KR900019211U - 홀로그램 소자를 사용한 박형 레이저 픽업 - Google Patents
홀로그램 소자를 사용한 박형 레이저 픽업Info
- Publication number
- KR900019211U KR900019211U KR2019890005680U KR890005680U KR900019211U KR 900019211 U KR900019211 U KR 900019211U KR 2019890005680 U KR2019890005680 U KR 2019890005680U KR 890005680 U KR890005680 U KR 890005680U KR 900019211 U KR900019211 U KR 900019211U
- Authority
- KR
- South Korea
- Prior art keywords
- hologram elements
- laser pickup
- thin laser
- thin
- pickup
- Prior art date
Links
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/128—Modulators
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/13—Optical detectors therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005680U KR930004021Y1 (ko) | 1989-04-29 | 1989-04-29 | 홀로그램 소자를 사용한 박형 레이저 픽업 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005680U KR930004021Y1 (ko) | 1989-04-29 | 1989-04-29 | 홀로그램 소자를 사용한 박형 레이저 픽업 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900019211U true KR900019211U (ko) | 1990-11-08 |
| KR930004021Y1 KR930004021Y1 (ko) | 1993-06-25 |
Family
ID=19285721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019890005680U KR930004021Y1 (ko) | 1989-04-29 | 1989-04-29 | 홀로그램 소자를 사용한 박형 레이저 픽업 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930004021Y1 (ko) |
-
1989
- 1989-04-29 KR KR2019890005680U patent/KR930004021Y1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930004021Y1 (ko) | 1993-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20010308 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |