KR950015235A - Optical pickup device for double-sided disc playback - Google Patents
Optical pickup device for double-sided disc playback Download PDFInfo
- Publication number
- KR950015235A KR950015235A KR1019930025622A KR930025622A KR950015235A KR 950015235 A KR950015235 A KR 950015235A KR 1019930025622 A KR1019930025622 A KR 1019930025622A KR 930025622 A KR930025622 A KR 930025622A KR 950015235 A KR950015235 A KR 950015235A
- Authority
- KR
- South Korea
- Prior art keywords
- double
- laser beam
- optical device
- sided
- disk
- Prior art date
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- Optical Head (AREA)
Abstract
본 발명은 양면 디스크재생용 광픽업장치에 관한 것으로, 양면 디스크(D)의 양측면상에 기록된 정보를 독출하는 경우에는 레이저 광원(LD)에서 발생된 레이저 비임이 콜리메이트렌즈(20)와 비임스플리터(21)를 통해 제1 및 제2광학장치(22, 27)에 제공되고, 제1광학장치(22)에 제공되는 레이저비임은 회절격자(23)와 직각프리즘(24)을 통과하면서 상기 양면 디스크(D)의 일측면을 향해 지향되며, 그 지향된 레이저비임이 대물렌즈(25)를 통해 상기 양면 디스크(D)의 일측면에 집광되고, 그 양면 디스크(D)로부터 반사되는 반사광은 대물렌즈(25)를 통해 상기 직각프리즘(24)에서 직각방향으로 반사된 다음 회절격자(23)를 거쳐 상기비임스플리터(21)의 반사면에서 수광소자(32)측으로 지향되어 그 수광소자(32)에서 상기 양면 디스크(D)의 일측면으로 부터 반사되어 수광되는 반사광량을 전기적 신호로 검출하게 되고, 상기 양면 디스크(D)의 다른측면상에 기록된 정보를 독출하기 위해 제2광학장치(27)에 제공되는 레이저비임은 전반사미러(26)를 통해 제공되어 회절격자(28)와 직각프리즘(29)을 통과하여 대물렌즈(30)에 의해 상기 양면 디스크(D)의 다른측면상에 집광되고, 그 양면 디스크(D)의 다른 측면으로부터 반사되는 반사광은 제2광학장치(27)를 거쳐 상기 전반사미러(26)를 향해 지향되고, 그 전반사미러(26)를 향해 지향된 반사광은 오목렌즈(31)를 거쳐 상기 수광소자(32)상에 수광되어 상기 양면 디스크(D)의 다른측면에 기록된 정보에 대응하는 전기적 신호를 출력하도록 구성되어 양면 디스크의 정보기록면에 대응하는 이동자재의 제1광학장치와 제2광학장치를 이용하여 양면 디스크의 정보를 재생하여 양면 디스크의 양측면의 재생을 위한 광픽업장치의 억세스시간을 단축하도록 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup device for reproducing a double-sided disc. When reading information recorded on both sides of the double-sided disc (D), the laser beam generated by the laser light source (LD) and the collimated lens (20) The laser beam provided to the first and second optical devices 22 and 27 through the beam splitter 21 and provided to the first optical device 22 passes through the diffraction grating 23 and the rectangular prism 24. The laser beam is directed toward one side of the double-sided disk D, and the directed laser beam is focused on one side of the double-sided disk D through the objective lens 25, and the reflected light is reflected from the double-sided disk D. Is reflected at right angles from the rectangular prism 24 through the objective lens 25 and then directed to the light receiving element 32 side from the reflecting surface of the beam splitter 21 via the diffraction grating 23. 32 is reflected from one side of the double-sided disk (D) and received The amount of reflected light is detected as an electrical signal, and a laser beam provided to the second optical device 27 for reading information recorded on the other side of the double-sided disk D is provided through the total reflection mirror 26. Passed through the diffraction grating 28 and the right-angle prism 29, it is collected by the objective lens 30 on the other side of the double-sided disk (D), and the reflected light reflected from the other side of the double-sided disk (D) is first Reflected light directed through the two optical devices 27 toward the total reflection mirror 26 and directed toward the total reflection mirror 26 is received on the light receiving element 32 via the concave lens 31 so that both surfaces Reproducing information on the double-sided disc using a first optical device and a second optical device of a moving material which are configured to output an electrical signal corresponding to the information recorded on the other side of the disc D and corresponding to the information recording surface of the double-sided disc. Both sides of the double-sided disc The access time of the optical pickup device for reproducing the surface is shortened.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명에 따른 양면 디스크재생용 광픽업장치의 구성을 설명하는 도면.3 is a view for explaining the configuration of an optical pickup apparatus for reproducing a double-sided disc according to the present invention.
제4도는 제3도의 도시된 양면 디스크재생용 광픽업장치의 일예를 나타낸 개략적인 사시도이다.FIG. 4 is a schematic perspective view showing an example of the optical pickup apparatus for reproducing the double-sided disc shown in FIG.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930025622A KR950015235A (en) | 1993-11-29 | 1993-11-29 | Optical pickup device for double-sided disc playback |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930025622A KR950015235A (en) | 1993-11-29 | 1993-11-29 | Optical pickup device for double-sided disc playback |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950015235A true KR950015235A (en) | 1995-06-16 |
Family
ID=66825602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930025622A KR950015235A (en) | 1993-11-29 | 1993-11-29 | Optical pickup device for double-sided disc playback |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950015235A (en) |
-
1993
- 1993-11-29 KR KR1019930025622A patent/KR950015235A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |