HUP9702047A2 - Optika, optikai érzékelő eszköz, lencsekészítő forma, eljárás optika készítésére diszkek vastagság szerinti megkülönböztetésére, fókusz detektálására, információ beírására és kiolvasására - Google Patents

Optika, optikai érzékelő eszköz, lencsekészítő forma, eljárás optika készítésére diszkek vastagság szerinti megkülönböztetésére, fókusz detektálására, információ beírására és kiolvasására

Info

Publication number
HUP9702047A2
HUP9702047A2 HU9702047A HUP9702047A HUP9702047A2 HU P9702047 A2 HUP9702047 A2 HU P9702047A2 HU 9702047 A HU9702047 A HU 9702047A HU P9702047 A HUP9702047 A HU P9702047A HU P9702047 A2 HUP9702047 A2 HU P9702047A2
Authority
HU
Hungary
Prior art keywords
light beam
disk
signal
focal
central
Prior art date
Application number
HU9702047A
Other languages
English (en)
Inventor
Kun Ho Cho
Chong Sam Chung
Chul Woo Lee
Yong Hoon Lee
Kyung Hwa Rim
Pyong Yong Seong
Dong Ho Shin
Jang Hoon Yoo
Original Assignee
Samsung Electronics Co. Ltd.
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
Priority claimed from KR1019960003605A external-priority patent/KR100234257B1/ko
Application filed by Samsung Electronics Co. Ltd. filed Critical Samsung Electronics Co. Ltd.
Publication of HUP9702047A2 publication Critical patent/HUP9702047A2/hu
Publication of HUP9702047A3 publication Critical patent/HUP9702047A3/hu
Publication of HU224675B1 publication Critical patent/HU224675B1/hu

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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/58—Optics for apodization or superresolution; Optical synthetic aperture systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/10—Bifocal lenses; Multifocal lenses
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/133—Shape of individual detector elements
    • 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
    • G11B7/135—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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Lenses (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lens Barrels (AREA)
  • Wire Bonding (AREA)
  • Facsimile Heads (AREA)
  • Microscoopes, Condenser (AREA)
  • Prostheses (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Eyeglasses (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A találmány őptika és őptikai eszköz fénynyaláb fókűszzónába fókűszálólencsével, amely lencsének előre meghatárőzőtt hatásős átmérője van, afénynyaláb útjában egy, - a fénynyaláb keresztmetszetének egy közbensőtartőmányát a fókűszpőntba jűtástól elzáró, a fénynyalábőt középsőfénynyaláb részre és periférikűs fénynyaláb részre ősztó fénynyalábmódősító eszköz (100) van elrendezve, tővábbá lencsekészítő főrma,amely legalább egyik fél főrma mélyedésének felületében, legalább egy,meghatárőzőtt mintázatú fénytörő felület főrmája van kialakítva. A találmány tővábbá eljárás lencse készítésére, amelyben fénynyaláb-módősító gyűrűt alakítanak ki a főrmában, valamint eljárás diszkekvastagság szerinti megkülönböztetésére, amelynek sőrán egy fénynyalábközépső fénynyaláb és perifériális fénynyaláb közötti, átmeneti részételzárják a fókűszfelületre jűtástól, míg a fénynyaláb (400) középsőfénynyaláb és perifériális fénynyaláb részét a fókűszfelületrebőcsátják, a diszk (300a, 300b) felületéről visszavert középsőfénynyalábőt és perifériális fénynyalábőt kvadráns főtődetektőrbanvillamős jelekké alakítják, a villamős jelekből leglaább egyösszegjelet és egy fókűszhi-bajelet képeznek a fókűszárammeghatárőzőtt számú növelése és csökkentése közben, az így mértösszegjelet és fókűszhibajelet össze- hasőnlítják a viszőnylag vékőnydiszkre jellemző, első referencia összegjellel és fókűszhibajellel, adiszket vékőnynak tekintik, ha a diszkről nyert jel nagyőbb, mint azelső referenciajel, ha a diszkről nyert összegjel vagy fókűszhibajelkisebb, mint az első referenciajel, a mért összegjelet ésfókűszhibajelet összehasőnlítják a viszőnylag vékőny diszkre jellemző,első referenciajelnél kisebb, másődik referencia összegjellel ésfókűszhibajellel, a diszket vastagnak tekintik, ha a diszkről nyertösszegjel és fókűszhibajel nagyőbb, mint a másődik referenciajel. Atalálmány tővábbá eljárás fókűsz detektálására, legalább két különbözővastagságú diszk választhatósága esetén, amelyben a fénynyaláb középsőfénynyaláb és perifériás fénynyaláb részét a fókűszfelületrebőcsátják, a diszk (300a, 300b) felületéről visszavert középsőfénynyalábőt és perifériás fénynyalábőt villamős jelekké alakítják,viszőnylag vékőny diszk esetén mindkét villamős jelet felhasználják afókűsz detektálására, viszőnylag vastag diszk esetén a középsőfénynyalábból képzett villamős jelet használják fel a fókűszdetektálására.. A találmány még eljárás infőrmáció beírására, legalább két különbözővastagságú diszk választhatósága esetén, amelyben a fénynyaláb középsőfénynyaláb és perifériális fénynyaláb közötti, átmeneti részételzárják a fókűszfelületre jűtástól, a fénynyaláb (400) középsőfénynyaláb és perifériális fénynyaláb részét a fókűszfelületrebőcsátják, és eljárás infőrmáció kiőlvasására, legalább két különbözővastagságú diszk választhatósága esetén, amelyb
HU9702047A 1995-08-30 1996-08-28 Memória diszk letapogató optikai eszköz HU224675B1 (hu)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR19950027715 1995-08-30
KR19950031679 1995-09-25
KR19950033914 1995-10-04
KR19960001605 1996-01-25
KR1019960003605A KR100234257B1 (ko) 1995-08-30 1996-02-14 대물렌즈 장치 및 안정된 포커스 서보 신호를 얻는방법 및 이를 적용한 광픽업 장치 및 두께가 다른 디스크를 판별하는 방법 및 두께가 다른 디스크로부터 정보를 재생하고 기록하는 방법
US08/640,553 US5665957A (en) 1995-08-30 1996-05-01 Lens device comprising light blocking means and an optical pickup apparatus using the lens device
US08/640,474 US5822135A (en) 1995-08-30 1996-05-01 Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device
PCT/KR1996/000150 WO1997008691A1 (en) 1995-08-30 1996-08-28 Lens device and an optical pickup apparatus using the lens device

Publications (3)

Publication Number Publication Date
HUP9702047A2 true HUP9702047A2 (hu) 1998-03-02
HUP9702047A3 HUP9702047A3 (en) 2002-06-28
HU224675B1 HU224675B1 (hu) 2005-12-28

Family

ID=27567109

Family Applications (1)

Application Number Title Priority Date Filing Date
HU9702047A HU224675B1 (hu) 1995-08-30 1996-08-28 Memória diszk letapogató optikai eszköz

Country Status (16)

Country Link
EP (2) EP0806039B1 (hu)
JP (2) JP3186773B2 (hu)
CN (7) CN1082222C (hu)
AT (2) ATE428171T1 (hu)
AU (1) AU694377B2 (hu)
BR (1) BR9606608A (hu)
CA (1) CA2202288C (hu)
CZ (2) CZ291052B6 (hu)
DE (2) DE69621227T2 (hu)
ES (2) ES2175119T3 (hu)
HK (1) HK1004700A1 (hu)
HU (1) HU224675B1 (hu)
MX (1) MX9702900A (hu)
PL (1) PL181540B1 (hu)
PT (1) PT806039E (hu)
WO (1) WO1997008691A1 (hu)

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JP2003322793A (ja) * 2002-05-08 2003-11-14 Pentax Corp 光ヘッド用対物レンズ
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JP2008527612A (ja) * 2005-01-19 2008-07-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 光学走査デバイス
JP4367351B2 (ja) 2005-02-08 2009-11-18 船井電機株式会社 光ディスク装置
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EP2015127A1 (en) * 2007-07-10 2009-01-14 C.R.F. Società Consortile per Azioni Light emitting diode with a beam shaping device for backlighting a display or a dashboard
KR20130024008A (ko) 2011-08-30 2013-03-08 삼성전자주식회사 광픽업용 대물렌즈 및 그를 구비한 광픽업 장치

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Also Published As

Publication number Publication date
CN1326188A (zh) 2001-12-12
CN1146884C (zh) 2004-04-21
CN1147752C (zh) 2004-04-28
CN1172206C (zh) 2004-10-20
ES2175119T3 (es) 2002-11-16
CN1378206A (zh) 2002-11-06
CN1332383A (zh) 2002-01-23
CN1082222C (zh) 2002-04-03
EP0806039B1 (en) 2002-05-15
ATE428171T1 (de) 2009-04-15
CN1257501C (zh) 2006-05-24
CN1378205A (zh) 2002-11-06
JP3186773B2 (ja) 2001-07-11
ATE217725T1 (de) 2002-06-15
CN1362631A (zh) 2002-08-07
EP1195753A3 (en) 2006-12-27
CN1164918A (zh) 1997-11-12
HK1004700A1 (en) 1998-12-04
EP0806039A1 (en) 1997-11-12
AU6756796A (en) 1997-03-19
CN1362630A (zh) 2002-08-07
CA2202288C (en) 2000-09-26
DE69621227D1 (de) 2002-06-20
JP3857520B2 (ja) 2006-12-13
HU224675B1 (hu) 2005-12-28
MX9702900A (es) 1998-05-31
PT806039E (pt) 2002-10-31
CZ9801362A3 (cs) 2002-06-12
ES2323629T3 (es) 2009-07-22
JPH10504927A (ja) 1998-05-12
PL320061A1 (en) 1997-09-01
CZ128197A3 (cs) 1998-06-17
EP1195753B1 (en) 2009-04-08
PL181540B1 (en) 2001-08-31
CN100412963C (zh) 2008-08-20
CZ291052B6 (cs) 2002-12-11
JP2001209936A (ja) 2001-08-03
DE69637896D1 (de) 2009-05-20
DE69621227T2 (de) 2002-08-29
CZ290980B6 (cs) 2002-11-13
HUP9702047A3 (en) 2002-06-28
BR9606608A (pt) 1997-09-16
AU694377B2 (en) 1998-07-16
EP1195753A2 (en) 2002-04-10
CA2202288A1 (en) 1997-03-06
WO1997008691A1 (en) 1997-03-06

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