KR970071555A

KR970071555A - Integrated optical pick-up device

Info

Publication number: KR970071555A
Application number: KR1019960013022A
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 매체에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업 장치에 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 for 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 투과시켜 대물렌즈로 조사하고, 광정보를 반사시켜 광검출기로 조사하는 투과형 홀로그램소자, 프리즘 상면에 형성되어 입사되는 빔의 P파는 S파로 전환시키는 파장변환부, 프리즘 일측면에 형성되어 포커스에러를 발생시키는 홀로그램격자를 일체로 집적 형성함으로서 조정의 용이성과 경박단소화가 가능토록 한 것이다.A laser diode formed at a central portion of 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 formed on the prism to diffract and transmit the laser beam to the objective lens, And a hologram grating formed on one side surface of the prism and generating a focus error are integrally formed by integrally forming a hologram element that reflects the light beam and irradiates the light beam onto a photodetector, It is easy to adjust and slim and thin.

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 일페형 광 픽-업장치의 구성도, 제3도는 본 발명에 따른 투과형 홀로그램소자의 확대단면도.FIG. 2 is a schematic view of a single-piece optical pick-up apparatus according to the present invention; FIG. 3 is an enlarged sectional view of a transmission-type hologram element according to the present invention;

Claims

An optical pick-up apparatus for condensing a beam using an objective lens (54) as a laser beam to record a signal on a disk (55) and reproducing the recorded information as an electrical signal, characterized in that a plurality of optical elements A laser diode 64 for generating a laser beam of a predetermined wavelength formed on one side of the silicon substrate 61 and a silicon substrate 61 on which the laser diode 64 is formed, The prism 66 is formed in a diagonal direction at a central portion of the prism 66 and diffracts and transmits the laser beam to irradiate the laser beam onto the objective lens 54. The photodetector 64 A wavelength conversion unit 68 formed on the prism 66 for converting the phase light (P wave) of the incident beam to an ideal ray (S wave), a prism 66) and is returned through the disc A holographic grating 67 for generating a focus error in the optical information and a support 62 formed on the other side of the silicon substrate 61. The optical disc 62 is formed at a predetermined position in the inner support 62, And a detector (63).

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