Patent US3332330A successfully refreshed from Google Patents.
US3332330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell arrangement in camera
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1965-08-09
•
Granted: 1967-07-25
•
Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Broschke Heinrich
- 👤 Holle Werner
- 👤 Meinecke Gunther
- 👤 Mandler Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:52
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09971; G03B7/09972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A LIGHT METER ARRANGEMENT FOR A REFLEX CAMERA HAVING OBJECTIVE LENS MEANS AND FINDER MEANS, SAID LIGHT METER ARRANGEMENT COMPRISING IN COMBINATION: (A) A LIGHT-SENSITIVE ELEMENT; AND (B) MEANS FORMING A PARTLY REFLECTIVE LIGHT BEAM DIVIDER COMPONENT ARRANGED IN THE PATH OF THE LIGHT RAYS COMING THROUGH THE OBJECTIVE LENS MEANS AND GOING TO THE FINDER MEANS AND A CONCAVE MIRROR COMPONENT FOR REFLECTING ONTO SAID LIGHT-SENSITIVE ELEMENT LIGHT WHICH, AS THE RESULT OF THE BEAM DIVISION EFFECT, IS TAKEN OUT OF THE PATH OF THE LIGHT RAYS GOING TO THE FINDER MEANS, THE RADIUS OF CURVATURE OF SAID CONCAVE MIRROR COMPONENT AND THE DISTANCE BETWEEN SAID CONCAVE MIRROR CONPONENT AND SAID LIGHT-SENSITIVE ELEMENT BEING SUCH THAT ANY LIGHT BEAM THAT TRANSMITS THE IMAGE OF SAID LIGH-SENSITIVE ELEMENT INTO THE SPACE OCCUPIED BY THE OBJECTIVE LENS MEANS DOES NOT INTERSECT THE EXIT PUPIL OF THE OBJECTIVE LENS MEANS.
Claim 2
Dependent Claim
148 words
A LIGHT METER ARRANGEMENT FOR A REFLEX CAMERA HAVING OBJECTIVE LENS MEANS AND FINDER MEANS, SAID LIGHT METER ARRANGEMENT COMPRISING IN COMBINATION: (A) A LIGHT-SENSITIVE ELEMENT; AND (B) MEANS FORMING A PARTLY REFLECTIVE LIGHT BEAM DIVIDER COMPONENT ARRANGED IN THE PATH OF THE LIGHT RAYS COMING THROUGH THE OBJECTIVE LENS MEANS AND GOING TO THE FINDER MEANS AND A CONCAVE MIRROR COMPONENT FOR REFLECTING ONTO SAID LIGHT-SENSITIVE ELEMENT LIGHT WHICH, AS THE RESULT OF THE BEAM DIVISION EFFECT, IS TAKEN OUT OF THE PATH OF THE LIGHT RAYS GOING TO THE FINDER MEANS, THE RADIUS OF CURVATURE OF SAID CONCAVE MIRROR COMPONENT AND THE DISTANCE BETWEEN SAID CONCAVE MIRROR CONPONENT AND SAID LIGHT-SENSITIVE ELEMENT BEING SUCH THAT ANY LIGHT BEAM THAT TRANSMITS THE IMAGE OF SAID LIGH-SENSITIVE ELEMENT INTO THE SPACE OCCUPIED BY THE OBJECTIVE LENS MEANS DOES NOT INTERSECT THE EXIT PUPIL OF THE OBJECTIVE LENS MEANS.
References Cited (Backward Citations)
US3127809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |