US3720838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-aperture image dissector tube
Assignee: United States Department of the Navy
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Filing: 1971-11-03
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Granted: 1973-03-13
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Expires: 1991-11-03
Abstract
Abstract An image dissection tube is provided with a plurality of apertures in which each aperture is a different size. Each aperture is associated with an independent photomultiplier channel, and the individual channels are packaged in the same tube. This permits the flexibility possible when different resolutions are desired without having to use several image dissector tubes.
Inventors
- 👤 C Catchpole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:56
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
In an image analysis tube comprising: a photocathode; means for scanning an electron image formed by said photocathode; means responsive to electron density at known positions of said electron image; an independent signal channel means for each of said adjacent electron density responsive means; and readout means; the improvement comprising: said readout means including a plurality of apertures and including apertures of differing, distinct fixed sizes for sampling the electron image.
Claim 2
Dependent Claim
71 words
In an image analysis tube comprising: a photocathode; means for scanning an electron image formed by said photocathode; means responsive to electron density at known positions of said electron image; an independent signal channel means for each of said adjacent electron density responsive means; and readout means; the improvement comprising: said readout means including a plurality of apertures and including apertures of differing, distinct fixed sizes for sampling the electron image.
Claim 3
Dependent Claim
71 words
In an image analysis tube comprising: a photocathode; means for scanning an electron image formed by said photocathode; means responsive to electron density at known positions of said electron image; an independent signal channel means for each of said adjacent electron density responsive means; and readout means; the improvement comprising: said readout means including a plurality of apertures and including apertures of differing, distinct fixed sizes for sampling the electron image.
Claim 4
Dependent Claim
71 words
In an image analysis tube comprising: a photocathode; means for scanning an electron image formed by said photocathode; means responsive to electron density at known positions of said electron image; an independent signal channel means for each of said adjacent electron density responsive means; and readout means; the improvement comprising: said readout means including a plurality of apertures and including apertures of differing, distinct fixed sizes for sampling the electron image.
References Cited (Backward Citations)
US3333145A
Cited
US3407324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |