US3088368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable magnification optical system
Assignee: Farrand Optical Co Inc
•
Filing: 1959-01-15
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Granted: 1963-05-07
•
Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Robert W Tripp
- 👤 Earle B Brown
- 👤 Shenker Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:24
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/02; G02B21/025; G02B15/00; G02B15/14; G02B15/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A VARIABLE MAGNIFICATION OPTICAL SYSTEM, INCLUDING FIRST AND SECOND GROUPS OF OPTICAL COMPONENTS SPACED APART ALONG A COMMON OPTICAL AXIS, THE POSITIONS OF THE COMPONENTS IN EACH SAID GROUP BEING FIXED RELATIVE TO EACH OTHER, THE FIRST GROUP COMPRISING ESSENTIALLY AN OBJECTIVE WITH RESPECT TO AN OBJECT LOCATED IN A FIXED OBJECT PLANE BEFORE IT, MEANS IN SAID FIRST GROUP FOR FORMING A REAL MINIFIED IMAGE OF SAID OBJECT IN A FIRST IMAGE PLANE WITHIN SAID GROUPS, THE SECOND GROUP COMPRISING ESSENTIALLY AN OBJECTIVE WITH RESPECT TO SAID REAL IMAGE, MEANS IN SAID FIRST GROUP FOR FORMING AN ENTRANCE PUPIL FOR SAID SECOND GROUP, MEANS IN SAID SECOND GROUP FOR FORMING A SECOND AND MAGNIFIED IMAGE OF SAID MINIFIED IMAGE IN A SECOND
Claim 2
Dependent Claim
123 words
A VARIABLE MAGNIFICATION OPTICAL SYSTEM, INCLUDING FIRST AND SECOND GROUPS OF OPTICAL COMPONENTS SPACED APART ALONG A COMMON OPTICAL AXIS, THE POSITIONS OF THE COMPONENTS IN EACH SAID GROUP BEING FIXED RELATIVE TO EACH OTHER, THE FIRST GROUP COMPRISING ESSENTIALLY AN OBJECTIVE WITH RESPECT TO AN OBJECT LOCATED IN A FIXED OBJECT PLANE BEFORE IT, MEANS IN SAID FIRST GROUP FOR FORMING A REAL MINIFIED IMAGE OF SAID OBJECT IN A FIRST IMAGE PLANE WITHIN SAID GROUPS, THE SECOND GROUP COMPRISING ESSENTIALLY AN OBJECTIVE WITH RESPECT TO SAID REAL IMAGE, MEANS IN SAID FIRST GROUP FOR FORMING AN ENTRANCE PUPIL FOR SAID SECOND GROUP, MEANS IN SAID SECOND GROUP FOR FORMING A SECOND AND MAGNIFIED IMAGE OF SAID MINIFIED IMAGE IN A SECOND
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |