FR2202304B1 - - Google Patents
Info
- Publication number
- FR2202304B1 FR2202304B1 FR7335369A FR7335369A FR2202304B1 FR 2202304 B1 FR2202304 B1 FR 2202304B1 FR 7335369 A FR7335369 A FR 7335369A FR 7335369 A FR7335369 A FR 7335369A FR 2202304 B1 FR2202304 B1 FR 2202304B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10001972A JPS5127549B2 (US06878557-20050412-C00065.png) | 1972-10-04 | 1972-10-04 | |
| JP10211572A JPS5147630B2 (US06878557-20050412-C00065.png) | 1972-10-11 | 1972-10-11 | |
| JP47102920A JPS5925222B2 (ja) | 1972-10-13 | 1972-10-13 | ホログラフイツクスリツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2202304A1 FR2202304A1 (US06878557-20050412-C00065.png) | 1974-05-03 |
| FR2202304B1 true FR2202304B1 (US06878557-20050412-C00065.png) | 1976-12-10 |
Family
ID=27309118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7335369A Expired FR2202304B1 (US06878557-20050412-C00065.png) | 1972-10-04 | 1973-10-03 |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA999458A (US06878557-20050412-C00065.png) |
| FR (1) | FR2202304B1 (US06878557-20050412-C00065.png) |
| GB (1) | GB1451083A (US06878557-20050412-C00065.png) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567305A (en) * | 1966-10-18 | 1971-03-02 | Bell Telephone Labor Inc | Hologram masking techniques |
-
1973
- 1973-10-03 CA CA182,586A patent/CA999458A/en not_active Expired
- 1973-10-03 FR FR7335369A patent/FR2202304B1/fr not_active Expired
- 1973-10-03 GB GB4613473A patent/GB1451083A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1451083A (en) | 1976-09-29 |
| FR2202304A1 (US06878557-20050412-C00065.png) | 1974-05-03 |
| CA999458A (en) | 1976-11-09 |
| DE2349727A1 (de) | 1974-04-11 |
| DE2349727B2 (de) | 1975-11-27 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |