KR970050376A - Dual Focus Optical Pick-Up Unit - Google Patents
Dual Focus Optical Pick-Up Unit Download PDFInfo
- 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
Links
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
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)
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) |
-
1995
- 1995-12-30 KR KR1019950067945A patent/KR970050376A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |