GB1266428A - - Google Patents
Info
- Publication number
- GB1266428A GB1266428A GB1266428DA GB1266428A GB 1266428 A GB1266428 A GB 1266428A GB 1266428D A GB1266428D A GB 1266428DA GB 1266428 A GB1266428 A GB 1266428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- windows
- photo
- sensitive element
- june
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Abstract
1,266,428. Holographic zone plates. INTERNATIONAL BUSINESS MACHINES CORP. June 2, 1969 [June 6, 1968], No.27723/69. Heading G2J. A holographic zone plate is made by directing coherent light 4 through a partially opaque element 3 having a plurality of relatively transparent circular windows 2, on to a photo-sensitive element, the windows being of such size in relation to the wavelength of the coherent light to scatter the light and the partial opaqueness of the element being such that the amount of light passing through the element is equal to the amount of light passing through the windows whereby a plurality of overlapping interference patterns, one from each window, is produced on the photo-sensitive element, the element then being developed and fixed. The diameters of the windows are smaller than the wavelength of the light. The light may be collimated or convergent 16, Fig.8a. The convergent beam 16 has an angle of convergence such that the non-paraxial and paraxial images are of the same sharpness. A lens may be interposed between the partially opaque element and the photo-sensitive element to reduce background brightening. The zone plate is used to generate multiple images of an object.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681772583 DE1772583A1 (en) | 1968-06-06 | 1968-06-06 | Process for the production of a holographic filter for multiple imaging of an object and filter produced according to this process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1266428A true GB1266428A (en) | 1972-03-08 |
Family
ID=5701315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266428D Expired GB1266428A (en) | 1968-06-06 | 1969-06-02 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5014127B1 (en) |
| DE (1) | DE1772583A1 (en) |
| FR (1) | FR2010227A1 (en) |
| GB (1) | GB1266428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125987A (en) * | 1982-08-13 | 1984-03-14 | Industry The Secretary Of Stat | Improvements in or relating to the manufacture of zone plates |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127876A1 (en) * | 1981-07-15 | 1983-02-03 | Harald 7012 Fellbach Lück | METHOD AND DEVICE FOR STARTING FLUORESCENT LAMPS |
| US5272551A (en) * | 1989-10-03 | 1993-12-21 | Thomson-Csf | Optical system for the reproduction of color video images |
| FR2652656B1 (en) * | 1989-10-03 | 1991-12-06 | Thomson Csf | COLOR VIDEO IMAGE REPRODUCTION SYSTEM. |
-
1968
- 1968-06-06 DE DE19681772583 patent/DE1772583A1/en active Pending
-
1969
- 1969-04-29 FR FR6912334A patent/FR2010227A1/fr not_active Withdrawn
- 1969-06-02 GB GB1266428D patent/GB1266428A/en not_active Expired
- 1969-06-05 JP JP4366769A patent/JPS5014127B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125987A (en) * | 1982-08-13 | 1984-03-14 | Industry The Secretary Of Stat | Improvements in or relating to the manufacture of zone plates |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5014127B1 (en) | 1975-05-26 |
| FR2010227A1 (en) | 1970-02-13 |
| DE1772583A1 (en) | 1971-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |