US4733263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera
Assignee: Minolta Co Ltd
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Filing: 1986-11-18
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Granted: 1988-03-22
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Expires: 2006-11-18
Abstract
Abstract A camera having, in addition to a real focal length photographing mode, a pseudo focal length photographing mode, namely, a photographing mode in which a part of a photographed image frame of a film is printed at an enlarging ratio different from an ordinary enlarging ratio to obtain a print as if it had been photographed using a telephoto lens. It is provided with means for recording photographing mode information on a frame of a film when the pseudo focal length photographing mode is selected, and a control means which brings a flash light emitting device into an operable condition in response to the selection of the pseudo focal length photographing mode and which actuates the flash light emitting device in synchronism with release of the shutter. An optical axis of a photographing lens and a flash emission tube are spaced from each other, and the pseudo focal length photographing mode can be selected only when a negative film is loaded in the camera.
Inventors
- 👤 Nobuyuki Taniguchi
- 👤 Takeo Hoda
- 👤 Yoshiaki Hata
- 👤 Manabu Inoue
- 👤 Yoshinobu Kudo
- 👤 Hiroshi Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:32
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B19/00; G03B19/02; G03B19/04; G03B27/00; G03B27/32; G03B27/46; G03B27/462
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
201 words
A photographic camera comprising: means for selecting a real focal length photographing mode in which a normal range in a frame of a film will be printed on a photographic paper and a pseudo focal length photographing mode in which a range narrower than the normal range in a frame of the film will be printed on a photographic paper; means for measuring an amount of light coming from an object to be photographed to produce a light measuring signal indicative of the measured amount of light; means responsive to said light measuring signal for discriminating whether the measured amount of light is under a predetermined amount to produce a discriminating signal indicative of the discriminated result; means responsive to said discriminating signal for producing a flash emission signal during an exposure control operation, only when the measured amount is discriminated to be under the predetermined amount, in the condition the real focal length photographing mode is selected, and for producing a flash emission signal during an exposure control operation independently of the discriminating signal, in the condition the pseudo focal length photographing mode is selected; and means for emitting a flash of light in response to the flash emission signal.
Claim 2
Dependent Claim
201 words
A photographic camera comprising: means for selecting a real focal length photographing mode in which a normal range in a frame of a film will be printed on a photographic paper and a pseudo focal length photographing mode in which a range narrower than the normal range in a frame of the film will be printed on a photographic paper; means for measuring an amount of light coming from an object to be photographed to produce a light measuring signal indicative of the measured amount of light; means responsive to said light measuring signal for discriminating whether the measured amount of light is under a predetermined amount to produce a discriminating signal indicative of the discriminated result; means responsive to said discriminating signal for producing a flash emission signal during an exposure control operation, only when the measured amount is discriminated to be under the predetermined amount, in the condition the real focal length photographing mode is selected, and for producing a flash emission signal during an exposure control operation independently of the discriminating signal, in the condition the pseudo focal length photographing mode is selected; and means for emitting a flash of light in response to the flash emission signal.
Claim 3
Dependent Claim
45 words
A photographic camera as claimed in claim 1, further comprising means for recording on said photographic film an information signal which indicates that the pseudo focal length photographing mode is selected when the pseudo focal length photographing mode is selected by said mode selecting means.
Claim 4
Dependent Claim
95 words
A photographic camera as claimed in claim 2, wherein the mode selecting means further includes means for selecting a flash emitting mode in which the flash emitting means forcibly emits the flash of light independently of the discriminating signal, and wherein the flash emission signal producing means produces the flash emission signal during an exposure control operation independently of the discriminating signal in the condition the flash emitting mode is selected, and wherein the photographic camera further comprises means for stopping the operation of the information recording means when the flash emitting mode is selected.
Claim 5
Dependent Claim
62 words
A photographic camera as claimed in claim 1, further comprising means for controlling a distance from an optical axis of an objective lens to a light emitting portion of the flash emitting means so that the distance when the pseudo focal length photographing mode is selected, is extended in comparison with the distance when the real focal length photographing mode is selected.
References Cited (Backward Citations)
US3490844A
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JPS5426721A
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JPS55129321A
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JPS5820021A
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JPS60145428A
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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) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |