US3878329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthoscopic image tube
Assignee: TDK Micronas GmbH
•
Filing: 1973-08-22
•
Granted: 1975-04-15
•
Expires: 1993-08-22
Abstract
Abstract A cathode-ray tube arrangement for presenting third dimensional effects without the use of special glasses and without mechanical motion. The device combines the features of integral photography with a unique set of electron optics duplicating the action of the ''''fly''s eye'''' lens array looking at a moving point of light. A mosaic of tiny pictures is generated at the phosphor plane, and these are carried forward to the focal plane of the lens array through a fiber-optic face plate. These multiple pictures represent the light rays from a point of light as some position in the image space. The electron beam within the tube acts in a manner equivalent to the source of light for the picture mosaic. Ordinary deflection and focusing circuits are used to provide for shifting the image of the point of light very rapidly, and beam intensity modulating means are used to produce a complex flickerfree three-dimensional presentation in the image space.
Inventors
- 👤 Kenneth A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:21
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/22; H01J29/00; H01J29/46; H01J29/80; H04; H04N; H04N13/00; H04N13/30; H04N13/302; H04N13/305; H04N13/31; H04N13/307
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
165 words
A cathode ray orthoscopic image display device for forming three dimensional presentations from programmed X, Y and Z signals, comprising: an evacuated enclosure; means within said enclosure for producing an electron beam of relatively large cross-section; a phosphor screen along a transparent predetermined portion of the inside surface of said enclosure; deflection means for causing said electron beam to scan over at least a portion of the surface of said phosphor screen; a fly''s eye lens array adjacent and substantially parallel to the viewing surface of said phosphor screen; and an aperture lens array comprising an apertured plate adjacent and parallel to sAid phosphor screen within said enclosure, said plate containing a plurality of apertures each substantially aligned with a corresponding lenslet within said fly''s eye lens array on the opposite side of said phosphor screen; and means for effecting dynamic focus control whereby the point of crossover from convergence to divergence of said electron beam may be controlled in accordance with said Z signal.
Claim 2
Dependent Claim
165 words
A cathode ray orthoscopic image display device for forming three dimensional presentations from programmed X, Y and Z signals, comprising: an evacuated enclosure; means within said enclosure for producing an electron beam of relatively large cross-section; a phosphor screen along a transparent predetermined portion of the inside surface of said enclosure; deflection means for causing said electron beam to scan over at least a portion of the surface of said phosphor screen; a fly''s eye lens array adjacent and substantially parallel to the viewing surface of said phosphor screen; and an aperture lens array comprising an apertured plate adjacent and parallel to sAid phosphor screen within said enclosure, said plate containing a plurality of apertures each substantially aligned with a corresponding lenslet within said fly''s eye lens array on the opposite side of said phosphor screen; and means for effecting dynamic focus control whereby the point of crossover from convergence to divergence of said electron beam may be controlled in accordance with said Z signal.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 including a fiber optic plate between said fly''s eye lens array and said phosphor screen.
Claim 4
Dependent Claim
78 words
Apparatus according to claim 1 in which said fly''s eye lens array is defined as having a very short focal length for each lenslet thereof, and in which a fiber optic faceplate is provided as the portion of said enclosure between said phosphor screen and said fly''s eye lens array whereby the picture mosaic on said phosphor is optically projected intact substantially to the outside surface of said faceplate substantially in contact with said fly''s eye lens array.
Claim 5
Dependent Claim
45 words
Apparatus according to claim 1 in which said means for effecting dynamic focus control comprises an electromagnetic focus coil, and means are included for converting said programmed Z signals to instantaneous focus coil current values, whereby said electron beam crossover point is correspondingly axially controlled.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 1 in which said deflection means comprises horizontal and vertical beam deflecting devices responsive respectively to said X and Y programmed signals.
Claim 7
Dependent Claim
39 words
Apparatus according to claim 5 in which said horizontal and vertical beam deflecting devices are magnetic deflection coils, and means are included for converting said programmed X and Y signals to instantaneous current values in the corresponding deflection coils.
Claim 8
Dependent Claim
78 words
Apparatus according to claim 6 in which said fly''s eye lens array is defined as having a very short focal length for each lenslet thereof, and in which a fiber optic faceplate is provided as the portion of said enclosure between said phosphor screen and said fly''s eye lens array whereby the picture mosaic on said phosphor is optically projected intact substantially to the outside surface of said faceplate substantially in contact with said fly''s eye lens array.
References Cited (Backward Citations)
US3658407A
Cited
US3688045A
Cited
US3688144A
Cited
US3657981A
Cited
US3678184A
Cited
US3798478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |