GB1106220A - Improvements in or relating to information storage and retrieval - Google Patents
Improvements in or relating to information storage and retrievalInfo
- Publication number
- GB1106220A GB1106220A GB4902565A GB4902565A GB1106220A GB 1106220 A GB1106220 A GB 1106220A GB 4902565 A GB4902565 A GB 4902565A GB 4902565 A GB4902565 A GB 4902565A GB 1106220 A GB1106220 A GB 1106220A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radius
- film
- transparency
- hologram
- plate
- 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
- 230000001427 coherent effect Effects 0.000 abstract 2
- 239000005337 ground glass Substances 0.000 abstract 1
- 230000003287 optical effect 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
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
Abstract
1,106,220. Producing holograms. AMERICAN OPTICAL CO. Nov.18, 1965 [Dec.2, 1964], No.49025/65. Heading G2C. Apparatus for sequentially recording information from a number of transparencies 26, 28, 30, 32, one at a time, on to a single film 22 comprises a coherent light-source 12 emitting a beam 14 which is split by a mirror 16 to produce a reference beam 18 and an object beam 20, the ratio of the reference beam intensity to the object beam intensity being approximately 10:1. The object beam is diffused by a ground glass plate 24 and, after passing through one transparency (e.g. 26) interferes with the beam 18 to form a hologram of the transparency 26 on the photographic plate 22. The transparency 26 is then replaced by another (e.g. 28) in a different plane in space, a hologram of which is also formed on the plate 22. In another embodiment Fig. 3 (not shown) holograms of several opaque objects (46), (48), (50), (52) are formed on the plate (22), but in this case the ratio of the reference beam intensity to the object beam intensity is 1:10, and the objects themselves act as diffusers. Retrieval of the information stored on the film 22 is achieved by illuminating, with coherent light of variable radius wave front Fig. 2 (not shown), the film, the information content of the film then being carried by a beam (40). The radius of the wave front is varied by use of a zoom lens system (36) to produce on a screen (42) only one image at a time, the radius being varied in such a manner that the larger the radius of curvature, the nearer the object, the image of which is seen on the screen (42), to the lightsource 12. The hologram producing systems are arranged so as to give rise to off axis images to prevent "cross-talk" between different images.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41526264A | 1964-12-02 | 1964-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1106220A true GB1106220A (en) | 1968-03-13 |
Family
ID=23644994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4902565A Expired GB1106220A (en) | 1964-12-02 | 1965-11-18 | Improvements in or relating to information storage and retrieval |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1472065B2 (en) |
FR (1) | FR1474776A (en) |
GB (1) | GB1106220A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3743376A (en) * | 1969-03-26 | 1973-07-03 | Rca Corp | Holographic beam coupler |
-
1965
- 1965-11-18 GB GB4902565A patent/GB1106220A/en not_active Expired
- 1965-12-01 FR FR40435A patent/FR1474776A/en not_active Expired
- 1965-12-02 DE DE19651472065 patent/DE1472065B2/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3743376A (en) * | 1969-03-26 | 1973-07-03 | Rca Corp | Holographic beam coupler |
Also Published As
Publication number | Publication date |
---|---|
DE1472065A1 (en) | 1968-12-05 |
DE1472065B2 (en) | 1971-09-16 |
FR1474776A (en) | 1967-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3695744A (en) | Holographic multicolor technique | |
GB1355066A (en) | Optical systems utilising spatial filtering and photographic copying | |
ES341940A1 (en) | Forming a hologram of a subject recorded on an integral photograph with incoherent light | |
GB1338638A (en) | Compact optical display system | |
ES332351A1 (en) | Camera cinematographica estereoscopica. (Machine-translation by Google Translate, not legally binding) | |
GB348123A (en) | Improvements in or relating to projection apparatus | |
GB1005072A (en) | Optical information display apparatus | |
US3128339A (en) | Arrangement for film making and producing a television picture signal | |
GB1278672A (en) | Method of producing stereographic image | |
GB1307609A (en) | Holography | |
ES297039A1 (en) | An optical system for photographic or cinematographic apparatus (Machine-translation by Google Translate, not legally binding) | |
GB1106220A (en) | Improvements in or relating to information storage and retrieval | |
GB1178833A (en) | Improvements in or relating to apparatus for Composing Print | |
US3829210A (en) | Illuminating system of an enlarger | |
GB1266916A (en) | ||
GB1036940A (en) | Improvements relating to information display systems | |
US3542449A (en) | High density holographic information storage and retrieval device | |
GB990930A (en) | Improvements relating to image projectors | |
US1897098A (en) | Motion picture projector | |
US2350786A (en) | Sound reproducing unit for sound films | |
GB1155655A (en) | Photographic Enlarging Apparatus | |
GB1373715A (en) | Optical systems | |
SU603941A1 (en) | Stereoscopic screen | |
SU428229A1 (en) | METHOD OF GENERALIZED SPECTRAL ANALYSIS | |
SU550031A1 (en) | Device for obtaining axonometric |