会社 | ディスクプレーヤーのピックアップ装置 |
JP3528176B2 (ja) * | 2001-01-30 | 2004-05-17 | 船井電機株式会社 | 光ピックアップのハーフミラー固定装置 |
JP2004227657A (ja) * | 2003-01-22 | 2004-08-12 | Sharp Corp | 光ピックアップ装置および光ディスク装置 |
KR100933291B1 (ko) * | 2003-09-20 | 2009-12-22 | 삼성전자주식회사 | 2파장 레이저 다이오드의 사용을 위한 광검출기 |
JP3997324B2 (ja) * | 2004-04-28 | 2007-10-24 | 船井電機株式会社 | 光ピックアップにおける全反射ミラーの取付構造 |
JP2007141362A (ja) * | 2005-11-18 | 2007-06-07 | Funai Electric Co Ltd | 光ヘッド |
US8648999B2 (en) | 2010-07-22 | 2014-02-11 | Cymer, Llc | Alignment of light source focus |
EP3563118A4 (fr) * | 2016-12-28 | 2020-07-08 | Michael Naor | Système de codeur optique et procédé associé |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7703076A (nl) * | 1977-03-22 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager. |
FR2498341A1 (fr) * | 1981-01-20 | 1982-07-23 | Thomson Csf | Dispositif optique detecteur d'ecart de focalisation et enregistreur lecteur optique comportant un tel dispositif |
DE3280137D1 (de) * | 1981-09-17 | 1990-04-19 | Toshiba Kawasaki Kk | Ein optischer kopf. |
JPS59167861A (ja) * | 1983-03-14 | 1984-09-21 | Sony Corp | 光学式デイスク・プレ−ヤ−のトラツキング制御装置 |
NL8400674A (nl) * | 1984-03-02 | 1985-10-01 | Philips Nv | Inrichting voor het inschrijven en/of uitlezen van informatie in een spoor van een reflekterende registratiedrager, met een fokusregeling met verminderde spot offsetgevoeligheid. |
JPS6139942A (ja) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | 光ピツクアツプ |
-
1986
- 1986-07-01 JP JP61154814A patent/JPS6310326A/ja active Pending
-
1987
- 1987-06-30 US US07/068,909 patent/US4767921A/en not_active Expired - Lifetime
- 1987-07-01 FR FR878709333A patent/FR2601173B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6310326A (ja) | 1988-01-16 |
FR2601173A1 (fr) | 1988-01-08 |
US4767921A (en) | 1988-08-30 |
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