US3715152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-pass reimaging optical system
Assignee: Individual
•
Filing: 1971-01-19
•
Granted: 1973-02-06
•
Expires: 1991-01-19
Abstract
Abstract AN OPTICAL IMAGING SYSTEM FOR ENABLING NONABSORBED LIGHT IMAGED ONTO A PHOTODETECTIVE SURFACE TO BE COLLECTED AND REIMAGED ONE OR MORE TIMES ONTO THAT SURFACE IN REGISTER WITH THE ORIGINAL IMAGE. THE SYSTEM INCLUDES AN OBJECTIVE LENS, ONE OR MORE IMAGING LENSES, ONE OR MORE RETROREFLECTORS AND PERHAPS A PRISM FOR PROVIDING OPTICAL MATCHING OF THE IMAGING LENS FOCAL PLANES TO THE PHOTODETECTIVE SURFACE.
Inventors
- 👤 R Brown
- 👤 W Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0407; G01J1/0414; G03; G03B; G03B35/00; H01J2229/00; H01J2229/89; H01J2229/893
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |