US3728948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image motion compensation mechanism
Assignee: Dynasciences Corp
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Filing: 1970-12-28
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Granted: 1973-04-24
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Expires: 1990-12-28
Abstract
Abstract An image motion compensation mechanism for an optical system in which random angular motion of the viewing device is compensated by a pivotal system in which the objective lens is mounted on an inertial balance member so as to pivot relative to a predetermined plane in the optical path in order to maintain the optical axis of the objective parallel to the desired line of sight. If the system is a telescope or other such viewing device, the pivot plane is defined at a distance from the objective related to the magnification of the system. If the system is a camera, the plane is coincident with the film plane.
Inventors
- 👤 D Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/646; G03; G03B; G03B31/00; G03B31/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
In an optical system including an objective at one end defining a continuous optical light image path to an image receiving member at the opposite end, a mechanism for compensating for random angular motion of said image receiving member, comprising: a housing containing said objective; means for angularly decoupling said random angular motion from said objective, said decoupling means including means defining a pivot in said continuous optical light image path about which said housing is pivotally mounted, said pivot being located at a point in said optical path so that the final image formed by said optical system is stabilized, said receiving member being mounted with respect to said housing so as to be subject to said random angular motion; and means inertially counterbalancing said objective lens about said pivot to compensate for the random angular motion of said image receiving member relative to the initial line-of-sight by tending to maintain the axis of said objective parallel to said initial line-of-sight.
Claim 2
Dependent Claim
162 words
In an optical system including an objective at one end defining a continuous optical light image path to an image receiving member at the opposite end, a mechanism for compensating for random angular motion of said image receiving member, comprising: a housing containing said objective; means for angularly decoupling said random angular motion from said objective, said decoupling means including means defining a pivot in said continuous optical light image path about which said housing is pivotally mounted, said pivot being located at a point in said optical path so that the final image formed by said optical system is stabilized, said receiving member being mounted with respect to said housing so as to be subject to said random angular motion; and means inertially counterbalancing said objective lens about said pivot to compensate for the random angular motion of said image receiving member relative to the initial line-of-sight by tending to maintain the axis of said objective parallel to said initial line-of-sight.
Claim 3
Dependent Claim
23 words
The mechanism according to claim 1 wherein said housing is decoupled to define said pivot between said objective and said image receiving member.
Claim 4
Dependent Claim
21 words
The mechanism according to claim 1 wherein said housing is decoupled to define said pivot coincident with said image receiving member.
Claim 5
Dependent Claim
34 words
The mechanism according to claim 1 wherein said decoupling means comprises means for gimbaling said housing to said image receiving member thereby to provide said image receiving member with two degrees of angular freedom.
Claim 6
Dependent Claim
14 words
The mechanism according to claim 1 wherein said image receiving member is an ocular.
Claim 7
Dependent Claim
85 words
The mechanism according to claim 1 further comprising an ocular, wherein said objective forms an inverted image in said optical path, and wherein said image receiving member is an erecting section in said system which presents an upright image to said ocular, said housing being decoupled to define said pivot between said objective and said erecting section, said pivot being spaced ahead of said inverted image by an amount equal to the focal length of said ocular divided by the magnification of said erecting section.
Claim 8
Dependent Claim
34 words
The mechanism according to claim 5 wherein said ocular presents an inverted image for viewing, and said housing is decoupled to define said pivot substantially coincident with the forwardmost principal surface of said ocular.
Claim 9
Dependent Claim
33 words
The mechanism according to claim 1 wherein said image receiving member is the film in a camera and said housing is decoupled to define said pivot coincident with the plane of said film.
Claim 10
Dependent Claim
19 words
The mechanism according to claim 1 further comprising means for snubbing said decoupling means whereby to prevent said decoupling.
Claim 11
Dependent Claim
60 words
The mechanism according to claim 9 including a superstructure supporting said image receiving member, said housing being decoupled with respect to said superstructure, and caging members carried internally and externally by said superstructure and housing respectively for snubbing said housing when engaged, and means for moving said superstructure caging member into and out of engagement with said housing caging member.
Claim 12
Dependent Claim
40 words
The mechanism according to claim 1 further comprising restoring means for applying a force to said housing tending gradually to align the axis of the image formed by said objective with the optical axis of the instantaneous image receiving member.
References Cited (Backward Citations)
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |