US3278752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle optical system having a telecentric stop and an interference filter
Assignee: Individual
•
Filing: 1963-06-17
•
Granted: 1966-10-11
•
Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Berlyn B Brixner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
G; G02; G02B; G02B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A WIDE ANGLE OPTICAL SYSTEM COMPRISING: (A) A NEGATIVE MENISCUS FIELD COMPRESSOR LENS OF THE OBJECT SIDE OF THE SYSTEM BEING CONVEX TOWARDS THE OBJECT, (B) A TELECENTRIC STOP FOLLOWING SAID COMPRESSOR LENS, (C) POSITIVE CONDENSING LENS MEANS FOLLOWING SAID STOP WITH ITS FIRST PRINCIPAL FOCAL PLANE COINCIDING WITH THE POSITION OF SAID STOP, AND A VERY NARROW BANDPASS INTERFERENCE FILTER ON THE IMAGE SIDE OF THE CONDENSING LENS MEANS, (D) SAID CONDENSING LENS MEANS CAUSING THE CHIEF RAYS OF ALL IMAGE-FORMING LIGHT CONES TO BE ABOUT PERPENDICULAR TO THE SURFACE OF SAID VERY NARROW BANDPASS INTERFERENCE FILTER.
Claim 2
Dependent Claim
98 words
A WIDE ANGLE OPTICAL SYSTEM COMPRISING: (A) A NEGATIVE MENISCUS FIELD COMPRESSOR LENS OF THE OBJECT SIDE OF THE SYSTEM BEING CONVEX TOWARDS THE OBJECT, (B) A TELECENTRIC STOP FOLLOWING SAID COMPRESSOR LENS, (C) POSITIVE CONDENSING LENS MEANS FOLLOWING SAID STOP WITH ITS FIRST PRINCIPAL FOCAL PLANE COINCIDING WITH THE POSITION OF SAID STOP, AND A VERY NARROW BANDPASS INTERFERENCE FILTER ON THE IMAGE SIDE OF THE CONDENSING LENS MEANS, (D) SAID CONDENSING LENS MEANS CAUSING THE CHIEF RAYS OF ALL IMAGE-FORMING LIGHT CONES TO BE ABOUT PERPENDICULAR TO THE SURFACE OF SAID VERY NARROW BANDPASS INTERFERENCE FILTER.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |