ES365387A1 - Optical data recording - Google Patents
Optical data recordingInfo
- Publication number
- ES365387A1 ES365387A1 ES365387A ES365387A ES365387A1 ES 365387 A1 ES365387 A1 ES 365387A1 ES 365387 A ES365387 A ES 365387A ES 365387 A ES365387 A ES 365387A ES 365387 A1 ES365387 A1 ES 365387A1
- Authority
- ES
- Spain
- Prior art keywords
- reference beam
- medium
- data
- original
- redirected
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/042—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern
Landscapes
- Holo Graphy (AREA)
Abstract
A method of holographically recording data comprises bringing together at a recording medium 12 a reference beam 13 and a data beam 10, wherein the transmitted part of the reference beam 15 is redirected through the medium 12 at a location continuing to receive the data beam. The redirected reference beam may be caused to retrace its original path through the medium, or it may return along its original path in the reverse direction. In reconstruction the reference beam follows the same paths as the original reference beam 13 and consequently forms two coincident vertical images at the location of the original object or data source. The transmitted part of the beam 15 may be redirected by a plane mirror 16. If the mirror and reference beam source, laser 14, are interchanged real images are set up. The data record can be used to align optical apparatus by comparing the coincidence of the real or vertical image and the original object. In an alternative embodiment the recording medium is located between a pair of concave mirrors, one of which has an aperture for passage of the reference beam. This beam is caused to re-pass through the medium several times, always from the same side, the number of passes being determined by the resolution of the medium. A further embodiment replaces each concave mirror by two orthogonal reflecting surfaces, the transmitted part of the reference beam repassing the recording medium alternately through opposite sides.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71988068A | 1968-04-09 | 1968-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES365387A1 true ES365387A1 (en) | 1971-01-01 |
Family
ID=24891749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES365387A Expired ES365387A1 (en) | 1968-04-09 | 1969-03-28 | Optical data recording |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE728891A (en) |
| CA (1) | CA918473A (en) |
| CH (1) | CH486711A (en) |
| ES (1) | ES365387A1 (en) |
| FR (1) | FR2005816A1 (en) |
| GB (1) | GB1218331A (en) |
| NL (1) | NL6904042A (en) |
| SE (1) | SE347373B (en) |
-
1969
- 1969-02-25 BE BE728891D patent/BE728891A/xx unknown
- 1969-02-27 FR FR6905500A patent/FR2005816A1/fr not_active Withdrawn
- 1969-03-14 GB GB1345669A patent/GB1218331A/en not_active Expired
- 1969-03-15 NL NL6904042A patent/NL6904042A/xx unknown
- 1969-03-24 CA CA046524A patent/CA918473A/en not_active Expired
- 1969-03-28 ES ES365387A patent/ES365387A1/en not_active Expired
- 1969-04-02 CH CH504969A patent/CH486711A/en not_active IP Right Cessation
- 1969-04-08 SE SE489369A patent/SE347373B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1918031A1 (en) | 1969-10-23 |
| CH486711A (en) | 1970-02-28 |
| NL6904042A (en) | 1969-10-13 |
| DE1918031B2 (en) | 1972-08-03 |
| CA918473A (en) | 1973-01-09 |
| BE728891A (en) | 1969-08-01 |
| GB1218331A (en) | 1971-01-06 |
| FR2005816A1 (en) | 1969-12-19 |
| SE347373B (en) | 1972-07-31 |
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