KR970050376A - Dual Focus Optical Pick-Up Unit - Google Patents

Dual Focus Optical Pick-Up Unit Download PDF

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Publication number
KR970050376A
KR970050376A KR1019950067945A KR19950067945A KR970050376A KR 970050376 A KR970050376 A KR 970050376A KR 1019950067945 A KR1019950067945 A KR 1019950067945A KR 19950067945 A KR19950067945 A KR 19950067945A KR 970050376 A KR970050376 A KR 970050376A
Authority
KR
South Korea
Prior art keywords
laser beam
optical pick
focus optical
dual focus
objective lens
Prior art date
Application number
KR1019950067945A
Other languages
Korean (ko)
Inventor
김기태
Original Assignee
배순훈
대우전자 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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950067945A priority Critical patent/KR970050376A/en
Publication of KR970050376A publication Critical patent/KR970050376A/en

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Abstract

본 발명은 디지탈 디스크 플레이어의 광 픽-업장치에 관한 것으로서, 특히 두께가 1.2mm인 디스크와, 두께가 0.6mm인 디스크에 기록된 정보를 읽어들일 수 있도록 하는 듀얼 포커스 광 픽-업장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pick-up device of a digital disc player, and more particularly, to a dual focus optical pick-up device capable of reading information recorded on a disc having a thickness of 1.2 mm and a disc having a thickness of 0.6 mm. will be.

이를 위하여 홀로그램소자로 부터 발생되는 레이저빔을 대물렌즈로서 집광하여 두께가 서로 다른 제1및 제2디스크의 정보를 읽어들이는 듀얼 포커스 광 픽-업장치에 있어서, 상기 홀로그램소자의 하측에 소정의 기울기로서 설치되어 레이저빔을 소정방향으로 전량 반사하는 제1반사미러, 상기 제1반사미러의 일측에 소정간경을 두고 설치되어 입사되는 레이저빔을 0차, ±1차광으로 분리시켜 상기 대물렌즈로 전량 반사하는 반사형 회절격자로 이루어진 것이다.To this end, a dual focus optical pick-up apparatus for condensing a laser beam generated from a hologram element as an objective lens and reading information of first and second discs having different thicknesses, wherein a predetermined portion is provided below the hologram element. A first reflection mirror which is installed as an inclination and reflects the entire laser beam in a predetermined direction, and is installed with a predetermined distance on one side of the first reflection mirror to separate the incident laser beam into 0 order and ± 1 order light to the objective lens It consists of a reflective diffraction grating that reflects the whole amount.

Description

듀얼 포커스 광 픽-업장치Dual Focus Optical Pick-Up Unit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명 에 따른 광 픽-업장치의 구성도.3 is a block diagram of an optical pick-up apparatus according to the present invention.

Claims (1)

홀로그램소자(61)로 부터 발생되는 레이저빔을 대물렌즈(65)로서 집광하여 두께가 서로 다른 제1및 제2디스크(58)(59)의 정보를 읽어들이는 듀얼 포커스 광 픽-업장치에 있어서, 상기 홀로그램소자(61)의 하측에 소정의 기울기로서 설치되어 레이저빔을 소정방향으로 전량 반사하는 제1반사미러(62), 상기 제1반사미러(62)의 일측에 소정간경을 두고 설치되어 입사되는 레이저빔을 0차, ±1차광으로 분리시켜 상기 대물렌즈(65)로 전량 반사하는 반사형 회절격자(63)로 이루어진 것을 특징으로 하는 듀얼 포커스 광 픽-업장치.In the dual focus optical pick-up apparatus, which collects the laser beam generated from the hologram element 61 as the objective lens 65 and reads the information of the first and second disks 58 and 59 having different thicknesses. In this case, the first reflecting mirror 62 is disposed below the hologram element 61 at a predetermined inclination and reflects the laser beam in a predetermined direction, and is provided with a predetermined gap on one side of the first reflecting mirror 62. And a reflective diffraction grating (63) for totally reflecting the incident laser beam into zero-order, ± first-order light and reflecting the total amount to the objective lens (65). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950067945A 1995-12-30 1995-12-30 Dual Focus Optical Pick-Up Unit KR970050376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950067945A KR970050376A (en) 1995-12-30 1995-12-30 Dual Focus Optical Pick-Up Unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950067945A KR970050376A (en) 1995-12-30 1995-12-30 Dual Focus Optical Pick-Up Unit

Publications (1)

Publication Number Publication Date
KR970050376A true KR970050376A (en) 1997-07-29

Family

ID=66638369

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950067945A KR970050376A (en) 1995-12-30 1995-12-30 Dual Focus Optical Pick-Up Unit

Country Status (1)

Country Link
KR (1) KR970050376A (en)

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