KR970050329A - Dual Focus Optical Pick-Up Unit - Google Patents
Dual Focus Optical Pick-Up Unit Download PDFInfo
- Publication number
- KR970050329A KR970050329A KR1019950054340A KR19950054340A KR970050329A KR 970050329 A KR970050329 A KR 970050329A KR 1019950054340 A KR1019950054340 A KR 1019950054340A KR 19950054340 A KR19950054340 A KR 19950054340A KR 970050329 A KR970050329 A KR 970050329A
- Authority
- KR
- South Korea
- Prior art keywords
- lens
- focus
- optical pick
- dual focus
- focus optical
- Prior art date
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- Optical Head (AREA)
Abstract
본 발명은 디지탈 디스크 플레이어의 듀얼 포커스 광 픽-업장치에 관한 것으로, 특히 두께가 1.2mm인 디스크과, 두께가 0.6mm 인 디스크에 기록된 정보를 읽어들일 수 있도록 하는 디지탈 디스크 플레이어의 듀얼 포커스 광 픽-업장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual focus optical pick-up device of a digital disc player, and more particularly, to a dual focus optical pick of a digital disc player 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. It is about an up device.
이를 위하여 홀로그램소자로부터 발생되는 레이저 빔을 집광하여 두께가 서로 다른 제1 및 제2디스크의 정보를 읽어들이는 듀얼 포커스 광 픽-업장치에 있어서To this end, in the dual focus optical pick-up apparatus for condensing a laser beam generated from the hologram element to read information of the first and second disks having different thicknesses
상기 홀로그램소자와 소정간격을 두고 설치되어 입사빔을 전량 반사하는 반사렌즈, 상기 반사렌즈의 상부에 소정간격을 두고 설치되고, 상기 반사렌즈로부터 조사되는 빔을 집광하여 제2디스크에 포커스를 형성하는 대물렌즈와, 상기 대물렌즈의 외주면에 일체로 형성되어 상기 반사렌즈로부터 조사되는 빔을 투과, 반사 및 집속하여 제1디스크상에 포커스를 형성하는 빔 스프리트로 이루어진 듀얼 포커스렌즈를 구비하여서 된 것이다.A reflection lens installed at a predetermined distance from the hologram element and reflecting the entire incident beam, and installed at an upper portion of the reflection lens, and focusing a beam irradiated from the reflection lens to form a focus on a second disk; And a dual focus lens formed integrally with an objective lens and with an outer circumferential surface of the objective lens and configured to transmit, reflect, and focus a beam irradiated from the reflective lens to form a focus on the first disk.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제3도는 본 발명에 따른 광 픽-업장치의 구성도.3 is a block diagram of an optical pick-up apparatus according to the present invention.
제4도는 본 발명에 따른 듀얼 포커스렌즈의 단면도.4 is a cross-sectional view of a dual focus lens according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950054340A KR970050329A (en) | 1995-12-22 | 1995-12-22 | Dual Focus Optical Pick-Up Unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950054340A KR970050329A (en) | 1995-12-22 | 1995-12-22 | Dual Focus Optical Pick-Up Unit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970050329A true KR970050329A (en) | 1997-07-29 |
Family
ID=66617367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950054340A KR970050329A (en) | 1995-12-22 | 1995-12-22 | Dual Focus Optical Pick-Up Unit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970050329A (en) |
-
1995
- 1995-12-22 KR KR1019950054340A patent/KR970050329A/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 |