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KR970050336A - 광픽업장치 - Google Patents

광픽업장치 Download PDF

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Publication number
KR970050336A
KR970050336A KR1019950062069A KR19950062069A KR970050336A KR 970050336 A KR970050336 A KR 970050336A KR 1019950062069 A KR1019950062069 A KR 1019950062069A KR 19950062069 A KR19950062069 A KR 19950062069A KR 970050336 A KR970050336 A KR 970050336A
Authority
KR
South Korea
Prior art keywords
objective lens
prism
half mirror
laser diode
disk
Prior art date
Application number
KR1019950062069A
Other languages
English (en)
Inventor
김남규
Original Assignee
구자홍
Lg 전자주식회사
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
Application filed by 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019950062069A priority Critical patent/KR970050336A/ko
Priority to JP8348729A priority patent/JPH09190640A/ja
Priority to DE19654388A priority patent/DE19654388A1/de
Publication of KR970050336A publication Critical patent/KR970050336A/ko

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
    • G11B7/1362—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
    • G11B7/1359—Single prisms
    • 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
    • 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
    • G11B7/1372—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

본 발명은 광픽-업장치에 관한 것으로, 광원으로 사용되는 레이저 다이오드와
상기 레이저 다이오드의 빔의 일부를 반사시키는 하프 미러와, 프리즘, 미러, 및 대물렌즈의 기능을 수행하는 프리즘 일체형 대물렌즈와, 디스크의 신호를 감지하는 위한 포토 다이오드로 구성하되, 상기 프리즘 일체형 대물렌즈, 하프 미러, 및 포토 다이오드를 동일 수평선상에 배치하고, 디스크와 하프 미러의 사이에 레이저 다이오드를 배치하여 박형화(薄形化)에 기여하고, 또한 구성의 간소화로 제조원가를 절감시키며, 조립성의 향상으로 제품의 생산성을 향상시키도록 한 것이다.

Description

광픽-업장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 의한 광픽-업장치에 적용되는 프리즘 일체형 대물렌즈의 구성도,
제4도는 본 발명에 의한 광픽-업장치의 구성도,
제5도의 (가) 내지 (라)는 본 발명에 의한 프리즘 일체형 대물렌즈를 보인 것으로, (가)는 평면도, (나)는 좌측면도, (다)는 정면도, (라)는 우측면도.

Claims (3)

  1. 광원으로 사용되는 레이저 다이오드와 상기 레이저 다이오드의 빔의 일부를 반사시키는 하프 미러와, 프리즘, 미러, 및 대물렌즈의 기능을 수행하는 프리즘 일체형 대물렌즈와, 디스크의 신호를 감지하는 위한 포토 다이오드로 구성함을 특징으로 하는 광픽업장치.
  2. 제1항 있어서, 상기 프리즘 일체형 대물렌즈, 하프 미러, 및 포토 다이오드를 동일 수평선상에 배치되고, 디스크와 하프 미러의 사이에 레이저 다이오드를 배치하여 박형화에 기여하도록 구성된 것을 특징으로 하는 광픽업장치.
  3. 제1항 또는 제2항에 있어서, 상기 프리즘 일체형 대물렌즈는, 하프 미러의 대향면에 제1비구면이 형성되고, 디스크의 대향면에 제2비구면이 형성된 것을 특징으로 하는 광픽업장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950062069A 1995-12-28 1995-12-28 광픽업장치 KR970050336A (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950062069A KR970050336A (ko) 1995-12-28 1995-12-28 광픽업장치
JP8348729A JPH09190640A (ja) 1995-12-28 1996-12-26 光ピックアップ装置
DE19654388A DE19654388A1 (de) 1995-12-28 1996-12-27 Optische Abtastvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950062069A KR970050336A (ko) 1995-12-28 1995-12-28 광픽업장치

Publications (1)

Publication Number Publication Date
KR970050336A true KR970050336A (ko) 1997-07-29

Family

ID=19446094

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950062069A KR970050336A (ko) 1995-12-28 1995-12-28 광픽업장치

Country Status (3)

Country Link
JP (1) JPH09190640A (ko)
KR (1) KR970050336A (ko)
DE (1) DE19654388A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100400545B1 (ko) * 2001-03-17 2003-10-08 엘지전자 주식회사 광 기록 및 재생 시스템용 렌즈
US8667671B2 (en) 2009-04-15 2014-03-11 Samsung Techwin Co., Ltd. Vacuum nozzle control apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE364225T1 (de) * 2002-04-09 2007-06-15 Koninkl Philips Electronics Nv Zusammengesetzte objektivlinse mit umlenkungsspiegel
JP2008130116A (ja) * 2006-11-17 2008-06-05 Pentax Corp 光ピックアップ光学系

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3887762T2 (de) * 1987-03-17 1994-09-08 Matsushita Electric Ind Co Ltd Optischer Kopf.
JPS6479944A (en) * 1987-09-22 1989-03-24 Canon Kk Optical pickup device
US5073888A (en) * 1988-04-21 1991-12-17 Ricoh Company, Ltd. Optical pickup device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100400545B1 (ko) * 2001-03-17 2003-10-08 엘지전자 주식회사 광 기록 및 재생 시스템용 렌즈
US8667671B2 (en) 2009-04-15 2014-03-11 Samsung Techwin Co., Ltd. Vacuum nozzle control apparatus

Also Published As

Publication number Publication date
JPH09190640A (ja) 1997-07-22
DE19654388A1 (de) 1997-07-03

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Patent event code: PA01091R01D

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Patent event date: 19951228

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Patent event date: 19980820

Patent event code: PE09021S01D

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Patent event date: 19981030

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Patent event code: PE06011S01I