KR980004428A - CD / DVD optical pickup - Google Patents
CD / DVD optical pickup Download PDFInfo
- Publication number
- KR980004428A KR980004428A KR1019960020761A KR19960020761A KR980004428A KR 980004428 A KR980004428 A KR 980004428A KR 1019960020761 A KR1019960020761 A KR 1019960020761A KR 19960020761 A KR19960020761 A KR 19960020761A KR 980004428 A KR980004428 A KR 980004428A
- Authority
- KR
- South Korea
- Prior art keywords
- dvd
- optical pickup
- optical
- pickup device
- polarizing plate
- Prior art date
Links
Landscapes
- Optical Head (AREA)
Abstract
본 발명은 CD와 DVD겸용 광픽업장치에 있어서 광학계의 레이저 다이오드와 대물렌즈 사이의 광로상에 유리기관위로 환상의 띠형상 편광물질이 코팅된 편광판을 설치하여 CD와 DVD를 겸용으로 재생할수 있도록한 CD/DVD겸용 광픽업 장치에 관한것이다.In the optical pickup device for both CD and DVD, a polarizing plate coated with an annular band-shaped polarizing material is installed on a glass engine on an optical path between an optical laser diode and an objective lens, so that the CD and DVD can be reproduced in combination. It relates to a CD / DVD combined optical pickup device.
본 발명은 CD/DVD겸용 광픽업 장치에 있어서, 유리기판에 편광물질을 기느다란 환상의 띠형태로 코팅하여 CD디스크의 재생시에는 상기 환상 띠의 안쪽영역의 빔을 메인빔으로 하여 신호를 재생함에 있어 환상 띠영역을 통과하는 빔의 회절이 일어나도록하어 메인빔에 근접하는 주변빔을 약화시킴으로써 구면수차를 감소시키고 DVD재생시에는 상기 편광판의 전체영역을 통과하는 빔을 이용하여 신호를 재생하도록 구성되어 있다.The present invention provides a CD / DVD combined optical pick-up device, wherein a glass substrate is coated in a ring shape with an annular strip holding a polarizing material to reproduce a signal using a beam in the inner region of the annular band as a main beam during CD disc playback. It is configured to reduce the spherical aberration by weakening the peripheral beams close to the main beam to cause diffraction of the beam passing through the annular band region, and to reproduce the signal using the beam passing through the entire region of the polarizing plate during DVD playback. have.
본 발명은 CD/DVD겸용 재생장치의 광학계에 단순한 광학소자로서의 편광판을 부가적으로 구성함에의해서 CD와 DVD의 재생이 가능하도록 함으로써 CD/DVD겸용 광픽업 장치의 간호화 및 박형화를 이룰수 있는 이점이 있다.The present invention has the advantage that the CD and DVD combined optical pickup device can be made thinner and thinner by additionally configuring a polarizing plate as a simple optical element in the optical system of the combined playback device for CD / DVD. have.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제6a도는 본 발명의 편광판에 대한 정면도.6A is a front view of the polarizing plate of the present invention.
제6b도는 본 발명의 편광판에 대한 단면도.6b is a cross-sectional view of the polarizing plate of the present invention.
제7도는 본 발명의 편광판을 이용한 CD/DVD겸용 광픽업 장치의 요부 구성도.7 is a main configuration diagram of a CD / DVD combined optical pickup device using the polarizing plate of the present invention.
제8도는 본 발명의 편광판을 이용한 CD/DVD겸용 광픽업 장치의 다른 실시예에 대한 요부 구성도.8 is a main configuration diagram of another embodiment of the CD / DVD combined optical pickup apparatus using the polarizing plate of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960020761A KR980004428A (en) | 1996-06-11 | 1996-06-11 | CD / DVD optical pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960020761A KR980004428A (en) | 1996-06-11 | 1996-06-11 | CD / DVD optical pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR980004428A true KR980004428A (en) | 1998-03-30 |
Family
ID=66284250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960020761A KR980004428A (en) | 1996-06-11 | 1996-06-11 | CD / DVD optical pickup |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR980004428A (en) |
-
1996
- 1996-06-11 KR KR1019960020761A patent/KR980004428A/en not_active Application Discontinuation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |