US3336094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Varifocal teleobjective with movable negative components
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1963-01-16
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Granted: 1967-08-15
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Macher Karl Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/145; G02B15/1451; G02B15/145125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN OPTICAL OBJECTIVE SYSTEM COMPRISING A FIXED REAR COMPONENT CONSTITUTED BY FOUR AIR-SPACED MEMBERS AND A FRONT LENS GROUP CONSTITUTED BY FOUR AIR-SPACED COMPONENTS INCLUDING A FIXED POSITIVE FIRST COMPONENT, A MOVABLE NEGATIVE SECOND COMPONENT, A MOVABLE NEGATIVE THIRD COMPONENT AND A FIXED POSITIVE FOURTH COMPONENT, THE MOBILITY OF SAID SECOND AND THIRD COMPONENTS ENABLING ADJUSTMENT OF THE OVERALL FOCAL LENGTH OF THE SYSTEM BETWEEN A MINIMUM VALUE FMIN AND A MAXIMUM VALUE FMAX, SAID SECOND AND THIRD COMPONENTS BEING SEPARATED FROM SAID FIRST AND FOURTH COMPONENTS AND FROM EACH OTHER BY THREE VARIABLE AIR SPACES, SAID SECOND AND THIRD COMPONENTS BEING MOVABLE RELATIVELY TO EACH OTHER AND TO SAID FIRST AND FOURTH COMPONENTS INTO A FIRST POSITION WHEREIN SAID SYSTEM HAS A RELATIVELY SHORT FOCAL LENGTH AN INTERMEDIATE POSITION OF INTERMEDIATE FOCAL LENGTH AND A THIRD POSITION
Claim 2
Dependent Claim
138 words
AN OPTICAL OBJECTIVE SYSTEM COMPRISING A FIXED REAR COMPONENT CONSTITUTED BY FOUR AIR-SPACED MEMBERS AND A FRONT LENS GROUP CONSTITUTED BY FOUR AIR-SPACED COMPONENTS INCLUDING A FIXED POSITIVE FIRST COMPONENT, A MOVABLE NEGATIVE SECOND COMPONENT, A MOVABLE NEGATIVE THIRD COMPONENT AND A FIXED POSITIVE FOURTH COMPONENT, THE MOBILITY OF SAID SECOND AND THIRD COMPONENTS ENABLING ADJUSTMENT OF THE OVERALL FOCAL LENGTH OF THE SYSTEM BETWEEN A MINIMUM VALUE FMIN AND A MAXIMUM VALUE FMAX, SAID SECOND AND THIRD COMPONENTS BEING SEPARATED FROM SAID FIRST AND FOURTH COMPONENTS AND FROM EACH OTHER BY THREE VARIABLE AIR SPACES, SAID SECOND AND THIRD COMPONENTS BEING MOVABLE RELATIVELY TO EACH OTHER AND TO SAID FIRST AND FOURTH COMPONENTS INTO A FIRST POSITION WHEREIN SAID SYSTEM HAS A RELATIVELY SHORT FOCAL LENGTH AN INTERMEDIATE POSITION OF INTERMEDIATE FOCAL LENGTH AND A THIRD POSITION
References Cited (Backward Citations)
FR1292894A
Cited
US3267803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |