US4486076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Real time stereo imaging
Assignee: SRI International Inc
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Filing: 1981-10-29
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Granted: 1984-12-04
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Expires: 2001-10-29
Abstract
Abstract A pair of image fields which are views of an object from two slightly different angles at near enough the same time to constitute a stereo image field pair is produced by providing a pair of similar coaxial counterrotating refracting prisms between the object viewed and the image field and alternately transmitting an image field through the prisms on opposite sides of the plane through or parallel to the central axis of the two prisms.
Inventors
- 👤 Jon C. Taenzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/0875; G02B26/0883; G02B26/0891; G02B30/00; G02B30/20; G02B30/22; G02B30/24; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30; Y; Y10; Y10S; Y10S128/00; Y10S128/916
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
In a system for producing stereo image pairs in real time, said system including an image deflecting means for repeatedly sweeping an image field orthogonally past a given line so that every portion of that image field moves past that line, and blocking means for preventing opposite sides of the said image from reaching said line on alternate sweeps of said image field past the said line, thereby to present a different image view on alternate sweeps and thus present a different one of a stereo image pair at the said line on alternate sweeps.
Claim 2
Dependent Claim
95 words
In a system for producing stereo image pairs in real time, said system including an image deflecting means for repeatedly sweeping an image field orthogonally past a given line so that every portion of that image field moves past that line, and blocking means for preventing opposite sides of the said image from reaching said line on alternate sweeps of said image field past the said line, thereby to present a different image view on alternate sweeps and thus present a different one of a stereo image pair at the said line on alternate sweeps.
Claim 3
Dependent Claim
112 words
In a system for producing stereo image pairs in real time as defined in claim 1, wherein the said image deflecting means constitutes at least a pair of prisms rotatably mounted in axially aligned relationship along the path of incidence of the image, each of said prisms having at least one planar surface forming an angle with the axis of said path of incidence and substantially parallel to the corresponding surface on the other for a given rotational position, and means to rotate said prisms in opposite rotational senses at equal angular displacements while maintaining the said axial alignment, whereby the said planar surfaces are substantially parallel for two positions during rotation.
Claim 4
Dependent Claim
40 words
In a system for producing stereo image pairs in real time as defined in claim 2, wherein the said blocking means constitutes a coating of material opaque to the said image field covering a portion of each of said prisms.
Claim 5
Dependent Claim
63 words
In a system for producing stereo image pairs in real time as defined in claim 3, wherein each of the said prisms has a generally circular outer peripheral configuration and wherein the said coating material covers a segment on at least one surface of each of said wedges which segments substantially block the full image field for two positions in each full rotation.
Claim 6
Dependent Claim
43 words
In a system for producing stereo image pairs in real time as defined in claim 4 wherein the said segments covered by said coating material on each prism comprises a sector or substantially one half of the said coated surface of each prism.
Claim 7
Dependent Claim
61 words
In a system for producing stereo image pairs in real time as defined in claim 5 wherein the said sector covered by said coating material on one of said pair of prisms comprises substantially three quarters of the said surface and the coated sector on the other of said pair of prisms comprises substantially one quarter of the said coated surface.
References Cited (Backward Citations)
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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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |