US4887108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera
Assignee: Minolta Co Ltd
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Filing: 1988-05-26
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Granted: 1989-12-12
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Expires: 2008-05-26
Abstract
Abstract A photographic camera having a real focal length photographing mode and two kinds of a first and a second pseudo focal length photographing modes. In the first pseudo focal length photographing mode, the photographic camera is capable of specifying a scope for printing narrower than the scope in the real focal length photographing mode. The photographic camera has a function for selecting either of the real focal length photographing mode and the first and second pseudo focal length photographing modes in order to output a mode signal in accordance with the selected mode, a function for measuring a brightness of an object to output a signal of the measured light in accordance with it, a function for outputting a signal in accordance with a film sensitivity and a function for calculating an exposure value in accordance with the signals of the mode, measured light and film sensitivity and also for rectifying the aperture to the open side in the second pseudo focal length photographing mode rather than in the first pseudo focal length photographing mode.
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
2026-11-01 14:18
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B13/00; G03B13/02; G03B19/00; G03B19/02; G03B19/04; G03B27/00; G03B27/32; G03B27/46; G03B27/462; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/246
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A photographic camera comprising: means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an exposure in accordance with the first and second signals, said controlling means including means, responsive to said selecting means, for shifting the exposure to an overexposure side in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode.
Claim 2
Dependent Claim
125 words
A photographic camera comprising: means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an exposure in accordance with the first and second signals, said controlling means including means, responsive to said selecting means, for shifting the exposure to an overexposure side in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode.
Claim 3
Dependent Claim
43 words
A photographic camera is claimed in claim 1, wherein said shifting means comprises means for shifting an aperture of said camera to an open side in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode.
Claim 4
Dependent Claim
125 words
A photographic camera comprising: means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an aperture in accordance with the first and second signals, said controlling means including means, responsive to said selecting means, for shifting the aperture to an open side in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode.
Claim 5
Dependent Claim
125 words
A photographic camera comprising: means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an aperture in accordance with the first and second signals, said controlling means including means, responsive to said selecting means, for shifting the aperture to an open side in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode.
Claim 6
Dependent Claim
162 words
A photographic camera comprising: first selecting means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; second selecting means for selecting between a first and second sub-modes in the pseudo focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an aperture in accordance with the first and second signals, said controlling means including means, responsive to said first and second selecting means, for causing the aperture to open more in the first sub-mode in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode or the second sub-mode in the pseudo focal length photographing mode.
Claim 7
Dependent Claim
162 words
A photographic camera comprising: first selecting means for selecting between a real focal length photographing mode and a pseudo focal length photographing mode, a field to be printed in the pseudo focal length photographing mode being narrower than that in the real focal length photographing mode; second selecting means for selecting between a first and second sub-modes in the pseudo focal length photographing mode; means for measuring a brightness of an object to produce a first signal in accordance with the measured brightness; means for outputting a second signal in accordance with a film speed; and means for controlling an aperture in accordance with the first and second signals, said controlling means including means, responsive to said first and second selecting means, for causing the aperture to open more in the first sub-mode in the pseudo focal length photographing mode relative to the case in the real focal length photographing mode or the second sub-mode in the pseudo focal length photographing mode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |