US4029389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation scanning system
Assignee: Thales Optronics Ltd
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Filing: 1976-06-09
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Granted: 1977-06-14
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Expires: 1996-06-09
Abstract
Abstract A radiation scanning system which includes a radiation detector located at the focus of an objective lens element and a radiation scanning element arranged to scan radiation emanating from a field of view across the detector. The radiation forms a primary pupil, and one of said elements is located at a conjugate pupil formed by an optical assembly which comprises first and second concave part-spherical reflectors respectively having their centers of curvature substantially optically coincident with the locations of the primary pupil and the conjugate pupil, and a convex reflector substantially coincident with the locus of the focii formed by parallel beams of radiation emanating from the primary pupil and incident upon the first concave reflector.
Inventors
- 👤 Herbert Morrison Runciman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/12; G02B26/125; G02B26/126; H; H04; H04N; H04N3/00; H04N3/02; H04N3/08; H04N3/09
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A radiation scanning system comprising a radiation detector located at the focus of an objective lens element and a radiation scanning element arranged to scan radiation emanating from a field of view across said detector, wherein said radiation forms a primary pupil and one of said elements is located at a conjugate pupil formed by an optical assembly comprising first and second concave part-spherical reflectors respectively having their centres of curvature substantially optically co-incident with the locations of the primary pupil and the conjugate pupil, and a convex reflector substantially coincident with the locus of the focii formed by parallel beams of radiation emanating from said primary pupil and incident upon the first concave reflector.
Claim 2
Dependent Claim
115 words
A radiation scanning system comprising a radiation detector located at the focus of an objective lens element and a radiation scanning element arranged to scan radiation emanating from a field of view across said detector, wherein said radiation forms a primary pupil and one of said elements is located at a conjugate pupil formed by an optical assembly comprising first and second concave part-spherical reflectors respectively having their centres of curvature substantially optically co-incident with the locations of the primary pupil and the conjugate pupil, and a convex reflector substantially coincident with the locus of the focii formed by parallel beams of radiation emanating from said primary pupil and incident upon the first concave reflector.
Claim 3
Dependent Claim
25 words
A system as claimed in claim 1, wherein said scanning element defines said primary pupil and said lens element is located at said conjugate pupil.
Claim 4
Dependent Claim
29 words
A system as claimed in claim 1, wherein said primary pupil is defined by a first scanning element and a second scanning element is located at said conjugate pupil
Claim 5
Dependent Claim
39 words
A system as claimed in claim 1, wherein said conjugate pupil is one of a series of such pupils formed by a succession of similar optical assemblies, and elements of the scanning system are located at each such pupil.
Claim 6
Dependent Claim
16 words
A system as claimed in claim 1, wherein said convex reflector forms part of a sphere.
Claim 7
Dependent Claim
16 words
A system as claimed in claim 1 wherein said convex reflector forms part of a cylinder.
Claim 8
Dependent Claim
21 words
A system as claimed in claim 1, wherein the or each scanning element is in the form of a flap mirror.
Claim 9
Dependent Claim
21 words
A system as claimed in claim 1 wherein the or each scanning element is in the form of a drum scanner.
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |