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US3598484A
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Holographic method
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1968-10-25
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Granted: 1971-08-10
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Expires: 1988-10-25
Abstract
Abstract A holographic method of producing a three-dimensional reconstruction of a scene comprises producing a plurality of representations, e.g. positive photographic transparencies, of the scene at a corresponding plurality of viewing angles relative to the scene, e.g. by moving a camera in an arc about a point in the scene, making holograms from the representations on a common photosensitive plate, each hologram being made using a nondiffused object beam directed onto the plate at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto the plate for all the holograms, and forming a reconstruction of the holograms using a reference beam directed at the same constant angle onto the plate. Preferably a divergent reference beam is used in making the holograms and a parallel reference beam is reconstructing the holograms, which allows the reconstruction to be viewed directly, without the need for a converging viewing lens.
Inventors
- 👤 John David Redman
- 👤 William Philip Wolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:01
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/26
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
A holographic method of producing a three-dimensional reconstruction of a scene comprising producing a plurality of representations of the scene at a corresponding plurality of viewing angles relative to the scene, making holograms from said representations on a common photosensitive sheet, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, and forming a reconstruction of said holograms using a reference beam directed at said constant angle onto said sheet.
Claim 2
Dependent Claim
105 words
A holographic method of producing a three-dimensional reconstruction of a scene comprising producing a plurality of representations of the scene at a corresponding plurality of viewing angles relative to the scene, making holograms from said representations on a common photosensitive sheet, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, and forming a reconstruction of said holograms using a reference beam directed at said constant angle onto said sheet.
Claim 3
Dependent Claim
45 words
A method as claimed in claim 1 wherein said plurality of representations is produced at a plurality of locations at a substantially constant distance from a selected point in said scene, said point occupying the same position in the field of view in each representation.
Claim 4
Dependent Claim
27 words
A method as claimed in claim 1 wherein said plurality of representations is produced at a single location using a plurality of viewing angles of the scene.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 1 wherein a divergent reference beam is used in making said holograms.
Claim 6
Dependent Claim
36 words
A method as claimed in claim 4 wherein said reconstruction is formed using a reference beam which is less divergent than the reference beam used in making said holograms, whereby said reconstruction may be viewed directly.
Claim 7
Dependent Claim
17 words
A method as claimed in claim 5 wherein said reference beam used in reconstruction is substantially parallel.
Claim 8
Dependent Claim
19 words
A method as claimed in claim 1 wherein a substantially parallel reference beam is used in making said holograms.
Claim 9
Dependent Claim
28 words
A method as claimed in claim 7 wherein said reconstruction is formed using a substantially parallel reference beam, whereby said reconstruction may be viewed through a converging lens.
Claim 10
Dependent Claim
20 words
A method as claimed in claim 5 wherein said reference beam used in reconstruction is obtained from a mercury lamp.
Claim 11
Dependent Claim
20 words
A method as claimed in claim 1 wherein the representations are photographic transparencies derived from light reflected from the scene.
Claim 12
Dependent Claim
18 words
A method as claimed in claim 1 wherein the representations are derived from radiation transmitted through the scene.
Claim 13
Dependent Claim
61 words
A method as claimed in claim 4 wherein the object beam is also divergent, the reference beam used in making said holograms having greater divergence than the object beam and said reconstruction being formed using a reference beam which is less divergent than the reference beam used in making said holograms, whereby the reconstructed waves converge and may be viewed directly.
Claim 14
Dependent Claim
72 words
A method as claimed in claim 11 wherein the representations are radiographs of an object, each radiograph being produced by locating the object on a linE between a radiographic source and a sheet sensitive to the radiation from said source, and rotating the line, relative to the object, through an angle between the exposures of successive sheets to said radiation, so that each radiograph represents a different angular view through the object.
Claim 15
Dependent Claim
81 words
A translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said reference beam being divergent.
Claim 16
Dependent Claim
81 words
A translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said reference beam being divergent.
Claim 17
Dependent Claim
81 words
A translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said reference beam being parallel.
Claim 18
Dependent Claim
81 words
A translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said reference beam being parallel.
Claim 19
Dependent Claim
163 words
Apparatus for producing a translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said apparatus comprising means for mounting a plurality of transparencies successively in a nondiffused coherent light beam, a rotatable holder for a photosensitive sheet, means for projecting an object beam comprising the image on each transparency onto the sheet held on said rotatable holder, and means for simultaneously projecting a coherent reference beam onto the sheet, said reference-beam-projecting means being so linked to said rotatable holder that as the holder is rotated the angle which the reference beam makes with the sheet remains constant.
Claim 20
Dependent Claim
163 words
Apparatus for producing a translucent sheet having recorded thereon a plurality of holograms produced from a corresponding plurality of representations of a scene at a corresponding plurality of viewing angles relative to the scene, each said hologram being made using a nondiffused object beam directed onto said sheet at an angle corresponding to the viewing angle of the representation from which is made and a reference beam directed at a constant angle onto said sheet for all said holograms, said apparatus comprising means for mounting a plurality of transparencies successively in a nondiffused coherent light beam, a rotatable holder for a photosensitive sheet, means for projecting an object beam comprising the image on each transparency onto the sheet held on said rotatable holder, and means for simultaneously projecting a coherent reference beam onto the sheet, said reference-beam-projecting means being so linked to said rotatable holder that as the holder is rotated the angle which the reference beam makes with the sheet remains constant.
Claim 21
Dependent Claim
18 words
Apparatus as claimed in claim 16 wherein said reference-beam-projecting means is arranged to provide a divergent reference beam.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |