US5331366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
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Filing: 1992-04-30
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Granted: 1994-07-19
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Expires: 2012-04-30
Abstract
Abstract A camera has a first photographing mode for also performing a second photographing operation at a focusing-lens position of a first photographing operation, a second photographing mode for performing autofocusing for every photographing operation, and diaphragm controller for controlling the amount of an aperture of a diaphragm. The diaphragm controller maintains the diaphragm in a state at the first photographing operation when the first photographing mode is selected, and returns the diaphragm to a predetermined position for every photographing operation when the second photographing mode is selected.
Inventors
- 👤 Tatsuyuki Tokunaga
- 👤 Masayuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:17
CPC Classifications
G; G03; G03B; G03B17/00; G02; G02B; G02B7/00; G02B7/28; G03B7/00; G03B7/08; G03B7/091; G03B7/095
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
A camera comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, without driving the diaphragm to a full open position between successive photographing operations, by an amount of a shift of the stop value of the diaphragm from the stop value at the preceding photographing operation, in a condition that the specific photographing mode has been selected.
Claim 2
Dependent Claim
80 words
A camera comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, without driving the diaphragm to a full open position between successive photographing operations, by an amount of a shift of the stop value of the diaphragm from the stop value at the preceding photographing operation, in a condition that the specific photographing mode has been selected.
Claim 3
Dependent Claim
30 words
A camera according to claim 1, wherein said specific photographing mode shifts said stop value both in a direction of being stopped down and in a direction of being opened.
Claim 4
Dependent Claim
46 words
A camera according to claim 1, further comprising a semitransparent mirror, a photographing lens, and a finder optical system, said semitransparent mirror dividing light passing through said photographing lens to said finder optical system and a photographing system in a predetermined ratio, said mirror being fixed.
Claim 5
Dependent Claim
17 words
A camera according to claim 1, wherein said specific photographing mode is performed at successive photographing operations.
Claim 6
Dependent Claim
22 words
A camera according to claim 1, further comprising a motor as a driving source for the opening or closing of said diaphragm.
Claim 7
Dependent Claim
96 words
A camera body to which an interchangeable lens incorporating a diaphragm can be detachably mounted, said camera body comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, without driving the diaphragm to a full open position between successive photographing operations, by an amount of a shift of the stop value of the diaphragm from the stop value at the preceding photographing operation, in a condition that the specific photographing mode has been selected.
Claim 8
Dependent Claim
96 words
A camera body to which an interchangeable lens incorporating a diaphragm can be detachably mounted, said camera body comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, without driving the diaphragm to a full open position between successive photographing operations, by an amount of a shift of the stop value of the diaphragm from the stop value at the preceding photographing operation, in a condition that the specific photographing mode has been selected.
Claim 9
Dependent Claim
31 words
A camera body according to claim 6, wherein said specific photographing mode shifts said stop value both in a direction of being stopped down and in a direction of being opened.
Claim 10
Dependent Claim
48 words
A camera body according to claim 6, further comprising a semitransparent mirror, a photographing lens, and a finder optical system, said semitransparent mirror for dividing light passing through a photographing lens to said finder optical system and a photographing system in a predetermined ratio, said mirror being fixed.
Claim 11
Dependent Claim
18 words
A camera body according to claim 6, wherein said specific photographing mode is performed at successive photographing operations.
Claim 12
Dependent Claim
75 words
A camera comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, in a condition that said specific photographing mode has been selected, from a first position directly to a second position, the first position differing from the second position by an amount of a shift in stop values between successive photographing operations.
Claim 13
Dependent Claim
75 words
A camera comprising: (a) a specific photographing mode for performing plural photographic operations by shifting a stop value of a diaphragm by a predetermined amount; and (b) diaphragm control means for driving the diaphragm, in a condition that said specific photographing mode has been selected, from a first position directly to a second position, the first position differing from the second position by an amount of a shift in stop values between successive photographing operations.
References Cited (Backward Citations)
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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) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |