KR980004435A - CD / DVD optical pickup - Google Patents

CD / DVD optical pickup Download PDF

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Publication number
KR980004435A
KR980004435A KR1019960020978A KR19960020978A KR980004435A KR 980004435 A KR980004435 A KR 980004435A KR 1019960020978 A KR1019960020978 A KR 1019960020978A KR 19960020978 A KR19960020978 A KR 19960020978A KR 980004435 A KR980004435 A KR 980004435A
Authority
KR
South Korea
Prior art keywords
optical
optical pickup
dvd
present
laser diode
Prior art date
Application number
KR1019960020978A
Other languages
Korean (ko)
Inventor
김진용
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019960020978A priority Critical patent/KR980004435A/en
Publication of KR980004435A publication Critical patent/KR980004435A/en

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Abstract

본 발명은 CD와 DVD 겸용 광픽업 장치에 있어서, 광학계의 레이저 다이오드와 대물렌즈 사이의 광로상에 형성되는 광학부품의 수를 줄여서 장치의 간소화가 이루어질 수 있도록 한 CD/DVD 겸용 광픽업 장치에 관한 것이다.The present invention relates to a CD and DVD combined optical pickup apparatus, wherein the apparatus can be simplified by reducing the number of optical components formed on the optical path between the laser diode and the objective lens of the optical system. will be.

본 발명에 CD/DVD 겸용 광픽업 장치에 있어서, 레이저 다이오드와 대물렌즈 사이의 광경로상에 설치되는 LC의 일측 유리기판에 에칭을 이용하여 그레이팅 패턴을 형성함으로써 종래의 광학부품의 하나로 사용되던 회절격자의 사용을 배제토록한 구성이다.In the optical pickup device for CD / DVD combined use according to the present invention, a diffraction pattern used by one of the conventional optical parts is formed by forming a grating pattern by etching on a glass substrate on one side of the LC provided on the optical path between the laser diode and the objective lens. It is a configuration to exclude the use of a grid.

본 발명은 CD/DVD 겸용 광픽업 장치의 광학부품 수 감소를 통해서 장치의 제조비용의 절감 및 조립성의 개선을 도모할 수 있다.The present invention can reduce the manufacturing cost and improve the assemblability of the device by reducing the number of optical parts of the optical pickup device combined with CD / DVD.

Description

CD/DVD 겸용 픽업의 잡광제거 장치CD / DVD pickup pickup

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도의 (a)(b)는 본 발명의 그레이팅 패턴이 형성된 LC에 대한 종단면도.(A) (b) of FIG. 5 is a longitudinal cross-sectional view of the LC in which the grating pattern of this invention was formed.

제6도는 본 발명의 그레이팅 패턴이 형성된 LC에 대한 다른 실시예 구조를 보인 종단면도.Figure 6 is a longitudinal cross-sectional view showing another embodiment structure for LC with grating pattern of the present invention.

제7도는 본 발명의 LC를 포함하는 광픽업 장치의 광학계 구성도.7 is an optical system configuration of an optical pickup device including the LC of the present invention.

Claims (1)

레이저 다이오드와 대물렌즈 사이의 광 경로상에 회절격자, 시준렌즈, LC, 빔분리 프리즘 및 편광판이 배열된 광학계를 포함하는 CD/DVD 겸용 광픽업 장치에 있어서, 회절격자의 설치를 생략한 채 LC의 일측 유리기판상에 에칭으로 그레이팅 패턴을 형성함을 특징으로 하는 CD/DVD 겸용 광픽업 장치.A CD / DVD optical pickup apparatus comprising an optical system in which a diffraction grating, a collimating lens, an LC, a beam separation prism, and a polarizing plate are arranged on an optical path between a laser diode and an objective lens, wherein the LC without the installation of the diffraction grating is omitted. CD and DVD combined optical pickup device characterized in that to form a grating pattern by etching on one side of the glass substrate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960020978A 1996-06-12 1996-06-12 CD / DVD optical pickup KR980004435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960020978A KR980004435A (en) 1996-06-12 1996-06-12 CD / DVD optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960020978A KR980004435A (en) 1996-06-12 1996-06-12 CD / DVD optical pickup

Publications (1)

Publication Number Publication Date
KR980004435A true KR980004435A (en) 1998-03-30

Family

ID=66284232

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960020978A KR980004435A (en) 1996-06-12 1996-06-12 CD / DVD optical pickup

Country Status (1)

Country Link
KR (1) KR980004435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100421354B1 (en) * 1996-07-26 2004-06-10 엘지전자 주식회사 Optical pickup device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100421354B1 (en) * 1996-07-26 2004-06-10 엘지전자 주식회사 Optical pickup device

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E601 Decision to refuse application