Patent US3825508A successfully refreshed from Google Patents.
Patent US3791733A successfully refreshed from Google Patents.
US3791733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic device for achieving a dominant color effect
Assignee: STUDIOUL CINEMATOGRAPHIC BUCUR
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Filing: 1972-01-17
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Granted: 1974-02-12
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Expires: 1992-01-17
Abstract
Abstract A device to be used in photography for achieving a dominant color effect. Thus the device can be attached to the objective of any camera. It has a tubular enclosure open at both ends and is carrying at one end a fastener for releasably fastening the enclosure to an objective. Adjacent its other end the enclosure has a means for supporting a special color filter. Between the color filter and the objective is an illuminating structure for illuminating the color filter so as to achieve the dominant color effect. Between the illuminating structure and the objective is a shielding structure to prevent the light from the light source from travelling back to the objective, so that in this way the light is primarily directed toward the filter.
Inventors
- 👤 S Horvath
- 👤 A Miheles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:14
CPC Classifications
G; G03; G03C; G03C7/00; G03B; G03B11/00; G03B17/00; G03B17/02; G03B17/12; G03B33/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
A photostatic device for achieving a dominant color effect, comprising an elongated tubular enclosure having a pair of opposed open ends, fixing means carried by said enclosure at one of said ends thereof for releasably fixing said enclosure to an objective of a camera so that light entering through the other end of said enclosure will reach the objective, said tubular enclosure having means for removably supporting a filter of a predetermined color in the path of light travelling through said enclosure to the objective at a distance from said objective which does not exceed ''''the zone of non-clarity'''' of said objective, said filter comprises net means of said predetermined color corresponding to said dominant color effect, illuminating means carried by said tubular enclosure between said objective and said filter, for illuminating said filter mounted in said supporting means, screening mounted on said tubular enclosure between said illuminating means and said objective for preventing light from said illuminating means from travelling back to the objective, so that the light will travel from the light sources primarily to the filter, said tubular enclosure flares outwardly from said fixing means thereby locating said screen means and light sources outwardly beyond a circle of the diameter and coaxial with the objective.
Claim 2
Dependent Claim
208 words
A photostatic device for achieving a dominant color effect, comprising an elongated tubular enclosure having a pair of opposed open ends, fixing means carried by said enclosure at one of said ends thereof for releasably fixing said enclosure to an objective of a camera so that light entering through the other end of said enclosure will reach the objective, said tubular enclosure having means for removably supporting a filter of a predetermined color in the path of light travelling through said enclosure to the objective at a distance from said objective which does not exceed ''''the zone of non-clarity'''' of said objective, said filter comprises net means of said predetermined color corresponding to said dominant color effect, illuminating means carried by said tubular enclosure between said objective and said filter, for illuminating said filter mounted in said supporting means, screening mounted on said tubular enclosure between said illuminating means and said objective for preventing light from said illuminating means from travelling back to the objective, so that the light will travel from the light sources primarily to the filter, said tubular enclosure flares outwardly from said fixing means thereby locating said screen means and light sources outwardly beyond a circle of the diameter and coaxial with the objective.
Claim 3
Dependent Claim
34 words
The photographic device as set forth in claim 1, wherein said illuminating means includes a pair of light sources respectively situated at equal distances from and at diametrically opposed sides of the optical axis.
Claim 4
Dependent Claim
22 words
The photographic device as set forth in claim 1, wherein the interior surface of said elongated tubular enclosure is painted dull black.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |