Patent US3149235A successfully refreshed from Google Patents.
US3149235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive radiant spot tracking system
Assignee: TDK Micronas GmbH
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Filing: 1960-06-10
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Granted: 1964-09-15
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Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 John R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7864
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A SYSTEM FOR TRACKING A RADIANT IMAGE COMPRISING: AN IMAGE TUBE HAVING PHOTOCATHODE MEANS FOR PRODUCING AN ELECTRON IMAGE IN RESPONSE TO IMPINGEMENT OF A RADIATION IMAGE THEREON, A MASKING ELECTRODE SPACED FROM SAID PHOTOCATHODE MEANS AND HAVING A RELATIVELY SMALL APERTURE THEREIN, MEANS FOR FOCUSING SAID ELECTRON IMAGE IN AN ELECTRON IMAGE PLANE WHICH INCLUDES SAID APERTURE, AN ANODE SPACED FROM SAID MASKING ELECTRODE ON THE SIDE THEREOF REMOTE FROM SAID PHOTOCATHODE FOR RECEIVING ELECTRON FLOW WHICH PASSES THROUGH SAID APERTURE, OUTPUT CIRCUIT MEANS COUPLED TO SAID ANODE FOR DEVELOPING AN OUTPUT SIGNAL RESPONSIVE TO SAID ELECTRON FLOW, AND MEANS FOR DEFLECTING SAID ELECTRON IMAGE IN TWO TRANSVERSE DIRECTIONS; SWEEP GENERATOR MEANS COUPLED TO SAID DEFLECTING MEANS FOR SCANNING SAID ELECTRON IMAGE OVER SAID MASKING ELECTRODE IN A CLOSED REGULAR GEOMETRIC PATTERN WITH A PLURALITY OF REENTRANT TRACES, SAID APERTURE BEING SMALLER THAN SAID GEOMETRIC PATTERN WHEREBY SAID ELECTRON IMAGE IS CAUSED TO MOVE INTO AND OUT OF SAID APERTURE TO PROVIDE A DIGITAL OUTPUT SIGNAL HAVING A FUNDAMENTAL FREQUENCY COMPONENT RESPONSIVE TO DISPLACEMENT OF SAID GEOMETRIC PATTERN FROM THE CENTER OF SAID APERTURE AND HAVING A HARMONIC OF SAID FUNDAMENTAL FREQUENCY COMPONENT WHEN SAID GEOMETRIC PATTERN IS IN THE CENTER OF SAID APERTURE; FIRST FILTER
Claim 2
Independent Claim
207 words
A SYSTEM FOR TRACKING A RADIANT IMAGE COMPRISING: AN IMAGE TUBE HAVING PHOTOCATHODE MEANS FOR PRODUCING AN ELECTRON IMAGE IN RESPONSE TO IMPINGEMENT OF A RADIATION IMAGE THEREON, A MASKING ELECTRODE SPACED FROM SAID PHOTOCATHODE MEANS AND HAVING A RELATIVELY SMALL APERTURE THEREIN, MEANS FOR FOCUSING SAID ELECTRON IMAGE IN AN ELECTRON IMAGE PLANE WHICH INCLUDES SAID APERTURE, AN ANODE SPACED FROM SAID MASKING ELECTRODE ON THE SIDE THEREOF REMOTE FROM SAID PHOTOCATHODE FOR RECEIVING ELECTRON FLOW WHICH PASSES THROUGH SAID APERTURE, OUTPUT CIRCUIT MEANS COUPLED TO SAID ANODE FOR DEVELOPING AN OUTPUT SIGNAL RESPONSIVE TO SAID ELECTRON FLOW, AND MEANS FOR DEFLECTING SAID ELECTRON IMAGE IN TWO TRANSVERSE DIRECTIONS; SWEEP GENERATOR MEANS COUPLED TO SAID DEFLECTING MEANS FOR SCANNING SAID ELECTRON IMAGE OVER SAID MASKING ELECTRODE IN A CLOSED REGULAR GEOMETRIC PATTERN WITH A PLURALITY OF REENTRANT TRACES, SAID APERTURE BEING SMALLER THAN SAID GEOMETRIC PATTERN WHEREBY SAID ELECTRON IMAGE IS CAUSED TO MOVE INTO AND OUT OF SAID APERTURE TO PROVIDE A DIGITAL OUTPUT SIGNAL HAVING A FUNDAMENTAL FREQUENCY COMPONENT RESPONSIVE TO DISPLACEMENT OF SAID GEOMETRIC PATTERN FROM THE CENTER OF SAID APERTURE AND HAVING A HARMONIC OF SAID FUNDAMENTAL FREQUENCY COMPONENT WHEN SAID GEOMETRIC PATTERN IS IN THE CENTER OF SAID APERTURE; FIRST FILTER
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |