Patent US4769663A successfully refreshed from Google Patents.
US4769663A
Expired / Lapsed
US
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Camera with an automatic focus adjusting apparatus
Assignee: Minolta Co Ltd
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Filing: 1987-06-16
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Granted: 1988-09-06
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Expires: 2007-06-16
Abstract
Abstract This invention is directed to a camera provided with an automatic focus adjusting apparatus in which, in addition to the function of carrying out an AE lock based on an in-focus detection, an AE lock can be carried out either before or after an AF operation is completed or when an AF operation is impossible. In other words, irrespective of the condition of an automatic focus adjusting means, an AE lock can be accomplished at any desired moment. Therefore, the degree of freedom in a photography operation is expanded.
Inventors
- 👤 Toshio Yamaki
- 👤 Hiromu Mukai
- 👤 Akihiko Fujino
- 👤 Shuji Izumi
- 👤 Masaaki Nakai
- 👤 Nobuyuki Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:05
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/091; G02; G02B; G02B7/00; G02B7/28; G02B7/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A camera with an automatic focus adjusting apparatus comprising: focus adjusting means for automatically adjusting a focusing condition of an objective lens of the camera to produce an in-focus signal when the objective lens is adjusted to an in-focus condition; light metering means for metering brightness of an object and outputting a light metering signal in accordance with the metered result; means for outputting a lock signal in response to a manual operation at any desired time before an exposure operation of the camera is started; lock means for locking the light metering signal in response to either of the in-focus signal and the lock signal; means for prohibiting the lock means from locking the light metering signal in response to the in-focus signal when the lock means has already locked the light metering signal in response to the lock signal; and means for permitting the lock means to lock the light metering signal in response to the lock signal after the lock means has locked the light metering signal in response to the in-focus signal.
Claim 2
Dependent Claim
176 words
A camera with an automatic focus adjusting apparatus comprising: focus adjusting means for automatically adjusting a focusing condition of an objective lens of the camera to produce an in-focus signal when the objective lens is adjusted to an in-focus condition; light metering means for metering brightness of an object and outputting a light metering signal in accordance with the metered result; means for outputting a lock signal in response to a manual operation at any desired time before an exposure operation of the camera is started; lock means for locking the light metering signal in response to either of the in-focus signal and the lock signal; means for prohibiting the lock means from locking the light metering signal in response to the in-focus signal when the lock means has already locked the light metering signal in response to the lock signal; and means for permitting the lock means to lock the light metering signal in response to the lock signal after the lock means has locked the light metering signal in response to the in-focus signal.
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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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |