US3115537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for optical projectors
Assignee: Bausch and Lomb Inc
•
Filing: 1961-09-19
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Granted: 1963-12-24
•
Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:34
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/008; G02B17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A CATADIOPTRIC OPTICAL SYSTEM FOR USE IN A COMPARISON PROJECTOR OR THE LIKE WHICH FORMS AN IMAGE OF AN OBJECT, SAID SYSTEM BEING AFOCAL AND TELECENTRIC AND COMPRISING A POSITIVE LENS AND A CONCAVE SPHERICAL MIRROR WHICH IS OPTICALLY ALIGNED IN CONFRONTING RELATION THEREWITH AND IS AXIALLY SPACED THEREFROM SUBSTANTIALLY AT THE INFINITY FOCUS OF SAID LENS, SAID SYSTEM BEING SO CONSTRUCTED AND ARRANGED AS TO ALIGN SAID OBJECT ON ONE SIDE OF THE LENS AXIS WITHIN ITS DEPTH OF FOCUS, SAID SYSTEM FURTHER FORMING A CONJUGATE IMAGE OF SAID OBJECT ON THE SAME SIDE OF THE LENS AS THE OBJECT AND ON THE OPPOSITE SIDE OF SAID AXIS THEREFROM, SAID LENS INCLUDING A NEGATIVE AND A POSITIVE ELEMENT DESIGNATED L1 AND L2 RESPECTIVELY, THE OPTICAL DATA RELATED TO SAID SYSTEM BEING GIVEN IN THE MATHEMATICAL STATEMENTS HEREBELOW,
Claim 2
Dependent Claim
138 words
A CATADIOPTRIC OPTICAL SYSTEM FOR USE IN A COMPARISON PROJECTOR OR THE LIKE WHICH FORMS AN IMAGE OF AN OBJECT, SAID SYSTEM BEING AFOCAL AND TELECENTRIC AND COMPRISING A POSITIVE LENS AND A CONCAVE SPHERICAL MIRROR WHICH IS OPTICALLY ALIGNED IN CONFRONTING RELATION THEREWITH AND IS AXIALLY SPACED THEREFROM SUBSTANTIALLY AT THE INFINITY FOCUS OF SAID LENS, SAID SYSTEM BEING SO CONSTRUCTED AND ARRANGED AS TO ALIGN SAID OBJECT ON ONE SIDE OF THE LENS AXIS WITHIN ITS DEPTH OF FOCUS, SAID SYSTEM FURTHER FORMING A CONJUGATE IMAGE OF SAID OBJECT ON THE SAME SIDE OF THE LENS AS THE OBJECT AND ON THE OPPOSITE SIDE OF SAID AXIS THEREFROM, SAID LENS INCLUDING A NEGATIVE AND A POSITIVE ELEMENT DESIGNATED L1 AND L2 RESPECTIVELY, THE OPTICAL DATA RELATED TO SAID SYSTEM BEING GIVEN IN THE MATHEMATICAL STATEMENTS HEREBELOW,
References Cited (Backward Citations)
US274817A
Cited
US1783998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |