GB1373011A - Production of holograms - Google Patents
Production of hologramsInfo
- Publication number
- GB1373011A GB1373011A GB354571A GB354571A GB1373011A GB 1373011 A GB1373011 A GB 1373011A GB 354571 A GB354571 A GB 354571A GB 354571 A GB354571 A GB 354571A GB 1373011 A GB1373011 A GB 1373011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rays
- diffracted
- undiffracted
- light
- prism
- 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
- 230000010287 polarization Effects 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000001093 holography Methods 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
- G03H1/04—Processes or apparatus for producing holograms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
Abstract
1373011 Holography VICKERS Ltd 26 Jan 1972 [29 Jan 1971] 3545/71 Heading G2J Holograms are formed from a light beam which has passed through an object to provide diffracted and undiffracted rays, these sets of rays then being separated and caused to interfere to form the hologram. In one embodiment the undiffracted light rays passing object P-P' are focussed at a point 6 on a prism 5 whereas the light rays diffracted by the object are not so focussed. Both rays pass through a linear polarizer 4 before reaching the prism. The undiffracted light rays are reflected from point 6 by total reflection whereas the diffracted light rays are reflected from a metallic layer 7 (e.g. aluminium). The prism elliptically polarizes both rays which then pass #/4 plate 8 which linearly polarizes them but with different azimuthal angles. A Wollaston prism 9 has one of its vibration directions parallel to the direction of linear polarization of the diffracted rays. Consequently of the two output beams only one contains the diffracted rays whereas both contain undiffracted rays. The two beams are then brought into mutually parallel linear polarization by an analyzer 10 and then interfere to form hologram H-H'. If desired the prism 5 and #/4 plate 8 can be replaced by a polarizing film sandwiched between two glass plates and having an aperture through which the undiffracted rays pass. In a second embodiment the diffracted and undiffracted rays from object P-P' enter a conventional beam splitter 32. The undiffracted rays in one of the light paths are brought to a focus at a pin-hole aperture in a stop 35. In that path the stop blocks off the diffracted rays. The other path contains both diffracted and non- diffracted rays. Light from both paths is then caused to interfere to form the hologram H-H'. If desired the beam-splitter 32 and stop 35 can be replaced by a reflector having a small localized beam-splitting region at which the undiffracted rays are brought to a focus. The diffracted rays would not be incident on this region and so would be subjected to reflection only. The hologram may be formed from objects viewed in microscopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB354571A GB1373011A (en) | 1972-01-26 | 1972-01-26 | Production of holograms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB354571A GB1373011A (en) | 1972-01-26 | 1972-01-26 | Production of holograms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1373011A true GB1373011A (en) | 1974-11-06 |
Family
ID=9760365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB354571A Expired GB1373011A (en) | 1972-01-26 | 1972-01-26 | Production of holograms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1373011A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986004997A1 (en) * | 1985-02-25 | 1986-08-28 | Keith Gardner | Interferometers |
| EP0291184A2 (en) * | 1987-04-21 | 1988-11-17 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Optical devices for holographic recording |
-
1972
- 1972-01-26 GB GB354571A patent/GB1373011A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986004997A1 (en) * | 1985-02-25 | 1986-08-28 | Keith Gardner | Interferometers |
| EP0193381A1 (en) * | 1985-02-25 | 1986-09-03 | Plasmon Data Systems, Inc. | Interferometer |
| US4802736A (en) * | 1985-02-25 | 1989-02-07 | Plasmon Data Systems, N.V. | Interferometers |
| EP0291184A2 (en) * | 1987-04-21 | 1988-11-17 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Optical devices for holographic recording |
| EP0291184A3 (en) * | 1987-04-21 | 1991-03-06 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Optical devices for holographic recording |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |