US4185898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for projecting a film picture
Assignee: INFRA VISION AG ZUG
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Filing: 1977-10-31
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Granted: 1980-01-29
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Expires: 1997-10-31
Abstract
Abstract A projector for projecting images of an image bearing film which has marginal edges and a central image bearing portion, comprises a film guide which includes vertically spaced, substantially cylindrical guide members. The image bearing film is guided radially to the periphery of said guide and is passed around the peripheries of the guides with the marginal edges engaged thereon and the image bearing portion disposed between the guides. A light source is arranged centrally of the guides and its rays pass through the image bearing film to a cylindrical interceptor surface which is arranged radially outwardly of the guide. The light source is advantageously arranged in connection with a rotary slotted housing in which the slots are spaced circumferentially around its periphery and project the light rays periodically to the image to give moving image effect. In another arrangement, the light source is disposed to project first to a mirror arranged radially outwardly of the guides and then back through the image and through a lens system disposed centrally of the guides and arranged to project to an interceptor surface arranged exteriorly of the guides and to one side thereof.
Inventors
- 👤 Hermann H. Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:48
CPC Classifications
G; G03; G03B; G03B37/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
247 words
A device for projecting a film picture strip at an image angle including an angle of substantially 360°, comprising first and second spaced apart coaxial rings having cylindrical circumferential surfaces which have diameters equal to each other and serve as supports for the margins of the film picture strip, feed means including first means for guiding a film strip radially inwardly toward said rings with its margins guided over said circumferential surfaces and second means for guiding said strip radially outwardly from said rings, said first and second feed means being located closely adjacent each other so that the film is fed over substantially the whole of said circumferential surfaces, a point source of light disposed on the axis of said rings and spaced downwardly of said rings, a cylindrical mirror for reflecting the rays of said source of light coaxial with and disposed radially outwardly of said rings having at least a portion above said source of light to reflect the rays from the source of light upwardly and radially inwardly through the film strip guided over said circumferential surfaces, a cylindrical intercepting surface coaxial with said rings and disposed above said rings for receiving the rays reflected through the film strip, and a rotatable lens disposed along the axis of said rings in a position above said source of light and below said intercepting surface to receive the rays projected from said mirror through the film strip and to focus them on said intercepting surface.
Claim 2
Independent Claim
247 words
A device for projecting a film picture strip at an image angle including an angle of substantially 360°, comprising first and second spaced apart coaxial rings having cylindrical circumferential surfaces which have diameters equal to each other and serve as supports for the margins of the film picture strip, feed means including first means for guiding a film strip radially inwardly toward said rings with its margins guided over said circumferential surfaces and second means for guiding said strip radially outwardly from said rings, said first and second feed means being located closely adjacent each other so that the film is fed over substantially the whole of said circumferential surfaces, a point source of light disposed on the axis of said rings and spaced downwardly of said rings, a cylindrical mirror for reflecting the rays of said source of light coaxial with and disposed radially outwardly of said rings having at least a portion above said source of light to reflect the rays from the source of light upwardly and radially inwardly through the film strip guided over said circumferential surfaces, a cylindrical intercepting surface coaxial with said rings and disposed above said rings for receiving the rays reflected through the film strip, and a rotatable lens disposed along the axis of said rings in a position above said source of light and below said intercepting surface to receive the rays projected from said mirror through the film strip and to focus them on said intercepting surface.
Claim 3
Dependent Claim
25 words
A device according to claim 1, wherein said source of light includes a rotary light slot having an axis on the axis of said rings.
Claim 4
Dependent Claim
21 words
A device according to claim 1, wherein said intercepting surface comprises a polygonal surface coaxial with the axis of said rings.
Claim 5
Dependent Claim
20 words
A device according to claim 1, including means for feeding the picture strip in a stepwise manner to said rings.
Claim 6
Dependent Claim
24 words
A device according to claim 1, wherein said intercepting surface has means for exchangeably receiving photosensitive paper for producing copies of a magnified image.
Claim 7
Dependent Claim
191 words
A projector for projecting images of an image bearing film having marginal edges in a central image bearing portion, comprising first and second spaced apart annular film guides each having circular cylindrical peripheries, feed means for feeding an image bearing film over substantially the whole periphery of said guides with the edges of the film engaged on respective guides and the image bearing portion exposed between said guides, an annular intercepting surface spaced radially outwardly from said guides, a point source of light located on the axis of said annular film guides, said point source of light located outside of the axial interspace between said first and second spaced apart annular film guides, a cylindrical mirror located radially outside said first and second film guides and arranged so as to reflect the light rays from said source of light and inwardly through the central image bearing portion of the film, and a rotatable lens located along the axis of said first and second film guides and spaced from said source of light to receive the rays from the image bearing portion of the film and project them onto said intercepting surface.
Claim 8
Dependent Claim
191 words
A projector for projecting images of an image bearing film having marginal edges in a central image bearing portion, comprising first and second spaced apart annular film guides each having circular cylindrical peripheries, feed means for feeding an image bearing film over substantially the whole periphery of said guides with the edges of the film engaged on respective guides and the image bearing portion exposed between said guides, an annular intercepting surface spaced radially outwardly from said guides, a point source of light located on the axis of said annular film guides, said point source of light located outside of the axial interspace between said first and second spaced apart annular film guides, a cylindrical mirror located radially outside said first and second film guides and arranged so as to reflect the light rays from said source of light and inwardly through the central image bearing portion of the film, and a rotatable lens located along the axis of said first and second film guides and spaced from said source of light to receive the rays from the image bearing portion of the film and project them onto said intercepting surface.
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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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |