GB1450174A - Composite holograms and method of recording same - Google Patents
Composite holograms and method of recording sameInfo
- Publication number
- GB1450174A GB1450174A GB4383073A GB4383073A GB1450174A GB 1450174 A GB1450174 A GB 1450174A GB 4383073 A GB4383073 A GB 4383073A GB 4383073 A GB4383073 A GB 4383073A GB 1450174 A GB1450174 A GB 1450174A
- Authority
- GB
- United Kingdom
- Prior art keywords
- recording medium
- beams
- sept
- light
- smaller
- 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
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
- 230000010363 phase shift Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
Abstract
1450174 Holograms HITACHI LTD 18 Sept 1973 [19 Sept 1972 19 Feb 1973] 43830/73 Heading G2J A method of forming a composite hologram from a plurality of two dimensional images which may be coloured of a three dimensional object taken from different directions in which a respective hologram is made on a separate area of a common holographic recording medium from each photograph in turn comprises the following steps which are repeated for each such photographic image. (1) Producing a collinated object light beam and focusing it through the image to an area of recording medium. (2) Spatially filtering the beam by a mask having non-light and light transmitting portions which convert the beam into a regular array of smaller beams each of which passes through an associated light transmitting mask portion to converge towards an associated part of the recording medium. (3) Imparting different phase shifts to the separate beams, the shift imparted to each smaller beam being constant for that beam and the phase relationship between adjacent beams being pre-selected in accordance with a random sequence.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9403272A JPS4952650A (en) | 1972-09-19 | 1972-09-19 | |
| JP48019879A JPS49109047A (en) | 1973-02-19 | 1973-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1450174A true GB1450174A (en) | 1976-09-22 |
Family
ID=26356750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4383073A Expired GB1450174A (en) | 1972-09-19 | 1973-09-18 | Composite holograms and method of recording same |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2346970A1 (en) |
| FR (1) | FR2200539B1 (en) |
| GB (1) | GB1450174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028974A (en) * | 2019-12-06 | 2020-04-17 | 上海理工大学 | Novel method and system for classifying and screening micro particles by array vortex light beams |
-
1973
- 1973-09-18 DE DE19732346970 patent/DE2346970A1/en active Pending
- 1973-09-18 GB GB4383073A patent/GB1450174A/en not_active Expired
- 1973-09-18 FR FR7333495A patent/FR2200539B1/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028974A (en) * | 2019-12-06 | 2020-04-17 | 上海理工大学 | Novel method and system for classifying and screening micro particles by array vortex light beams |
| CN111028974B (en) * | 2019-12-06 | 2023-04-07 | 上海理工大学 | Novel method and system for classifying and screening micro particles by array vortex light beams |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2346970A1 (en) | 1974-03-28 |
| FR2200539A1 (en) | 1974-04-19 |
| FR2200539B1 (en) | 1977-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19930917 |