Patent US3586428A successfully refreshed from Google Patents.
US3586428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filming systems for motion pictures and television
Assignee: Individual
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Filing: 1969-02-12
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Granted: 1971-06-22
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Expires: 1989-02-12
Abstract
Abstract Method of and apparatus for making motion-picture and television films with simultaneous projection of a background on a screen, by using an intermediate reflection on a semisilvered mirror, which consists in providing means for producing a rectilinear or circular lateral movement of the camera in combination with the pivotal movement of the camera in a horizontal plane in order to preserve the coincidence of the projections of said camera and of the projector on said semisilvered mirror.
Inventors
- 👤 Claude A Matalou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:57
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/06; G03B15/08; G03B15/12; H; H04; H04N; H04N23/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
An apparatus for making motion-picture and television film comprising a camera, a projector, a semireflective mirror, a screen on which said projector projects a background image, said camera and said projector being disposed on the same side of the screen and symmetrically on each side of said semireflective mirror in such a manner that light rays issuing from the projector are reflected at an angle of 90* onto said screen, means stationarily mounting said projector, means supporting said camera to be movable at least in a horizontal plane and comprising first means allowing a pivotal movement of said camera around a vertical axis, and second means allowing a lateral movement of said camera, means connecting said first and second means so that a pivotal movement of said camera causes a determined lateral movement whereby the camera axis and projector axis constantly intersect on the same point of the mirror.
Claim 2
Independent Claim
149 words
An apparatus for making motion-picture and television film comprising a camera, a projector, a semireflective mirror, a screen on which said projector projects a background image, said camera and said projector being disposed on the same side of the screen and symmetrically on each side of said semireflective mirror in such a manner that light rays issuing from the projector are reflected at an angle of 90* onto said screen, means stationarily mounting said projector, means supporting said camera to be movable at least in a horizontal plane and comprising first means allowing a pivotal movement of said camera around a vertical axis, and second means allowing a lateral movement of said camera, means connecting said first and second means so that a pivotal movement of said camera causes a determined lateral movement whereby the camera axis and projector axis constantly intersect on the same point of the mirror.
Claim 3
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said lateral movement is rectilinear.
Claim 4
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said lateral movement is circular.
Claim 5
Dependent Claim
61 words
An apparatus as claimed in claim 1, wherein said camera support means comprises a first platform, a pinion having a vertical axis and passing through said first platform with said camera mounted thereon, a second platform, a rack carried by said second platform and meshing with said pinion, and slide members having guide means mounted between said platforms allowing movement therebetween.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |