DE3371432D1 - Optical signal reading device - Google Patents

Optical signal reading device

Info

Publication number
DE3371432D1
DE3371432D1 DE8383306252T DE3371432T DE3371432D1 DE 3371432 D1 DE3371432 D1 DE 3371432D1 DE 8383306252 T DE8383306252 T DE 8383306252T DE 3371432 T DE3371432 T DE 3371432T DE 3371432 D1 DE3371432 D1 DE 3371432D1
Authority
DE
Germany
Prior art keywords
optical signal
reading device
signal reading
optical
signal
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
Application number
DE8383306252T
Other languages
English (en)
Inventor
Kenjiro C O Mitsubishi De Kime
Kazuo C O Mitsubishi Den Okada
Mitsushige C O Mitsubis Kondou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16107986&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3371432(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE3371432D1 publication Critical patent/DE3371432D1/de
Expired legal-status Critical Current

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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • 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
DE8383306252T 1982-10-14 1983-10-14 Optical signal reading device Expired DE3371432D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57181854A JPS5971141A (ja) 1982-10-14 1982-10-14 光学的信号読出し装置

Publications (1)

Publication Number Publication Date
DE3371432D1 true DE3371432D1 (en) 1987-06-11

Family

ID=16107986

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383306252T Expired DE3371432D1 (en) 1982-10-14 1983-10-14 Optical signal reading device

Country Status (4)

Country Link
US (1) US4730899A (de)
EP (1) EP0107461B2 (de)
JP (1) JPS5971141A (de)
DE (1) DE3371432D1 (de)

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US4742506A (en) * 1984-07-12 1988-05-03 Sony Corporation Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion
US4730297A (en) * 1984-09-04 1988-03-08 Matsushita Electric Industrial Co., Ltd. Retardation compensating light beam guiding system in an optical storage medium drive apparatus
DE3524048A1 (de) * 1985-07-05 1987-01-08 Thomson Brandt Gmbh Laser-plattenspieler mit einer schutzblende
EP0225564A3 (en) * 1985-11-30 1988-07-06 Kabushiki Kaisha Toshiba Optical head
EP0228620B1 (de) * 1985-12-10 1991-06-05 Nec Corporation Optischer Kopf mit einem Beugungsgitter zum Richten von zwei oder mehreren gebeugten Lichtstrahlen auf optische Detektoren
US4817074A (en) * 1985-12-19 1989-03-28 Nec Corporation Method and apparatus for detecting the focusing state and positioning accuracy of a light beam directed onto an optical disk tracking guide in an optical recording system
AU600280B2 (en) * 1986-07-02 1990-08-09 Sony Corporation Apparatus for optically recording and reproducing information in record tracks on a rotatable record disc
US4827334A (en) * 1986-08-22 1989-05-02 Electrohome Limited Optical system and method for image sampling in a video projection system
DE3802538A1 (de) * 1987-01-28 1988-08-11 Olympus Optical Co Vorrichtung zum erfassen von fotomagnetischen signalen
US4891799A (en) * 1987-03-13 1990-01-02 Fuji Electrochemical Co., Ltd. Optical head apparatus for writing and reading data on an optical disk having a lens with an inclined optical axis
JPH0731436Y2 (ja) * 1987-12-01 1995-07-19 ティアツク株式会社 光学式ピックアップ装置
KR920010621B1 (ko) * 1988-09-12 1992-12-12 후지쓰 가부시끼가이샤 광학부품용기재와그의제조방법및그를사용한광학제품
JPH02265028A (ja) * 1989-04-06 1990-10-29 Mitsubishi Electric Corp 光記録再生装置
JPH02302941A (ja) * 1989-05-17 1990-12-14 Nikon Corp 光ディスク装置の光ヘッド
JPH0748263B2 (ja) * 1989-06-27 1995-05-24 三菱電機株式会社 光記録再生装置
JP2904422B2 (ja) * 1989-07-19 1999-06-14 パイオニア株式会社 光ヘッド
US5412634A (en) * 1990-02-16 1995-05-02 Deutsche Thomson-Brandt Gmbh Optical scanning device for a disc player including improved focusing apparatus
DE4004858A1 (de) * 1990-02-16 1991-08-22 Thomson Brandt Gmbh Optische abtastvorrichtung
JP2962363B2 (ja) * 1990-04-28 1999-10-12 三菱電機株式会社 光ヘッド
US5293569A (en) * 1990-09-13 1994-03-08 Canon Kabushiki Kaisha Magneto-optical recording/reproducing apparatus including an optical head with an optical element having a plurality of prisms
JP2806293B2 (ja) * 1994-10-06 1998-09-30 松下電器産業株式会社 光ピックアップ及びその製造方法
JPH10501647A (ja) * 1995-03-29 1998-02-10 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 放射線源、検出器及び格子を有する光学ユニットと当該光学ユニットを有する走査装置
US6411573B1 (en) 1998-02-20 2002-06-25 Zen Research (Ireland), Ltd. Multi-beam optical pickup
JP3407679B2 (ja) 1998-03-24 2003-05-19 日本電気株式会社 光ヘッド及び光ヘッドの製造装置
KR101033428B1 (ko) 2003-05-19 2011-05-09 가부시키가이샤 시로쿠 에어리어 이미지 센서를 사용한 위치 검출 장치
US20090042241A1 (en) 2007-04-06 2009-02-12 California Institute Of Technology Microfluidic device
CN105424665B (zh) * 2010-04-15 2019-03-26 洛伊克德克斯有限公司 用于快速确定医学疾病的设备、系统和方法
US20140170678A1 (en) 2012-12-17 2014-06-19 Leukodx Ltd. Kits, compositions and methods for detecting a biological condition
EP2932268A4 (de) 2012-12-17 2016-10-19 Leukodx Ltd Systeme und verfahren zum erkennen eines biologischen zustands
US10610861B2 (en) 2012-12-17 2020-04-07 Accellix Ltd. Systems, compositions and methods for detecting a biological condition
US20180325427A1 (en) * 2015-11-16 2018-11-15 Sharp Kabushiki Kaisha Imaging device, biometric authentication device, and semiconductor laser

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815695A (en) * 1954-10-22 1957-12-10 Eastman Kodak Co Neutral beam splitter
CH465250A (fr) * 1966-10-18 1968-11-15 Genevoise Instr Physique Microscope photoélectrique
GB1407021A (en) * 1972-01-14 1975-09-24 Vickers Ltd Optical devices
NL174591C (nl) * 1973-02-09 1984-07-02 Philips Nv Schijfvormig registratiedragerlichaam.
NL174609C (nl) * 1975-10-15 1984-07-02 Philips Nv Volgspiegelinrichting in een optische platenspeler.
JPS5922289B2 (ja) * 1975-11-20 1984-05-25 ソニー株式会社 ジヨウホウケンシユツソウチ
NL178915C (nl) * 1976-01-16 1986-06-02 Philips Nv Automatisch optisch focusseersysteem.
NL7803969A (nl) * 1978-04-14 1979-10-16 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
JPS6114012Y2 (de) * 1978-06-12 1986-05-01
US4283777A (en) * 1979-05-14 1981-08-11 Xerox Corporation Optical memory having a parallel read out
JPS6220Y2 (de) * 1980-03-31 1987-01-06
NL8005633A (nl) * 1980-10-13 1982-05-03 Philips Nv Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestruktuur.
JPS5788532A (en) * 1980-11-21 1982-06-02 Olympus Optical Co Ltd Recording error detection method in optical type recorder
US4505584A (en) * 1981-01-22 1985-03-19 Olympus Optical Co., Ltd. Method and apparatus for detecting focussing error signal of objective lens
JPS57164455A (en) * 1981-04-02 1982-10-09 Fujitsu Ltd Manufacture of information recording medium
JPS57195634U (de) * 1981-06-05 1982-12-11
JPS5814330A (ja) * 1981-07-17 1983-01-27 Matsushita Electric Ind Co Ltd 光学装置
EP0099123B1 (de) * 1982-07-15 1990-11-28 Matsushita Electric Industrial Co., Ltd. Kopf zum optischen Aufzeichnen und Wiedergeben

Also Published As

Publication number Publication date
US4730899A (en) 1988-03-15
JPS5971141A (ja) 1984-04-21
JPH0544101B2 (de) 1993-07-05
EP0107461A1 (de) 1984-05-02
EP0107461B2 (de) 1995-08-09
EP0107461B1 (de) 1987-05-06

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8320 Willingness to grant licences declared (paragraph 23)