US3566111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for varying the detector slit width in fully focusing x-ray spectrometers
Assignee: Siemens AG
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Filing: 1968-06-18
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Granted: 1971-02-23
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Expires: 1988-06-18
Abstract
Abstract A mechanism in a fully focusing X-ray spectrometer for adjusting the width of the detector slit to an optimal value as the analyzer crystal is rotated during the spectrometric process. The analyzer crystal, the detector slit and the detector are mounted on a detector arm. The width of the detector slit is defined by the space (viewed from the analyzer crystal) between two screening members affixed to a pulley in a diametrically opposed relation. Said pulley is rotatably connected with another pulley being at a constant distance therefrom and being secured to the analyzer crystal. A relative rotation of the analyzer crystal with respect to the detector arm is transmitted as a rotation of the same extent to the pulley carrying the screening members.
Inventors
- 👤 Bruno Harm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:09
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/207; G01N23/2076
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
247 words
In a fully focusing X-ray spectrometer of the type having an X-ray source, an analyzer crystal, a detector and means defining a detector slit, the improvement comprising, in combination: A. a detector arm on a first end of which there is mounted said analyzer crystal and on a second end of which there is mounted said detector; B. a first pulley means mounted on said first end of said detector arm, said analyzer crystal and said detector arm adapted to rotate relative to one another about the center of said first pulley means; C. a second pulley means mounted on said detector arm between said detector and said analyzer crystal at a constant distance from said first pulley means; D. means operatively connecting said first and second pulley means; E. means for linearly displacing said crystal simultaneously with the rotary motion thereof; and F. a pair of screening means fixedly secured to said second pulley means in a diametrically opposed relationship, said screening means defining said detector slit, and the space between said screening means as viewed from said analyzer crystal defining the width of said detector slit, a relative rotation of a determined angle between said analyzer crystal and said detector arm adapted to be transmitted from said first pulley means as a rotation of identical angle to said second pulley means causing a change in the position of said screening means varying thereby said width of said detector slit as viewed from said analyzer crystal.
Claim 2
Dependent Claim
247 words
In a fully focusing X-ray spectrometer of the type having an X-ray source, an analyzer crystal, a detector and means defining a detector slit, the improvement comprising, in combination: A. a detector arm on a first end of which there is mounted said analyzer crystal and on a second end of which there is mounted said detector; B. a first pulley means mounted on said first end of said detector arm, said analyzer crystal and said detector arm adapted to rotate relative to one another about the center of said first pulley means; C. a second pulley means mounted on said detector arm between said detector and said analyzer crystal at a constant distance from said first pulley means; D. means operatively connecting said first and second pulley means; E. means for linearly displacing said crystal simultaneously with the rotary motion thereof; and F. a pair of screening means fixedly secured to said second pulley means in a diametrically opposed relationship, said screening means defining said detector slit, and the space between said screening means as viewed from said analyzer crystal defining the width of said detector slit, a relative rotation of a determined angle between said analyzer crystal and said detector arm adapted to be transmitted from said first pulley means as a rotation of identical angle to said second pulley means causing a change in the position of said screening means varying thereby said width of said detector slit as viewed from said analyzer crystal.
Claim 3
Dependent Claim
35 words
The improvement as defined in claim 1 including rotating means for turning said detector arm through an angle twice the magnitude of the angle through which said analyzer crystal is rotated during the spectrometric process.
Claim 4
Dependent Claim
171 words
The improvement as defined in claim 2, wherein said rotating means includes: A. a first and second stationary linear guide rail disposed in spaced, converging relation to one another; B. a first and a second bearing block slidably mounted on said first and second guide rail, respectively, said first bearing block is disposed adjacent to and concentrically with said first pulley means; C. a rigid arm pivotally connected by its ends to said first and second bearing blocks, said analyzer crystal and said detector arm adapted to rotate through an angle theta when said bearing blocks are displaced along a determined distance on said rails; D. a first sector mounted concentrically with said first pulley means and fixedly connected with said detector arm; E. a second sector fixedly attached to said second bearing block; and F. means connecting said first and said second sectors, said first and second sectors cause a rotation of said detector arm through an additional angle theta when said bearing blocks are displaced along said determined distance.
Claim 5
Dependent Claim
26 words
The improvement as defined in claim 1, wherein said screening means includes two parallel spaced cylinders secured to said second pulley means in diametrically opposed relation.
Claim 6
Dependent Claim
17 words
The improvement as defined in claim 4, wherein each of said cylinders has a constant, identical diameter.
Claim 7
Dependent Claim
80 words
The improvement as defined in claim 5, wherein said constant, identical diameter is defined by the fraction KD X LM/2R where KD is the distance between the centers of said first and said second pulley means, LM is the length of the reflecting face of said analyzer crystal disposed diametrically with respect to said first pulley means and also the distance between the centers of said two cylinders and R is the radius of the Rowland circle of said spectrometer.
Claim 8
Dependent Claim
27 words
The improvement as defined in claim 4, wherein each of said cylinders is provided with a shield extending away from the center of said second pulley means.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |