KR980004512A - Compatible Optical Pickup Device - Google Patents

Compatible Optical Pickup Device Download PDF

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Publication number
KR980004512A
KR980004512A KR1019960020725A KR19960020725A KR980004512A KR 980004512 A KR980004512 A KR 980004512A KR 1019960020725 A KR1019960020725 A KR 1019960020725A KR 19960020725 A KR19960020725 A KR 19960020725A KR 980004512 A KR980004512 A KR 980004512A
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South Korea
Prior art keywords
light
light source
photodetector
objective lens
optical path
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KR1019960020725A
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Korean (ko)
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KR100234261B1 (en
Inventor
이철우
신동호
정종삼
성평용
조건호
최현섭
이용훈
김태경
박노경
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김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960020725A priority Critical patent/KR100234261B1/en
Priority to SG1997001868A priority patent/SG52983A1/en
Priority to US08/869,754 priority patent/US5933401A/en
Priority to NL1006255A priority patent/NL1006255C2/en
Priority to CN97114962A priority patent/CN1093975C/en
Priority to JP9151390A priority patent/JP2818408B2/en
Publication of KR980004512A publication Critical patent/KR980004512A/en
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Publication of KR100234261B1 publication Critical patent/KR100234261B1/en

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    • 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
    • G11B7/12—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
    • 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
    • G11B7/1395—Beam splitters or combiners
    • 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

Abstract

포맷이 다른 디스크 호환형 광픽업장치가 개시되어 있다.Disc compatible optical pickup devices having different formats are disclosed.

이 개시된 장치는 광원과; 이 광원에서 출사된 광을 기록매체의 기록면으로 집속시키는 대물렌즈와; 기록매체에서 반사된 광을 수광하여 정보신호 및 오차신호를 검출하는 광검출기와; 광원과 대물렌즈 사이의 광경로 상에 배치되어 입사되는 광의 진행경로를 변환하는 광경로변환수단을 포함하며, 광원으로 소정 파장영역의 레이저광을 생성 출사하는 제1광원과; 제1광원과 다른 파장영역의 레이저광을 생성 출사하는 제2광원이 구비되고, 광검출기로 제1광에서 출사되고 기록매체와, 광경로변환수단을 경유하여 입사되는 광을 수광하는 제1광검출기와; 제2광원에서 출사되고 기록매체와, 광경로변환수단을 경유하여 입사되는 광을 수광하는 제2광검출기가 구비된 것을 특징으로 한다.This disclosed apparatus includes a light source; An objective lens for focusing the light emitted from the light source onto the recording surface of the recording medium; A photodetector for receiving the light reflected from the recording medium to detect the information signal and the error signal; A first light source disposed on an optical path between the light source and the objective lens, the optical path converting means converting an advancing path of incident light, the first light source generating and emitting laser light of a predetermined wavelength region as a light source; A second light source for generating and emitting laser light in a wavelength region different from the first light source, the first light being emitted from the first light with a photodetector and receiving light incident through the recording medium and the optical path changing means; A detector; And a second photodetector which is emitted from the second light source and receives the recording medium and the incident light via the optical path converting means.

Description

호환형 광픽업장치Compatible Optical Pickup Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명의 제3실시예에 따른 호환형 광픽업장치의 광학적 배치를 보인 개략적인 구성도이다.5 is a schematic diagram showing an optical arrangement of a compatible optical pickup apparatus according to a third embodiment of the present invention.

Claims (12)

광원과; 이 광원에서 출사된 광을 기록매체의 기록면으로 집속시키는 대물렌즈와; 상기 기록매체에서 반사된 광을 수광하여 정보신호 및 오차신호를 검출하는 광검출기와; 상기 광원과 대물렌즈 사이의 광경로 상에 배치되어 입사되는 광의 진행경로를 변환하는 광경로변환수단을 포함하여 된 호환형 광픽업장치에 있어서, 상기 광원으로 소정 파장영역의 레이저광을 생성 출사하는 제1광원과; 상기 제1광원과 다른 파장영역의 레이저광을 생성 출사하는 제2광원이 구비되고, 상기 광검출기로 상기 제1광원에서 출사되고 상기 기록매체와, 상기 광경로변환수단을 경유하여 입사되는 광을 수광하는 제1광검출기와; 상기 제2광원에서 출사되고 상기 기록매체와, 상기 광경로변환수단을 경유하여 입사되는 광을 수광하는 제2광검출기가 구비된 것을 특징으로 하는 호환형 광픽업장치.A light source; An objective lens for focusing the light emitted from the light source onto the recording surface of the recording medium; A photodetector for receiving the light reflected from the recording medium to detect an information signal and an error signal; A compatible optical pickup device comprising optical path conversion means for converting a traveling path of incident light disposed on an optical path between the light source and the objective lens, wherein the light source generates and emits laser light of a predetermined wavelength region. A first light source; A second light source for generating and emitting laser light in a wavelength region different from the first light source is provided. The light detector emits light emitted from the first light source and is incident through the recording medium and the light path converting means. A first photodetector for receiving light; And a second photodetector which is emitted from the second light source and receives a light incident through the recording medium and the optical path converting means. 제1항에 있어서, 상기 광경로변환수단으로 상기 제1광원과 대물렌즈 사이의 광경로 상에 배치되어 상기 제1광원에서 출사된 광을 투과 및/또는 반사시켜 상기 대물렌즈 쪽으로 향하도록 하고, 상기 기록매체 쪽으로 입사되는 광이 상기 제1광검출기로 향하도록 그 진행경로를 변환하는 제1빔스프리터와; 상기 제1빔스프리터와 상기 대물렌즈 사이의 광경로 상에 배치되며, 상기 제2광원에서 출사된 광을 반사시켜 상기 대물렌즈 쪽으로 향하도록하고, 상기 기록매체 쪽으로 입사되는 광을 투과시키는 제2빔스프리터와; 상기 제1빔스프리터와 제2빔스프리터 사이의 광경로 상에 배치되며, 상기 제2광원에서 출사되고 상기 기록매체를 경유하여 상기 제2빔스프리터를 투과한 광이 상기 제2광검출기로 향하도록 광의 진행경로를 변환하는 제3빔스프리터가 구비된 것을 특징으로 하는 호환형 광픽업장치.According to claim 1, wherein the optical path conversion means is disposed on the optical path between the first light source and the objective lens to transmit and / or reflect the light emitted from the first light source toward the objective lens, A first beam splitter for converting a propagation path of the light incident to the recording medium toward the first photodetector; A second beam disposed on an optical path between the first beam splitter and the objective lens and reflecting light emitted from the second light source to be directed toward the objective lens and transmitting light incident to the recording medium; A splitter; Disposed on an optical path between the first beam splitter and the second beam splitter, such that light emitted from the second light source and transmitted through the second beam splitter via the recording medium is directed to the second photodetector; And a third beam splitter for converting a traveling path of light. 제1항에 있어서, 상기 광경로변환수단으로 상기 제1광원과 대물렌즈 사이의 광경로 상에 배치되며, 상기 제1광원에서 출사된 광을 투과 및/또는 반사시켜 상기 대물렌즈 쪽으로 향하도록 하고, 상기 기록매체 쪽에서 입사되는 광이 상기 제1광검출기로 향하도록 그 진행경로를 변환하는 제1빔스프리터와; 상기 제1빔스프리터와 상기 대물렌즈 사이의 광경로 상에 배치되며, 제2광원에서 출사된 광을 반사시켜 상기 대물렌즈 쪽으로 향하도록 하고, 상기 기록매체 쪽에서 입사되는 광을 투과시키는 제2빔스프리터와; 상기 대물렌즈와 상기 제2빔스프리터 사이의 광경로 상에 배치되며, 상기 제1광원 및 제2광원 쪽으로 입사되는 광을 투과시키고, 상기 제2광원에서 출사되고 상기 기록매체에서 반사된 광을 반사시켜 상기 제2광검출기쪽으로 향하도록 광의 진행경로를 변환하는 제3빔스프리터가 구비된 것을 특징으로 하는 호환형 광픽업장치.According to claim 1, wherein the optical path conversion means is disposed on the optical path between the first light source and the objective lens, and transmits and / or reflects the light emitted from the first light source toward the objective lens A first beam splitter for converting a traveling path of the light incident from the recording medium toward the first photodetector; A second beam splitter disposed on an optical path between the first beam splitter and the objective lens and reflecting light emitted from a second light source to be directed toward the objective lens and transmitting light incident from the recording medium; Wow; It is disposed on the optical path between the objective lens and the second beam splitter, and transmits the light incident to the first light source and the second light source, and reflects the light emitted from the second light source and reflected from the recording medium. And a third beam splitter for converting a traveling path of light to be directed toward the second photodetector. 제1항에 있어서 상기 광경로변환수단으로 상기 제1광원과 대물렌즈 사이의 광경로 상에 배치되며, 상기 제1광원에서 출사된 광을 투과 및/또는 반사시켜 상기 대물렌즈 쪽으로 향하도록 하고, 상기 기록매체 쪽에서 입사되는 광이 상기 제1광검출기로 향하도록 그 진행경로를 변환하는 제1빔스프리터와; 상기 제1빔스프리터와 상기 대물렌즈 사이의 광경로 상에 배치되며, 제2광원에서 출사된 광을 반사시켜 상기 대물렌즈 쪽으로 향하도록하고, 상기 기록매체 쪽에서 입사되는 광을 반사시키는 제2빔스프리터와; 상기 제2광원과 상기 제2빔스프리터 사이의 광경로 상에 배치되며, 상기 제2빔스프리터쪽에서 입사되는 광을 투과 및/또는 반사시켜 상기 제2광검출기로 향하도록 안내하는 제3빔스프리터가 구비된 것을 특징으로 하는 호환형 광픽업장치.According to claim 1, It is disposed on the optical path between the first light source and the objective lens by the optical path converting means, and transmits and / or reflects the light emitted from the first light source toward the objective lens, A first beam splitter for converting a traveling path of the light incident from the recording medium toward the first photodetector; A second beam splitter disposed on an optical path between the first beam splitter and the objective lens and reflecting light emitted from a second light source toward the objective lens and reflecting light incident from the recording medium; Wow; A third beam splitter disposed on an optical path between the second light source and the second beam splitter and configured to transmit and / or reflect light incident from the second beam splitter toward the second photodetector; Compatible optical pickup device characterized in that provided. 제1항 내지 제4항중 어느 한 항에 있어서, 상기 제1광원 및 제2광원과 상기 대물렌즈 사이의 광경로 상에 입사되는 발산광을 평행광 또는 평행광에 가까운 광으로 바꾸어주는 콜리메이팅렌즈가 더 구비된 것을 특징으로 하는 호환형 광픽업장치.The collimating lens according to any one of claims 1 to 4, wherein the collimating lens converts the divergent light incident on the optical path between the first and second light sources and the objective lens into parallel light or light close to parallel light. Compatible optical pickup device characterized in that it is further provided. 제5항에 있어서, 상기 제2광원은 상기 콜리메이팅렌즈의 초점거리 이내에 위치되어 상기 제2광원에서 출사되어 상기 콜리메이팅렌즈를 통과한 광이 소정의 발산각을 가진 채로 상기 대물렌즈로 향하도록 된 것을 특징으로 하는 호환형 광픽업장치.6. The method of claim 5, wherein the second light source is located within the focal length of the collimating lens so that the light emitted from the second light source and passed through the collimating lens is directed to the objective lens with a predetermined divergence angle. Compatible optical pickup device characterized in that. 제1항 내지 제4항중 어느 한 항에 있어서, 상기 제1광검출기의 전방 광경로 상에 상기 제1광검출기로 입사되는 광의 초점위치를 조절할 수 있도록 된 제1센서렌즈가 더 구비된 것을 특징으로 하는 호환형 광픽업장치.The first sensor lens of claim 1, further comprising a first sensor lens configured to adjust a focus position of light incident to the first photodetector on a front optical path of the first photodetector. Compatible optical pickup device. 제1항 내지 제4항중 어느 한 항에 있어서, 상기 제2광검출기의 전방 관경로 상에 상기 제2광검출기로 입사되는 광의 초점위치를 조절할 수 있도록 된 제2센서렌즈가 더 구비된 것을 특징으로 하는 호환형 광픽업장치.The second sensor lens of claim 1, further comprising a second sensor lens configured to adjust a focus position of light incident to the second photodetector on a front path of the second photodetector. Compatible optical pickup device. 제1항에 있어서, 상기 제1광원과 제1광검출기는 일체형 제1모듈로 형성된 것을 특징으로 하는 호환형 광픽업장치.The compatible optical pickup apparatus of claim 1, wherein the first light source and the first photodetector are formed as an integrated first module. 제9항에 있어서, 상기 일체형 제1모듈은 상기 제1광원과 상기 제1광검출기가 설치되는 기판과, 상기 제1광원과 상기 제1광검출기를 감싸며 상기 제1광원에서 출사된 광이 통과되는 출사창을 갖는 하우징과, 상기 출사창에 설치되어 상기 제1광원에서 출사되어 상기 대물렌즈 및 기록매체를 경유하여 입사된 광이 상기 제1광검출기로 향하도록 안내하는 홀로그램소자를 포함하는 것을 특징으로 하는 호환형 광픽업장치.The method of claim 9, wherein the integrated first module surrounds the substrate on which the first light source and the first light detector are installed, and the light emitted from the first light source surrounds the first light source and the first light detector. A housing having an exit window, and a hologram element installed in the exit window and guiding the light emitted from the first light source and guided through the objective lens and the recording medium to the first photodetector. Compatible optical pickup device characterized in that. 제1항에 있어서, 상기 제2광원과 제2광검출기는 일체형 제2모듈로 형성된 것을 특징으로 하는 호환형 광픽업장치.The compatible optical pickup apparatus of claim 1, wherein the second light source and the second photodetector are formed as an integrated second module. 제11항에 있어서, 상기 일체형 제2모듈은 상기 제2광원과 상기 제2광검출기가 설치되는 기판과, 상기 제2광원과 상기 제2광검출기를 감싸며 상기 제2광원에서 출사된 광이 통과되는 출사창을 갖는 하우징과, 상기 출사창에 설치되어 상기 제2광원에서 출사되어 상기 대물렌즈 및 기록매체를 경유하여 입사된 광이 상기 제2광검출기로 향하도록 안내하는 홀로그램소자를 포함하는 것을 특징으로 하는 호환형 광픽업장치.The light emitting device of claim 11, wherein the integrated second module surrounds the substrate on which the second light source and the second light detector are installed, and the light emitted from the second light source surrounds the second light source and the second light detector. A housing having an exit window, and a hologram element installed in the exit window and guiding the light emitted from the second light source to guide the light incident through the objective lens and the recording medium toward the second photodetector. Compatible optical pickup device characterized in that. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019960020725A 1996-06-07 1996-06-07 Compatible optical pickup device KR100234261B1 (en)

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KR1019960020725A KR100234261B1 (en) 1996-06-07 1996-06-07 Compatible optical pickup device
SG1997001868A SG52983A1 (en) 1996-06-07 1997-06-02 Optical pickup
US08/869,754 US5933401A (en) 1996-06-07 1997-06-05 Optical pickup having plural optical sources and plural optical detectors
NL1006255A NL1006255C2 (en) 1996-06-07 1997-06-06 Optical pick-up device.
CN97114962A CN1093975C (en) 1996-06-07 1997-06-07 Optical pickup
JP9151390A JP2818408B2 (en) 1996-06-07 1997-06-09 Compatible optical pickup device

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JPH1079138A (en) 1998-03-24
KR100234261B1 (en) 1999-12-15

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