Patent US3673457A successfully refreshed from Google Patents.
US3673457A
Expired / Lapsed
US
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High gain storage target
Assignee: Corning Glass Works
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Filing: 1969-11-25
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Granted: 1972-06-27
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Expires: 1989-11-25
Abstract
Abstract An image conversion device of the type wherein an input photon image is converted to a photoelectron image which creates on a storage target a charge pattern corresponding to the input optical image. According to this invention a multichannel plate is disposed in intercepting relationship with the photoelectrons to provide electron multiplication of the photoelectron image.
Inventors
- 👤 William M Sackinger
- 👤 Robert A Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:35
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24; H01J43/246; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/41; H01J31/00; H01J31/08; H01J31/26; H01J31/48
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A charge storage device comprising a multichannel plate having a plurality of parallel tubular members, the inner surfaces of which contain a resistive, secondary-electron emissive layer, the openings in the ends of said tubular members lying on first and second surfaces which constitute input and output ends, respectively, of said multichannel plate, first and second conductive layers on said input and output ends of said multichannel plate, respectively, an electron image source disposed adjacent said input end of said multichannel plate, a storage target disposed at said output end of said multichannel plate, a charge image corresponding to that of said electron image source being written on said target by electrons emanating from said multichannel plate, and readout means for converting said charge image stored on said target into a video signal.
Claim 2
Dependent Claim
132 words
A charge storage device comprising a multichannel plate having a plurality of parallel tubular members, the inner surfaces of which contain a resistive, secondary-electron emissive layer, the openings in the ends of said tubular members lying on first and second surfaces which constitute input and output ends, respectively, of said multichannel plate, first and second conductive layers on said input and output ends of said multichannel plate, respectively, an electron image source disposed adjacent said input end of said multichannel plate, a storage target disposed at said output end of said multichannel plate, a charge image corresponding to that of said electron image source being written on said target by electrons emanating from said multichannel plate, and readout means for converting said charge image stored on said target into a video signal.
Claim 3
Dependent Claim
21 words
A charge storage device in accordance with claim 1 wherein said storage target is in contact with said second conductive layer.
Claim 4
Dependent Claim
48 words
A charge storage device in accordance with claim 2 wherein said second conductive layer extends along a portion of the inner surfaces of said tubular members and said storage target is a layer of storage material disposed on said second conductive layer and extending into said tubular members.
Claim 5
Dependent Claim
95 words
A charge storage device in accordance with claim 3 wherein said readout means comprises a conductive mesh spaced from and substantially parallel to said output end of said multichannel plate, means for scanning said storage target with an electron beam, the energy of which is such that the ratio of secondary electrons to scanning electrons striking said target is greater than one, biasing means for biasing said mesh positively with respect to said second conductive layer, and output means for indicating the level of secondary electron current flowing from said target layer to said mesh.
Claim 6
Dependent Claim
37 words
A charge storage device in accordance with claim 4 wherein said biasing means comprises a source of potential resistively coupled to said mesh and wherein said output means comprises an output terminal capacitively coupled to said mesh.
Claim 7
Dependent Claim
78 words
A charge storage device in accordance with claim 5 wherein said electron image source comprises a photocathode closely spaced from said input end of said microchannel plate and a source of potential connected between said photocathode and said first conductive layer for accelerating photoelectrons generated at said photocathode into said tubular members, the electric field established between said photocathode and said first conductive layer by said source of potential being the sole focusing force exerted on said photoelectrons.
Claim 8
Dependent Claim
78 words
A charge storage device in accordance with claim 2 wherein said electron image source comprises a photocathode closely spaced from said input end of said microchannel plate and a source of potential connected between said photocathode and said first conductive layer for accelerating photoelectrons generated at said photocathode into said tubular member, the electric field established between said photocathode and said first conductive layer by said source of potential being the sole focusing force exerted on said photoelectrons.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |