US3769633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raindrop image recording analyzer system
Assignee: United States Department of the Navy
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Filing: 1972-05-11
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Granted: 1973-10-30
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Expires: 1992-05-11
Abstract
Abstract A method and apparatus is disclosed for measuring the density size, shape and distribution of rain, snow, hail, sleet and the like in the atmosphere. A preferred embodiment of the apparatus utilizes a gated image (channel plate) intensifier mounted in an aircraft and an outboard high intensity light. The light establishes a defined volume which is examined by the image intensifier for a time interval on the order of a microsecond or less. The image is retained by the intensifier tube while a high speed camera or other means photographs or scans the surface to provide a record.
Inventors
- 👤 W Teeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/02; G01N15/0205; G01N15/0227; G01W; G01W1/00; G01W1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
Apparatus for recording an image to be used in the measurement of density, size, shape and distribution of rain, snow, hail, sleet and the like in the atmosphere comprising: an image intensifier tube having in its optical field of view a defined volume of said atmosphere; said tube including a phosphor plate, an amplifier and a pHotocathode for electrically producing an image of said volume; gating means connected to said photocathode; means for illuminating said field of view of said tube; means including a photographic camera for recording said image; and synchronization means connected to said illumination means, said recording means and said photocathode gating means for synchronizing the gating of said photocathode with the illumination of said field of view and the recording of said image: said field of view, said tube and said recording means being aligned to form an optical path of said images.
Claim 2
Dependent Claim
147 words
Apparatus for recording an image to be used in the measurement of density, size, shape and distribution of rain, snow, hail, sleet and the like in the atmosphere comprising: an image intensifier tube having in its optical field of view a defined volume of said atmosphere; said tube including a phosphor plate, an amplifier and a pHotocathode for electrically producing an image of said volume; gating means connected to said photocathode; means for illuminating said field of view of said tube; means including a photographic camera for recording said image; and synchronization means connected to said illumination means, said recording means and said photocathode gating means for synchronizing the gating of said photocathode with the illumination of said field of view and the recording of said image: said field of view, said tube and said recording means being aligned to form an optical path of said images.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |