US3735031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional image display system
Assignee: RTX Corp
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Filing: 1971-09-14
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Granted: 1973-05-22
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Expires: 1991-09-14
Abstract
Abstract A system for producing a three-dimensional image comprises scanning a deformable thermoplastic material with electrons in accordance with desired holographic information, deforming the thermoplastic material with heat, and illuminating the thermoplastic with monochromatic light. In another embodiment holographic information is impressed by use of coherent IR radiation on the thermoplastic on which a constant spatial charge has been impressed by an electron gun to form a hologram which is then displayed by a visible monochromatic light source.
Inventors
- 👤 J Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:37
CPC Classifications
H; H04; H04N; H04N13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A method for forming a three-dimensional image of an object comprising the steps of scanning a transparent, deformable thermoplastic material with an electron beam to produce an electric charge of constant magnitude on each incremental portion of said thermoplastic material, illuminating the object with a beam from a source of infrared coherent light whereby the wave fronts from said illuminated object also illuminate said thermoplastic material, simultaneously illuminating said thermoplastic material with a reference beam from said source of infrared coherent light wherein a diffraction pattern of infrared light is formed on said thermoplastic material and said thermoplastic material is deformed by said infrared light in accordance with said diffraction pattern, and illuminating said thermoplastic material with a beam of coherent visible light to form a threedimensional image of said object.
Claim 2
Independent Claim
131 words
A method for forming a three-dimensional image of an object comprising the steps of scanning a transparent, deformable thermoplastic material with an electron beam to produce an electric charge of constant magnitude on each incremental portion of said thermoplastic material, illuminating the object with a beam from a source of infrared coherent light whereby the wave fronts from said illuminated object also illuminate said thermoplastic material, simultaneously illuminating said thermoplastic material with a reference beam from said source of infrared coherent light wherein a diffraction pattern of infrared light is formed on said thermoplastic material and said thermoplastic material is deformed by said infrared light in accordance with said diffraction pattern, and illuminating said thermoplastic material with a beam of coherent visible light to form a threedimensional image of said object.
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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 |