US3734618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making stereoscopic photographs
Assignee: DUDLEY OPTICAL LABOR Inc
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Filing: 1970-08-24
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Granted: 1973-05-22
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Expires: 1990-08-24
Abstract
Abstract Improved methods and systems are provided for producing stereoscopic photographs which exhibit optical characteristics resembling those of a hologram in that a photograph is produced by the methods of the invention the aspect of the recorded threedimensional image changes with change of viewpoint about both horizontal and vertical axes. The photograph produced in accordance with the methods of the present invention may be appropriately termed an ''''integram'''' or an ''''integraph,'''' and it possesses important advantages over the hologram. For example, coherent light, such as laser illumination, is not required for producing or viewing the photograph, the photographic equipment required to produce the photograph is compact and simple to operate, and exposure times for producing the photograph correspond to those which would be required for ordinary twodimensional photography under the same conditions.
Inventors
- 👤 L Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/18; G03B35/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
205 words
A method of making copies on the emulsion surface of a photographic material from photographs of a type comprising a transparent support having a number of small, similarly shaped, juxtaposed pictorial elements oriented in a space-filling array on said support, attainment of said space-filling orientation being accomplished by providing said pictorial elements with a square or hexagonal peripheral shape such that there are no significant spaces between adjacent elements and there is no significant overlapping of adjacent elements, and by providing a lenticular screen comprising an array of lenticules having substantially spherical curvature and having a square or hexagonal peripheral shape corresponding with that of the pictorial elements, the orientation of the screen lenticules also corresponding with that of the pictorial elements, and there being no significant spaces between the peripheries of adjacent screen lenticules; said method comprising the following steps: placing the emulsion surface of the transparent support of the original transparent photograph in contact with the emulsion surface of the photographic material on which the copy is to be made; admitting printing light through the spherically lenticulated surface of the aforesaid transparent photograph; processing a resulting copy photograph; and applying the spherically lenticulated screen to the emulsion surface of the resulting copy photograph.
Claim 2
Independent Claim
205 words
A method of making copies on the emulsion surface of a photographic material from photographs of a type comprising a transparent support having a number of small, similarly shaped, juxtaposed pictorial elements oriented in a space-filling array on said support, attainment of said space-filling orientation being accomplished by providing said pictorial elements with a square or hexagonal peripheral shape such that there are no significant spaces between adjacent elements and there is no significant overlapping of adjacent elements, and by providing a lenticular screen comprising an array of lenticules having substantially spherical curvature and having a square or hexagonal peripheral shape corresponding with that of the pictorial elements, the orientation of the screen lenticules also corresponding with that of the pictorial elements, and there being no significant spaces between the peripheries of adjacent screen lenticules; said method comprising the following steps: placing the emulsion surface of the transparent support of the original transparent photograph in contact with the emulsion surface of the photographic material on which the copy is to be made; admitting printing light through the spherically lenticulated surface of the aforesaid transparent photograph; processing a resulting copy photograph; and applying the spherically lenticulated screen to the emulsion surface of the resulting copy photograph.
Claim 3
Dependent Claim
52 words
The method set forth in claim 1, in which the printing light is transmitted to the lenticulated surface of the original transparent photograph by way of an optical system comprising a lens and aperture plate having the same optical characteristics as the lens and aperture plate used in recording the original photograph.
References Cited (Backward Citations)
US1987113A
Cited
US1935471A
Cited
US1918705A
Cited
US2072396A
Cited
US2174003A
Cited
US3503315A
Cited
US3535993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |