US5313239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter apparatus for stereoscopic cameras
Assignee: Fujinon Corp
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Filing: 1992-11-12
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Granted: 1994-05-17
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Expires: 2012-11-12
Abstract
Abstract A shutter apparatus for stereoscopic cameras for simultaneously taking a pair of stereoscopic photographs. A coupled shutter leaf is produced by integrally connecting two shutter leaves respectively disposed on two photographing lens portions provided with spots having different apertures. The coupled shutter leaf is rotatably supported by a connecting portion. The shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture has a smaller width, and a weight for compensating for the weight of the shutter leaf which is reduced as a result of reducing the width thereof is provided. The exposure time of the photographing portion provided with the stop having a smaller aperture is longer than that of the other photographing portion, so that the quantity of incident light at the two photographing portions is the same. It is also possible that the shutter leaves have the same width and the connecting portion for rotatably supporting the coupled shutter leaf is shifted from the center of the two stops closer to the stop having a large aperture.
Inventors
- 👤 Shigeo Mizukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:52
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08; G03B35/10; G03B9/00; G03B9/08; G03B9/10; H; H04; H04N; H04N13/00; H04N13/20; H04N13/204; H04N13/207; H04N13/211
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves, said shutter leaf of said coupled shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture has a smaller width than the other shutter leaf; and a connection portion for rotatably supporting said coupled shutter leaf; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
Claim 2
Dependent Claim
142 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves, said shutter leaf of said coupled shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture has a smaller width than the other shutter leaf; and a connection portion for rotatably supporting said coupled shutter leaf; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
Claim 3
Dependent Claim
52 words
A shutter apparatus for stereoscopic cameras according to claim 1, wherein said shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture is provided with a weight for compensating for the weight of said shutter leaf which is reduced as a result of reducing the width thereof.
Claim 4
Dependent Claim
51 words
A shutter apparatus for stereoscopic cameras according to claim 1, wherein said coupled shutter leaf is provided with an operation lever projecting from said connecting portion, so that said shutter releasing operations are executed by strongly pressing said operation lever by a shutter driving mechanism as if kicking said operation lever.
Claim 5
Dependent Claim
31 words
A shutter apparatus for stereoscopic cameras according to claim 1, wherein lenses provided on said two photographing portions have different focal lengths so as to take charge of different photographing ranges.
Claim 6
Dependent Claim
68 words
A shutter apparatus for stereoscopic cameras according to claim 1, wherein said shutter leaf of said coupled shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture has a smaller width than the other shutter leaf, and said connecting portion for rotatably supporting said coupled shutter leaf is shifted from the center of said stops closer to said stop having a large aperture.
Claim 7
Dependent Claim
18 words
A shutter apparatus for stereoscopic cameras according to claim 1, wherein said stereoscopic cameras are disposable simple cameras.
Claim 8
Dependent Claim
195 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves having an upper and lower portion and said shutter leaf of said coupled shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture has a smaller width than the other shutter leaf; a connecting portion for rotatably supporting said coupled shutter leaf; a weight which is formed of said coupled shutter leaf disposed at said portion having a smaller width; an operation lever for rotating said coupled shutter leaf disposed at said upper portion and projecting therefrom; and a driving lever located so as to operatively engage said operation lever; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
Claim 9
Dependent Claim
195 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves having an upper and lower portion and said shutter leaf of said coupled shutter leaf disposed at said photographing portion provided with said stop having a smaller aperture has a smaller width than the other shutter leaf; a connecting portion for rotatably supporting said coupled shutter leaf; a weight which is formed of said coupled shutter leaf disposed at said portion having a smaller width; an operation lever for rotating said coupled shutter leaf disposed at said upper portion and projecting therefrom; and a driving lever located so as to operatively engage said operation lever; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
Claim 10
Dependent Claim
141 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves having the same width and said connecting portion for rotatably supporting said coupled leaf is shifted from the center of said stops closer to said stop having a larger aperture; and a connecting portion for rotatably supporting said coupled shutter leaf; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
Claim 11
Dependent Claim
141 words
A shutter apparatus for stereoscopic cameras provided with stops having different apertures at two photographing portions so as to simultaneously take a pair of pictures, said shutter apparatus comprising: a coupled shutter leaf which is obtained by integrally connecting two shutter leaves having the same width and said connecting portion for rotatably supporting said coupled leaf is shifted from the center of said stops closer to said stop having a larger aperture; and a connecting portion for rotatably supporting said coupled shutter leaf; said coupled shutter leaf simultaneously executes shutter releasing operations at said two photographing portions so that operating time of the shutter leaf disposed at the photographing portion provided with the stop having a smaller aperture is shorter than the operating time of the shutter leaf disposed at the photographing portion provided with the stop having a larger aperture.
References Cited (Backward Citations)
US2361661A
Cited
US3446132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |