US4296325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning mirror position system
Assignee: Thales Optronics Ltd
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Filing: 1980-03-10
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Granted: 1981-10-20
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Expires: 2000-03-10
Abstract
Abstract A radiation scanning system comprises a detector 12 which forms part of an assembly 11 maintained at a temperature substantially below ambient, an imaging means 18 for forming an image of radiation from a field of view, a scan member 15 and a relay lens 14 arranged to scan an image of the detector 12 across the radiation image and an arrangement for applying a characteristic radiation feature to the detector 12 at a selected part of the detector image locus 19 lying outside the normal scanned field of the system comprises a mirror 20 arranged to reflect radiation from the cooled assembly 11 onto the detector 12.
Inventors
- 👤 Peter J. Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:01
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/02; H04N3/08; H04N3/09
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A radiation scanning system including a radiation detector, a radiation-imaging means for forming an image of radiation from a field of view, a scan member and a relay lens arranged to scan an image of the detector across the radiation image, and an arrangement for applying a characteristic radiation feature to the detector at a selected part of the detector image locus lying outside the normal scanned field of the system, wherein the radiation detector forms part of an assembly maintained at a temperature substantially below ambient, and said means for applying a characteristic radiation feature to the detector includes a mirror located on the scan locus of the detector image of the system and arranged to reflect radiation from the cooled assembly onto the detector.
Claim 2
Dependent Claim
126 words
A radiation scanning system including a radiation detector, a radiation-imaging means for forming an image of radiation from a field of view, a scan member and a relay lens arranged to scan an image of the detector across the radiation image, and an arrangement for applying a characteristic radiation feature to the detector at a selected part of the detector image locus lying outside the normal scanned field of the system, wherein the radiation detector forms part of an assembly maintained at a temperature substantially below ambient, and said means for applying a characteristic radiation feature to the detector includes a mirror located on the scan locus of the detector image of the system and arranged to reflect radiation from the cooled assembly onto the detector.
Claim 3
Dependent Claim
21 words
A radiation scanning system as claimed in claim 1, wherein the reflective surface of the mirror has strips of different emissivity.
References Cited (Backward Citations)
US3350562A
Cited
US4152588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |