Patent US3142224A successfully refreshed from Google Patents.
US3142224A
Expired / Lapsed
US
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Reflective scanning projection system
Assignee: Control Data Corp
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Filing: 1961-04-10
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Granted: 1964-07-28
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Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Laurence M Andrews
- 👤 Rabinow Jacob
- 👤 Fischer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:22
CPC Classifications
G; G03; G03B; G03B21/00; G06; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN OPTICAL PROJECTION SYSTEM FOR A DOCUMENT CARRYING A LINE OF DATA, MEANS CONSTRAINING SAID DOCUMENT INTO A CONCAVE CURVE SUBSTANTIALLY CYLINDRICAL AT ONE PORTION THEREOF, A LENS, ROTARY SCAN MEANS TO REFLECT IMAGES OF SUCCESSIVE PORTIONS OF THE LINE THROUGH THE AXIS OF SAID LENS WHILE MAINTAINING THE TOTAL OPTICAL DISTANCE BETWEEN SAID LENS AND THE LINE ESSENTIALLY EQUAL FOR EACH PORTION OF THE LINE THAT IS SCANNED, THEREBY MAINTAINING THE RAYS DEFINING THE SUCCESSIVE IMAGES IN FOCUS AND ON A SINGLE OPTICAL AXIS, SAID ROTARY SCAN MEANS HAVING AN AXIS OF ROTATION AND A REFLECTIVE SURFACE SPACED FROM SAID AXIS, THE CENTER OF CURVATURE OF SAID CONCAVE CURVE BEING SPACED FROM SAID AXIS OF ROTATION AND LOCATED BETWEEN SAID AXIS OF ROTATION AND SAID SURFACE.
Claim 2
Dependent Claim
127 words
AN OPTICAL PROJECTION SYSTEM FOR A DOCUMENT CARRYING A LINE OF DATA, MEANS CONSTRAINING SAID DOCUMENT INTO A CONCAVE CURVE SUBSTANTIALLY CYLINDRICAL AT ONE PORTION THEREOF, A LENS, ROTARY SCAN MEANS TO REFLECT IMAGES OF SUCCESSIVE PORTIONS OF THE LINE THROUGH THE AXIS OF SAID LENS WHILE MAINTAINING THE TOTAL OPTICAL DISTANCE BETWEEN SAID LENS AND THE LINE ESSENTIALLY EQUAL FOR EACH PORTION OF THE LINE THAT IS SCANNED, THEREBY MAINTAINING THE RAYS DEFINING THE SUCCESSIVE IMAGES IN FOCUS AND ON A SINGLE OPTICAL AXIS, SAID ROTARY SCAN MEANS HAVING AN AXIS OF ROTATION AND A REFLECTIVE SURFACE SPACED FROM SAID AXIS, THE CENTER OF CURVATURE OF SAID CONCAVE CURVE BEING SPACED FROM SAID AXIS OF ROTATION AND LOCATED BETWEEN SAID AXIS OF ROTATION AND SAID SURFACE.
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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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |