KR950020464A - Pickup device - Google Patents

Pickup device Download PDF

Info

Publication number
KR950020464A
KR950020464A KR1019930026603A KR930026603A KR950020464A KR 950020464 A KR950020464 A KR 950020464A KR 1019930026603 A KR1019930026603 A KR 1019930026603A KR 930026603 A KR930026603 A KR 930026603A KR 950020464 A KR950020464 A KR 950020464A
Authority
KR
South Korea
Prior art keywords
pickup apparatus
polarized beams
spectrometer
reflected light
recording
Prior art date
Application number
KR1019930026603A
Other languages
Korean (ko)
Inventor
이용재
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930026603A priority Critical patent/KR950020464A/en
Publication of KR950020464A publication Critical patent/KR950020464A/en

Links

Landscapes

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

복굴절 물질을 이용한 분광기를 채용하여 신호정보 및 에러정보를 처리하는 픽업 장치가 개시되어 있다. 개시된 복굴절 물질을 이용한 픽업 장치는, 소정의 간격으로 배열된 결정(crystal)축을 갖는 복굴절 물질로 형성된 분광기를 구비하여, 그 분광기에 입사되는 반사광을 수직 편광된 2개의 빔과 수평편광된 2개의 빔으로 만들어서 상기 신호검출부 및 에러검출부로 출력할 수 있어, 광학계 구성을 간단히 할 수 있으며, 검출부의 조립 및 조정을 간단히 할 수 있는 이점을 제공한다.A pickup apparatus employing a spectrometer using a birefringent material to process signal information and error information is disclosed. The pickup apparatus using the disclosed birefringent material includes a spectroscope formed of a birefringent material having a crystal axis arranged at predetermined intervals, so that the reflected light incident on the spectrometer is two vertically polarized beams and two horizontally polarized beams. It can be made and output to the signal detection unit and the error detection unit, it is possible to simplify the configuration of the optical system, and provides an advantage that the assembly and adjustment of the detection unit can be simplified.

Description

픽업 장치Pickup device

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

제4도 내지 제5도는 본 발명에 따른 픽업 장치에 사용된 복굴절 분광기 원리 및 작용을 설명하는 개략적인 구성도이며,4 to 5 are schematic diagrams illustrating the principle and operation of the birefringent spectrometer used in the pickup device according to the present invention,

제6도는 본 발명에 따른 픽업 장치의 일부를 도시한 개략적인 구성도이다.6 is a schematic configuration diagram showing a part of a pickup apparatus according to the present invention.

Claims (3)

광빔을 발생하는 광원과 그 광빔을 기록재생매체에 접속하는 대물렌즈와 그 기록 재생매체로 부터의 반사광을 전기신호로 광전변환하는 광검출기를 가지며, 정보를 기록재생하는 픽업 장치에 있어서, 상기 광검출기 앞의 반사광 경로상에 설치되어, 그 반사광을 수직 편광된 2개의 수직 편광빔과 수평 편광된 2개의 수평 편광빔으로 편광분리시키는 복굴절 분광기를 구비하여 된 것을 특징으로 하는 픽업 장치.A pickup apparatus for recording and reproducing information, comprising: a light source for generating a light beam, an objective lens for connecting the light beam to a recording / reproducing medium, and a photodetector for photoelectric conversion of reflected light from the recording / reproducing medium to an electrical signal, wherein the pickup apparatus records and reproduces information. And a birefringent spectrometer disposed on the reflected light path in front of the detector and polarizing separation of the reflected light into two vertically polarized vertically polarized beams and two horizontally polarized horizontally polarized beams. 제1항에 있어서, 상기 광검출기가 상기 2개의 수평 편광빔과 2개의 수직 편광빔을 각각 수광하고 그 각각으로부터 다른 전기신호를 검출하도록 분할된 복수의 분할 영역을 갖는 것을 특징으로 하는 픽업 장치.The pickup apparatus according to claim 1, wherein the photodetector has a plurality of divided regions divided to receive the two horizontally polarized beams and the two vertically polarized beams, respectively, and detect different electrical signals therefrom. 제1항에 있어서, 상기 복굴절 분광기에서 발생된 광빔에 의해 정보검출이 일방향에서 수행되는 것을 특징으로 하는 픽업 장치.The pickup apparatus according to claim 1, wherein information detection is performed in one direction by a light beam generated by the birefringent spectrometer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930026603A 1993-12-06 1993-12-06 Pickup device KR950020464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930026603A KR950020464A (en) 1993-12-06 1993-12-06 Pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930026603A KR950020464A (en) 1993-12-06 1993-12-06 Pickup device

Publications (1)

Publication Number Publication Date
KR950020464A true KR950020464A (en) 1995-07-24

Family

ID=66826635

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930026603A KR950020464A (en) 1993-12-06 1993-12-06 Pickup device

Country Status (1)

Country Link
KR (1) KR950020464A (en)

Similar Documents

Publication Publication Date Title
KR840004972A (en) Photoelectric Focusing Error Detection Device
KR900012219A (en) Optical pickup
KR910020668A (en) Tracking Control for Light Beam Control
KR840001719A (en) Off-axis Optical Beam Defect Detector
KR970076589A (en) Compensation Method for Laser Non-Point Gap of Optical Pick-up Device
KR880004446A (en) Optical pickup
KR880008258A (en) Optical pickup
TW336311B (en) Method and device for focusing and tracking of an optical head
KR940001078A (en) Optical disc drive unit and optical disc unit
US5570334A (en) Optical pickup with a double refraction polarizing plate to split light beams into two polarized beams
KR950020464A (en) Pickup device
KR0144874B1 (en) Optical pick-up device
KR960005480A (en) Focus error detection device
KR960015433A (en) Optical pickup
KR970003491Y1 (en) Optical pick-up
JPH06231476A (en) Focusing error detector
CA2014163A1 (en) Optical recording and reproducing apparatus
SU1153353A1 (en) Device for reproducing information from disk optic medium
KR960025402A (en) Optical pickup
JPS6095737A (en) Noise eliminating method
JPH05334716A (en) Optical disk recording and reproducing device
KR920010556A (en) Optical pickup head device for optical record reproduction
KR970050348A (en) Optical pickup device for both digital video disc player (DVDP) and compact disc player (CDP)
KR940002795A (en) Optical Disc Pickup Device
FR2244156A1 (en) Optical device for measuring small deformations - uses birefringent phase difference measurements to detect movement

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
WITB Written withdrawal of application