DE3680865D1 - Optischer kopf. - Google Patents
Optischer kopf.Info
- Publication number
- DE3680865D1 DE3680865D1 DE8686114853T DE3680865T DE3680865D1 DE 3680865 D1 DE3680865 D1 DE 3680865D1 DE 8686114853 T DE8686114853 T DE 8686114853T DE 3680865 T DE3680865 T DE 3680865T DE 3680865 D1 DE3680865 D1 DE 3680865D1
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- optical
- head
- 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
- G11B7/12—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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60254483A JPS62112246A (ja) | 1985-11-11 | 1985-11-11 | ピツクアツプ装置 |
JP60285960A JPS62145545A (ja) | 1985-12-18 | 1985-12-18 | ピツクアツプ装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3680865D1 true DE3680865D1 (de) | 1991-09-19 |
Family
ID=26541700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686114853T Expired - Lifetime DE3680865D1 (de) | 1985-11-11 | 1986-10-25 | Optischer kopf. |
Country Status (3)
Country | Link |
---|---|
US (2) | US4849825A (de) |
EP (1) | EP0222238B2 (de) |
DE (1) | DE3680865D1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794585A (en) * | 1986-05-06 | 1988-12-27 | Lee Wai Hon | Optical head having a hologram lens and polarizers for use with magneto-optic medium |
JPH0770065B2 (ja) * | 1988-04-20 | 1995-07-31 | シャープ株式会社 | 光ピックアップ装置 |
JPH01311428A (ja) * | 1988-06-09 | 1989-12-15 | Matsushita Electric Ind Co Ltd | 光ヘッド装置及びこれを用いた光情報装置 |
US5161148A (en) * | 1988-08-05 | 1992-11-03 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up using wavelength guide with grating coupler therein |
JPH083910B2 (ja) * | 1989-01-13 | 1996-01-17 | シャープ株式会社 | 光ピックアップ装置 |
FR2646245B1 (fr) * | 1989-04-25 | 1991-06-14 | Thomson Csf | Dispositif de lecture optique pour support d'enregistrement optique |
JPH035935A (ja) * | 1989-06-02 | 1991-01-11 | Hitachi Cable Ltd | 光ヘッドの焦点ずれ検出方式 |
DE69128808T2 (de) * | 1990-04-12 | 1998-07-23 | Matsushita Electric Ind Co Ltd | Optischer Kopf mit hologrammverbundener Objektivlinse |
JP3072767B2 (ja) * | 1990-07-24 | 2000-08-07 | パイオニア株式会社 | 光学式ディスクプレーヤ |
US5361244A (en) * | 1991-04-10 | 1994-11-01 | Hitachi, Ltd. | Optical head and information recording apparatus |
JP3366676B2 (ja) * | 1993-02-15 | 2003-01-14 | 松下電器産業株式会社 | 光学ヘッド |
JPH06314438A (ja) * | 1993-03-05 | 1994-11-08 | Olympus Optical Co Ltd | 光学ヘッド |
JPH06309685A (ja) * | 1993-04-26 | 1994-11-04 | Nippon Conlux Co Ltd | 光学式情報記録再生装置のレーザ出力制御装置 |
KR100230227B1 (ko) * | 1993-04-30 | 1999-11-15 | 윤종용 | 광픽업 |
US5694385A (en) * | 1993-09-24 | 1997-12-02 | Ricoh Comany, Ltd. | Optical pickup apparatus |
ES2177309T3 (es) | 1998-03-10 | 2002-12-01 | Qinetiq Ltd | Sistema tridimensional de formacion de imagenes. |
GB2353392A (en) * | 1999-08-18 | 2001-02-21 | Secr Defence | Imaging system suitable for use in multi-layer optical data storage applications |
US6577658B1 (en) | 1999-09-20 | 2003-06-10 | E20 Corporation, Inc. | Method and apparatus for planar index guided vertical cavity surface emitting lasers |
JP2001307376A (ja) | 2000-02-17 | 2001-11-02 | Sharp Corp | 光記録媒体及びピックアップ装置 |
JP5588310B2 (ja) * | 2009-11-15 | 2014-09-10 | プライムセンス リミテッド | ビームモニタ付き光学プロジェクタ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3680945A (en) * | 1970-10-23 | 1972-08-01 | Xerox Corp | Fabrication of refractive blazed holograms |
AR205243A1 (es) * | 1972-05-11 | 1976-04-21 | Philips Nv | Aparato para la lectura de un portador de grabacion reflector plano |
JPS55101922A (en) * | 1979-01-31 | 1980-08-04 | Canon Inc | Light splitter |
JPS6049977B2 (ja) * | 1980-04-23 | 1985-11-06 | 松下電器産業株式会社 | 光デイスク装置 |
JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
JP2539350B2 (ja) * | 1983-12-16 | 1996-10-02 | 株式会社日立製作所 | 光ヘツド装置 |
US4733065A (en) * | 1984-06-27 | 1988-03-22 | Canon Kabushiki Kaisha | Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom |
NL8502835A (nl) * | 1985-10-17 | 1987-05-18 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
KR910002322B1 (ko) * | 1986-09-20 | 1991-04-11 | 후지쓰 가부시끼가이샤 | 회절격자렌즈 조립체를 구비하고 있는 광학시스템 |
JPH0622065B2 (ja) * | 1987-02-25 | 1994-03-23 | 株式会社日立製作所 | 集積型光ヘツド |
-
1986
- 1986-10-25 DE DE8686114853T patent/DE3680865D1/de not_active Expired - Lifetime
- 1986-10-25 EP EP86114853A patent/EP0222238B2/de not_active Expired - Lifetime
- 1986-11-10 US US06/928,395 patent/US4849825A/en not_active Expired - Lifetime
-
1989
- 1989-03-30 US US07/330,429 patent/US5050155A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0222238A3 (en) | 1988-06-08 |
EP0222238B1 (de) | 1991-08-14 |
EP0222238A2 (de) | 1987-05-20 |
US5050155A (en) | 1991-09-17 |
EP0222238B2 (de) | 1998-02-11 |
US4849825A (en) | 1989-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8363 | Opposition against the patent | ||
8380 | Miscellaneous part iii |
Free format text: IM HEFT 37/92, SEITE 10387, SP.1: DIE VEROEFFENTLICHUNG IST ZU STREICHEN |
|
8366 | Restricted maintained after opposition proceedings |