Patent US4924248A successfully refreshed from Google Patents.
US4924248A
Expired / Lapsed
US
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Photographic camera
Assignee: Minolta Co Ltd
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Filing: 1989-05-05
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Granted: 1990-05-08
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Expires: 2009-05-05
Abstract
Abstract A changeable focal length photographic camera which may operate in either a real focal length photographing mode or a pseudo focal length photographing mode. Either a normal focal length photographing mode or a close-up photographing mode may be selected. A setting device sets the camera optical system to a longer side in focal length and also sets the object distance to its shortest distance, in the case where the close-up mode is selected. A recording device may be provided to provide an indication on the photographic film when the pseudo focal length photographing mode is selected.
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
2026-11-09 14:14
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B1/00; G03B1/42; G03B17/24; G03B19/00; G03B19/02; G03B19/04; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/248
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
241 words
A photographic camera comprising: first means for selecting either of a normal photographing mode in which an object located within a normal distance range is photographed and a close-up photographing mode in which an object closer than the closest point of the normal distance range is photographed; means for varying in response to a manual operation a focal length of a photographing lens between a minimum focal length and a maximum focal length when the normal photographing mode is selected; first means for fixing the focal length of the photographing lens in the maximum focal length when the close-up mode is selected; means for automatically adjusting, when the normal photographing mode is selected, a position of the photographing lens between a first position and a second position so as to focus the photographing lens on an object within the normal distance range, wherein the photographing lens is focused on an object at the closest point of the normal distance range when the photographing lens is at the first position and the photographing lens is focused on an object at the infinity point when the photographing lens is at the second position; and second means for fixing the photographing lens in a predetermined position when the close-up mode is selected, wherein the photographing lens is focused on an object located at a point closer than the closest point of the normal distance range when the photographing lens is at the predetermined position.
Claim 2
Dependent Claim
241 words
A photographic camera comprising: first means for selecting either of a normal photographing mode in which an object located within a normal distance range is photographed and a close-up photographing mode in which an object closer than the closest point of the normal distance range is photographed; means for varying in response to a manual operation a focal length of a photographing lens between a minimum focal length and a maximum focal length when the normal photographing mode is selected; first means for fixing the focal length of the photographing lens in the maximum focal length when the close-up mode is selected; means for automatically adjusting, when the normal photographing mode is selected, a position of the photographing lens between a first position and a second position so as to focus the photographing lens on an object within the normal distance range, wherein the photographing lens is focused on an object at the closest point of the normal distance range when the photographing lens is at the first position and the photographing lens is focused on an object at the infinity point when the photographing lens is at the second position; and second means for fixing the photographing lens in a predetermined position when the close-up mode is selected, wherein the photographing lens is focused on an object located at a point closer than the closest point of the normal distance range when the photographing lens is at the predetermined position.
Claim 3
Dependent Claim
27 words
A photographic camera as claimed in claim 1, further comprising means for setting an aperture of a diaphragm to be smaller when the close-up mode is selected.
Claim 4
Dependent Claim
69 words
A photographic camera as claimed in claim 1, further comprising a second means for selecting either of a real focal length photographing mode and a pseudo focal length photographing mode to thereby specify a scope for printing narrower than the scope in the real focal length photographing mode, and means for making said second selecting means select the pseudo focal length photographing mode when the close-up mode is selected.
Claim 5
Dependent Claim
241 words
A photographic camera comprising: first means for selecting either of a normal photographing mode in which an object located in a normal distance range is photographed and a close-up photographing mode in which an object closer than the closest point of the normal distance range is photographed; second means for selecting either of a real focal length photographing mode and a pseudo focal length photographing mode to thereby specify a scope for printing narrower than the scope in the real focal length photographing mode; means for making said second selecting means select the pseudo focal length photographing mode when the close-up mode is selected; means for automatically adjusting, when the normal mode is selected, a position of the photographing lens between a first position and a second position so as to focus the photographing lens on an object within the normal distance range, wherein the photographing lens is focused on an object at the closest point of the normal distance range when the photographing lens is at the first position and the photographing lens is focused on an object at the infinity point when the photographing lens is at the second position; and means for fixing the photographing lens in a predetermined position when the close-up mode is selected, wherein the photographing lens is focused on an object located at a point closer than the closest point of the normal distance range when the photographing lens is at the predetermined position.
Claim 6
Dependent Claim
241 words
A photographic camera comprising: first means for selecting either of a normal photographing mode in which an object located in a normal distance range is photographed and a close-up photographing mode in which an object closer than the closest point of the normal distance range is photographed; second means for selecting either of a real focal length photographing mode and a pseudo focal length photographing mode to thereby specify a scope for printing narrower than the scope in the real focal length photographing mode; means for making said second selecting means select the pseudo focal length photographing mode when the close-up mode is selected; means for automatically adjusting, when the normal mode is selected, a position of the photographing lens between a first position and a second position so as to focus the photographing lens on an object within the normal distance range, wherein the photographing lens is focused on an object at the closest point of the normal distance range when the photographing lens is at the first position and the photographing lens is focused on an object at the infinity point when the photographing lens is at the second position; and means for fixing the photographing lens in a predetermined position when the close-up mode is selected, wherein the photographing lens is focused on an object located at a point closer than the closest point of the normal distance range when the photographing lens is at the predetermined position.
Claim 7
Dependent Claim
27 words
A photographic camera as claimed in claim 4, further comprising means for setting an aperture of a diaphragm to be smaller when the close-up mode is selected.
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |