Patent US5694235A successfully refreshed from Google Patents.
US5694235A
Expired / Lapsed
US
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Three-dimensional moving image recording/reproducing system which is compact in size and easy in recording and reproducing a three-dimensional moving image
Assignee: NEC Corp
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Filing: 1996-03-07
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Granted: 1997-12-02
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Expires: 2016-03-07
Abstract
Abstract Upon picking up an image, light beams passing through a focal point of an image-forming lens are directed to an optical detector array comprising a plurality of optical detectors. Each optical detector selectively receives a light beam passing through the focal point with a particular different angle. By two-dimensionally scanning the focal point at a high speed by the use of a polygonal mirror and a vertical scanning section, a parallactic image of an object placed at a pickup/display position is picked up at a particular angle. Upon display, the parallactic image taken in a particular direction is projected from each light source of a light source array to the focal point. The focal point is two-dimensionally scanned at a high speed so that a stereoscopic image is displayed on the pickup/display position.
Inventors
- 👤 Yoshihiro Kajiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:17
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/12; H; H04; H04N; H04N13/00; H04N13/20; H04N13/204; H04N13/243; H04N13/30; H04N13/302; H04N13/305; H04N13/32; H04N13/388; H04N13/393; H04N13/207; H04N13/229; H04N13/239; H04N13/332; H04N13/344; H04N13/398
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A three-dimensional moving image recording device comprising a plurality of optical detectors and a scanning mechanism, said optical detectors being arranged so as to totally receive light beams within a limited solid angle among those light beams passing through a particular viewing point in a space and to individually receive the light beams advancing in different directions, respectively, among those light beams passing through the same viewing point, said scanning mechanism being for vertically and horizontally scanning said viewing point or an image of said viewing point, said device further comprising a mechanism for electronically measuring a time-varying luminous energy incident to each of said optical detectors as a result of scanning by said scanning mechanism to obtain a measurement value and for recording or transmitting said measurement value.
Claim 2
Dependent Claim
129 words
A three-dimensional moving image recording device comprising a plurality of optical detectors and a scanning mechanism, said optical detectors being arranged so as to totally receive light beams within a limited solid angle among those light beams passing through a particular viewing point in a space and to individually receive the light beams advancing in different directions, respectively, among those light beams passing through the same viewing point, said scanning mechanism being for vertically and horizontally scanning said viewing point or an image of said viewing point, said device further comprising a mechanism for electronically measuring a time-varying luminous energy incident to each of said optical detectors as a result of scanning by said scanning mechanism to obtain a measurement value and for recording or transmitting said measurement value.
Claim 3
Dependent Claim
36 words
A three-dimensional moving image recording device as claimed in claim 1, wherein said scanning mechanism comprises an optical scanning apparatus implemented by at least one of a polygonal mirror, a galvano mirror, and an AO crystal.
Claim 4
Dependent Claim
102 words
A three-dimensional moving image reproducing device comprising a plurality of light sources and a scanning mechanism, said plurality of light sources being arranged so that light beams emitted therefrom are totally converged onto a particular converging point in a space within a limited solid angle and are individually converged onto the same converging point from different directions, respectively, said scanning mechanism being for vertically and horizontally scanning said converging point or an image of said converging point, said device further comprising a modulating mechanism for modulating a luminous energy of each of said light sources in response to electronic stereoscopic video information.
Claim 5
Dependent Claim
102 words
A three-dimensional moving image reproducing device comprising a plurality of light sources and a scanning mechanism, said plurality of light sources being arranged so that light beams emitted therefrom are totally converged onto a particular converging point in a space within a limited solid angle and are individually converged onto the same converging point from different directions, respectively, said scanning mechanism being for vertically and horizontally scanning said converging point or an image of said converging point, said device further comprising a modulating mechanism for modulating a luminous energy of each of said light sources in response to electronic stereoscopic video information.
Claim 6
Dependent Claim
36 words
A three-dimensional moving image reproducing device as claimed in claim 3, wherein said scanning mechanism comprises an optical scanning apparatus implemented by at least one of a polygonal mirror, a galvano mirror, and an acousto-optic crystal.
Claim 7
Dependent Claim
321 words
A three-dimensional moving image recording/reproducing system comprising: a three-dimensional moving image recording device comprising a plurality of optical detectors and a scanning mechanism, said optical detectors being arranged so as to totally receive light beams within a limited solid angle among those light beams passing through a particular viewing point in a space and to individually receive the light beams advancing in different directions, respectively, among those light beams passing through the same viewing point, said scanning mechanism being for vertically and horizontally scanning said viewing point or an image of said viewing point, said device further comprising a mechanism for electronically measuring a time-varying luminous energy incident to each of said optical detectors as a result of scanning by said scanning mechanism to obtain a measurement value and for recording or transmitting said measurement value; a three-dimensional moving image reproducing device comprising a plurality of light sources and a scanning mechanism, said plurality of light sources being arranged so that light beams emitted therefrom are totally converged onto a particular converging point in a space within a limited solid angle and are individually converged onto the same converging point from different directions, respectively, said scanning mechanism being for vertically and horizontally scanning said converging point or an image of said converging point, said device further comprising a modulating mechanism for modulating a luminous energy of each of said light sources in response to electronic stereoscopic video information; and an optical path branching mechanism such as a movable mirror and a half mirror for branching an optical path so that the position of the viewing point of said three-dimensional moving image recording device and the position of the converging point of said three-dimensional moving image reproducing device coincide with each other to thereby enable common use of a single scanning apparatus as the scanning mechanism both in said three-dimensional moving image recording device and in said three-dimensional moving image reproducing device.
Claim 8
Dependent Claim
321 words
A three-dimensional moving image recording/reproducing system comprising: a three-dimensional moving image recording device comprising a plurality of optical detectors and a scanning mechanism, said optical detectors being arranged so as to totally receive light beams within a limited solid angle among those light beams passing through a particular viewing point in a space and to individually receive the light beams advancing in different directions, respectively, among those light beams passing through the same viewing point, said scanning mechanism being for vertically and horizontally scanning said viewing point or an image of said viewing point, said device further comprising a mechanism for electronically measuring a time-varying luminous energy incident to each of said optical detectors as a result of scanning by said scanning mechanism to obtain a measurement value and for recording or transmitting said measurement value; a three-dimensional moving image reproducing device comprising a plurality of light sources and a scanning mechanism, said plurality of light sources being arranged so that light beams emitted therefrom are totally converged onto a particular converging point in a space within a limited solid angle and are individually converged onto the same converging point from different directions, respectively, said scanning mechanism being for vertically and horizontally scanning said converging point or an image of said converging point, said device further comprising a modulating mechanism for modulating a luminous energy of each of said light sources in response to electronic stereoscopic video information; and an optical path branching mechanism such as a movable mirror and a half mirror for branching an optical path so that the position of the viewing point of said three-dimensional moving image recording device and the position of the converging point of said three-dimensional moving image reproducing device coincide with each other to thereby enable common use of a single scanning apparatus as the scanning mechanism both in said three-dimensional moving image recording device and in said three-dimensional moving image reproducing device.
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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) | 2000-12-01 | 2001-06-02 | 2001-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-01 | 2005-06-02 | 2005-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-01 | 2009-06-02 | 2009-12-02 | $7700.00 | Window Closed / Lapsed |