US5020369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image stabilizing optical device
Assignee: Canon Inc
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Filing: 1989-05-12
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Granted: 1991-06-04
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Expires: 2009-05-12
Abstract
Abstract An angular acceleration meter, for use in an image stabilizing optical device, is provided with a seesaw rotatably supported about an angular acceleration detecting axis and constitutes a detecting mass, in which the seesaw is shaped as an arc form with curved or polygonal surface symmetric with a respect to the detecting axis.
Inventors
- 👤 Koichi Washisu
- 👤 Ichiro Ohnuki
- 👤 Toru Nagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:59
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/0888
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
58 words
An angular acceleration meter for detecting angular acceleration of an object, comprising: (a) sensing mass formed into a shape corresponding to a shape of the object; (b) supporting means for movably supporting said sensing mass relative to the object; and (c) angular acceleration sensing means for measuring an angular acceleration of said sensing mass relative to the object.
Claim 2
Dependent Claim
58 words
An angular acceleration meter for detecting angular acceleration of an object, comprising: (a) sensing mass formed into a shape corresponding to a shape of the object; (b) supporting means for movably supporting said sensing mass relative to the object; and (c) angular acceleration sensing means for measuring an angular acceleration of said sensing mass relative to the object.
Claim 3
Dependent Claim
24 words
An angular acceleration meter according to claim 1, wherein said supporting means comprises means for rotatably supporting said sensing mass relative to the object.
Claim 4
Dependent Claim
24 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed as a curved surface following a configuration of the object.
Claim 5
Dependent Claim
23 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed as a polyhedron following a configuration of the object.
Claim 6
Dependent Claim
24 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed in a plate-like shape following a configuration of the object.
Claim 7
Dependent Claim
24 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed in a bar-like shape following a configuration of the object.
Claim 8
Dependent Claim
17 words
An angular acceleration meter according to claim 1, wherein said sensing mass comprises a balance adjusting means.
Claim 9
Dependent Claim
23 words
An acceleration meter according to claim 1, wherein said sensing mass is formed in a ring-like shape following a configuration of the object.
Claim 10
Dependent Claim
23 words
An acceleration meter according to claim 1, wherein said sensing mass is formed in a cylinder-like shape following a configuration of the object.
Claim 11
Dependent Claim
29 words
An acceleration meter according to claim 1, wherein said angular acceleration sensing means comprises optical means for detecting a deviation state of said sensing mass relative to the object.
Claim 12
Dependent Claim
30 words
An acceleration meter according to claim 10, wherein: said optical means comprises light projection means for projecting a signal light; and light receiving means for receiving the projected signal light.
Claim 13
Dependent Claim
25 words
An acceleration meter according to claim 11, wherein said light receiving means comprises means for detecting a light receiving position of the projected signal light.
Claim 14
Dependent Claim
58 words
An acceleration meter according to claim 12, wherein said angular acceleration sensing means comprises driving means for compensating a deviation of light receiving portion by shifting said sensing mass in accordance with the deviation state, said angular acceleration sensing means detecting the angular acceleration of the object on the basis of a driving state of said driving means.
Claim 15
Dependent Claim
16 words
An acceleration meter according to claim 13, wherein said driving means comprises an electro-magnetic driving means.
Claim 16
Dependent Claim
51 words
An acceleration meter according to claim 1, wherein said angular acceleration sensing means comprises driving means for compensating a relative movement of said sensing mass to the object, said angular acceleration sensing means detecting the angular acceleration of the object on the basis of a driving state of said driving means.
Claim 17
Dependent Claim
16 words
An acceleration meter according to claim 15, wherein said driving means comprises an electro-magnetic driving means.
Claim 18
Dependent Claim
14 words
An acceleration meter according to claim 15, wherein said driving means comprises elastic means.
Claim 19
Dependent Claim
29 words
An acceleration meter according to claim 1, wherein said angular acceleration sensing means comprises piezo-electric means for detecting a moving state of said sensing mass relative to the object.
Claim 20
Dependent Claim
30 words
An acceleration meter according to claim 1, wherein said angular acceleration sensing means comprises a strain gauge for detecting a moving state of said sensing mass relative to the object.
Claim 21
Dependent Claim
14 words
An acceleration meter according to claim 1, wherein the object is a lens barrel.
Claim 22
Dependent Claim
25 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed as a curved surface and the object is a lens barrel.
Claim 23
Dependent Claim
24 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed as a polyhedron and the object is a lens barrel.
Claim 24
Dependent Claim
25 words
An angular acceleration meter according to claim 1, wherein said sensing ass is formed in a plate-like shape and the object is a lens barrel.
Claim 25
Dependent Claim
25 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed in a bar-like shape and the object is a lens barrel.
Claim 26
Dependent Claim
25 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed in a ring-like shape and the object is a lens barrel.
Claim 27
Dependent Claim
25 words
An angular acceleration meter according to claim 1, wherein said sensing mass is formed in a cylinder-like shape and the object is a lens barrel.
References Cited (Backward Citations)
US2738968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |