KR970071556A - Optical pick-up device - Google Patents
Optical pick-up device Download PDFInfo
- Publication number
- KR970071556A KR970071556A KR1019960013023A KR19960013023A KR970071556A KR 970071556 A KR970071556 A KR 970071556A KR 1019960013023 A KR1019960013023 A KR 1019960013023A KR 19960013023 A KR19960013023 A KR 19960013023A KR 970071556 A KR970071556 A KR 970071556A
- Authority
- KR
- South Korea
- Prior art keywords
- laser beam
- transmission region
- objective lens
- optical pick
- reflected
- Prior art date
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
본 발명은 광학 데이타기록 매체에 신호를 기록하고, 그 기록된 정보를 전기신호로 재생시키는 광 픽-업 장치에 관한 것으로서,특히 일반적 음악 재생용 디지탈 오디오 디스크(DAD)와 영상재생용 디지탈 비디오 디스크(DVD)를 동시에 재생할 수있도록 하는 광 픽-업 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally 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, (DVD) can be played back at the same time.
이를 위하여 대물렌즈 빔스플리트 사이에 레이저빔을 전량 반사하는 전(全) 투과영역과 레이저빔을 일정한 비율로 반사 및 투과하는 반(半) 투과 영역에 혼합 형성되어 스포트 사이즈를 조절할 수 있는 빔 조절판(BAP)을 구비하고, 레이저빔이 상기 빔 조절판을 경유할 경우 직경이 1.6㎛와 0.8㎛의 빔 포커스가 동시에 형성되도록 하여 디지탈 오디오 디스크는 물론, 상기 오디오 디스크 보다 기록 용량이 수배 많아 피트의 폭이 현저히 좁은 디지탈 비디오 디스크의 재생이 가능하도록하여 광 픽-업장치의 신뢰성 향상에 기여할 수 있도록 한 것이다.In order to achieve this, a beam control plate (not shown) which is formed by mixing the entire transmission region reflecting the entire laser beam between the objective lens beam splits and the semi-transmission region reflecting and transmitting the laser beam at a constant ratio BAP). When a laser beam passes through the beam control plate, a beam focus of diameters of 1.6 mu m and 0.8 mu m is formed at the same time, so that the recording capacity is several times larger than that of the digital audio disc, It is possible to reproduce a remarkably narrow digital video disk, contributing to the improvement of the reliability of the optical pick-up apparatus.
Description
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 광 픽-업장치의 구성도.FIG. 2 is a configuration diagram of an optical pick-up apparatus according to the present invention; FIG.
Claims (1)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013023A KR970071556A (en) | 1996-04-26 | 1996-04-26 | Optical pick-up device |
US08/847,474 US5917800A (en) | 1996-04-26 | 1997-04-25 | Optical pickup device for reproducing discs of two types with different densities by double beam focuses of different sizes |
JP9109387A JPH1055565A (en) | 1996-04-26 | 1997-04-25 | Optical pickup device |
GB9708508A GB2312549A (en) | 1996-04-26 | 1997-04-25 | Optical pickup device |
CN97113094A CN1167314A (en) | 1996-04-26 | 1997-04-26 | Optical head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013023A KR970071556A (en) | 1996-04-26 | 1996-04-26 | Optical pick-up device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970071556A true KR970071556A (en) | 1997-11-07 |
Family
ID=66216782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960013023A KR970071556A (en) | 1996-04-26 | 1996-04-26 | Optical pick-up device |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970071556A (en) |
-
1996
- 1996-04-26 KR KR1019960013023A patent/KR970071556A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |