JPH0555937B2 - - Google Patents
Info
- Publication number
- JPH0555937B2 JPH0555937B2 JP57224697A JP22469782A JPH0555937B2 JP H0555937 B2 JPH0555937 B2 JP H0555937B2 JP 57224697 A JP57224697 A JP 57224697A JP 22469782 A JP22469782 A JP 22469782A JP H0555937 B2 JPH0555937 B2 JP H0555937B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- information
- hologram lens
- recording
- light
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Automatic Focus Adjustment (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57224697A JPS59113533A (ja) | 1982-12-20 | 1982-12-20 | 光学式情報読取装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57224697A JPS59113533A (ja) | 1982-12-20 | 1982-12-20 | 光学式情報読取装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59113533A JPS59113533A (ja) | 1984-06-30 |
| JPH0555937B2 true JPH0555937B2 (en, 2012) | 1993-08-18 |
Family
ID=16817818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57224697A Granted JPS59113533A (ja) | 1982-12-20 | 1982-12-20 | 光学式情報読取装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59113533A (en, 2012) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784447A (en) * | 1987-03-13 | 1988-11-15 | International Business Machines Corporation | Holographic objective mirror for optical storage |
| JPH07120478B2 (ja) * | 1989-12-01 | 1995-12-20 | ニッタン株式会社 | 散乱光式煙感知器 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5956236A (ja) * | 1982-09-22 | 1984-03-31 | Canon Inc | 光学ヘツド |
-
1982
- 1982-12-20 JP JP57224697A patent/JPS59113533A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59113533A (ja) | 1984-06-30 |
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