KR970071514A

KR970071514A - Integrated optical pick-up device

Info

Publication number: KR970071514A
Application number: KR1019960013013A
Authority: KR
Inventors: 최양오
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1996-04-26
Filing date: 1996-04-26
Publication date: 1997-11-07

Abstract

본 발명은 광학 데이타기록 매채에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업장치에 관한 것으로서, 특히 다수의 광학소자를 일체로 집적형성하여 조립 및 조정의 용이성과 경박단소화에 기여할 수 있도록 하는 일체형 광 픽-업장치에 관한 것이다.The present invention relates to an optical pick-up apparatus for recording a signal on an optical data recording medium and reproducing the recorded information as an electric signal. In particular, a large number of optical elements are integrally formed and integrated, So as to contribute to the shortening of the optical pick-up apparatus.

이를 위하여 실리콘기판 일측 중앙부에 형성된 레이저 다이오드, 지지체 내부 소정위치에 일체로 형성되어 디스크의 광정보를 검출하는 광검출기, 프리즘 내부에 형성되어 레이저빔을 회절 및 투과하고, 광정보를 반사시켜 광검출기로 조사하는 투과형 홀로그램소자, 프리즘 상면에 형성되어 입사되는 빔의 P파는 S파로 전환시키는 파장변화부, 프리즘 일측면에 형성되어 비점수차를 발생시키는 제1프레즈넬렌즈, 실리콘기판의 상부에 설치되고, 상기 다수의 광학소자를 밀폐시키며 디스크상에 빔을 집광하여 기록된 정보를 읽는 제2프레즈넬렌즈가 형성된 케이스를 일체로 집적형성함으로서 조정의 용이성과 경박단소화가 가능하여 광 픽-업장치의 소형화가 가능할 수 있도록 한 것이다.A laser diode formed at a central portion of the silicon substrate at one side of the silicon substrate, a photodetector integrally formed at a predetermined position in the support to detect optical information of the disk, a diffraction grating for transmitting and diffracting the laser beam, A first Fresnel lens formed on one side of the prism to generate astigmatism, and a second Fresnel lens formed on one side of the prism to generate astigmatism. A case in which a plurality of optical elements are sealed and a case in which a second Fresnel lens for reading recorded information is condensed on a disc is integrally formed to facilitate the adjustment and reduce the thickness of the optical pickup, So that miniaturization can be achieved.

Description

Integrated optical pick-up device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명에 따른 일체형 광 픽-업장치의 구성도.FIG. 2 is a configuration diagram of an integrated optical pick-up apparatus according to the present invention; FIG.

Claims

A optical pick-up apparatus for condensing a laser beam to record a signal on a disk (55) and reproduce the recorded information as an electrical signal, comprising: a silicon substrate (61) on which a plurality of optical elements are placed; A laser diode 64 formed on one side of the silicon substrate 61 to generate a laser beam of a predetermined wavelength and a prism 63 formed in a predetermined size on the silicon substrate 61 on which the laser diode 64 is formed to transmit a laser beam, A transmissive hologram element 65 which is formed in a diagonal direction at a central portion of the prism 66 to diffract and transmit the laser beam to irradiate the laser beam onto the disk and reflect the returning light information, A wavelength conversion unit 68 formed on one side of the prism 66 for converting an upper ray of the incident beam into an ideal ray and an extra ray of light into an upper ray of light, A support 62 formed on the other side of the silicon substrate 61 and a second fresnel lens 67 formed at a predetermined position in the support 62 for generating the astigmatism for the transmissive hologram element 65. [ A case 69 formed on the silicon substrate 61 to seal the plurality of optical elements, a case 69 formed on the case 69 for sealing the optical elements, And a second Fresnel lens (70) formed on a predetermined portion of the disk (55) to form a beam focus on the disk (55).

※ Note: It is disclosed by the contents of the first application.