Patent US3221628A successfully refreshed from Google Patents.
US3221628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth-of-field indicator for varifocal objective
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1961-12-22
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Granted: 1965-12-07
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Mahn Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:40
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A CAMERA OBJECTIVE HAVING FIRST CONTROL MEANS FOR ADJUSTING THE APERATURE OF A VARIABLE DIAPHRAGM IN SAID OBJECTIVE AND SECOND CONTROL MEANS FOR DISPLACING A MOVABLE COMPONENT OF SAID OBJECTIVE TO CHANGE ITS FOCAL LENGTH, THE COMBINATION THEREWITH OF A CARRIER PROVIDED WITH A DISTANCE SCALE, CO-OPERATING MEANS FOR REGISTERING ON SAID SCALE A VARIABLE DISTANCE RANGE REPRESENTING DEPTH OF FIELD, SAID CO-OPERATING MEANS COMPRISING A SWINGABLE TRANSMISSION ELEMENT WITH A DISPLACEABLE FULCRUM, FIRST LINK MEANS COUPLING SAID ELEMENT WITH SAID FIRST CONTROL MEANS FOR SWINGING SID ELEMENT ABOUT SAID FULCRUM TO IMPART TO SAID CO-OPERATING MEANS AN ADJUSTMENT CORRELATED WITH DIAPHRAGM APERTURE, AND SECOND LINK MEANS COUPLING SAID FULCRUM WITH SAID SECOND CONTROL MEANS FOR DISPLACEMENT OF SAID ELEMENT TO IMPART TO SAID CO-OPERATING MEANS A CORRECTIVE ADJUSTMENT CORRELATED WITH FOCAL LENGTH.
Claim 2
Dependent Claim
134 words
IN A CAMERA OBJECTIVE HAVING FIRST CONTROL MEANS FOR ADJUSTING THE APERATURE OF A VARIABLE DIAPHRAGM IN SAID OBJECTIVE AND SECOND CONTROL MEANS FOR DISPLACING A MOVABLE COMPONENT OF SAID OBJECTIVE TO CHANGE ITS FOCAL LENGTH, THE COMBINATION THEREWITH OF A CARRIER PROVIDED WITH A DISTANCE SCALE, CO-OPERATING MEANS FOR REGISTERING ON SAID SCALE A VARIABLE DISTANCE RANGE REPRESENTING DEPTH OF FIELD, SAID CO-OPERATING MEANS COMPRISING A SWINGABLE TRANSMISSION ELEMENT WITH A DISPLACEABLE FULCRUM, FIRST LINK MEANS COUPLING SAID ELEMENT WITH SAID FIRST CONTROL MEANS FOR SWINGING SID ELEMENT ABOUT SAID FULCRUM TO IMPART TO SAID CO-OPERATING MEANS AN ADJUSTMENT CORRELATED WITH DIAPHRAGM APERTURE, AND SECOND LINK MEANS COUPLING SAID FULCRUM WITH SAID SECOND CONTROL MEANS FOR DISPLACEMENT OF SAID ELEMENT TO IMPART TO SAID CO-OPERATING MEANS A CORRECTIVE ADJUSTMENT CORRELATED WITH FOCAL LENGTH.
References Cited (Backward Citations)
FR1202607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |