DE69215951D1 - Optischer Wiedergabekopf - Google Patents
Optischer WiedergabekopfInfo
- Publication number
- DE69215951D1 DE69215951D1 DE69215951T DE69215951T DE69215951D1 DE 69215951 D1 DE69215951 D1 DE 69215951D1 DE 69215951 T DE69215951 T DE 69215951T DE 69215951 T DE69215951 T DE 69215951T DE 69215951 D1 DE69215951 D1 DE 69215951D1
- Authority
- DE
- Germany
- Prior art keywords
- playback head
- optical playback
- optical
- head
- playback
- 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
- 230000003287 optical effect Effects 0.000 title 1
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
- G11B7/1362—Mirrors
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3085089A JPH04318333A (ja) | 1991-04-17 | 1991-04-17 | 光ヘッド装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69215951D1 true DE69215951D1 (de) | 1997-01-30 |
DE69215951T2 DE69215951T2 (de) | 1997-06-26 |
Family
ID=13848878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69215951T Expired - Lifetime DE69215951T2 (de) | 1991-04-17 | 1992-04-16 | Optischer Wiedergabekopf |
Country Status (5)
Country | Link |
---|---|
US (1) | US5301182A (de) |
EP (1) | EP0509526B1 (de) |
JP (1) | JPH04318333A (de) |
KR (2) | KR920020427A (de) |
DE (1) | DE69215951T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5410468A (en) * | 1992-06-26 | 1995-04-25 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up apparatus |
EP0790606B1 (de) * | 1992-08-07 | 2001-10-24 | Matsushita Electric Industrial Co., Ltd. | Optische Speichervorrichtung |
JP2532818B2 (ja) * | 1993-02-01 | 1996-09-11 | 松下電器産業株式会社 | 対物レンズおよび光ヘッド装置 |
EP0612068B1 (de) * | 1993-02-16 | 2000-05-03 | Nec Corporation | Optischer Abtasthopf und doppelbrechender Beugungsgitterpolarisator sowie Hologrammpolarisator dafür. |
EP0627733B1 (de) * | 1993-06-02 | 2001-02-21 | Matsushita Electric Industrial Co., Ltd. | Optische Kopfvorrichtung und optisches Informationsgerät |
JPH07182687A (ja) * | 1993-12-24 | 1995-07-21 | Sharp Corp | 光ピックアップ |
KR980004433A (ko) * | 1996-06-12 | 1998-03-30 | 구자홍 | 박형 광픽업 장치 |
CN1181537A (zh) * | 1996-09-30 | 1998-05-13 | 大宇电子株式会社 | 袖珍光学拾取*** |
US5939710A (en) * | 1996-09-30 | 1999-08-17 | Daewoo Electronics Co., Ltd. | Optical pickup system incorporating therein a beam splitter having a phase layer |
KR19980029872A (ko) * | 1996-10-28 | 1998-07-25 | 배순훈 | 광 픽-업장치 |
KR100403597B1 (ko) * | 2001-08-30 | 2003-10-30 | 삼성전자주식회사 | 홀로그램이 형성된 빔스프리터를 구비하는 광픽업장치 및이를 이용한 광축보정방법 |
JP3980602B2 (ja) * | 2005-03-02 | 2007-09-26 | シャープ株式会社 | 収差検出装置およびそれを備えた光ピックアップ装置 |
JP2008130128A (ja) * | 2006-11-17 | 2008-06-05 | Funai Electric Co Ltd | 光ピックアップ装置 |
JP2008140484A (ja) * | 2006-12-04 | 2008-06-19 | Funai Electric Co Ltd | 光ピックアップ装置 |
JP4353273B2 (ja) * | 2007-05-15 | 2009-10-28 | ソニー株式会社 | 光照射方法、光記録媒体 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3911230A (en) * | 1970-05-23 | 1975-10-07 | Seiscom Delta Inc | Holographic reproduction of sound |
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
KR900008380B1 (ko) * | 1986-07-01 | 1990-11-17 | 미쓰비시덴기 가부시기 가이샤 | 광학식 헤드장치 |
JPH0752522B2 (ja) * | 1986-10-21 | 1995-06-05 | 三菱電機株式会社 | 光学ヘッド装置 |
JPS63191328A (ja) * | 1987-02-04 | 1988-08-08 | Canon Inc | 光ヘツド装置 |
EP0311340B1 (de) * | 1987-10-05 | 1993-08-04 | Matsushita Electric Industrial Co., Ltd. | Optische Lesekopf |
DE68909663T2 (de) * | 1988-04-26 | 1994-04-07 | Philips Nv | Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers. |
JPH02162541A (ja) * | 1988-12-16 | 1990-06-22 | Hitachi Ltd | 光学式信号再生装置及びそれに用いる光学部品 |
JPH03130939A (ja) * | 1989-07-25 | 1991-06-04 | Olympus Optical Co Ltd | 焦点検出装置 |
US5101389A (en) * | 1989-08-04 | 1992-03-31 | Ricoh Company, Ltd. | Optical information recording/reproducing apparatus |
JPH03125340A (ja) * | 1989-10-09 | 1991-05-28 | Olympus Optical Co Ltd | 光学ヘッド |
JP3109877B2 (ja) * | 1991-11-18 | 2000-11-20 | パイオニア株式会社 | 光学式情報再生装置 |
-
1991
- 1991-04-17 JP JP3085089A patent/JPH04318333A/ja active Pending
-
1992
- 1992-04-16 DE DE69215951T patent/DE69215951T2/de not_active Expired - Lifetime
- 1992-04-16 EP EP92106661A patent/EP0509526B1/de not_active Expired - Lifetime
- 1992-04-16 US US07/868,939 patent/US5301182A/en not_active Expired - Lifetime
- 1992-04-17 KR KR1019920006497A patent/KR920020427A/ko not_active IP Right Cessation
- 1992-04-17 KR KR1019920006497D patent/KR950014835B1/ko active
Also Published As
Publication number | Publication date |
---|---|
JPH04318333A (ja) | 1992-11-09 |
KR950014835B1 (ko) | 1995-12-15 |
KR920020427A (ko) | 1992-11-21 |
DE69215951T2 (de) | 1997-06-26 |
EP0509526A1 (de) | 1992-10-21 |
EP0509526B1 (de) | 1996-12-18 |
US5301182A (en) | 1994-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69210904D1 (de) | Wiedergabeanordnung | |
DE69218637D1 (de) | Wiedergabeanordnung | |
DE69224273D1 (de) | Lesekopf | |
DE69326213D1 (de) | Optischer Abtastkopf | |
DE69230740D1 (de) | Aufzeichnungsgerät | |
DE69317731D1 (de) | Optischer Abtastkopf | |
DE68919599D1 (de) | Optischer Aufnahmekopf. | |
DE69420184D1 (de) | Optisches Aufzeichnungs-/Wiedergabegerät | |
DE69226732D1 (de) | Optisches Aufzeichnungsgerät | |
DE69224635D1 (de) | Optischer prüfkopf | |
DE69433732D1 (de) | Optisches Aufzeichnungs-/Wiedergabegerät | |
DE69128662D1 (de) | Optischer Wiedergabekopf | |
DE69215951D1 (de) | Optischer Wiedergabekopf | |
DE69217800D1 (de) | Optisches Wiedergabegerät | |
DE69322365D1 (de) | Optisches Aufzeichnungsmedium | |
DE69213306D1 (de) | Optisches Aufzeichnungsmedium | |
DE69217836D1 (de) | Optischer Plattenspieler | |
DE69222699D1 (de) | Optische Kopfanordnung | |
DE69024739D1 (de) | Optisches Aufnahme-/Wiedergabegerät | |
DE69222569D1 (de) | Optischer Aufzeichnungsträger | |
DE69210751D1 (de) | Aufzeichnungsgerät | |
DE4293023T1 (de) | Schnellanschluß-Aufnahme | |
DE69318770D1 (de) | Optisches Wiedergabegerät | |
DE69315566D1 (de) | Led-Aufzeichnungskopf | |
DE69220609D1 (de) | Optischer Aufzeichnungsträger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |
|
R071 | Expiry of right |
Ref document number: 509526 Country of ref document: EP |