Patent US3114283A successfully refreshed from Google Patents.
US3114283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensing method and apparatus therefor
Assignee: Bausch and Lomb Inc
•
Filing: 1960-10-31
•
Granted: 1963-12-17
•
Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Heinz E R Gruner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4219; G01J1/02; G01J1/04; G01J1/0407; G01J1/0425; G03; G03B; G03B21/00; G03B21/14; G03B21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A PHOTOGRAPHIC PROJECTOR OF THE TYPE HAVING A LIGHT SOURCE FOR ILLUMINATING A PRIMARY FIELD AND A PROJECTION LENS FOR IMAGING THE PRIMARY FIELD UPON A SELECTED SURFACE, THE IMPROVEMENT COMPRISING A PLURALITY OF ELONGATED LIGHT TRANSMITTING MEMBERS INCLUDING ENTRANT FACES PERIPHERALLY DISPOSED AROUND THE BACK SURFACE OF THE PROJECTION LENS AND ADAPTED TO RECEIVE THE LIGHT PASSING THROUGH THE FIELD AND REFLECTED FROM THE BACK SURFACE OF THE LENS, SAID ELONGATED OPTICAL LIGHT TRANSMITTING MEMBERS SO CONSTRUCTED AND ARRANGED TO CONDUCT THE LIGHT TO A COMMON POINT TO THEREBY PROVIDE AN AVERAGING EFFECT, DETECTING MEANS DISPOSED AT SAID COMMON POINT FOR PRODUCING A SIGNAL IN RESPONSE TO THE IMAGING LIGHT REFLECTED FROM THE SURFACE OF THE PROJECTION LENS AND MEANS GENERATING A SIGNAL ADAPTED FOR CONTROLLING THE ILLUMINATION.
Claim 2
Dependent Claim
130 words
IN A PHOTOGRAPHIC PROJECTOR OF THE TYPE HAVING A LIGHT SOURCE FOR ILLUMINATING A PRIMARY FIELD AND A PROJECTION LENS FOR IMAGING THE PRIMARY FIELD UPON A SELECTED SURFACE, THE IMPROVEMENT COMPRISING A PLURALITY OF ELONGATED LIGHT TRANSMITTING MEMBERS INCLUDING ENTRANT FACES PERIPHERALLY DISPOSED AROUND THE BACK SURFACE OF THE PROJECTION LENS AND ADAPTED TO RECEIVE THE LIGHT PASSING THROUGH THE FIELD AND REFLECTED FROM THE BACK SURFACE OF THE LENS, SAID ELONGATED OPTICAL LIGHT TRANSMITTING MEMBERS SO CONSTRUCTED AND ARRANGED TO CONDUCT THE LIGHT TO A COMMON POINT TO THEREBY PROVIDE AN AVERAGING EFFECT, DETECTING MEANS DISPOSED AT SAID COMMON POINT FOR PRODUCING A SIGNAL IN RESPONSE TO THE IMAGING LIGHT REFLECTED FROM THE SURFACE OF THE PROJECTION LENS AND MEANS GENERATING A SIGNAL ADAPTED FOR CONTROLLING THE ILLUMINATION.
References Cited (Backward Citations)
US2122750A
Cited
US2616331A
Cited
US2759602A
Cited
US2804550A
Cited
US2726173A
Cited
US2843002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |