Patent US4870485A successfully refreshed from Google Patents.
US4870485A
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Three dimensional image generating apparatus having a phosphor chamber
Assignee: FMC Corp
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Filing: 1988-09-23
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Granted: 1989-09-26
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Expires: 2008-09-23
Abstract
Abstract Three dimensional television viewing apparatus having an image chamber which produces images that can be viewed from a plurality of directions. An imaging phosphor is distributed in a three dimensional chamber. A pair of energy beams are directed by a pair of scanning systems inside the chamber to an intersection where visible light is released from the imaging phosphor. The point of intersection of the two beams is moved inside the chamber to produce a visible three dimensional image.
Inventors
- 👤 Elizabeth A. Downing
- 👤 Bernardo Torres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/388; H04N13/39; G; G02; G02B; G02B30/00; G02B30/50; H04N13/10; H04N13/398
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
Apparatus for generating three dimensional images comprising: a three dimensional chamber; an imaging phosphor distributed through said image chamber; first and second charging sources each emitting a charging energy beam; first, second, third and fourth scanning systems, said first scanning system directing said first charging energy beam into said image chamber from a first side of said image chamber, said second scanning system directing said second charging energy beam into said image chamber from a second side of said image chamber; and first and second triggering sources each emitting a triggering beam, said third scanning system directing said first triggering beam into said image chamber from said first side of said image chamber, said fourth scanning system directing said second triggering beam into said image chamber from said second side of said image chamber, said first and said second charging energy beams and said first and said second triggering energy beams intersecting inside said image chamber and causing said imaging phosphor to release visible light energy at said intersection.
Claim 2
Dependent Claim
169 words
Apparatus for generating three dimensional images comprising: a three dimensional chamber; an imaging phosphor distributed through said image chamber; first and second charging sources each emitting a charging energy beam; first, second, third and fourth scanning systems, said first scanning system directing said first charging energy beam into said image chamber from a first side of said image chamber, said second scanning system directing said second charging energy beam into said image chamber from a second side of said image chamber; and first and second triggering sources each emitting a triggering beam, said third scanning system directing said first triggering beam into said image chamber from said first side of said image chamber, said fourth scanning system directing said second triggering beam into said image chamber from said second side of said image chamber, said first and said second charging energy beams and said first and said second triggering energy beams intersecting inside said image chamber and causing said imaging phosphor to release visible light energy at said intersection.
Claim 3
Dependent Claim
54 words
Apparatus for generating three dimensional images as defined in claim 1 including a selective absorbing filter material, said filter material coating a portion of a surface of said image chamber to prevent said charging energy beams and said triggering energy beams from escaping from said image chamber and causing possible damage to objects nearby.
Claim 4
Dependent Claim
46 words
Apparatus for generating three dimensional images as defined in claim 1 including a control system, and means for connecting said control system to said first, second, third and fourth scanning systems to direct said charging energy beams and said triggering energy beams into said image chamber.
Claim 5
Dependent Claim
28 words
Apparatus for generating three dimensional images as defined in claim 1 wherein said image chamber contains an imaging phosphor having rapid self-discharging, high conversion efficiency, electron trapping properties.
Claim 6
Dependent Claim
27 words
Apparatus for generating three dimensional images as defined in claim 1 wherein said image chamber contains phosphorous particles suspended through an inside portion of said image chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |