US4513434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-Ray reflective optical elements
Assignee: United States Department of the Army
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Filing: 1982-12-07
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Granted: 1985-04-23
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Expires: 2002-12-07
Abstract
Abstract An echelon arrangement of Bragg-angle X-ray or gamma ray reflectors using ystals. Each successive member of the echelon has one more crystal than the preceeding member. Thus, each ray of an incident X-ray or gamma ray beam is reflected by a different amount and the reflected rays may be directed through a common focal point.
Inventors
- 👤 Aubrey J. Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:23
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/06; G21K2201/00; G21K2201/06; G21K2201/062
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
47 words
A reflective optical element for incident penetrating electromagnetic radiation including an echelon array of reflectors for the radiation, wherein each reflector includes at least one crystal at the Bragg angle for the incident radiation, and successive members of said echelon have a successively greater number of crystals.
Claim 2
Dependent Claim
47 words
A reflective optical element for incident penetrating electromagnetic radiation including an echelon array of reflectors for the radiation, wherein each reflector includes at least one crystal at the Bragg angle for the incident radiation, and successive members of said echelon have a successively greater number of crystals.
Claim 3
Dependent Claim
87 words
The optical element as set forth in claim 1 wherein said radiation may be considered as including a plurality of rays propagating in particular directions, and wherein, respective ones of said rays impinge on respective ones of said reflectors and are reflected thereby, and wherein, for a reflector having more than one crystal, the respective ray impinging thereon is successively reflected by each successive crystal, such that every respective ray is reflected from its particular direction in direct relation to the number of crystals of each reflector.
References Cited (Backward Citations)
US3160749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |