KR0144969B1 - 광 픽엎 장치 - Google Patents
광 픽엎 장치Info
- Publication number
- KR0144969B1 KR0144969B1 KR1019930025292A KR930025292A KR0144969B1 KR 0144969 B1 KR0144969 B1 KR 0144969B1 KR 1019930025292 A KR1019930025292 A KR 1019930025292A KR 930025292 A KR930025292 A KR 930025292A KR 0144969 B1 KR0144969 B1 KR 0144969B1
- Authority
- KR
- South Korea
- Prior art keywords
- light
- signal
- optical
- optical pick
- light source
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 6
- 201000009310 astigmatism Diseases 0.000 description 4
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (3)
- 광원과, 이 광원으로 부터 출사된 광을 광자기기록매체의 신호면에 집속하는 집광렌즈와, 상기 신호면으로 부터 반사된 반사광을 수광하여 광전변환하는 광 신호 검출계를 구비하여 된 광 픽엎 장치에 있어서, 상기 광원의 일측에 설치되어 상기 광원으로부터 출사된 광빔의 일부를 상기 신호면으로 반사시키는 동시에 다른 일부는 투과시키는 하프 미러 프리즘과, 상기 하프 미러 프리즘을 투과한 광을 수광하여 그 출력을 기초로 광축편차를 모니터링하는 모니터링 다이오드와, 상기 광원과 상기 집광렌즈 사이에 배치되어 상기 신호면에서 반사되어 오는 광을 회절시키기 위한 홀로그램 렌즈와, 상기 홀로그램 렌즈에 의해 회절된 회절광을 수광하여 그 출력을 기초로 광자기신호를 검출하는 광검출기를 포함하는 것을 특징으로 하는 광 픽엎 장치.
- 제1항에 있어서, 상기 광검출기는 트랙킹 에러(Tracking Error) 신호를 검출하기 위한 2분할 포토다이오드와, 포커스 에러(Focus Error) 신호를 검출하기 위한 좌우동형의 분할 포토다이오드를 포함하는 것을 특징으로 하는 광 픽엎 장치.
- 제1항에 있어서, 상기 홀로그램 렌즈는 0차광 및 (+/-)1차광이 5°이하의 회절각을 갖는 것을 특징으로 하는 광 픽엎 장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930025292A KR0144969B1 (ko) | 1993-11-25 | 1993-11-25 | 광 픽엎 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930025292A KR0144969B1 (ko) | 1993-11-25 | 1993-11-25 | 광 픽엎 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950015245A KR950015245A (ko) | 1995-06-16 |
KR0144969B1 true KR0144969B1 (ko) | 1998-07-15 |
Family
ID=19368941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930025292A KR0144969B1 (ko) | 1993-11-25 | 1993-11-25 | 광 픽엎 장치 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0144969B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100224620B1 (ko) * | 1996-09-24 | 1999-10-15 | 윤종용 | 반사회절광을 이용한 광 파우어 모니터링 장치 |
-
1993
- 1993-11-25 KR KR1019930025292A patent/KR0144969B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950015245A (ko) | 1995-06-16 |
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