US3270615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three component zoom lens for photographic miniature cameras
Assignee: Nikon Corp
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Filing: 1962-07-11
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Granted: 1966-09-06
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 Higuchi Takashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:29
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/143; G02B15/1431; G02B15/143105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
5F1< R1 <1.1F1 0.2F1< F2 <0.5F1 0.9 F2 < F3 <1.8 F2 1.2NF2< R3 <$ 0.4N F2 < R4 <1.5N F2 0.9F3< R11 <1.8F3 0.5F3<R12 <1.3F3 L=D2S-D2L F2(D2S-L) (B3S+L-F3) -F2F3(B3S+L) M=F1-D1S+ (DS2-L)(B3S+L-F3)-F3(B3S+L)-F2(B3S+L-F3
Claim 2
Dependent Claim
101 words
A ZOOM LENS COMPRISING THREE COMPONENTS OF WHICH THE FIRST IS A POSITIVE MOVABLE COMPONENT OF FOCAL LENGTH F1, THE SECOND IS AN IMMOVABLE NEGATIVE COMPONENT CONSISTING OF A PLURALITY N UP TO THREE BICONCAVE AIRSPACED NEGATIVE LENS ELEMENTS, THE SECOND COMPONENT HAVING A FOCAL LENGTH OF F2, AND THE THIRD IS A POSITIVE MOVABLE COMPONENT OF FOCAL LENGTH F3, AND CONSISTINGOF TWO POSITIVE LENS ELEMENTS, A NEGATIVE LENS ELEMENT AND A POSITIVE LENS ELEMENT AIR SPACED IN THAT ORDER, THE SECOND COMPONENT IS SPATIALLY FIXED BETWEEN THE FIRST AND THIRD MECHANICALLY MOVABLE COMPONENTS, THE LENS ARRAY SATISFYING THE FOLLOWING CONDITIONS:
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |