Patent US3777159A successfully refreshed from Google Patents.
US3777159A
Expired / Lapsed
US
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Parallel entry detector system
Assignee: SURFACE SCIENCE LABORATORIES Inc
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Filing: 1972-11-09
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Granted: 1973-12-04
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Expires: 1992-11-09
Abstract
Abstract An imaging electron multiplier, a phosphor screen, and a vidicon camera tube are employed as a multichannel electron detector array at the output of an electron spectrometer. A sweep generator connected to an electron lens at the input of the spectrometer retards the incoming electrons in a controlled manner so that the electron energy spectrum is swept across the face of the imaging electron multiplier and, thus, across the face of the vidicon camera tube. The weighted sum of the sweep signal to the electron lens and the vertical scan signal to the vidicon camera tube is taken to provide a signal that corresponds to the original, unswept value of the energy of the electrons prior to their entering the electron lens. This signal is fed to the input of a multichannel analyzer. A pulse generated by the vidicon camera tube in response to each electron exiting the electron spectrometer causes the multichannel analyzer to sample the signal at its input. Thus, the original energy of each electron is measured and entered into the multichannel analyzer memory, regardless of where it struck the imaging electron multiplier. This eliminates distortion errors and scatter in the electron energy spectra caused by the nonrepeatability of the efficiency and noise of different detectors.
Inventors
- 👤 D Hammond
- 👤 C Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:23
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/022; H01J49/44; H01J49/46; H01J49/48
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
A dispersive spectrometer system comprising: a source of particles; a dispersive spectrometer having an input for receiving the particles from said source, having an output, and being operable for producing at its output a spatial spectrum of the particles as a function of a selected parameter; parallel entry detector means having a plurality of adjacently situated elements disposed at the output of said spectrometer to receive said spatial spectrum of the particles for detecting the positions of the particles at the output of the spectrometer; data register means, including a plurality of registers connected to said detector means, for accumulating and storing information from the detector means; sweeping means connected to said spectrometer for sweeping the spectrum at the output of the spectrometer across said detector means; and control means connected to said detector means, data register means and sweeping means for connecting the detector means to selected ones of the registers, each register accumulating and storing information from substantially all of the detector means elements about particles having a value of the selected parameter within a different predetermined range.
Claim 2
Dependent Claim
180 words
A dispersive spectrometer system comprising: a source of particles; a dispersive spectrometer having an input for receiving the particles from said source, having an output, and being operable for producing at its output a spatial spectrum of the particles as a function of a selected parameter; parallel entry detector means having a plurality of adjacently situated elements disposed at the output of said spectrometer to receive said spatial spectrum of the particles for detecting the positions of the particles at the output of the spectrometer; data register means, including a plurality of registers connected to said detector means, for accumulating and storing information from the detector means; sweeping means connected to said spectrometer for sweeping the spectrum at the output of the spectrometer across said detector means; and control means connected to said detector means, data register means and sweeping means for connecting the detector means to selected ones of the registers, each register accumulating and storing information from substantially all of the detector means elements about particles having a value of the selected parameter within a different predetermined range.
Claim 3
Dependent Claim
62 words
A dispersive spectrometer system as in claim 1 wherein: said particles comprise electrons; said dispersive spectrometer comprises an electron spectrometer and an electron lens at the input of the spectrometer for focusing the electrons; said sweeping means is connected to said electron lens; and said control means comprises a voltage summer connected to said sweeper means, circuit means, and data register means.
Claim 4
Dependent Claim
131 words
A detector system for two dimensional data comprising: parallel entry detector means having a plurality of adjacently situated elements for receiving and detecting the positions of particles; data register means, including a two dimensional array of registers connected to said detector means, for accumulating and storing information from the detector means; sweeping means for sweeping the particles across substantially all of said detector means elements in two dimensions; and control means connected to said detector means, data register means and sweeping means for connecting the detector means to selected ones of the registers, each register accumulating and storing information from substantially all of the detector means elements about particles having positions within a different predetermined two dimensional range, uniformly averaging variations among the detector means elements over each of the registers.
Claim 5
Dependent Claim
131 words
A detector system for two dimensional data comprising: parallel entry detector means having a plurality of adjacently situated elements for receiving and detecting the positions of particles; data register means, including a two dimensional array of registers connected to said detector means, for accumulating and storing information from the detector means; sweeping means for sweeping the particles across substantially all of said detector means elements in two dimensions; and control means connected to said detector means, data register means and sweeping means for connecting the detector means to selected ones of the registers, each register accumulating and storing information from substantially all of the detector means elements about particles having positions within a different predetermined two dimensional range, uniformly averaging variations among the detector means elements over each of the registers.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |